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Location: windsonde/Source/system/uart.c
c52174ca9326
3.7 KiB
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Add safety check to afsk transmit start
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// uart: configure and initialize GPS uart
//
#include "stm32f0xx_hal.h"
#include "system/uart.h"
#include "config.h"
#include "system/gpio.h"
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;
uint8_t uart_initted = 0;
void uart_init(void)
{
__GPIOB_CLK_ENABLE();
__USART1_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct;
// Init gpio pins for uart
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL; //GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
GPIO_InitStruct.Alternate = GPIO_AF1_USART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
// Init UART periph
huart1.Instance = USART1;
huart1.Init.BaudRate = 9600;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX_RX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
//huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_RXOVERRUNDISABLE_INIT|UART_ADVFEATURE_DMADISABLEONERROR_INIT;
huart1.AdvancedInit.OverrunDisable = UART_ADVFEATURE_OVERRUN_DISABLE;
huart1.AdvancedInit.DMADisableonRxError = UART_ADVFEATURE_DMA_DISABLEONRXERROR;
HAL_UART_Init(&huart1);
HAL_Delay(100);
uint8_t switch_baud[] = "$PUBX,41,1,0003,0001,115200,0*1E\r\n";
HAL_UART_Transmit(uart_gethandle(), switch_baud, sizeof(switch_baud)/sizeof(uint8_t), 1000);
HAL_UART_DeInit(&huart1);
huart1.Init.BaudRate = 115200;
HAL_UART_Init(&huart1);
//
// __DMA1_CLK_ENABLE();
//
// // Init UART DMA
// hdma_usart1_rx.Instance = DMA1_Channel3;
// hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
// hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
// hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
// hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
// hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
// hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
// hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
// HAL_DMA_Init(&hdma_usart1_rx);
//
// __HAL_LINKDMA(&huart1,hdmarx,hdma_usart1_rx);
//
// hdma_usart1_tx.Instance = DMA1_Channel2;
// hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
// hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
// hdma_usart1_tx.Init.MemInc = DMA_MINC_DISABLE;
// hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
// hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
// hdma_usart1_tx.Init.Mode = DMA_NORMAL;
// hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;
// HAL_DMA_Init(&hdma_usart1_tx);
//
// __HAL_LINKDMA(&huart1,hdmatx,hdma_usart1_tx);
//
//// HAL_NVIC_SetPriority(DMA1_Channel2_3_IRQn, 0, 0);
//// HAL_NVIC_EnableIRQ(DMA1_Channel2_3_IRQn);
HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
//HAL_NVIC_EnableIRQ(USART1_IRQn);
HAL_NVIC_DisableIRQ(USART1_IRQn);
uart_initted = 1;
}
void uart_deinit(void)
{
if(uart_initted == 1)
{
//HAL_DMA_DeInit(&hdma_usart1_rx);
//HAL_DMA_DeInit(&hdma_usart1_tx);
HAL_UART_DeInit(&huart1);
__HAL_RCC_USART1_CLK_DISABLE();
uart_initted = 0;
}
}
UART_HandleTypeDef* uart_gethandle(void)
{
return &huart1;
}
DMA_HandleTypeDef* uart_get_txdma_handle(void)
{
return &hdma_usart1_tx;
}
DMA_HandleTypeDef* uart_get_rxdma_handle(void)
{
return &hdma_usart1_rx;
}
// vim:softtabstop=4 shiftwidth=4 expandtab
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