#include "ext_uart.h"
#include "../lib/utils.h"

Macros
#define	EXUART_RX_Pin GPIO_Pin_7

#define	EXUART_RX_PinSource GPIO_PinSource7

#define	EXUART_RX_Port GPIOB

#define	EXUART_TX_Pin GPIO_Pin_6

#define	EXUART_TX_PinSource GPIO_PinSource6

#define	EXUART_TX_Port GPIOB

#define	EXUART_PERIPH USART1

#define	RX_DMA DMA2_Stream2

#define	RX_DMA_CHANNEL DMA_Channel_4

#define	TX_DMA DMA2_Stream7

#define	TX_DMA_CHANNEL DMA_Channel_4

#define	TX_BUFFER_SIZE 512

#define	RX_BUFFER_SIZE 1024

#define	USER_RX_QUEUE_SIZE 2048

#define	UART_DMA_TX_IS_BUSY (DMA_GetCmdStatus(TX_DMA) == ENABLE && DMA_GetCurrDataCounter(TX_DMA) > 0)

Functions
void	exuart_FlushTx (void)
	Start the DMA to send the bytes waiting in the intermediate buffer. More...

void	exuart_Init (uint32_t baudRate)
	Initializes the UART module. More...

uint16_t	exuart_ReceivedBytesCount (void)
	Gets the number of bytes received and ready to read. More...

uint8_t	exuart_GetByte (void)
	Gets the next received byte. More...

void	exuart_StartDma (void)
	Starts the DMA transfer to send bytes to UART peripheral. More...

void	exuart_SendByteAsync (uint8_t data)
	Asynchronously sends the given byte through the UART bus. More...

void	exuart_SendBytesAsync (uint8_t *data, int length)
	Asynchronously sends the given bytes through the UART bus. More...

Variables
uint8_t	exuart_txBuffer [2][TX_BUFFER_SIZE]

uint8_t	exuart_currentTxBufferToWriteTo

uint16_t	exuart_txBufferIndex

uint16_t	exuart_nBytesToTransferDma

uint8_t	exuart_rxBuffer [RX_BUFFER_SIZE]

uint8_t const *	exuart_rxBuffTail

uint8_t	exuart_userRxQueue [USER_RX_QUEUE_SIZE]

cb_CircularBuffer	exuart_rxQueue

Macro Definition Documentation

◆ EXUART_PERIPH

#define EXUART_PERIPH USART1

◆ EXUART_RX_Pin

#define EXUART_RX_Pin GPIO_Pin_7

◆ EXUART_RX_PinSource

#define EXUART_RX_PinSource GPIO_PinSource7

◆ EXUART_RX_Port

#define EXUART_RX_Port GPIOB

◆ EXUART_TX_Pin

#define EXUART_TX_Pin GPIO_Pin_6

◆ EXUART_TX_PinSource

#define EXUART_TX_PinSource GPIO_PinSource6

◆ EXUART_TX_Port

#define EXUART_TX_Port GPIOB

◆ RX_BUFFER_SIZE

#define RX_BUFFER_SIZE 1024

◆ RX_DMA

#define RX_DMA DMA2_Stream2

◆ RX_DMA_CHANNEL

#define RX_DMA_CHANNEL DMA_Channel_4

◆ TX_BUFFER_SIZE

#define TX_BUFFER_SIZE 512

◆ TX_DMA

#define TX_DMA DMA2_Stream7

◆ TX_DMA_CHANNEL

#define TX_DMA_CHANNEL DMA_Channel_4

◆ UART_DMA_TX_IS_BUSY

#define UART_DMA_TX_IS_BUSY (DMA_GetCmdStatus(TX_DMA) == ENABLE && DMA_GetCurrDataCounter(TX_DMA) > 0)

◆ USER_RX_QUEUE_SIZE

#define USER_RX_QUEUE_SIZE 2048

Function Documentation

◆ exuart_FlushTx()

void exuart_FlushTx ( void )

Start the DMA to send the bytes waiting in the intermediate buffer.

◆ exuart_StartDma()

void exuart_StartDma ( void )

Starts the DMA transfer to send bytes to UART peripheral.

Variable Documentation

◆ exuart_currentTxBufferToWriteTo

uint8_t exuart_currentTxBufferToWriteTo

◆ exuart_nBytesToTransferDma

uint16_t exuart_nBytesToTransferDma

◆ exuart_rxBuffer

uint8_t exuart_rxBuffer[RX_BUFFER_SIZE]

◆ exuart_rxBuffTail

uint8_t const* exuart_rxBuffTail

◆ exuart_rxQueue

cb_CircularBuffer exuart_rxQueue

◆ exuart_txBuffer

uint8_t exuart_txBuffer[2][TX_BUFFER_SIZE]

◆ exuart_txBufferIndex

uint16_t exuart_txBufferIndex

◆ exuart_userRxQueue

uint8_t exuart_userRxQueue[USER_RX_QUEUE_SIZE]

Macros

Functions

Variables