From dabc765db6a98fa70d2b70cdb6b9af90d1de954c Mon Sep 17 00:00:00 2001
From: bluejazzCHN <songjiangzhang@hotmail.com>
Date: Thu, 7 Jan 2021 22:19:46 +0800
Subject: [PATCH 01/43] update

---
 adafruit_max7219/max7219.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 530ddd1..9f22c6b 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -149,3 +149,11 @@ def write_cmd(self, cmd, data):
         self._chip_select.value = False
         with self._spi_device as my_spi_device:
             my_spi_device.write(bytearray([cmd, data]))
+
+    def rotation(self, direction):
+        """
+        Set display direction
+
+        :param direction:set int to change display direction, value 0 (default), 1, 2, 3
+        """
+        self.framebuf.rotation = direction

From 25b0b3617ad01c73659b732689b765a6505452d1 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Fri, 8 Jan 2021 12:17:55 +0800
Subject: [PATCH 02/43] Update README.rst

---
 README.rst | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/README.rst b/README.rst
index aaa33a7..e93d1f2 100644
--- a/README.rst
+++ b/README.rst
@@ -124,3 +124,17 @@ Documentation
 =============
 
 For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
+
+
+Additons
+=============
+
+1. Add rotation func
+
+.. code-block:: python
+   
+    matrix = matrices.Matrix8x8(spi, cs)
+    matrix.rotation(2)
+    
+
+

From 785481d1bef9c803259c2eb902fff0b468339bfb Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Fri, 8 Jan 2021 12:19:58 +0800
Subject: [PATCH 03/43] Update README.rst

---
 README.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.rst b/README.rst
index e93d1f2..a87e1e0 100644
--- a/README.rst
+++ b/README.rst
@@ -73,6 +73,7 @@ adafruit_max7219.Matrix8x8 Example
 
       spi = busio.SPI(clk, MOSI=din)
       display = matrices.Matrix8x8(spi, cs)
+      display.rotation(1)    #change display direction
       while True:
           display.brightness(3)
 

From 886581da0a4f65a2ab135d2b240ab4a352a112f2 Mon Sep 17 00:00:00 2001
From: bluejazzCHN <songjiangzhang@hotmail.com>
Date: Sun, 10 Jan 2021 15:29:35 +0800
Subject: [PATCH 04/43] Add  function that display string on mult matrix

---
 .vscode/settings.json                         | 22 +++++++++++++
 adafruit_max7219/matrices.py                  | 24 ++++++++++++--
 adafruit_max7219/max7219.py                   | 31 ++++++++++++++++++-
 .../max7219_disaplay_string_multi_matrix.py   | 20 ++++++++++++
 4 files changed, 93 insertions(+), 4 deletions(-)
 create mode 100644 .vscode/settings.json
 create mode 100644 examples/max7219_disaplay_string_multi_matrix.py

diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..2fe040b
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,22 @@
+{
+    "MicroPython.executeButton": [
+        {
+            "text": "▶",
+            "tooltip": "运行",
+            "alignment": "left",
+            "command": "extension.executeFile",
+            "priority": 3.5
+        }
+    ],
+    "MicroPython.syncButton": [
+        {
+            "text": "$(sync)",
+            "tooltip": "同步",
+            "alignment": "left",
+            "command": "extension.execute",
+            "priority": 4
+        }
+    ],
+    "python.linting.pylintEnabled": true,
+    "python.pythonPath": "/usr/bin/python3"
+}
\ No newline at end of file
diff --git a/adafruit_max7219/matrices.py b/adafruit_max7219/matrices.py
index 139076f..19bec26 100644
--- a/adafruit_max7219/matrices.py
+++ b/adafruit_max7219/matrices.py
@@ -27,6 +27,7 @@
 """
 from micropython import const
 from adafruit_max7219 import max7219
+import time
 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MAX7219.git"
@@ -45,8 +46,8 @@ class Matrix8x8(max7219.MAX7219):
     :param ~digitalio.DigitalInOut cs: digital in/out to use as chip select signal
     """
 
-    def __init__(self, spi, cs):
-        super().__init__(8, 8, spi, cs)
+    def __init__(self, spi, cs,num=1):
+        super().__init__(8, 8, spi, cs,num=num)
 
     def init_display(self):
         for cmd, data in (
@@ -56,7 +57,7 @@ def init_display(self):
             (_DECODEMODE, 0),
             (_SHUTDOWN, 1),
         ):
-            self.write_cmd(cmd, data)
+            self._write([cmd,data]*self.num)
 
         self.fill(0)
         self.show()
@@ -77,3 +78,20 @@ def clear_all(self):
         Clears all matrix leds.
         """
         self.fill(0)
+
+    def display_str(self, data, delay=1):
+        """
+        Display string on led matrix by matrix length
+
+        :param str: string that can be of any length.
+        :param delay: transfer time from one screen to  another screen. default value is 1s
+
+        """
+        i = -1
+        for char in data:
+            i+=1
+            self.fill(0)
+            self.text(char,1,0)
+            self.show_char_position(i%self.num)
+            if i%self.num == self.num -1:
+                time.sleep(delay)
diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 9f22c6b..1f09cac 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -66,6 +66,9 @@
 _DIGIT0 = const(1)
 _INTENSITY = const(10)
 
+MAX7219_REG_NOOP = 0x0
+
+
 
 class MAX7219:
     """
@@ -81,7 +84,7 @@ class MAX7219:
     """
 
     def __init__(
-        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0
+        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0,num=1
     ):
 
         self._chip_select = cs
@@ -96,6 +99,8 @@ def __init__(
 
         self.width = width
         self.height = height
+        self.num = num
+
 
         self.init_display()
 
@@ -157,3 +162,27 @@ def rotation(self, direction):
         :param direction:set int to change display direction, value 0 (default), 1, 2, 3
         """
         self.framebuf.rotation = direction
+
+        
+    def _write(self, data):
+        """
+        Send the bytes (which should comprise of alternating command, data values) over the SPI device.
+        
+        :param data: command collections
+        """
+
+        self._chip_select.value=False
+        with self._spi_device as my_spi_device:
+            my_spi_device.write(bytes(data))
+        self._chip_select.value=True
+
+
+    def show_char_position(self,position=0):
+        """
+        write data to the position that is one of multi led matrix
+
+        :param position: the position of matrix, value begin 0.
+
+        """
+        for ypos in range(8):
+            self._write([_DIGIT0 + ypos, self._buffer[ypos]]+([MAX7219_REG_NOOP, 0] *(position)))
diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
new file mode 100644
index 0000000..445d2c2
--- /dev/null
+++ b/examples/max7219_disaplay_string_multi_matrix.py
@@ -0,0 +1,20 @@
+# Display string on multi led matrix at any position
+# Author: songjiangzhang@hotmail.com
+# This sample use EPS32 S2 Board
+
+from adafruit_max7219 import matrices
+import board
+import busio
+import digitalio
+
+clk = board.IO4
+din = board.IO2
+cs = digitalio.DigitalInOut(board.IO3)
+
+spi = busio.SPI(clk, MOSI=din)
+display = matrices.Matrix8x8(spi, cs,4)
+display.framebuf.rotation =1  # rotate screen 
+
+display.clear_all()
+while True:
+    display.display_str('abc7568123456789asdfghj',2)

