Made Variant selection easy via platformio.ini

Now it is easy to select between different variant builds via platformio.ini. Currently, 3 variants can be selected:
VARIANT_ADC
VARIANT_USART3
TRANSPOTTER

Note: For any particular needs, you can still change config.h according to your needs.

.travis.yml

@@ -43,8 +43,8 @@ matrix:
       - export PATH=$HOME/arm-gcc-toolchain/bin:$PATH
       before_script: arm-none-eabi-gcc --version
 
-    - name: pio genericSTM32F103RC
-      script: platformio run -e genericSTM32F103RC
+    - name: platformio
+      script: platformio run -e VARIANT_ADC -e VARIANT_USART3 -e TRANSPOTTER
       language: python
       python:
         - "2.7"

Inc/config.h

@@ -2,7 +2,13 @@
 #include "stm32f1xx_hal.h"
 
 // ############################### DEFINE FIRMWARE VARIANT ###############################
-// #define TRANSPOTTER                   // Uncomment this line for TRANSPORTER configuration
+// For variant selection, check platformio.ini 
+// For any particular needs, feel free to change this file according to your needs.
+
+// Select the VARIANT_ADC as default variant, in case NO variant is defined
+#if !defined(VARIANT_ADC) && !defined(VARIANT_USART3) && !defined(TRANSPOTTER)
+  #define VARIANT_ADC                  
+#endif
 
 // ############################### DO-NOT-TOUCH SETTINGS ###############################
 
@@ -100,16 +106,25 @@
 
 #define USART2_BAUD             38400                   // UART2 baud rate (long wired cable)
 #define USART2_WORDLENGTH       UART_WORDLENGTH_8B      // UART_WORDLENGTH_8B or UART_WORDLENGTH_9B
+#define USART3_BAUD             38400                   // UART3 baud rate (short wired cable)
+#define USART3_WORDLENGTH       UART_WORDLENGTH_8B      // UART_WORDLENGTH_8B or UART_WORDLENGTH_9B
+
+#if defined(VARIANT_ADC)
   // #define CONTROL_SERIAL_USART2                      // left sensor board cable, disable if ADC or PPM is used! For Arduino control check the hoverSerial.ino
   // #define FEEDBACK_SERIAL_USART2                     // left sensor board cable, disable if ADC or PPM is used!
   // #define DEBUG_SERIAL_USART2                        // left sensor board cable, disable if ADC or PPM is used!
 
-#ifndef TRANSPOTTER
-  #define USART3_BAUD             38400                   // UART3 baud rate (short wired cable)
-  #define USART3_WORDLENGTH       UART_WORDLENGTH_8B      // UART_WORDLENGTH_8B or UART_WORDLENGTH_9B
   // #define CONTROL_SERIAL_USART3                      // right sensor board cable, disable if I2C (nunchuck or lcd) is used! For Arduino control check the hoverSerial.ino
   // #define FEEDBACK_SERIAL_USART3                     // right sensor board cable, disable if I2C (nunchuck or lcd) is used!
   #define DEBUG_SERIAL_USART3                           // right sensor board cable, disable if I2C (nunchuck or lcd) is used!  
+#elif defined(VARIANT_USART3)
+  // #define CONTROL_SERIAL_USART2                      // left sensor board cable, disable if ADC or PPM is used! For Arduino control check the hoverSerial.ino
+  // #define FEEDBACK_SERIAL_USART2                     // left sensor board cable, disable if ADC or PPM is used!
+  // #define DEBUG_SERIAL_USART2                           // left sensor board cable, disable if ADC or PPM is used!
+
+  #define CONTROL_SERIAL_USART3                         // right sensor board cable, disable if I2C (nunchuck or lcd) is used! For Arduino control check the hoverSerial.ino
+  #define FEEDBACK_SERIAL_USART3                        // right sensor board cable, disable if I2C (nunchuck or lcd) is used!
+  // #define DEBUG_SERIAL_USART3                        // right sensor board cable, disable if I2C (nunchuck or lcd) is used!
 #endif
 
 #if defined(FEEDBACK_SERIAL_USART2) || defined(DEBUG_SERIAL_USART2)
@@ -133,7 +148,7 @@
  * For middle resting potis: Let the potis in the middle resting position, write value 1 to ADC1_MID and value 2 to ADC2_MID
  * Make, flash and test it.
  */
-#ifndef TRANSPOTTER
+#ifdef VARIANT_ADC
   #define CONTROL_ADC           // use ADC as input. disable CONTROL_SERIAL_USART2, FEEDBACK_SERIAL_USART2, DEBUG_SERIAL_USART2!
   // #define ADC1_MID_POT          // ADC1 middle resting poti: comment-out if NOT a middle resting poti
   #define ADC1_MIN 0            // min ADC1-value while poti at minimum-position (0 - 4095)

platformio.ini

@@ -5,7 +5,13 @@
 include_dir = Inc
 src_dir     = Src
 
-[env:genericSTM32F103RC]
+;=================== VARIANT SELECTION ==========================
+default_envs = VARIANT_ADC          ; Variant for control via ADC input
+;default_envs = VARIANT_USART3      ; Variant for Serial control via USART3 input
+;default_envs = TRANSPOTTER         ; Variant for TRANSPOTTER build https://github.com/Jan--Henrik/transpOtterNG   
+;================================================================
+
+[env:VARIANT_ADC]
 platform        = ststm32
 framework       = stm32cube
 board           = genericSTM32F103RC
@@ -25,3 +31,43 @@ build_flags =
     -Wl,-lm
     -g -ggdb        ; to generate correctly the 'firmware.elf' for STM STUDIO vizualization
 #    -Wl,-lnosys
+
+[env:VARIANT_USART3]
+platform        = ststm32
+framework       = stm32cube
+board           = genericSTM32F103RC
+debug_tool      = stlink
+upload_protocol = stlink
+
+; Serial Port settings (make sure the COM port is correct)
+monitor_port    = COM5
+monitor_speed   = 38400
+
+build_flags =
+    -I${PROJECT_DIR}/inc/
+    -DUSE_HAL_DRIVER
+    -DSTM32F103xE
+    -Wl,-T./STM32F103RCTx_FLASH.ld
+    -Wl,-lc
+    -Wl,-lm
+    -g -ggdb        ; to generate correctly the 'firmware.elf' for STM STUDIO vizualization
+#    -Wl,-lnosys
+    -D VARIANT_USART3
+
+[env:TRANSPOTTER]
+platform        = ststm32
+framework       = stm32cube
+board           = genericSTM32F103RC
+debug_tool      = stlink
+upload_protocol = stlink
+
+build_flags =
+    -I${PROJECT_DIR}/inc/
+    -DUSE_HAL_DRIVER
+    -DSTM32F103xE
+    -Wl,-T./STM32F103RCTx_FLASH.ld
+    -Wl,-lc
+    -Wl,-lm
+    -g -ggdb        ; to generate correctly the 'firmware.elf' for STM STUDIO vizualization
+#    -Wl,-lnosys
+    -D TRANSPOTTER