36 lines
916 B
C
36 lines
916 B
C
#include <libopencm3/stm32/rcc.h>
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#include "clock.h"
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#include "libopencm3/stm32/f0/rcc.h"
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void init_clock(void)
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{
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/* Set STM32 to 48 MHz. */
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rcc_clock_setup_in_hse_8mhz_out_48mhz(); // generate 48 MHz from external 8 MHz crystal
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//rcc_clock_setup_in_hsi_out_48mhz(); // generate ~48 MHz from internal RC oscillator
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// enable TIM1 for PWM generation
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rcc_periph_clock_enable(RCC_TIM1);
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// enable GPIO clocks:
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// Port A is needed for the charge pump, extension port and analog input
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rcc_periph_clock_enable(RCC_GPIOA);
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// Port B is needed for the LEDs
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rcc_periph_clock_enable(RCC_GPIOB);
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// USART1 is used for RS485
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rcc_periph_clock_enable(RCC_USART1);
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// ADC1 for analog measuremnts
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rcc_periph_clock_enable(RCC_ADC1);
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// DMA1 is used for ADC data transfer
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rcc_periph_clock_enable(RCC_DMA1);
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// I2C1 is used for communication with the BMP280
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rcc_periph_clock_enable(RCC_I2C1);
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}
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