From 8e8807bc4286e71c10bbdbbf3b65112486168f43 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sun, 10 Jan 2021 16:31:26 +0800
Subject: [PATCH 05/43] Delete settings.json

---
 .vscode/settings.json | 22 ----------------------
 1 file changed, 22 deletions(-)
 delete mode 100644 .vscode/settings.json

diff --git a/.vscode/settings.json b/.vscode/settings.json
deleted file mode 100644
index 2fe040b..0000000
--- a/.vscode/settings.json
+++ /dev/null
@@ -1,22 +0,0 @@
-{
-    "MicroPython.executeButton": [
-        {
-            "text": "▶",
-            "tooltip": "运行",
-            "alignment": "left",
-            "command": "extension.executeFile",
-            "priority": 3.5
-        }
-    ],
-    "MicroPython.syncButton": [
-        {
-            "text": "$(sync)",
-            "tooltip": "同步",
-            "alignment": "left",
-            "command": "extension.execute",
-            "priority": 4
-        }
-    ],
-    "python.linting.pylintEnabled": true,
-    "python.pythonPath": "/usr/bin/python3"
-}
\ No newline at end of file

From a63e02eef71712450536a7e6e2a6314f16687b2e Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sun, 10 Jan 2021 16:44:24 +0800
Subject: [PATCH 06/43] Update max7219_disaplay_string_multi_matrix.py

---
 examples/max7219_disaplay_string_multi_matrix.py | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
index 445d2c2..850882c 100644
--- a/examples/max7219_disaplay_string_multi_matrix.py
+++ b/examples/max7219_disaplay_string_multi_matrix.py
@@ -1,7 +1,3 @@
-# Display string on multi led matrix at any position
-# Author: songjiangzhang@hotmail.com
-# This sample use EPS32 S2 Board
-
 from adafruit_max7219 import matrices
 import board
 import busio

From 7562fbea4ee6ccb632652099b0e49ed6ee9c1c76 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 22:20:20 +0800
Subject: [PATCH 07/43] update functions to support the cascaded matrix.

You can control the display on any one in the cascaded matrix.
---
 adafruit_max7219/max7219.py | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index ff30c32..f373754 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -96,12 +96,14 @@ def brightness(self, value):
             raise ValueError("Brightness out of range")
         self.write_cmd(_INTENSITY, value)
 
-    def show(self):
+    def show(self, number = 1):
         """
         Updates the display.
+        
+        :param int number: whichi one is in the cascaded matrixs, default is 1.
         """
         for ypos in range(8):
-            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos])
+            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos],number)
 
     def fill(self, bit_value):
         """
@@ -126,10 +128,15 @@ def scroll(self, delta_x, delta_y):
         """Srcolls the display using delta_x,delta_y."""
         self.framebuf.scroll(delta_x, delta_y)
 
-    def write_cmd(self, cmd, data):
+    def write_cmd(self, cmd, data,number = 1):
         # pylint: disable=no-member
-        """Writes a command to spi device."""
+        """Writes a command to spi device.
+        
+        :param int number: whichi one is in the cascaded matrixs, default is 1.
+        """
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
         with self._spi_device as my_spi_device:
-            my_spi_device.write(bytearray([cmd, data]))
+            my_spi_device.write(bytearray([cmd, data])) # send cmd and data to one(number is) of the cascaded matrixs.
+            for i in range(number-1):
+                my_spi_device.write(bytearray([0, 0]))  # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.

From 2af5d94eeabacbad1955f38df01c848eb562c5fb Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 22:30:07 +0800
Subject: [PATCH 08/43] demo in the cascaded matrix

---
 examples/max7219_cascade.py | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 examples/max7219_cascade.py

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
new file mode 100644
index 0000000..6c23534
--- /dev/null
+++ b/examples/max7219_cascade.py
@@ -0,0 +1,36 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+from adafruit_max7219 import matrices
+from board import TX, RX, A2
+import busio
+import digitalio
+import time
+import random
+
+clk = RX
+din = TX
+cs = digitalio.DigitalInOut(A2)      
+        
+spi = busio.SPI(clk, MOSI=din)
+display = matrices.Matrix8x8(spi, cs)
+while True:
+    display.brightness(1)
+
+    display.fill(1)
+    display.pixel(3, 3)
+    display.pixel(3, 4)
+    display.pixel(4, 3)
+    display.pixel(4, 4)
+    display.show()
+    time.sleep(3.0)
+
+    display.clear_all()
+    s = 'Hello, World!'
+    display.text(s[random.randint(0,len(s)-1)],0,0)
+    display.show(1) # show random char in string s on the the first of cascaded matrixs.
+    for c in range(len(s)*8):
+        display.fill(0)
+        display.text(s,-c,0)
+        display.show(2) # show scrolled string on the second of cascaded matrixs
+        time.sleep(0.25)

From 93e5b3a4b1a18091cb302235b5518673d8e68746 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 22:45:40 +0800
Subject: [PATCH 09/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 6c23534..96eda80 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -1,12 +1,12 @@
 # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
 # SPDX-License-Identifier: MIT
 
-from adafruit_max7219 import matrices
-from board import TX, RX, A2
-import busio
-import digitalio
 import time
 import random
+from board import TX, RX, A1
+import busio
+import digitalio
+from adafruit_max7219 import matrices
 
 clk = RX
 din = TX
@@ -14,6 +14,7 @@
         
 spi = busio.SPI(clk, MOSI=din)
 display = matrices.Matrix8x8(spi, cs)
+
 while True:
     display.brightness(1)
 

From 84ea72a27628b646ba41cb2a51ae931eafcd041d Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 22:58:19 +0800
Subject: [PATCH 10/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 96eda80..bb82588 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -3,7 +3,7 @@
 
 import time
 import random
-from board import TX, RX, A1
+from board import TX, RX, A2
 import busio
 import digitalio
 from adafruit_max7219 import matrices

