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
'embeded > Cortex-M7 STM' 카테고리의 다른 글
| STM32H757 전원 설정 (0) | 2024.09.04 |
|---|---|
| STM32 / no MCU device found (0) | 2024.09.04 |
| stm32h757i-eval 데모 펌웨어 굽기 (0) | 2024.08.07 |
| stm32cubeide 빌드할 소스 추가하기 (0) | 2024.08.01 |
| STM32H75I-EVAL (0) | 2024.08.01 |
