uart.c File Reference

#include "uart.h"
#include "../lib/utils.h"
#include "../communication.h"

Macros
#define	UART_RX_DMA   DMA1_Stream5
#define	UART_RX_DMA_CHANNEL   DMA_Channel_4
#define	UART_TX_DMA   DMA1_Stream6
#define	UART_TX_DMA_CHANNEL   DMA_Channel_4
#define	UART_TX_BUFFER_SIZE   4096
#define	UART_RX_BUFFER_SIZE   512
#define	UART_USER_RX_QUEUE_SIZE   512
#define	UART_DMA_TX_IS_BUSY   (DMA_GetCmdStatus(UART_TX_DMA) == ENABLE && DMA_GetCurrDataCounter(UART_TX_DMA) > 0)

Functions
void	uart_Init (void)
	Initializes the UART module. More...
void	uart_Step (void)
	Copies the received bytes into the user-accessible queue. Reads all the available bytes in the DMA RX buffer, and copies them to the user-accessible queue. More...
cb_CircularBuffer *	uart_GetRxQueue (void)
	Gets the user-accessible queue of the received bytes. More...
void	uart_StartDma (void)
	Starts the DMA transfer to send bytes to UART peripheral. More...
void	uart_SendByteAsync (uint8_t data)
	Asynchronously sends the given byte through the UART bus. More...
void	uart_SendBytesAsync (uint8_t *data, int length)
	Asynchronously sends the given bytes through the UART bus. More...
void	uart_FlushTx (void)
	Start the DMA to send the bytes waiting in the intermediate buffer. More...

Variables
uint8_t	uart_txBuffer [2][UART_TX_BUFFER_SIZE]
uint8_t	uart_currentTxBufferToWriteTo
uint16_t	uart_txBufferIndex
uint16_t	uart_nBytesToTransferDma
uint8_t	uart_rxBuffer [UART_RX_BUFFER_SIZE]
uint8_t const *	uart_rxBuffTail
uint8_t	uart_userRxQueue [UART_USER_RX_QUEUE_SIZE]
cb_CircularBuffer	uart_rxQueue

Macro Definition Documentation

UART_DMA_TX_IS_BUSY

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

UART_RX_BUFFER_SIZE

#define UART_RX_BUFFER_SIZE   512

UART_RX_DMA

#define UART_RX_DMA   DMA1_Stream5

UART_RX_DMA_CHANNEL

#define UART_RX_DMA_CHANNEL   DMA_Channel_4

UART_TX_BUFFER_SIZE

#define UART_TX_BUFFER_SIZE   4096

UART_TX_DMA

#define UART_TX_DMA   DMA1_Stream6

UART_TX_DMA_CHANNEL

#define UART_TX_DMA_CHANNEL   DMA_Channel_4

UART_USER_RX_QUEUE_SIZE

#define UART_USER_RX_QUEUE_SIZE   512

Function Documentation

uart_StartDma()

void uart_StartDma

(

void

)

Starts the DMA transfer to send bytes to UART peripheral.

Variable Documentation

uart_currentTxBufferToWriteTo

uint8_t uart_currentTxBufferToWriteTo

uart_nBytesToTransferDma

uint16_t uart_nBytesToTransferDma

uart_rxBuffer

uint8_t uart_rxBuffer[UART_RX_BUFFER_SIZE]

uart_rxBuffTail

uint8_t const* uart_rxBuffTail

uart_rxQueue

cb_CircularBuffer uart_rxQueue

uart_txBuffer

uint8_t uart_txBuffer[2][UART_TX_BUFFER_SIZE]

uart_txBufferIndex

uint16_t uart_txBufferIndex

uart_userRxQueue

uint8_t uart_userRxQueue[UART_USER_RX_QUEUE_SIZE]