section `.text' will not fit in region` iram1_0_seg' #88

einsteinx2 · 2015-04-19T23:32:43Z

I'm trying to adapt https://github.com/cnlohr/ws2812esp8266 for use with the Arduino IDE, but I keep running into this error: section '.text' will not fit in region 'iram1_0_seg'

I'm using the latest code from this repo compiled myself, so I should have the latest fixes.

The text was updated successfully, but these errors were encountered:

igrr · 2015-04-21T12:38:46Z

Can you post your work-in-progress code somewhere? I suspect the reason is that the code from .cpp files is automatically placed into .irom0.text (see linker script), whereas code from .c files does not.
So if you are using cnlohr's code as is you are likely filling up the .iram.text section.

einsteinx2 · 2015-04-21T20:22:19Z

I'll post the code when I get home tonight.

einsteinx2 · 2015-04-22T03:49:19Z

Turned out that I needed to add ICACHE_FLASH_ATTR to all of the functions to move them out of region.

sticilface · 2015-05-04T12:04:31Z

Thought id give compiling the u8glib now that the iram has been increased. Guess what.. this error has gone. Only to be replaced by a new one... error below...



Build options changed, rebuilding all
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c: In function 'u8g_com_arduino_fast_parallel_init':
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:104:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[0] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:106:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[1] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:108:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[2] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:110:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[3] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:113:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[4] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:115:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[5] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:117:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[6] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_fast_parallel.c:119:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[7] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c: In function 'u8g_com_arduino_no_en_parallel_init':
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:87:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[0] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:89:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[1] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:91:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[2] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:93:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[3] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:96:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[4] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:98:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[5] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:100:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[6] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_no_en_parallel.c:102:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_data_port[7] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c: In function 'u8g_com_arduino_t6963_init':
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:92:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[0] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:93:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[0] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:94:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[0] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D0]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:97:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[1] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:98:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[1] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:99:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[1] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D1]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:102:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[2] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:103:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[2] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:104:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[2] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D2]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:107:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[3] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:108:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[3] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:109:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[3] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D3]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:112:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[4] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:113:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[4] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:114:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[4] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D4]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:117:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[5] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:118:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[5] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:119:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[5] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D5]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:122:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[6] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:123:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[6] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:124:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[6] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D6]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:127:27: warning: assignment from incompatible pointer type [enabled by default]
   u8g_output_data_port[7] =  portOutputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7]));
                           ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:128:26: warning: assignment from incompatible pointer type [enabled by default]
   u8g_input_data_port[7] =  portInputRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7]));
                          ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_com_arduino_t6963.c:129:20: warning: assignment from incompatible pointer type [enabled by default]
   u8g_mode_port[7] =  portModeRegister(digitalPinToPort(u8g->pin_list[U8G_PI_D7]));
                    ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_rot.c:48:1: warning: initialization from incompatible pointer type [enabled by default]
 u8g_dev_t u8g_dev_rot = { u8g_dev_rot_dummy_fn, NULL, NULL };
 ^
/Users/amelvin/Documents/Arduino/libraries/U8glib/utility/u8g_rot.c:48:1: warning: (near initialization for 'u8g_dev_rot.dev_fn') [enabled by default]
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_delay':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:77:26: error: 'GPI' undeclared (first use in this function)
   for(i=0;i<v;i++) reg = GPI;
                          ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:77:26: note: each undeclared identifier is reported only once for each function it appears in
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_write_start':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:32:22: error: 'GPEC' undeclared (first use in this function)
 #define SCL_HIGH()  (GPEC = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:81:3: note: in expansion of macro 'SCL_HIGH'
   SCL_HIGH();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:30:23: error: 'GPI' undeclared (first use in this function)
 #define SDA_READ()  ((GPI & (1 << twi_sda)) != 0)
                       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:83:7: note: in expansion of macro 'SDA_READ'
   if (SDA_READ() == 0) return false;
       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:28:22: error: 'GPES' undeclared (first use in this function)
 #define SDA_LOW()   (GPES = (1 << twi_sda)) //Enable SDA (becomes output and since GPO is 0 for the pin, it will pull the line low)
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:85:3: note: in expansion of macro 'SDA_LOW'
   SDA_LOW();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_write_stop':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:31:22: error: 'GPES' undeclared (first use in this function)
 #define SCL_LOW()   (GPES = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:92:3: note: in expansion of macro 'SCL_LOW'
   SCL_LOW();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:32:22: error: 'GPEC' undeclared (first use in this function)
 #define SCL_HIGH()  (GPEC = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:95:3: note: in expansion of macro 'SCL_HIGH'
   SCL_HIGH();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:33:23: error: 'GPI' undeclared (first use in this function)
 #define SCL_READ()  ((GPI & (1 << twi_scl)) != 0)
                       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:96:10: note: in expansion of macro 'SCL_READ'
   while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
          ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_write_bit':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:31:22: error: 'GPES' undeclared (first use in this function)
 #define SCL_LOW()   (GPES = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:106:3: note: in expansion of macro 'SCL_LOW'
   SCL_LOW();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:29:22: error: 'GPEC' undeclared (first use in this function)
 #define SDA_HIGH()  (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:107:12: note: in expansion of macro 'SDA_HIGH'
   if (bit) SDA_HIGH();
            ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:33:23: error: 'GPI' undeclared (first use in this function)
 #define SCL_READ()  ((GPI & (1 << twi_scl)) != 0)
                       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:111:10: note: in expansion of macro 'SCL_READ'
   while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
          ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_read_bit':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:31:22: error: 'GPES' undeclared (first use in this function)
 #define SCL_LOW()   (GPES = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:118:3: note: in expansion of macro 'SCL_LOW'
   SCL_LOW();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:29:22: error: 'GPEC' undeclared (first use in this function)
 #define SDA_HIGH()  (GPEC = (1 << twi_sda)) //Disable SDA (becomes input and since it has pullup it will go high) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:119:3: note: in expansion of macro 'SDA_HIGH'
   SDA_HIGH();
   ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:33:23: error: 'GPI' undeclared (first use in this function)
 #define SCL_READ()  ((GPI & (1 << twi_scl)) != 0)
                       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:122:10: note: in expansion of macro 'SCL_READ'
   while (SCL_READ() == 0 && (i++) < TWI_CLOCK_STRETCH);// Clock stretching (up to 100us)
          ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c: In function 'twi_readFrom':
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:30:23: error: 'GPI' undeclared (first use in this function)
 #define SDA_READ()  ((GPI & (1 << twi_sda)) != 0)
                       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:164:11: note: in expansion of macro 'SDA_READ'
     while(SDA_READ() == 0 && (i++) < 10){
           ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:31:22: error: 'GPES' undeclared (first use in this function)
 #define SCL_LOW()   (GPES = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:165:7: note: in expansion of macro 'SCL_LOW'
       SCL_LOW();
       ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:32:22: error: 'GPEC' undeclared (first use in this function)
 #define SCL_HIGH()  (GPEC = (1 << twi_scl)) 
                      ^
/Users/amelvin/git/Arduino/build/Arduino.app/Contents/Java/hardware/esp8266com/esp8266/cores/esp8266/core_esp8266_si2c.c:167:7: note: in expansion of macro 'SCL_HIGH'
       SCL_HIGH();
       ^
Error compiling.

