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uart flush function

This commit is contained in:
Jakob.Meier 2021-07-23 18:06:36 +02:00
parent a7a4e0f219
commit b83259592a
2 changed files with 60 additions and 0 deletions
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45
hal/src/fsfw/hal/linux/uart/UartComIF.cpp
View File

@ -443,6 +443,51 @@ ReturnValue_t UartComIF::readReceivedMessage(CookieIF *cookie,
return RETURN_OK;
}
ReturnValue_t UartComIF::flushUartRxBuffer(CookieIF *cookie) {
std::string deviceFile;
UartDeviceMapIter uartDeviceMapIter;
UartCookie* uartCookie = dynamic_cast<UartCookie*>(cookie);
if(uartCookie == nullptr) {
sif::warning << "UartComIF::flushUartRxBuffer: Invalid uart cookie!" << std::endl;
return NULLPOINTER;
}
deviceFile = uartCookie->getDeviceFile();
uartDeviceMapIter = uartDeviceMap.find(deviceFile);
int fd = uartDeviceMapIter->second.fileDescriptor;
tcflush(fd, TCIFLUSH);
return RETURN_OK;
}
ReturnValue_t UartComIF::flushUartTxBuffer(CookieIF *cookie) {
std::string deviceFile;
UartDeviceMapIter uartDeviceMapIter;
UartCookie* uartCookie = dynamic_cast<UartCookie*>(cookie);
if(uartCookie == nullptr) {
sif::warning << "UartComIF::flushUartTxBuffer: Invalid uart cookie!" << std::endl;
return NULLPOINTER;
}
deviceFile = uartCookie->getDeviceFile();
uartDeviceMapIter = uartDeviceMap.find(deviceFile);
int fd = uartDeviceMapIter->second.fileDescriptor;
tcflush(fd, TCOFLUSH);
return RETURN_OK;
}
ReturnValue_t UartComIF::flushUartTxAndRxBuf(CookieIF *cookie) {
std::string deviceFile;
UartDeviceMapIter uartDeviceMapIter;
UartCookie* uartCookie = dynamic_cast<UartCookie*>(cookie);
if(uartCookie == nullptr) {
sif::warning << "UartComIF::flushUartTxAndRxBuf: Invalid uart cookie!" << std::endl;
return NULLPOINTER;
}
deviceFile = uartCookie->getDeviceFile();
uartDeviceMapIter = uartDeviceMap.find(deviceFile);
int fd = uartDeviceMapIter->second.fileDescriptor;
tcflush(fd, TCIOFLUSH);
return RETURN_OK;
}
void UartComIF::setUartMode(struct termios *options, UartCookie &uartCookie) {
UartModes uartMode = uartCookie.getUartMode();
if(uartMode == UartModes::NON_CANONICAL) {

15
hal/src/fsfw/hal/linux/uart/UartComIF.h
View File

@ -41,6 +41,21 @@ public:
ReturnValue_t readReceivedMessage(CookieIF *cookie, uint8_t **buffer,
size_t *size) override;
/**
* @brief This function discards all data received but not read in the UART buffer.
*/
ReturnValue_t flushUartRxBuffer(CookieIF *cookie);
/**
* @brief This function discards all data in the transmit buffer of the UART driver.
*/
ReturnValue_t flushUartTxBuffer(CookieIF *cookie);
/**
* @brief This function discards both data in the transmit and receive buffer of the UART.
*/
ReturnValue_t flushUartTxAndRxBuf(CookieIF *cookie);
private:
using UartDeviceFile_t = std::string;