From 6dc7b99c427967e486b722a6bd2113c7d1ce2d70 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:01:20 +0800
Subject: [PATCH 11/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index bb82588..274ae5b 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -29,9 +29,13 @@
     display.clear_all()
     s = 'Hello, World!'
     display.text(s[random.randint(0,len(s)-1)],0,0)
-    display.show(1) # show random char in string s on the the first of cascaded matrixs.
+
+    # show random char in string s on the the first of cascaded matrixs.
+    display.show(1) 
     for c in range(len(s)*8):
         display.fill(0)
         display.text(s,-c,0)
-        display.show(2) # show scrolled string on the second of cascaded matrixs
+        
+        # show scrolled string on the second of cascaded matrixs.
+        display.show(2) 
         time.sleep(0.25)

From 816c5ac4be0778f06a215bf122ce173143c389f9 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:07:23 +0800
Subject: [PATCH 12/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index f373754..3c7513d 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -137,6 +137,8 @@ def write_cmd(self, cmd, data,number = 1):
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
         with self._spi_device as my_spi_device:
-            my_spi_device.write(bytearray([cmd, data])) # send cmd and data to one(number is) of the cascaded matrixs.
+            my_spi_device.write(bytearray([cmd, data])) 
+            
+            # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(number-1):
-                my_spi_device.write(bytearray([0, 0]))  # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
+                my_spi_device.write(bytearray([0, 0]))  

From 2e2a62a0d2e783c4e99b0de9b14be35f01cbc85c Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:24:25 +0800
Subject: [PATCH 13/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 3c7513d..a8a5b8d 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -140,5 +140,5 @@ def write_cmd(self, cmd, data,number = 1):
             my_spi_device.write(bytearray([cmd, data])) 
             
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(number-1):
+            for i in range(0，number-1):
                 my_spi_device.write(bytearray([0, 0]))  

From dd17d27520d2ac254b1f89f4bea6ebcd0a95e5de Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:26:29 +0800
Subject: [PATCH 14/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index a8a5b8d..9d6a980 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -141,4 +141,5 @@ def write_cmd(self, cmd, data,number = 1):
             
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(0，number-1):
-                my_spi_device.write(bytearray([0, 0]))  
+                my_spi_device.write(bytearray([0, 0]))
+                i = 0

From 022855b96ab1328cbe8a1269c3e323b599b3cfca Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:31:27 +0800
Subject: [PATCH 15/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 9d6a980..b75568c 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -140,6 +140,6 @@ def write_cmd(self, cmd, data,number = 1):
             my_spi_device.write(bytearray([cmd, data])) 
             
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(0，number-1):
+            for i in range(number-1):
                 my_spi_device.write(bytearray([0, 0]))
                 i = 0

From a1e3e4af11b17d74cbe6674f9b8138b774387768 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:37:18 +0800
Subject: [PATCH 16/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index b75568c..422018f 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -142,4 +142,4 @@ def write_cmd(self, cmd, data,number = 1):
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(number-1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = 0
+                i = i-0

From 6a0081761e8766fbce363404a9a5708f52c4392e Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 5 Apr 2021 23:55:17 +0800
Subject: [PATCH 17/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 422018f..12fe286 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -136,6 +136,7 @@ def write_cmd(self, cmd, data,number = 1):
         """
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
+        
         with self._spi_device as my_spi_device:
             my_spi_device.write(bytearray([cmd, data])) 
             

From 44f0ced9ca5aee251ddb896b8dedd12436482c12 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 17:26:42 +0800
Subject: [PATCH 18/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 12fe286..8a231a5 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -96,11 +96,12 @@ def brightness(self, value):
             raise ValueError("Brightness out of range")
         self.write_cmd(_INTENSITY, value)
 
-    def show(self, number = 1):
+    def show(self, number = 1,t_num=1):
         """
         Updates the display.
         
-        :param int number: whichi one is in the cascaded matrixs, default is 1.
+        :param int number: which one is in the cascaded matrixs, default is 1.
+        :param int t_num: total number of cascaded Matrixs,default is 1.
         """
         for ypos in range(8):
             self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos],number)
@@ -128,19 +129,22 @@ def scroll(self, delta_x, delta_y):
         """Srcolls the display using delta_x,delta_y."""
         self.framebuf.scroll(delta_x, delta_y)
 
-    def write_cmd(self, cmd, data,number = 1):
+    def write_cmd(self, cmd, data,number = 1，t_num=1):
         # pylint: disable=no-member
         """Writes a command to spi device.
         
         :param int number: whichi one is in the cascaded matrixs, default is 1.
+        :param int t_num: total number of cascaded Matrixs,default is 1.
         """
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
         
         with self._spi_device as my_spi_device:
+            for i in range(number,t_num):
+                my_spi_device.write(bytearray([0, 0]))  # send Noop to ones behind number Matrix
+                
             my_spi_device.write(bytearray([cmd, data])) 
             
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(number-1):
+            for i in range(0,number-1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = i-0

From 91ed196e8d2e6d8f662aaee52ccc9bb4054ef6ab Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 17:27:46 +0800
Subject: [PATCH 19/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 274ae5b..b96e6b0 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -31,11 +31,11 @@
     display.text(s[random.randint(0,len(s)-1)],0,0)
 
     # show random char in string s on the the first of cascaded matrixs.
-    display.show(1) 
+    display.show(1,2) 
     for c in range(len(s)*8):
         display.fill(0)
         display.text(s,-c,0)
         
         # show scrolled string on the second of cascaded matrixs.
-        display.show(2) 
+        display.show(2,2) 
         time.sleep(0.25)

From 43d103b7468e507bbce2f188048b32293af707c2 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 17:33:26 +0800
Subject: [PATCH 20/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 8a231a5..010e5bf 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -104,7 +104,7 @@ def show(self, number = 1,t_num=1):
         :param int t_num: total number of cascaded Matrixs,default is 1.
         """
         for ypos in range(8):
-            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos],number)
+            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos],number,t_num)
 
     def fill(self, bit_value):
         """
@@ -129,7 +129,7 @@ def scroll(self, delta_x, delta_y):
         """Srcolls the display using delta_x,delta_y."""
         self.framebuf.scroll(delta_x, delta_y)
 
-    def write_cmd(self, cmd, data,number = 1，t_num=1):
+    def write_cmd(self, cmd, data,number = 1, t_num=1):
         # pylint: disable=no-member
         """Writes a command to spi device.
         

