cubeIDE 에서 설정할 때 기본으로 잡혀있는 핀이 있는데
그게 아닌 다른 것을 설정하려면 alternative function 으로 지정해서 pin mux 설정이 되어야 한다.
CubeIDE 에서는 ioc 파일 열어 gui 에서 대충~ 핀 설정해주고 기능 enable 시키면 알아서 매핑되어 생성된다.
[링크 : https://m.blog.naver.com/harkjael/222315747541]
해당 alt func는
_AF_ 라는 접두를 붙여서 msp 소스에 구현된다.
else if(huart->Instance==USART1)
{
/* USER CODE BEGIN USART1_MspInit 0 */
/* USER CODE END USART1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**USART1 GPIO Configuration
PB14 ------> USART1_TX
PB15 ------> USART1_RX
*/
GPIO_InitStruct.Pin = GPIO_PIN_14|GPIO_PIN_15;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF4_USART1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN USART1_MspInit 1 */
/* USER CODE END USART1_MspInit 1 */
}
...
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF5_SPI4;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); |
stm32h7xx_hal_gpio_ex.h
#define GPIO_AF5_SPI1 ((uint8_t)0x05) /* SPI1 Alternate Function mapping */
#define GPIO_AF5_SPI2 ((uint8_t)0x05) /* SPI2 Alternate Function mapping */
#define GPIO_AF5_SPI3 ((uint8_t)0x05) /* SPI3 Alternate Function mapping */
#define GPIO_AF5_SPI4 ((uint8_t)0x05) /* SPI4 Alternate Function mapping */
#define GPIO_AF5_SPI5 ((uint8_t)0x05) /* SPI5 Alternate Function mapping */
#define GPIO_AF5_SPI6 ((uint8_t)0x05) /* SPI6 Alternate Function mapping */
#define GPIO_AF5_CEC ((uint8_t)0x05) /* CEC Alternate Function mapping */
#define GPIO_AF4_I2C1 ((uint8_t)0x04) /* I2C1 Alternate Function mapping */
#define GPIO_AF4_I2C2 ((uint8_t)0x04) /* I2C2 Alternate Function mapping */
#define GPIO_AF4_I2C3 ((uint8_t)0x04) /* I2C3 Alternate Function mapping */
#define GPIO_AF4_I2C4 ((uint8_t)0x04) /* I2C4 Alternate Function mapping */
#if defined(I2C5)
#define GPIO_AF4_I2C5 ((uint8_t)0x04) /* I2C5 Alternate Function mapping */
#endif /* I2C5*/
#define GPIO_AF4_TIM15 ((uint8_t)0x04) /* TIM15 Alternate Function mapping */
#define GPIO_AF4_CEC ((uint8_t)0x04) /* CEC Alternate Function mapping */
#define GPIO_AF4_LPTIM2 ((uint8_t)0x04) /* LPTIM2 Alternate Function mapping */
#define GPIO_AF4_USART1 ((uint8_t)0x04) /* USART1 Alternate Function mapping */
#if defined(USART10)
#define GPIO_AF4_USART10 ((uint8_t)0x04) /* USART10 Alternate Function mapping : available on STM32H72xxx/STM32H73xxx */
#endif /*USART10*/
#define GPIO_AF4_DFSDM1 ((uint8_t)0x04) /* DFSDM Alternate Function mapping */
#if defined(DFSDM2_BASE)
#define GPIO_AF4_DFSDM2 ((uint8_t)0x04) /* DFSDM2 Alternate Function mapping */
#endif /* DFSDM2_BASE */
#define GPIO_AF4_DCMI ((uint8_t)0x04) /* DCMI Alternate Function mapping : available on STM32H7A3xxx/STM32H7B3xxx/STM32H7B0xxx and STM32H72xxx/STM32H73xxx */
#if defined(PSSI)
#define GPIO_AF4_PSSI ((uint8_t)0x04) /* PSSI Alternate Function mapping */
#endif /* PSSI */
#if defined(OCTOSPIM)
#define GPIO_AF4_OCTOSPIM_P1 ((uint8_t)0x04) /* OCTOSPI Manager Port 1 Alternate Function mapping : available on STM32H72xxx/STM32H73xxx */
#endif /* OCTOSPIM */ |
stm32h7xx_hal_msp.c 에서 핀 설정이 변경되는데, 파일 이름의 msp는 mcu 지원 패키지의 약자랜다.
msp - mcu support package
[링크 : https://community.st.com/t5/stm32cubemx-mcus/hal-peripheral-msp-init-why-does-stm32cubeide-generated-code-not/td-p/219207]
