Merge pull request #110 from erichelgeson/eric/APM32F103C8-support

Add support for the APM32F103C8T6 chip, a clone of the STM32F103

platformio.ini

@@ -29,6 +29,14 @@ board = genericSTM32F103C8
 board_build.mcu = stm32f103c8t6
 board_build.core = maple
 
+[env:APM32F103C8]
+# The APM32F1's default clock is 96MHz and runs unstable at 72MHz(STM32F1's default)
+extends = env:STM32F103C8
+# Explicilty define the multiplier as maple only handles a few cases.
+build_flags = ${env.build_flags} -DBOARD_RCC_PLLMUL=RCC_PLLMUL_12 #96000000L
+# Or go all out at 128Mhz, your call :)
+#board_build.f_cpu = 128000000L
+
 [env:STM32F103C8-XCVR]
 extends = env:STM32F103C8
 build_flags = ${env.build_flags} -DXCVR