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Software serial implementation. Compile with SOFTSERIAL_19200_LOOPBACK to test. Without the define the implementation will have no effect. Next step is to add a 'feature' to enable softserial and settings for the baud rate. Note, only READ is currently supported, write will come later. The highlevel api calls are used in main.c. Uart implementation needs cleanup to make serial port code generic, see uart files for details.

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git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@390 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61
This commit is contained in:
timecop@gmail.com 2013-08-28 01:26:10 +00:00
parent fa7eecac18
commit 77a241bd5f
13 changed files with 466 additions and 162 deletions
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61
src/drv_uart.h
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@ -12,33 +12,40 @@
typedef enum portmode_t {
MODE_RX = 1,
MODE_TX = 2,
MODE_RXTX = 3
} portmode_t;
typedef struct {
uint32_t baudRate;
uint32_t rxBufferSize;
uint32_t txBufferSize;
volatile uint8_t *rxBuffer;
volatile uint8_t *txBuffer;
uint32_t rxDMAPos;
uint32_t rxBufferHead;
uint32_t rxBufferTail;
uint32_t txBufferHead;
uint32_t txBufferTail;
DMA_Channel_TypeDef *rxDMAChannel;
DMA_Channel_TypeDef *txDMAChannel;
uint32_t rxDMAIrq;
uint32_t txDMAIrq;
bool txDMAEmpty;
USART_TypeDef *USARTx;
uartReceiveCallbackPtr callback;
portmode_t mode;
} serialPort_t;
serialPort_t *uartOpen(USART_TypeDef *USARTx, uartReceiveCallbackPtr callback, uint32_t baudRate, portmode_t mode);
MODE_RXTX = 3
} portmode_t;
// FIXME this is a uart_t really. Move the generic properties into a separate structure (serialPort_t) and update the code to use it
typedef struct {
portmode_t mode;
uint32_t baudRate;
uint32_t rxBufferSize;
uint32_t txBufferSize;
volatile uint8_t *rxBuffer;
volatile uint8_t *txBuffer;
uint32_t rxBufferHead;
uint32_t rxBufferTail;
uint32_t txBufferHead;
uint32_t txBufferTail;
// FIXME rename callback type so something more generic
uartReceiveCallbackPtr callback;
// FIXME these are uart specific and do not belong in here
DMA_Channel_TypeDef *rxDMAChannel;
DMA_Channel_TypeDef *txDMAChannel;
uint32_t rxDMAIrq;
uint32_t txDMAIrq;
uint32_t rxDMAPos;
bool txDMAEmpty;
USART_TypeDef *USARTx;
} serialPort_t;
serialPort_t *uartOpen(USART_TypeDef *USARTx, uartReceiveCallbackPtr callback, uint32_t baudRate, portmode_t mode);
void uartChangeBaud(serialPort_t *s, uint32_t baudRate);
bool isUartAvailable(serialPort_t *s);
bool isUartTransmitEmpty(serialPort_t *s);