probonopd · 2015-06-21T21:40:51Z

Nodemcu has u8glib running on ESP8266; maybe it can be ported to ESP8266/Arduino?
https://github.com/nodemcu/nodemcu-firmware/tree/master/app/u8glib

In the meantime, I am using https://gist.github.com/probonopd/bb7e1c04fb07bfad6034 to drive the OLED display.

tprochazka · 2015-10-23T20:58:54Z

I tried Adafruit_SSD1331 ad found similar problem with portOutputRegister() function

Adafruit_SSD1331\Adafruit_SSD1331.cpp:307:15: error: cannot convert 'volatile uint32_t* {aka volatile unsigned int*}' to 'PortReg* {aka volatile unsigned char*}' in assignment
     csportreg = portOutputRegister(digitalPinToPort(_cs));
               ^

It is some common problem or ESP8266 ex port?

Links2004 · 2015-10-23T22:33:35Z

the ESP is a 32Bit system the pointer can not match the 8Bit of the AVR-
the fastest way for GPIO changes on ESP is the GPOS and GPOC registers.
take a look here:
https://github.com/Links2004/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.cpp#L73-L75
https://github.com/Links2004/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.cpp#L159-L171
https://github.com/Links2004/Adafruit_ILI9341/blob/master/Adafruit_ILI9341.h#L213

may this verion of SSD1331 is working
https://github.com/me-no-dev/Adafruit_SSD1306

marvinroger · 2016-03-11T12:24:38Z

Sorry to comment on an old issue, but @igrr you said:

the code from .cpp files is automatically placed into .irom0.text (see linker script), whereas code from .c files does not.

Is this still a true statement? As a library developer I develop in C++, so do I have to add ICACHE_FLASH_ATTR?

igrr · 2016-03-11T12:27:16Z

That's not true now. This has been fixed somewhere after 2.0.0 i think, so now all code goes into flash by default. You can use ICACHE_RAM_ATTR for functions which have to be in RAM (like interrupt handlers).

marvinroger · 2016-03-11T12:40:55Z

So all these occurences are redundant? Thanks for your answer!

igrr · 2016-03-11T12:43:57Z

Not all of them. Some come from lwip header files, and those are irrelevant. Some files (like umm_malloc.c) are placed into IRAM by linker script, so there ICACHE_FLASH_ATTR works as an override. Some are redundant and will be cleaned up.

einsteinx2 closed this as completed Apr 22, 2015

av1024 mentioned this issue Apr 24, 2015

The Serial.setDebugOutput does not disable wifi messages #101

Closed

mkeyno mentioned this issue Apr 10, 2016

different ESP board diferent web server behiavior #1889

Closed

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section `.text' will not fit in region` iram1_0_seg' #88

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section .text' will not fit in region iram1_0_seg' #88

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einsteinx2 commented Apr 19, 2015

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igrr commented Mar 11, 2016

section `.text' will not fit in region` iram1_0_seg' #88

section `.text' will not fit in region` iram1_0_seg' #88