我正在试图找出在我的ISR中处理数据的最佳设计实践 . 我知道我希望我的ISR快速，所以在我的ISR期间将数据发送到UART是否可以？我做得太多了吗？
static void ParseRxData(const uint8_t rx_byte)
{
// Only Allow ASCII Characters to be loaded into buffer
// This will drop CR/LF etc, won't go in gRxBuffer
if (rx_byte >= 0x20)
gRxBuffer[gWrIndex++] = tolower(rx_byte); // stuff lowercase only into buffer
if (rx_byte == 0x08) /* backspace */
{
UartSendChar(rx_byte);
gWrIndex--; /* backup index to ignore previous character */
UartSendChar(0x20); // space to clear old data
}
UartSendChar(rx_byte);
if (gWrIndex == BUFFER_SIZE)
{
gWrIndex = 0;
}
if (rx_byte == 0x0A) // End of Command
{
gRxBuffer[gWrIndex] = 0; // Add null pointer to end
gFlagCmdReady = true; // Set Global Flag Ready Command
gWrIndex = 0;
}
}
//******************************************************************************
//
//This is the USCI_A1 interrupt vector service routine.
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=USCI_A1_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(USCI_A1_VECTOR)))
#endif
void EUSCI_A1_ISR(void)
{
uint8_t RXData;
switch(__even_in_range(UCA1IV,USCI_UART_UCTXCPTIFG))
{
case USCI_NONE: break;
case USCI_UART_UCRXIFG:
RXData = EUSCI_A_UART_receiveData(EUSCI_A1_BASE);
ParseRxData(RXData);
break;
case USCI_UART_UCTXIFG: break;
case USCI_UART_UCSTTIFG: break;
case USCI_UART_UCTXCPTIFG: break;
}
}