From 47d9c90bffc8b5e7b44e5ac998e2aa63aea121f0 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 21:14:53 +0800
Subject: [PATCH 21/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 010e5bf..3019bd0 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -148,3 +148,4 @@ def write_cmd(self, cmd, data,number = 1, t_num=1):
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(0,number-1):
                 my_spi_device.write(bytearray([0, 0]))
+                i = i - i

From bcbe4136f836e6e240b20387d2a4a558997a9f8b Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 21:38:10 +0800
Subject: [PATCH 22/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index b96e6b0..895bfa1 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -1,6 +1,3 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
-# SPDX-License-Identifier: MIT
-
 import time
 import random
 from board import TX, RX, A2
@@ -17,7 +14,6 @@
 
 while True:
     display.brightness(1)
-
     display.fill(1)
     display.pixel(3, 3)
     display.pixel(3, 4)
@@ -25,13 +21,13 @@
     display.pixel(4, 4)
     display.show()
     time.sleep(3.0)
-
     display.clear_all()
     s = 'Hello, World!'
     display.text(s[random.randint(0,len(s)-1)],0,0)
 
     # show random char in string s on the the first of cascaded matrixs.
-    display.show(1,2) 
+    display.show(1,2)
+
     for c in range(len(s)*8):
         display.fill(0)
         display.text(s,-c,0)

From 76a8dbfa3c4c6f846a89701aa4e3b96c9b8dca6e Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 21:53:01 +0800
Subject: [PATCH 23/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 895bfa1..dfe8b22 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -13,13 +13,6 @@
 display = matrices.Matrix8x8(spi, cs)
 
 while True:
-    display.brightness(1)
-    display.fill(1)
-    display.pixel(3, 3)
-    display.pixel(3, 4)
-    display.pixel(4, 3)
-    display.pixel(4, 4)
-    display.show()
     time.sleep(3.0)
     display.clear_all()
     s = 'Hello, World!'

From 3fabbb83818937f16e7cf0b431f6067593b80f20 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 23:10:02 +0800
Subject: [PATCH 24/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 37 +++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index dfe8b22..5cb4f04 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -13,18 +13,27 @@
 display = matrices.Matrix8x8(spi, cs)
 
 while True:
-    time.sleep(3.0)
-    display.clear_all()
-    s = 'Hello, World!'
-    display.text(s[random.randint(0,len(s)-1)],0,0)
-
-    # show random char in string s on the the first of cascaded matrixs.
-    display.show(1,2)
-
-    for c in range(len(s)*8):
-        display.fill(0)
-        display.text(s,-c,0)
+        display.clear_all()
+        s = 'Hello, World!'
+        
+        #Demo One: cascaded matrix with two max7219
+        # show random char in string s on the the first of cascaded matrixs.
+        # show scroll string s on the second of cascaded matrixs.
+        display.text(s[random.randint(0,len(s)-1)],0,0)
+        display.show(1,2)
         
-        # show scrolled string on the second of cascaded matrixs.
-        display.show(2,2) 
-        time.sleep(0.25)
+        for c in range(len(s)*8):
+                display.fill(0)
+                display.text(s,-c,0)
+                display.show(2,2) 
+                time.sleep(0.25)
+                
+        #Demo two: scroll string s on the cascaded matrix with two max7219
+        for c in range(len(s)*8):
+                display.fill(0)
+                display.text(s,-c,0)
+                display.show(1,2)
+                display.fill(0)
+                display.text(s,-c+8,0)
+                display.show(2,2)
+                time.sleep(0.25)

From ec499b4ff34f67e2c419e5da1bf4c682df772bdb Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 23:27:58 +0800
Subject: [PATCH 25/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 5cb4f04..61f4a1f 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2021 bluejazzCHN for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
 import time
 import random
 from board import TX, RX, A2

From 227a3842ae9cedb05c6c2cd15985ced1cd2ebf62 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 23:44:09 +0800
Subject: [PATCH 26/43] Update max7219_cascade.py

---
 examples/max7219_cascade.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index 61f4a1f..fcea271 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -22,21 +22,21 @@
         #Demo One: cascaded matrix with two max7219
         # show random char in string s on the the first of cascaded matrixs.
         # show scroll string s on the second of cascaded matrixs.
-        display.text(s[random.randint(0,len(s)-1)],0,0)
-        display.show(1,2)
+        display.text(s[random.randint(0, len(s)-1)], 0, 0)
+        display.show(1, 2)
         
         for c in range(len(s)*8):
                 display.fill(0)
-                display.text(s,-c,0)
-                display.show(2,2) 
+                display.text(s, -c, 0)
+                display.show(2, 2) 
                 time.sleep(0.25)
                 
         #Demo two: scroll string s on the cascaded matrix with two max7219
         for c in range(len(s)*8):
                 display.fill(0)
-                display.text(s,-c,0)
-                display.show(1,2)
+                display.text(s, -c, 0)
+                display.show(1, 2)
                 display.fill(0)
-                display.text(s,-c+8,0)
-                display.show(2,2)
+                display.text(s, -c+8, 0)
+                display.show(2, 2)
                 time.sleep(0.25)

From ac117b1402e5c74f05140a15e5efa595110b1319 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 23:50:29 +0800
Subject: [PATCH 27/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 3019bd0..c0c775c 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -96,7 +96,7 @@ def brightness(self, value):
             raise ValueError("Brightness out of range")
         self.write_cmd(_INTENSITY, value)
 
-    def show(self, number = 1,t_num=1):
+    def show(self, number=1, t_num=1):
         """
         Updates the display.
         
@@ -104,7 +104,7 @@ def show(self, number = 1,t_num=1):
         :param int t_num: total number of cascaded Matrixs,default is 1.
         """
         for ypos in range(8):
-            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos],number,t_num)
+            self.write_cmd(_DIGIT0 + ypos, self._buffer[ypos], number, t_num)
 
     def fill(self, bit_value):
         """
@@ -129,7 +129,7 @@ def scroll(self, delta_x, delta_y):
         """Srcolls the display using delta_x,delta_y."""
         self.framebuf.scroll(delta_x, delta_y)
 
-    def write_cmd(self, cmd, data,number = 1, t_num=1):
+    def write_cmd(self, cmd, data, number=1, t_num=1):
         # pylint: disable=no-member
         """Writes a command to spi device.
         
