Cleanup old pio envs, fix some compilation issues with compile flags

Removed some legacy platformio envs that are not actively being maintained. But also fixed some bugs with different build flags that caused compilation issues.

Fixes #49

firmware/platformio.ini

@@ -8,6 +8,9 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
+[platformio]
+default_envs = view
+
 [base_config]
 platform = espressif32@3.4
 framework = arduino
@@ -24,50 +27,6 @@ lib_deps =
 build_flags =
   -DCORE_DEBUG_LEVEL=ARDUHAL_LOG_LEVEL_DEBUG
 
-[env:proto]
-extends = base_config
-board = esp32doit-devkit-v1
-lib_deps =
-  ${base_config.lib_deps}
-  bodmer/TFT_eSPI@2.4.25
-
-build_flags =
-  ${base_config.build_flags}
-  -DSK_DISPLAY=1
-
-  -DPIN_UH=27
-  -DPIN_UL=26
-  -DPIN_VH=25
-  -DPIN_VL=33
-  -DPIN_WH=32
-  -DPIN_WL=13
-  -DPIN_BUTTON_NEXT=36
-  -DPIN_BUTTON_PREV=-1
-  -DPIN_SDA=-1
-  -DPIN_SCL=-1
-  -DSENSOR_MT6701=1
-
-  -DDESCRIPTION_FONT=Roboto_Thin_24
-  -DDESCRIPTION_Y_OFFSET=20
-  -DVALUE_OFFSET=30
-  -DDRAW_ARC=0
-
-  -DUSER_SETUP_LOADED=1
-  -DGC9A01_DRIVER=1
-  -DCGRAM_OFFSET=1
-  -DTFT_WIDTH=240
-  -DTFT_HEIGHT=240
-  -DTFT_MISO=-1
-  -DTFT_MOSI=19
-  -DTFT_SCLK=18
-  -DTFT_CS=5
-  -DTFT_DC=16
-  -DTFT_RST=23
-  -DTFT_BL=4
-  -DLOAD_GLCD=1
-  -DLOAD_GFXFF=1
-  -DSPI_FREQUENCY=40000000
-
 [env:view]
 extends = base_config
 ; platform = https://github.com/platformio/platform-espressif32.git#feature/arduino-upstream
@@ -109,8 +68,6 @@ build_flags =
   -DPIN_LED_DATA=7
   -DPIN_LCD_BACKLIGHT=19
 
-  -DLEDC_CHANNEL_LCD_BACKLIGHT=0
-
   -DDESCRIPTION_FONT=Roboto_Thin_24
   -DDESCRIPTION_Y_OFFSET=20
   -DVALUE_OFFSET=30
@@ -147,26 +104,6 @@ build_flags =
   ; (SOC_GPIO_VALID_GPIO_MASK & ~(0ULL | _FL_BIT(34) | _FL_BIT(35) | _FL_BIT(36) | _FL_BIT(37) | _FL_BIT(38) | _FL_BIT(39)))
   -DSOC_GPIO_VALID_OUTPUT_GPIO_MASK=0x30EFFFFFF
 
-
-[env:handheld]
-extends = base_config
-board = tinypico
-
-build_flags =
-  ${base_config.build_flags}
-  -DSK_DISPLAY=0
-
-  -DPIN_UH=25
-  -DPIN_UL=26
-  -DPIN_VH=27
-  -DPIN_VL=15
-  -DPIN_WH=14
-  -DPIN_WL=4
-  -DPIN_BUTTON_NEXT=23
-  -DPIN_BUTTON_PREV=-1
-  -DPIN_SDA=33
-  -DPIN_SCL=32
-  -DSENSOR_TLV=1
   
 [env:handheld_tdisplay]
 extends = base_config
@@ -195,6 +132,7 @@ build_flags =
   -DPIN_MT_DATA=21
   -DPIN_MT_CLOCK=22
   -DPIN_MT_CSN=12
+  -DPIN_LCD_BACKLIGHT=4
 
   -DDESCRIPTION_FONT=FreeSans9pt7b
   -DDESCRIPTION_Y_OFFSET=80
@@ -212,7 +150,7 @@ build_flags =
   -DTFT_CS=5
   -DTFT_DC=16
   -DTFT_RST=23
-  -DTFT_BL=4
+  -DTFT_BL=-1
   -DLOAD_GLCD=1
   -DLOAD_GFXFF=1
   -DSPI_FREQUENCY=40000000

firmware/src/display_task.cpp

@@ -4,6 +4,8 @@
 
 #include "font/roboto_light_60.h"
 
+static const uint8_t LEDC_CHANNEL_LCD_BACKLIGHT = 0;
+
 DisplayTask::DisplayTask(const uint8_t task_core) : Task{"Display", 4048, 1, task_core} {
   knob_state_queue_ = xQueueCreate(1, sizeof(KnobState));
   assert(knob_state_queue_ != NULL);

firmware/src/mt6701_sensor.cpp

@@ -34,7 +34,7 @@ static uint8_t CRC6_43_18bit (uint32_t w_InputData)
  return b_CRC;
 } 
 
-
+#if SENSOR_MT6701
 
 MT6701Sensor::MT6701Sensor() {}
 
@@ -116,3 +116,5 @@ float MT6701Sensor::getSensorAngle() {
     }
     return rad;
 }
+
+#endif