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cpu/stm32_common: added periph_apb_clk() function

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This commit is contained in:
Hauke Petersen 2016-12-07 15:32:46 +01:00
parent ccb9179c23
commit 7979c3ac5c
2 changed files with 31 additions and 0 deletions
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11
cpu/stm32_common/cpu_common.c
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@ -18,8 +18,19 @@
* @}
*/
#include "periph_conf.h"
#include "periph_cpu_common.h"
uint32_t periph_apb_clk(uint8_t bus)
{
if (bus == APB1) {
return CLOCK_APB1;
}
else {
return CLOCK_APB2;
}
}
void periph_clk_en(uint8_t bus, uint32_t mask)
{
if (bus == APB1) {

20
cpu/stm32_common/include/periph_cpu_common.h
View File

@ -65,6 +65,26 @@ typedef uint32_t gpio_t;
*/
#define GPIO_PIN(x, y) ((GPIOA_BASE + (x << 10)) | y)
/**
* @brief Timer configuration
*/
typedef struct {
TIM_TypeDef *dev; /**< timer device */
uint32_t max; /**< maximum value to count to (16/32 bit) */
uint32_t rcc_mask; /**< corresponding bit in the RCC register */
uint8_t bus; /**< APBx bus the timer is clock from */
uint8_t irqn; /**< global IRQ channel */
} timer_conf_t;
/**
* @brief Get the actual bus clock frequency for the APB buses
*
* @param[in] bus target APBx bus
*
* @return bus clock frequency in Hz
*/
uint32_t periph_apb_clk(uint8_t bus);
/**
* @brief Enable the given peripheral clock
*