@@ -140,12 +140,12 @@ def write_cmd(self, cmd, data,number = 1, t_num=1):
         self._chip_select.value = False
         
         with self._spi_device as my_spi_device:
-            for i in range(number,t_num):
+            for i in range(number, t_num):
                 my_spi_device.write(bytearray([0, 0]))  # send Noop to ones behind number Matrix
                 
             my_spi_device.write(bytearray([cmd, data])) 
             
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(0,number-1):
+            for i in range(0, number-1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = i - i
+                i = i-i

From 18da08cb5b307af7446ba1952800c225c207feeb Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 6 Apr 2021 23:51:21 +0800
Subject: [PATCH 28/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index c0c775c..319b3b6 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -1,5 +1,6 @@
 # SPDX-FileCopyrightText: 2016 Philip R. Moyer  for Adafruit Industries
 # SPDX-FileCopyrightText: 2016 Radomir Dopieralski for Adafruit Industries
+# SPDX-FileCopyrightText: 2021 bluejazzCHN for Adafruit Industries
 #
 # SPDX-License-Identifier: MIT
 

From 5d7d62a25dbf94fb5605709c768a3986ec99cf01 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sat, 10 Apr 2021 13:39:12 +0800
Subject: [PATCH 29/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 319b3b6..e42792c 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -150,3 +150,11 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
             for i in range(0, number-1):
                 my_spi_device.write(bytearray([0, 0]))
                 i = i-i
+                
+    def rotation(self, direction):
+        """
+        Set display direction
+
+        :param direction:set int to change display direction, value 0 (default), 1, 2, 3
+        """
+        self.framebuf.rotation = direction

From 50cbbd88d0ce8f614b92067ddd0253f05ba3f53f Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sat, 10 Apr 2021 14:31:00 +0800
Subject: [PATCH 30/43] Add files via upload

---
 examples/max7219_cascade.py | 50 ++++++++++++++++++-------------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/examples/max7219_cascade.py b/examples/max7219_cascade.py
index fcea271..23f5203 100644
--- a/examples/max7219_cascade.py
+++ b/examples/max7219_cascade.py
@@ -10,33 +10,33 @@
 
 clk = RX
 din = TX
-cs = digitalio.DigitalInOut(A2)      
-        
+cs = digitalio.DigitalInOut(A2)
+
 spi = busio.SPI(clk, MOSI=din)
 display = matrices.Matrix8x8(spi, cs)
 
 while True:
-        display.clear_all()
-        s = 'Hello, World!'
-        
-        #Demo One: cascaded matrix with two max7219
-        # show random char in string s on the the first of cascaded matrixs.
-        # show scroll string s on the second of cascaded matrixs.
-        display.text(s[random.randint(0, len(s)-1)], 0, 0)
+    display.clear_all()
+    s = "Hello, World!"
+
+    # Demo One: cascaded matrix with two max7219
+    # show random char in string s on the the first of cascaded matrixs.
+    # show scroll string s on the second of cascaded matrixs.
+    display.text(s[random.randint(0, len(s) - 1)], 0, 0)
+    display.show(1, 2)
+
+    for c in range(len(s) * 8):
+        display.fill(0)
+        display.text(s, -c, 0)
+        display.show(2, 2)
+        time.sleep(0.25)
+
+    # Demo two: scroll string s on the cascaded matrix with two max7219
+    for c in range(len(s) * 8):
+        display.fill(0)
+        display.text(s, -c, 0)
         display.show(1, 2)
-        
-        for c in range(len(s)*8):
-                display.fill(0)
-                display.text(s, -c, 0)
-                display.show(2, 2) 
-                time.sleep(0.25)
-                
-        #Demo two: scroll string s on the cascaded matrix with two max7219
-        for c in range(len(s)*8):
-                display.fill(0)
-                display.text(s, -c, 0)
-                display.show(1, 2)
-                display.fill(0)
-                display.text(s, -c+8, 0)
-                display.show(2, 2)
-                time.sleep(0.25)
+        display.fill(0)
+        display.text(s, -c + 8, 0)
+        display.show(2, 2)
+        time.sleep(0.25)

From d1e84ff86695be2a0d47ac38095d0adea41bd977 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sat, 10 Apr 2021 14:31:20 +0800
Subject: [PATCH 31/43] Add files via upload

---
 adafruit_max7219/max7219.py | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index e42792c..693e6ff 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -139,18 +139,20 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
         """
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
-        
+
         with self._spi_device as my_spi_device:
             for i in range(number, t_num):
-                my_spi_device.write(bytearray([0, 0]))  # send Noop to ones behind number Matrix
-                
-            my_spi_device.write(bytearray([cmd, data])) 
-            
+                my_spi_device.write(
+                    bytearray([0, 0])
+                )  # send Noop to ones behind number Matrix
+
+            my_spi_device.write(bytearray([cmd, data]))
+
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(0, number-1):
+            for i in range(0, number - 1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = i-i
-                
+                i = i - i
+
     def rotation(self, direction):
         """
         Set display direction

From f2d029ea3c4096f3ab18881e7b702eef5613bc06 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sat, 10 Apr 2021 14:42:34 +0800
Subject: [PATCH 32/43] Add files via upload


From 086edbb2894678a71dd6d08cfe0682dbb4541624 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Sat, 10 Apr 2021 15:11:15 +0800
Subject: [PATCH 33/43] Add files via upload

---
 adafruit_max7219/max7219.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 693e6ff..1d63530 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -140,11 +140,10 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
         # print('cmd {} data {}'.format(cmd,data))
         self._chip_select.value = False
 
+        # send Noop to ones behind number Matrix
         with self._spi_device as my_spi_device:
             for i in range(number, t_num):
-                my_spi_device.write(
-                    bytearray([0, 0])
-                )  # send Noop to ones behind number Matrix
+                my_spi_device.write(bytearray([0, 0]))  
 
             my_spi_device.write(bytearray([cmd, data]))
 

From f071e0c0d78d8313e1e118ab0030ca21212fe9e4 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 12 Apr 2021 21:03:43 +0800
Subject: [PATCH 34/43] Add files via upload

---
 adafruit_max7219/max7219.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 1d63530..50bd06b 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -143,7 +143,7 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
         # send Noop to ones behind number Matrix
         with self._spi_device as my_spi_device:
             for i in range(number, t_num):
-                my_spi_device.write(bytearray([0, 0]))  
+                my_spi_device.write(bytearray([0, 0]))
 
             my_spi_device.write(bytearray([cmd, data]))
 

