Get build (kinda, not really) running on a NRF52

Lots of NO_ESP32 to remove later...

platformio.ini

@@ -9,16 +9,12 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = tbeam
+default_envs = bare
 
 [common]
 ; default to a US frequency range, change it as needed for your region and hardware (CN, JP, EU433, EU865)
 hw_version = US
 
-; Common settings for ESP targes, mixin with extends = esp32_base
-[esp32_base]
-src_filter = 
-  ${env.src_filter} -<bare/>
 
 [env]
 platform = espressif32
@@ -30,7 +26,7 @@ board_build.partitions = partition-table.csv
 
 ; note: we add src to our include search path so that lmic_project_config can override
 ; FIXME: fix lib/BluetoothOTA dependency back on src/ so we can remove -Isrc
-build_flags = -Wall -Wextra -Wno-missing-field-initializers -Isrc -Isrc/rf95 -Os -Wl,-Map,.pio/build/output.map -DAXP_DEBUG_PORT=Serial -DHW_VERSION_${common.hw_version}
+build_flags = -Wno-missing-field-initializers -Isrc -Isrc/rf95 -Os -Wl,-Map,.pio/build/output.map -DAXP_DEBUG_PORT=Serial -DHW_VERSION_${common.hw_version}
 
 ; not needed included in ttgo-t-beam board file
 ; also to use PSRAM https://docs.platformio.org/en/latest/platforms/espressif32.html#external-ram-psram
@@ -43,8 +39,6 @@ build_flags = -Wall -Wextra -Wno-missing-field-initializers -Isrc -Isrc/rf95 -Os
 ;upload_port = /dev/ttyUSB0
 ;monitor_port = /dev/ttyUSB0
 
-upload_speed = 921600
-
 ; the default is esptool
 ; upload_protocol = esp-prog
 
@@ -62,8 +56,6 @@ debug_tool = jlink
 ;debug_init_cmds =
 ;  monitor adapter_khz 10000
 
-debug_init_break = tbreak setup
-
 lib_deps =
   https://github.com/meshtastic/LoRaLayer2.git
   https://github.com/meshtastic/esp8266-oled-ssd1306.git ; ESP8266_SSD1306 
@@ -74,6 +66,15 @@ lib_deps =
   https://github.com/meshtastic/arduino-fsm.git 
   https://github.com/meshtastic/SparkFun_Ublox_Arduino_Library.git
 
+; Common settings for ESP targes, mixin with extends = esp32_base
+[esp32_base]
+src_filter = 
+  ${env.src_filter} -<bare/>
+upload_speed = 921600
+debug_init_break = tbreak setup
+build_flags =
+  ${env.build_flags} -Wall -Wextra
+
 ; The 1.0 release of the TBEAM board
 [env:tbeam]
 extends = esp32_base
@@ -82,14 +83,14 @@ lib_deps =
   ${env.lib_deps}
   AXP202X_Library
 build_flags = 
-  ${env.build_flags} -D TBEAM_V10
+  ${esp32_base.build_flags} -D TBEAM_V10
 
 ; The original TBEAM board without the AXP power chip and a few other changes
 [env:tbeam0.7]
 extends = esp32_base
 board = ttgo-t-beam
 build_flags = 
-  ${env.build_flags} -D TBEAM_V07
+  ${esp32_base.build_flags} -D TBEAM_V07
 
 [env:heltec]
 ;build_type = debug ; to make it possible to step through our jtag debugger 
@@ -100,22 +101,28 @@ board = heltec_wifi_lora_32_V2
 extends = esp32_base
 board = ttgo-lora32-v1
 build_flags = 
-  ${env.build_flags} -D TTGO_LORA_V1
+  ${esp32_base.build_flags} -D TTGO_LORA_V1
 
 ; note: the platformio definition for lora32-v2 seems stale, it is missing a pins_arduino.h file, therefore I don't think it works
 [env:ttgo-lora32-v2]
 extends = esp32_base
 board = ttgo-lora32-v1
 build_flags = 
-  ${env.build_flags} -D TTGO_LORA_V2
+  ${esp32_base.build_flags} -D TTGO_LORA_V2
 
 
 ; This is a temporary build target to test turning off particular hardare bits in the build (to improve modularity)
 [env:bare]
-board = ttgo-lora32-v1
+platform = nordicnrf52
+board = nrf52840_dk_adafruit ; nicer than nrf52840_dk - more full gpio mappings
+framework = arduino
+debug_tool = jlink
 build_flags = 
-  ${env.build_flags} -D BARE_BOARD
+  ${env.build_flags} -D BARE_BOARD -Wno-unused-variable -Isrc/bare
 src_filter = 
   ${env.src_filter} -<esp32/>
 lib_ignore =
-  BluetoothOTA
+  BluetoothOTA
+lib_deps = 
+  ${env.lib_deps}
+monitor_port = /dev/ttyACM1