diff options
Diffstat (limited to 'stm')
| -rw-r--r-- | stm/Makefile | 3 | ||||
| -rw-r--r-- | stm/system_stm32f4xx.c | 6 |
2 files changed, 5 insertions, 4 deletions
diff --git a/stm/Makefile b/stm/Makefile index 9c0fe2acf0..f228e5fe2e 100644 --- a/stm/Makefile +++ b/stm/Makefile @@ -18,6 +18,7 @@ FATFSSRC=fatfs CC3KSRC=cc3k DFU=../tools/dfu.py TARGET=PYBOARD +OSC_VALUE=8000000 AS = arm-none-eabi-as CC = arm-none-eabi-gcc @@ -25,7 +26,7 @@ LD = arm-none-eabi-ld OBJCOPY = arm-none-eabi-objcopy SIZE = arm-none-eabi-size -CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion -DSTM32F40_41xxx -DUSE_STDPERIPH_DRIVER -DHSE_VALUE=8000000 +CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion -DSTM32F40_41xxx -DUSE_STDPERIPH_DRIVER -DHSE_VALUE=$(OSC_VALUE) CFLAGS = -I. -I$(PY_SRC) -I$(FATFSSRC) -I$(CMSIS) -I$(STMSRC) -Wall -ansi -std=gnu99 $(CFLAGS_CORTEX_M4) -D$(TARGET) #CFLAGS += -I$(STMOTGSRC) -DUSE_HOST_MODE -DUSE_OTG_MODE diff --git a/stm/system_stm32f4xx.c b/stm/system_stm32f4xx.c index 8568a9b4f1..12ac4d6b56 100644 --- a/stm/system_stm32f4xx.c +++ b/stm/system_stm32f4xx.c @@ -54,9 +54,9 @@ *-----------------------------------------------------------------------------
* APB2 Prescaler | 2
*-----------------------------------------------------------------------------
- * HSE Frequency(Hz) | 8000000 changed dpgeorge
+ * HSE Frequency(Hz) | HSE_VALUE
*-----------------------------------------------------------------------------
- * PLL_M | 8 changed dpgeorge
+ * PLL_M | (HSE_VALUE/1000000)
*-----------------------------------------------------------------------------
* PLL_N | 336
*-----------------------------------------------------------------------------
@@ -251,7 +251,7 @@ /************************* PLL Parameters *************************************/
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLL_M) * PLL_N */
-#define PLL_M 8
+#define PLL_M (HSE_VALUE/1000000)
/* USB OTG FS, SDIO and RNG Clock = PLL_VCO / PLLQ */
#define PLL_Q 7
|