From edabb16604bf6dd390f6f0d54c08ed4297f5fbc6 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 12 Apr 2021 21:10:23 +0800
Subject: [PATCH 35/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 14 --------------
 1 file changed, 14 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 50bd06b..82bd2b0 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -10,31 +10,22 @@
 CircuitPython library to support MAX7219 LED Matrix/Digit Display Driver.
 This library supports the use of the MAX7219-based display in CircuitPython,
 either an 8x8 matrix or a 8 digit 7-segment numeric display.
-
 See Also
 =========
 * matrices.Maxtrix8x8 is a class support an 8x8 led matrix display
 * bcddigits.BCDDigits is a class that support the 8 digit 7-segment display
-
 Beware that most CircuitPython compatible hardware are 3.3v logic level! Make
 sure that the input pin is 5v tolerant.
-
 * Author(s): Michael McWethy
-
 Implementation Notes
 --------------------
 **Hardware:**
-
 * Adafruit `MAX7219CNG LED Matrix/Digit Display Driver -
   MAX7219 <https://www.adafruit.com/product/453>`_ (Product ID: 453)
-
 **Software and Dependencies:**
-
 * Adafruit CircuitPython firmware for the ESP8622 and M0-based boards:
   https://github.com/adafruit/circuitpython/releases
-
 * Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
-
 **Notes:**
 #.  Datasheet: https://cdn-shop.adafruit.com/datasheets/MAX7219.pdf
 """
@@ -55,7 +46,6 @@
 class MAX7219:
     """
     MAX2719 - driver for displays based on max719 chip_select
-
     :param int width: the number of pixels wide
     :param int height: the number of pixels high
     :param object spi: an spi busio or spi bitbangio object
@@ -90,7 +80,6 @@ def init_display(self):
     def brightness(self, value):
         """
         Controls the brightness of the display.
-
         :param int value: 0->15 dimmest to brightest
         """
         if not 0 <= value <= 15:
@@ -110,7 +99,6 @@ def show(self, number=1, t_num=1):
     def fill(self, bit_value):
         """
         Fill the display buffer.
-
         :param int bit_value: value > 0 set the buffer bit, else clears the buffer bit
         """
         self.framebuf.fill(bit_value)
@@ -118,7 +106,6 @@ def fill(self, bit_value):
     def pixel(self, xpos, ypos, bit_value=None):
         """
         Set one buffer bit
-
         :param xpos: x position to set bit
         :param ypos: y position to set bit
         :param int bit_value: value > 0 sets the buffer bit, else clears the buffer bit
@@ -155,7 +142,6 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
     def rotation(self, direction):
         """
         Set display direction
-
         :param direction:set int to change display direction, value 0 (default), 1, 2, 3
         """
         self.framebuf.rotation = direction

From 03f37cb1553cfa1f3a37b1fdf79b378981b69fc7 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 12 Apr 2021 21:16:32 +0800
Subject: [PATCH 36/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 82bd2b0..3c98849 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -137,7 +137,6 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(0, number - 1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = i - i
 
     def rotation(self, direction):
         """

From 0d7548db84b18c08fc9a2bdcbc23f9e42ca54566 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Mon, 12 Apr 2021 22:42:26 +0800
Subject: [PATCH 37/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 3c98849..82bd2b0 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -137,6 +137,7 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
             for i in range(0, number - 1):
                 my_spi_device.write(bytearray([0, 0]))
+                i = i - i
 
     def rotation(self, direction):
         """

From 6b08cb93f207897f673d5dc32065554020ae2b80 Mon Sep 17 00:00:00 2001
From: BluejazzCHN <songjiangzhang@hotmail.com>
Date: Sat, 29 May 2021 00:28:12 +0800
Subject: [PATCH 38/43] run pylint

---
 adafruit_max7219/max7219.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 82bd2b0..73c73b7 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -89,7 +89,6 @@ def brightness(self, value):
     def show(self, number=1, t_num=1):
         """
         Updates the display.
-        
         :param int number: which one is in the cascaded matrixs, default is 1.
         :param int t_num: total number of cascaded Matrixs,default is 1.
         """
@@ -120,7 +119,6 @@ def scroll(self, delta_x, delta_y):
     def write_cmd(self, cmd, data, number=1, t_num=1):
         # pylint: disable=no-member
         """Writes a command to spi device.
-        
         :param int number: whichi one is in the cascaded matrixs, default is 1.
         :param int t_num: total number of cascaded Matrixs,default is 1.
         """

From 8f1ac59098cc1e8cbc6633b900e1b8930c93c9cc Mon Sep 17 00:00:00 2001
From: jposada202020 <jquintana202020@gmail.com>
Date: Fri, 28 May 2021 13:24:01 -0400
Subject: [PATCH 39/43] solvind_docs

---
 adafruit_max7219/max7219.py | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index 73c73b7..b0458f6 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -10,22 +10,32 @@
 CircuitPython library to support MAX7219 LED Matrix/Digit Display Driver.
 This library supports the use of the MAX7219-based display in CircuitPython,
 either an 8x8 matrix or a 8 digit 7-segment numeric display.
+
 See Also
 =========
 * matrices.Maxtrix8x8 is a class support an 8x8 led matrix display
 * bcddigits.BCDDigits is a class that support the 8 digit 7-segment display
+
 Beware that most CircuitPython compatible hardware are 3.3v logic level! Make
 sure that the input pin is 5v tolerant.
+
 * Author(s): Michael McWethy
+
 Implementation Notes
 --------------------
 **Hardware:**
-* Adafruit `MAX7219CNG LED Matrix/Digit Display Driver -
+
+* `Adafruit MAX7219CNG LED Matrix/Digit Display Driver -
   MAX7219 <https://www.adafruit.com/product/453>`_ (Product ID: 453)
+
 **Software and Dependencies:**
+
 * Adafruit CircuitPython firmware for the ESP8622 and M0-based boards:
   https://github.com/adafruit/circuitpython/releases
-* Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
+
+* Adafruit's Bus Device library:
+  https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
+
 **Notes:**
 #.  Datasheet: https://cdn-shop.adafruit.com/datasheets/MAX7219.pdf
 """

From 562c9a3a8aed4e81eff48dd15fcad28877729b9c Mon Sep 17 00:00:00 2001
From: jposada202020 <jquintana202020@gmail.com>
Date: Mon, 31 May 2021 11:27:34 -0400
Subject: [PATCH 40/43] solving_docs

