diff options
Diffstat (limited to 'src/cc20rng/stm32f4xx_hal_msp.c')
| -rw-r--r-- | src/cc20rng/stm32f4xx_hal_msp.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/cc20rng/stm32f4xx_hal_msp.c b/src/cc20rng/stm32f4xx_hal_msp.c new file mode 100644 index 0000000..536a78c --- /dev/null +++ b/src/cc20rng/stm32f4xx_hal_msp.c @@ -0,0 +1,113 @@ +#include "stm_init.h" +#include "stm32f4xx_hal.h" + +static void Error_Handler(void); +extern void HAL_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma); + +void HAL_TIM_IC_MspInit(TIM_HandleTypeDef* htim) +{ + if (htim->Instance == TIM2) { + /* Configure DMA input capturing. + * + * Amplified avalanche noise is present at pin PA1, + * which has Alternate Function TIM2_CH2. + * + * TIM2_CH2 is DMA1 stream 6, channel 3 according to Table 28 + * (DMA1 request mapping) in the reference manual (RM0368). + */ + __DMA1_CLK_ENABLE(); + __TIM2_CLK_ENABLE(); + __GPIOA_CLK_ENABLE(); + + hdma_tim.Instance = DMA1_Stream6; + + hdma_tim.Init.Channel = DMA_CHANNEL_3; + hdma_tim.Init.Direction = DMA_PERIPH_TO_MEMORY; + hdma_tim.Init.PeriphInc = DMA_PINC_DISABLE; + hdma_tim.Init.MemInc = DMA_MINC_ENABLE; + hdma_tim.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; + hdma_tim.Init.MemDataAlignment = DMA_MDATAALIGN_WORD; + hdma_tim.Init.Mode = DMA_NORMAL; + hdma_tim.Init.Priority = DMA_PRIORITY_HIGH; + hdma_tim.Init.FIFOMode = DMA_FIFOMODE_DISABLE; + hdma_tim.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL; + hdma_tim.Init.MemBurst = DMA_MBURST_SINGLE; + hdma_tim.Init.PeriphBurst = DMA_PBURST_SINGLE; + + /* Link hdma_tim to hdma[2] (channel3) */ + __HAL_LINKDMA(htim, hdma[TIM_DMA_ID_CC2], hdma_tim); + + /* Initialize TIMx DMA handle */ + if (HAL_DMA_Init(&hdma_tim) != HAL_OK) { + Error_Handler(); + } + } +} + +void HAL_UART_MspInit(UART_HandleTypeDef* huart) +{ + GPIO_InitTypeDef GPIO_InitStruct; + + if (huart->Instance == USART1) { + /* Peripheral clock enable */ + __USART1_CLK_ENABLE(); + + /**USART1 GPIO Configuration + PA9 ------> USART1_TX + PA10 ------> USART1_RX + */ + GPIO_InitStruct.Pin = GPIO_PIN_9 | GPIO_PIN_10; + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_NOPULL; + GPIO_InitStruct.Speed = GPIO_SPEED_FAST; + GPIO_InitStruct.Alternate = GPIO_AF7_USART1; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* NVIC for interrupt mode */ + HAL_NVIC_SetPriority(USART1_IRQn, 0, 1); + HAL_NVIC_EnableIRQ(USART1_IRQn); + } else if (huart->Instance == USART2) { + /* Peripheral clock enable */ + __USART2_CLK_ENABLE(); + GPIO_InitStruct.Pin = GPIO_PIN_2 | GPIO_PIN_3; + GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; + GPIO_InitStruct.Pull = GPIO_NOPULL; + GPIO_InitStruct.Speed = GPIO_SPEED_FAST; + GPIO_InitStruct.Alternate = GPIO_AF7_USART2; + HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); + + /* NVIC for interrupt mode */ + HAL_NVIC_SetPriority(USART2_IRQn, 0, 1); + HAL_NVIC_EnableIRQ(USART2_IRQn); + } +} + +void HAL_UART_MspDeInit(UART_HandleTypeDef* huart) +{ + if (huart->Instance == USART1) { + /* Peripheral clock disable */ + __USART1_CLK_DISABLE(); + + /**USART1 GPIO Configuration + PA9 ------> USART1_TX + PA10 ------> USART1_RX + */ + HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9 | GPIO_PIN_10); + } else if (huart->Instance == USART2) { + __USART2_CLK_DISABLE(); + HAL_GPIO_DeInit(GPIOA, GPIO_PIN_2 | GPIO_PIN_3); + } +} + +/** + * @brief This function is executed in case of error occurrence. + * @param None + * @retval None + */ +static void Error_Handler(void) +{ + /* Turn on RED LED and then loop indefinitely */ + HAL_GPIO_WritePin(LED_PORT, LED_RED, GPIO_PIN_SET); + + while (1) { ; } +} |