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Stop using uint8_t to determine if bytes are available from USB. If we buffer more than that we'll never be able to read it all.

This commit is contained in:
Scott Shawcroft 2016-06-25 10:48:24 -07:00
parent fefd34d05a
commit a4e5e30152
4 changed files with 11 additions and 11 deletions
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2
src/main/drivers/serial.h
View File

@ -62,7 +62,7 @@ typedef struct serialPort_s {
struct serialPortVTable {
void (*serialWrite)(serialPort_t *instance, uint8_t ch);
uint8_t (*serialTotalRxWaiting)(serialPort_t *instance);
uint32_t (*serialTotalRxWaiting)(serialPort_t *instance);
uint8_t (*serialTotalTxFree)(serialPort_t *instance);
uint8_t (*serialRead)(serialPort_t *instance);

8
src/main/drivers/serial_uart.c
View File

@ -165,7 +165,7 @@ serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback,
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
#endif
DMA_InitStructure.DMA_BufferSize = s->port.rxBufferSize;
#ifdef STM32F4
DMA_InitStructure.DMA_Channel = s->rxDMAChannel;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
@ -176,7 +176,7 @@ serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback,
DMA_Cmd(s->rxDMAStream, ENABLE);
USART_DMACmd(s->USARTx, USART_DMAReq_Rx, ENABLE);
s->rxDMAPos = DMA_GetCurrDataCounter(s->rxDMAStream);
#else
#else
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)s->port.rxBuffer;
@ -228,7 +228,7 @@ serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback,
DMA_Init(s->txDMAStream, &DMA_InitStructure);
DMA_ITConfig(s->txDMAStream, DMA_IT_TC | DMA_IT_FE | DMA_IT_TE | DMA_IT_DME, ENABLE);
DMA_SetCurrDataCounter(s->txDMAStream, 0);
#else
#else
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
DMA_DeInit(s->txDMAChannel);
@ -292,7 +292,7 @@ void uartStartTxDMA(uartPort_t *s)
#endif
}
uint8_t uartTotalRxBytesWaiting(serialPort_t *instance)
uint32_t uartTotalRxBytesWaiting(serialPort_t *instance)
{
uartPort_t *s = (uartPort_t*)instance;
#ifdef STM32F4

4
src/main/drivers/serial_uart.h
View File

@ -38,7 +38,7 @@
typedef struct {
serialPort_t port;
#ifdef STM32F4
DMA_Stream_TypeDef *rxDMAStream;
DMA_Stream_TypeDef *txDMAStream;
@ -65,7 +65,7 @@ serialPort_t *uartOpen(USART_TypeDef *USARTx, serialReceiveCallbackPtr callback,
// serialPort API
void uartWrite(serialPort_t *instance, uint8_t ch);
uint8_t uartTotalRxBytesWaiting(serialPort_t *instance);
uint32_t uartTotalRxBytesWaiting(serialPort_t *instance);
uint8_t uartTotalTxBytesFree(serialPort_t *instance);
uint8_t uartRead(serialPort_t *instance);
void uartSetBaudRate(serialPort_t *s, uint32_t baudRate);

8
src/main/drivers/serial_usb_vcp.c
View File

@ -66,11 +66,11 @@ static bool isUsbVcpTransmitBufferEmpty(serialPort_t *instance)
return true;
}
static uint8_t usbVcpAvailable(serialPort_t *instance)
static uint32_t usbVcpAvailable(serialPort_t *instance)
{
UNUSED(instance);
return receiveLength & 0xFF; // FIXME use uint32_t return type everywhere
return receiveLength;
}
static uint8_t usbVcpRead(serialPort_t *instance)
@ -120,7 +120,7 @@ static bool usbVcpFlush(vcpPort_t *port)
if (!usbIsConnected() || !usbIsConfigured()) {
return false;
}
uint32_t txed;
uint32_t start = millis();
@ -147,7 +147,7 @@ static void usbVcpBeginWrite(serialPort_t *instance)
port->buffering = true;
}
uint8_t usbTxBytesFree()
uint8_t usbTxBytesFree()
{
// Because we block upon transmit and don't buffer bytes, our "buffer" capacity is effectively unlimited.
return 255;