---
 README.rst                                    |  5 +----
 adafruit_max7219/matrices.py                  | 17 +++++++-------
 adafruit_max7219/max7219.py                   | 22 +++++++++----------
 .../max7219_disaplay_string_multi_matrix.py   | 12 ++++++----
 4 files changed, 29 insertions(+), 27 deletions(-)

diff --git a/README.rst b/README.rst
index a87e1e0..383b1cb 100644
--- a/README.rst
+++ b/README.rst
@@ -133,9 +133,6 @@ Additons
 1. Add rotation func
 
 .. code-block:: python
-   
+
     matrix = matrices.Matrix8x8(spi, cs)
     matrix.rotation(2)
-    
-
-
diff --git a/adafruit_max7219/matrices.py b/adafruit_max7219/matrices.py
index 8e3f81b..f32c127 100644
--- a/adafruit_max7219/matrices.py
+++ b/adafruit_max7219/matrices.py
@@ -6,9 +6,10 @@
 `adafruit_max7219.matrices.Matrix8x8`
 ====================================================
 """
+import time
 from micropython import const
 from adafruit_max7219 import max7219
-import time
+
 
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MAX7219.git"
@@ -27,8 +28,8 @@ class Matrix8x8(max7219.MAX7219):
     :param ~digitalio.DigitalInOut cs: digital in/out to use as chip select signal
     """
 
-    def __init__(self, spi, cs,num=1):
-        super().__init__(8, 8, spi, cs,num=num)
+    def __init__(self, spi, cs, num=1):
+        super().__init__(8, 8, spi, cs, num=num)
 
     def init_display(self):
         for cmd, data in (
@@ -38,7 +39,7 @@ def init_display(self):
             (_DECODEMODE, 0),
             (_SHUTDOWN, 1),
         ):
-            self._write([cmd,data]*self.num)
+            self._write([cmd, data] * self.num)
 
         self.fill(0)
         self.show()
@@ -70,9 +71,9 @@ def display_str(self, data, delay=1):
         """
         i = -1
         for char in data:
-            i+=1
+            i += 1
             self.fill(0)
-            self.text(char,1,0)
-            self.show_char_position(i%self.num)
-            if i%self.num == self.num -1:
+            self.text(char, 1, 0)
+            self.show_char_position(i % self.num)
+            if i % self.num == self.num - 1:
                 time.sleep(delay)
diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index f033930..0333476 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -53,7 +53,6 @@
 MAX7219_REG_NOOP = 0x0
 
 
-
 class MAX7219:
     """
     MAX2719 - driver for displays based on max719 chip_select
@@ -68,7 +67,7 @@ class MAX7219:
     """
 
     def __init__(
-        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0,num=1
+        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0, num=1
     ):
 
         self._chip_select = cs
@@ -85,7 +84,6 @@ def __init__(
         self.height = height
         self.num = num
 
-
         self.init_display()
 
     def init_display(self):
@@ -147,21 +145,20 @@ def rotation(self, direction):
         """
         self.framebuf.rotation = direction
 
-        
     def _write(self, data):
         """
-        Send the bytes (which should comprise of alternating command, data values) over the SPI device.
-        
+        Send the bytes (which should comprise of alternating command, data values)
+        over the SPI device.
+
         :param data: command collections
         """
 
-        self._chip_select.value=False
+        self._chip_select.value = False
         with self._spi_device as my_spi_device:
             my_spi_device.write(bytes(data))
-        self._chip_select.value=True
-
+        self._chip_select.value = True
 
-    def show_char_position(self,position=0):
+    def show_char_position(self, position=0):
         """
         write data to the position that is one of multi led matrix
 
@@ -169,4 +166,7 @@ def show_char_position(self,position=0):
 
         """
         for ypos in range(8):
-            self._write([_DIGIT0 + ypos, self._buffer[ypos]]+([MAX7219_REG_NOOP, 0] *(position)))
+            self._write(
+                [_DIGIT0 + ypos, self._buffer[ypos]]
+                + ([MAX7219_REG_NOOP, 0] * (position))
+            )
diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
index 850882c..930b49f 100644
--- a/examples/max7219_disaplay_string_multi_matrix.py
+++ b/examples/max7219_disaplay_string_multi_matrix.py
@@ -1,16 +1,20 @@
-from adafruit_max7219 import matrices
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+
 import board
 import busio
 import digitalio
+from adafruit_max7219 import matrices
 
 clk = board.IO4
 din = board.IO2
 cs = digitalio.DigitalInOut(board.IO3)
 
 spi = busio.SPI(clk, MOSI=din)
-display = matrices.Matrix8x8(spi, cs,4)
-display.framebuf.rotation =1  # rotate screen 
+display = matrices.Matrix8x8(spi, cs, 4)
+display.framebuf.rotation = 1  # rotate screen
 
 display.clear_all()
 while True:
-    display.display_str('abc7568123456789asdfghj',2)
+    display.display_str("abc7568123456789asdfghj", 2)

From 030fa8a575847aa7667b01a625095f03015598e6 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Tue, 1 Jun 2021 10:06:11 +0800
Subject: [PATCH 41/43] Revert "Pull/29"

---
 README.rst                                    | 12 -------
 adafruit_max7219/matrices.py                  | 25 ++------------
 adafruit_max7219/max7219.py                   | 34 +------------------
 .../max7219_disaplay_string_multi_matrix.py   | 20 -----------
 4 files changed, 4 insertions(+), 87 deletions(-)
 delete mode 100644 examples/max7219_disaplay_string_multi_matrix.py

diff --git a/README.rst b/README.rst
index 383b1cb..aaa33a7 100644
--- a/README.rst
+++ b/README.rst
@@ -73,7 +73,6 @@ adafruit_max7219.Matrix8x8 Example
 
       spi = busio.SPI(clk, MOSI=din)
       display = matrices.Matrix8x8(spi, cs)
-      display.rotation(1)    #change display direction
       while True:
           display.brightness(3)
 
@@ -125,14 +124,3 @@ Documentation
 =============
 
 For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
-
-
-Additons
-=============
-
-1. Add rotation func
-
-.. code-block:: python
-
-    matrix = matrices.Matrix8x8(spi, cs)
-    matrix.rotation(2)
diff --git a/adafruit_max7219/matrices.py b/adafruit_max7219/matrices.py
index f32c127..955e050 100644
--- a/adafruit_max7219/matrices.py
+++ b/adafruit_max7219/matrices.py
@@ -6,11 +6,9 @@
 `adafruit_max7219.matrices.Matrix8x8`
 ====================================================
 """
-import time
 from micropython import const
 from adafruit_max7219 import max7219
 
-
 __version__ = "0.0.0-auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_MAX7219.git"
 
