ejung/parafraktor-stm32
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uart config seems good for now

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dmx receiving with ftdi and qlc+ works
This commit is contained in:
Eggert Jung
2025-04-26 00:59:26 +02:00
parent 379255caf7
commit a3889faf10
2 changed files with 39 additions and 20 deletions
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2
Inc/main.h
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@@ -41,7 +41,7 @@ extern "C" {
/* Exported constants --------------------------------------------------------*/ /* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */ /* USER CODE BEGIN EC */
#define BUFFER_SIZE 8 #define BUFFER_SIZE 515
extern uint8_t rxBuffer[BUFFER_SIZE]; extern uint8_t rxBuffer[BUFFER_SIZE];
/* USER CODE END EC */ /* USER CODE END EC */

57
Src/main.c
View File

@@ -58,11 +58,11 @@ static void MX_GPIO_Init(void);
/* Private user code ---------------------------------------------------------*/ /* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */ /* USER CODE BEGIN 0 */
#define BUFFER_SIZE 8 #define BUFFER_SIZE 515
uint8_t rxBuffer[BUFFER_SIZE]; uint8_t rxBuffer[BUFFER_SIZE];
uint16_t rxBufferPos = 0;
void init_UART1(){ void init_UART1(){
USART1->CR1 &= ~USART_CR1_UE;
RCC->APBENR2 |= RCC_APBENR2_USART1EN; RCC->APBENR2 |= RCC_APBENR2_USART1EN;
RCC->IOPENR |= RCC_IOPENR_GPIOCEN; RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
@@ -72,8 +72,11 @@ void init_UART1(){
GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos; GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos;
USART1->BRR = 128; // 32000000÷250000 USART1->BRR = 128; // 32000000÷250000
USART1->CR3 |= USART_CR3_EIE;
USART1->CR1 = USART_CR1_RE; USART1->CR1 = USART_CR1_RE;
USART1->CR3 |= USART_CR3_EIE;
USART1->CR1 |= USART_CR1_RXNEIE_RXFNEIE;
USART1->CR1 |= USART_CR1_UE; USART1->CR1 |= USART_CR1_UE;
HAL_NVIC_SetPriority(USART1_IRQn, 0, 0); HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
@@ -81,6 +84,38 @@ void init_UART1(){
} }
/* USER CODE END 0 */ /* USER CODE END 0 */
void USART1_IRQHandler(){
if(USART1->ISR & USART_ISR_RXNE_RXFNE){
//printf("%x ", USART1->RDR);
rxBuffer[rxBufferPos++] = USART1->RDR;
if(rxBufferPos >= BUFFER_SIZE){
rxBufferPos = 0;
}
}
if(USART1->ISR & USART_ISR_FE){
USART1->ICR = USART_ICR_FECF;
printf("FE after %d\n",rxBufferPos);
rxBufferPos = 0;
printf("buf: ");
for(uint16_t i=0; i<10; i++)
printf("0x%02X ", rxBuffer[i]);
printf("\n");
}
if(USART1->ISR & USART_ISR_ORE){
USART1->ICR = USART_ICR_ORECF;
printf("ORE\n");
}
if(USART1->ISR & USART_ISR_NE){
USART1->ICR = USART_ICR_NECF;
printf("NE\n");
}
if(USART1->ISR & USART_ISR_UDR){
USART1->ICR = USART_ICR_UDRCF;
printf("UDR\n");
}
}
/** /**
* @brief The application entry point. * @brief The application entry point.
* @retval int * @retval int
@@ -112,20 +147,6 @@ int main(void)
MX_GPIO_Init(); MX_GPIO_Init();
/* USER CODE BEGIN 2 */ /* USER CODE BEGIN 2 */
init_UART1(); init_UART1();
printf("CR1 init: 0x%02lX\n", USART1->CR1 );
printf("CR2 init: 0x%02lX\n", USART1->CR2 );
printf("CR3 init: 0x%02lX\n", USART1->CR3 );
printf("BRR init: 0x%02lX\n", USART1->BRR );
printf("GTPR init: 0x%02lX\n", USART1->GTPR );
printf("RTOR init: 0x%02lX\n", USART1->RTOR );
printf("RQR init: 0x%02lX\n", USART1->RQR );
printf("ISR init: 0x%02lX\n", USART1->ISR );
printf("ICR init: 0x%02lX\n", USART1->ICR );
printf("RDR init: 0x%02lX\n", USART1->RDR );
printf("TDR init: 0x%02lX\n", USART1->TDR );
printf("PRESC init: 0x%02lX\n", USART1->PRESC);
/* USER CODE END 2 */ /* USER CODE END 2 */
/* Infinite loop */ /* Infinite loop */
@@ -133,8 +154,6 @@ int main(void)
//HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE); //HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
while (1) while (1)
{ {
if(USART1->ISR & USART_ISR_RXNE_RXFNE)
printf("char: '%c'\n", USART1->RDR);
/* USER CODE END WHILE */ /* USER CODE END WHILE */
/* USER CODE BEGIN 3 */ /* USER CODE BEGIN 3 */