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[STM32][SPI]优化APBx时钟配置代码 (#6698) 

* [STM32][SPI]优化APBx时钟配置代码
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liYangYang 2022-12-07 01:52:37 +08:00 committed by GitHub
parent db3e261bc4
commit e3a09b2791
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1 changed files with 4 additions and 31 deletions
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35
bsp/stm32/libraries/HAL_Drivers/drv_spi.c
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@ -142,41 +142,14 @@ static rt_err_t stm32_spi_init(struct stm32_spi *spi_drv, struct rt_spi_configur
uint32_t SPI_APB_CLOCK;
/* special series */
#if defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0)
/* Some series may only have APBPERIPH_BASE, but don't have HAL_RCC_GetPCLK2Freq */
#if defined(APBPERIPH_BASE)
SPI_APB_CLOCK = HAL_RCC_GetPCLK1Freq();
/* normal series */
#else
/* SPI1, SPI4 and SPI5 on APB2 */
if(spi_drv->config->Instance == SPI1
#ifdef SPI4
|| spi_drv->config->Instance == SPI4
#endif
#ifdef SPI5
|| spi_drv->config->Instance == SPI5
#endif
)
#elif defined(APB1PERIPH_BASE) || defined(APB2PERIPH_BASE)
if ((rt_uint32_t)spi_drv->config->Instance >= APB2PERIPH_BASE)
{
SPI_APB_CLOCK = HAL_RCC_GetPCLK2Freq();
}
/* SPI2 and SPI3 on APB1 */
#ifdef SPI2
else if(spi_drv->config->Instance == SPI2
#ifdef SPI3
|| spi_drv->config->Instance == SPI3
#endif
)
{
SPI_APB_CLOCK = HAL_RCC_GetPCLK1Freq();
}
#endif
/* SPI6 get the input clk from APB4(such as on STM32H7). However, there is no HAL_RCC_GetPCLK4Freq api provided.
APB4 has same prescale factor as APB1 from HPRE Clock by default in CubeMx, so we assign APB1 to it.
if you change the default prescale factor of APB4, please modify SPI_APB_CLOCK accordingly.
*/
else
{
SPI_APB_CLOCK = HAL_RCC_GetPCLK1Freq();