@@ -28,8 +26,8 @@ class Matrix8x8(max7219.MAX7219):
     :param ~digitalio.DigitalInOut cs: digital in/out to use as chip select signal
     """
 
-    def __init__(self, spi, cs, num=1):
-        super().__init__(8, 8, spi, cs, num=num)
+    def __init__(self, spi, cs):
+        super().__init__(8, 8, spi, cs)
 
     def init_display(self):
         for cmd, data in (
@@ -39,7 +37,7 @@ def init_display(self):
             (_DECODEMODE, 0),
             (_SHUTDOWN, 1),
         ):
-            self._write([cmd, data] * self.num)
+            self.write_cmd(cmd, data)
 
         self.fill(0)
         self.show()
@@ -60,20 +58,3 @@ def clear_all(self):
         Clears all matrix leds.
         """
         self.fill(0)
-
-    def display_str(self, data, delay=1):
-        """
-        Display string on led matrix by matrix length
-
-        :param str: string that can be of any length.
-        :param delay: transfer time from one screen to  another screen. default value is 1s
-
-        """
-        i = -1
-        for char in data:
-            i += 1
-            self.fill(0)
-            self.text(char, 1, 0)
-            self.show_char_position(i % self.num)
-            if i % self.num == self.num - 1:
-                time.sleep(delay)
diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index a665ed7..b0458f6 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -52,8 +52,6 @@
 _DIGIT0 = const(1)
 _INTENSITY = const(10)
 
-MAX7219_REG_NOOP = 0x0
-
 
 class MAX7219:
     """
@@ -68,7 +66,7 @@ class MAX7219:
     """
 
     def __init__(
-        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0, num=1
+        self, width, height, spi, cs, *, baudrate=8000000, polarity=0, phase=0
     ):
 
         self._chip_select = cs
@@ -83,7 +81,6 @@ def __init__(
 
         self.width = width
         self.height = height
-        self.num = num
 
         self.init_display()
 
@@ -93,7 +90,6 @@ def init_display(self):
     def brightness(self, value):
         """
         Controls the brightness of the display.
-
         :param int value: 0->15 dimmest to brightest
         """
         if not 0 <= value <= 15:
@@ -112,7 +108,6 @@ def show(self, number=1, t_num=1):
     def fill(self, bit_value):
         """
         Fill the display buffer.
-
         :param int bit_value: value > 0 set the buffer bit, else clears the buffer bit
         """
         self.framebuf.fill(bit_value)
@@ -120,7 +115,6 @@ def fill(self, bit_value):
     def pixel(self, xpos, ypos, bit_value=None):
         """
         Set one buffer bit
-
         :param xpos: x position to set bit
         :param ypos: y position to set bit
         :param int bit_value: value > 0 sets the buffer bit, else clears the buffer bit
@@ -159,29 +153,3 @@ def rotation(self, direction):
         :param direction:set int to change display direction, value 0 (default), 1, 2, 3
         """
         self.framebuf.rotation = direction
-
-    def _write(self, data):
-        """
-        Send the bytes (which should comprise of alternating command, data values)
-        over the SPI device.
-
-        :param data: command collections
-        """
-
-        self._chip_select.value = False
-        with self._spi_device as my_spi_device:
-            my_spi_device.write(bytes(data))
-        self._chip_select.value = True
-
-    def show_char_position(self, position=0):
-        """
-        write data to the position that is one of multi led matrix
-
-        :param position: the position of matrix, value begin 0.
-
-        """
-        for ypos in range(8):
-            self._write(
-                [_DIGIT0 + ypos, self._buffer[ypos]]
-                + ([MAX7219_REG_NOOP, 0] * (position))
-            )
diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
deleted file mode 100644
index 930b49f..0000000
--- a/examples/max7219_disaplay_string_multi_matrix.py
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
-# SPDX-License-Identifier: MIT
-
-
-import board
-import busio
-import digitalio
-from adafruit_max7219 import matrices
-
-clk = board.IO4
-din = board.IO2
-cs = digitalio.DigitalInOut(board.IO3)
-
-spi = busio.SPI(clk, MOSI=din)
-display = matrices.Matrix8x8(spi, cs, 4)
-display.framebuf.rotation = 1  # rotate screen
-
-display.clear_all()
-while True:
-    display.display_str("abc7568123456789asdfghj", 2)

From 0b53afa9ae44c62cef9705312dc519c65a0bb5e0 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Wed, 2 Jun 2021 10:27:03 +0800
Subject: [PATCH 42/43] Delete max7219_disaplay_string_multi_matrix.py

this demo is for old API in the early PR.  so delete it
---
 .../max7219_disaplay_string_multi_matrix.py   | 20 -------------------
 1 file changed, 20 deletions(-)
 delete mode 100644 examples/max7219_disaplay_string_multi_matrix.py

diff --git a/examples/max7219_disaplay_string_multi_matrix.py b/examples/max7219_disaplay_string_multi_matrix.py
deleted file mode 100644
index 930b49f..0000000
--- a/examples/max7219_disaplay_string_multi_matrix.py
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
-# SPDX-License-Identifier: MIT
-
-
-import board
-import busio
-import digitalio
-from adafruit_max7219 import matrices
-
-clk = board.IO4
-din = board.IO2
-cs = digitalio.DigitalInOut(board.IO3)
-
-spi = busio.SPI(clk, MOSI=din)
-display = matrices.Matrix8x8(spi, cs, 4)
-display.framebuf.rotation = 1  # rotate screen
-
-display.clear_all()
-while True:
-    display.display_str("abc7568123456789asdfghj", 2)

From 004be6b95f25996b9dc3f3bb341fb47bc9cd9810 Mon Sep 17 00:00:00 2001
From: OldCodeFans <songjiangzhang@hotmail.com>
Date: Fri, 20 Aug 2021 23:02:51 +0800
Subject: [PATCH 43/43] Update max7219.py

---
 adafruit_max7219/max7219.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/adafruit_max7219/max7219.py b/adafruit_max7219/max7219.py
index a665ed7..bc80f21 100644
--- a/adafruit_max7219/max7219.py
+++ b/adafruit_max7219/max7219.py
@@ -149,9 +149,8 @@ def write_cmd(self, cmd, data, number=1, t_num=1):
             my_spi_device.write(bytearray([cmd, data]))
 
             # send Noop to all before number, if you want to know why, please ref to MAX7219.pdf.
-            for i in range(0, number - 1):
+            for _ in range(0, number - 1):
                 my_spi_device.write(bytearray([0, 0]))
-                i = i - i
 
     def rotation(self, direction):
         """