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| author | Daniel Friesel <daniel.friesel@uos.de> | 2020-08-12 15:33:26 +0200 |
|---|---|---|
| committer | Daniel Friesel <daniel.friesel@uos.de> | 2020-08-12 15:33:26 +0200 |
| commit | 531e1e0e57be542a63b6793611d33ca89a9ecab9 (patch) | |
| tree | ebd030c30a2572909ee1cff1d4b4ab7b15829594 | |
| parent | 7b962b22a1702f0aeaf0b5cdb794d18e441a8b0f (diff) | |
stm32f446re: configurable clock speed
| -rw-r--r-- | src/arch/stm32f446re-nucleo/Makefile.inc | 6 | ||||
| -rw-r--r-- | src/arch/stm32f446re-nucleo/arch.cc | 11 |
2 files changed, 16 insertions, 1 deletions
diff --git a/src/arch/stm32f446re-nucleo/Makefile.inc b/src/arch/stm32f446re-nucleo/Makefile.inc index 8dfaecd..31d6015 100644 --- a/src/arch/stm32f446re-nucleo/Makefile.inc +++ b/src/arch/stm32f446re-nucleo/Makefile.inc @@ -55,6 +55,12 @@ ifneq ($(findstring counter,${arch_drivers}), ) CXX_TARGETS += src/arch/stm32f446re-nucleo/driver/counter.cc endif +ifneq (${cpu_freq}, ) + COMMON_FLAGS += -DF_CPU=${cpu_freq}UL +else + COMMON_FLAGS += -DF_CPU=168000000UL +endif + OBJECTS = ${CXX_TARGETS:.cc=.o} ${C_TARGETS:.c=.o} ${ASM_TARGETS:.S=.o} diff --git a/src/arch/stm32f446re-nucleo/arch.cc b/src/arch/stm32f446re-nucleo/arch.cc index c0e2710..99e3e5f 100644 --- a/src/arch/stm32f446re-nucleo/arch.cc +++ b/src/arch/stm32f446re-nucleo/arch.cc @@ -10,8 +10,17 @@ void Arch::setup(void) { - // NUCLEO-F443RE uses 8MHz STLINK clock as input + // NUCLEO-F443RE uses 8MHz STLINK clock (MCO from STLINK MCU) as input + // (it is connected to OSC_IN -> HSE OSC) +#if F_CPU == 180000000UL + rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_180MHZ]); +#elif F_CPU == 168000000UL rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]); +#elif F_CPU == 84000000UL + rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_84MHZ]); +#else +#error Unsupported F_CPU +#endif // counter rcc_periph_clock_enable(RCC_TIM2); |