zephyrSerial: Add int and double prints

Add more variants of prints like double and integer support.
Also, include zephyrSerial in Arduino.h so that it can be used with just
including Arduino.h

Signed-off-by: Dhruva Gole <[email protected]>

Author: DhruvaG2000

Diff for: cores/arduino/Arduino.h

@@ -9,4 +9,5 @@
 #include <zephyr/drivers/gpio.h>
 #include <zephyr/zephyr.h>
 
-#include <variants.h>
+#include <variants.h>
+#include <zephyrSerial.h>

Diff for: cores/arduino/zephyrSerial.cpp

@@ -24,6 +24,16 @@ size_t arduino::ZephyrSerial::print(char ch){
     return print_char(ch, false);
 }
 
+size_t arduino::ZephyrSerial::print(const int val) {
+    printk("%d",val);
+    return sizeof(int);
+}
+
+size_t arduino::ZephyrSerial::print(double d) {
+    printk("%0.4f",d);
+    return sizeof(double);
+}
+
 size_t arduino::ZephyrSerial::print(const int val, const int base) {
     if (base == 2) {   /* Todo: print Binary */
         printk("%d", val);

Diff for: cores/arduino/zephyrSerial.h

@@ -21,6 +21,8 @@ class ZephyrSerial {
     size_t begin(unsigned long int baudrate);  //TODO
 
     size_t print(const char c);
+    size_t print(const int val);
+    size_t print(double d);
     size_t print(const char * ptr);
     size_t print(const int val, const int base);
 

Diff for: module.conf

@@ -4,4 +4,5 @@ CONFIG_ARDUINO_API=y
 CONFIG_I2C=y
 CONFIG_NEWLIB_LIBC=y
 CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
+CONFIG_CBPRINTF_FP_SUPPORT=y
 CONFIG_RING_BUFFER=y