diff options
Diffstat (limited to 'stm32f091/setup.c')
| -rw-r--r-- | stm32f091/setup.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/stm32f091/setup.c b/stm32f091/setup.c index fec2b7c..318de5a 100644 --- a/stm32f091/setup.c +++ b/stm32f091/setup.c @@ -5,6 +5,7 @@ #include <FreeRTOS.h> #include <task.h> +#include "esp8266.h" #include "setup.h" I2C_HandleTypeDef hi2c1 = { @@ -45,10 +46,33 @@ UART_HandleTypeDef huart2 = { .AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT, }; +DMA_HandleTypeDef hdma_usart1_rx = { + .Instance = DMA1_Channel1, + .Init.Direction = DMA_PERIPH_TO_MEMORY, + .Init.PeriphInc = DMA_PINC_DISABLE, + .Init.MemInc = DMA_MINC_ENABLE, + .Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE, + .Init.MemDataAlignment = DMA_MDATAALIGN_BYTE, + .Init.Mode = DMA_NORMAL, + .Init.Priority = DMA_PRIORITY_LOW, +}; + +DMA_HandleTypeDef hdma_usart1_tx { + .Instance = DMA1_Channel2, + .Init.Direction = DMA_MEMORY_TO_PERIPH, + .Init.PeriphInc = DMA_PINC_DISABLE, + .Init.MemInc = DMA_MINC_ENABLE, + .Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE, + .Init.MemDataAlignment = DMA_MDATAALIGN_BYTE, + .Init.Mode = DMA_NORMAL, + .Init.Priority = DMA_PRIORITY_LOW, +}; + static void ws_io_clock_setup(); static void ws_io_i2c_setup(); static void ws_io_usart1_setup(); static void ws_io_usart2_setup(); +static void ws_io_dma_setup(); static void ws_setup_error_handler(); void ws_io_setup() { @@ -58,6 +82,7 @@ void ws_io_setup() { ws_io_i2c_setup(); ws_io_usart1_setup(); ws_io_usart2_setup(); + ws_io_dma_setup(); } static void ws_io_clock_setup() { @@ -97,6 +122,9 @@ static void ws_io_i2c_setup() { static void ws_io_usart1_setup() { if (HAL_UART_Init(&huart1) != HAL_OK) return ws_setup_error_handler(); + + HAL_UARTEx_ReceiveToIdle_DMA(&huart1, g_ws_esp8266_dma_rx_buffer, WS_DMA_RX_BUFFER_SIZE); + __HAL_DMA_DISABLE_IT(&hdma_usart1_rx, DMA_IT_HT); } static void ws_io_usart2_setup() { @@ -104,6 +132,16 @@ static void ws_io_usart2_setup() { return ws_setup_error_handler(); } +static void ws_io_dma_setup() { + __HAL_RCC_DMA1_CLK_ENABLE(); + + // interrupt priorities + HAL_NVIC_SetPriority(DMA1_Ch1_IRQn, 3, 0); + HAL_NVIC_EnableIRQ(DMA1_Ch1_IRQn); + HAL_NVIC_SetPriority(DMA1_Ch2_3_DMA2_Ch1_2_IRQn, 3, 0); + HAL_NVIC_EnableIRQ(DMA1_Ch2_3_DMA2_Ch1_2_IRQn); +} + void HAL_MspInit() { __HAL_RCC_SYSCFG_CLK_ENABLE(); __HAL_RCC_PWR_CLK_ENABLE(); @@ -136,6 +174,14 @@ void HAL_UART_MspInit(UART_HandleTypeDef *huart) { .Alternate = GPIO_AF1_USART1, }); + // DMA setup + if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK) return ws_setup_error_handler(); + __HAL_DMA1_REMAP(HAL_DMA1_CH1_USART1_RX); + __HAL_LINKDMA(huart, hdmarx, hdma_usart1_rx); + if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK) return ws_setup_error_handler(); + __HAL_DMA1_REMAP(HAL_DMA1_CH2_USART1_TX); + __HAL_LINKDMA(huart, hdmatx, hdma_usart1_tx); + // USART1 interrupt Init HAL_NVIC_SetPriority(USART1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(USART1_IRQn); |