Add PlatformIO and ARDUINO_TTGO_T_PICO_C3 support

.gitignore

@@ -0,0 +1,4 @@
+.pio/
+.DS_Store
+.vscode/
+

examples/BlynkNCP_LowLevel/ArduinoUtils.h

@@ -33,6 +33,8 @@
   #define SerialNCP   BLYNK_NCP_SERIAL
 #elif defined(ARDUINO_NANO_RP2040_CONNECT)
   #define SerialNCP   SerialNina
+#elif defined(ARDUINO_TTGO_T_PICO_C3)
+  #define SerialNCP   Serial2
 #elif defined(LINUX)
   #include <compat/LibSerialPort.h>
   #if !defined(BLYNK_NCP_PORT)

examples/BlynkNCP_LowLevel/BlynkNCP_LowLevel.ino

@@ -31,10 +31,14 @@ void setup()
   SerialDbg.begin(115200);
   waitSerialConsole(SerialDbg);
 
-  // Power-up NCP (if needed)
+  // Set up NCP (if needed)
 #if defined(ARDUINO_NANO_RP2040_CONNECT)
   pinMode(NINA_RESETN, OUTPUT);
   digitalWrite(NINA_RESETN, HIGH);
+#elif defined(ARDUINO_TTGO_T_PICO_C3)
+  SerialNCP.setFIFOSize(2048);
+  SerialNCP.setTX(8);
+  SerialNCP.setRX(9);
 #endif
 
   if (!ncpSetupSerial()) {

examples/BlynkNCP_LowLevel/platformio.ini

@@ -0,0 +1,56 @@
+; PlatformIO Project Configuration File
+; https://docs.platformio.org/page/projectconf.html
+
+[platformio]
+
+src_dir = .
+
+[env]
+framework = arduino
+monitor_speed = 115200
+
+lib_deps =
+    BlynkNcpDriver=symlink://../../
+
+build_flags =
+    -Wswitch -Wuninitialized
+    -Wunused-function
+    -Werror=return-type                 ; Fail on return type error
+
+[rp2040]
+platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+board_build.core = earlephilhower
+board_build.filesystem_size = 1M
+
+lib_ignore =
+    WiFi
+
+[rp2040:mbed]
+platform = raspberrypi
+
+lib_ignore =
+    WiFi
+    ArduinoOTA
+
+########################################################
+##  Dual-MCU boards
+########################################################
+
+[env:rp2040connect]
+extends = rp2040
+board = arduino_nano_connect
+board_build.filesystem_size = 8M
+
+[env:rp2040connect-mbed]
+extends = rp2040:mbed
+board = nanorp2040connect
+
+[env:t_pico_c3]
+extends = rp2040
+board = rpipico
+board_upload.maximum_size = 4194304
+board_build.filesystem_size = 2M
+
+build_flags =
+    ${env.build_flags}
+    -DARDUINO_TTGO_T_PICO_C3