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This commit is contained in:
Tristan Krause 2019-04-02 08:46:42 +02:00
parent 84fe8b72eb
commit 86da74bed0
6 changed files with 45 additions and 18 deletions
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26
driver/drv/usart.cpp
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@ -25,8 +25,8 @@ void USART::openDevice(std::string device)
if(code)
throw USARTException("Fehler beim Setzen der Geräteparameter");
flushOutputBuffer();
flushInputBuffer();
clearOutputBuffer();
clearInputBuffer();
}
void USART::closeDevice()
@ -36,20 +36,27 @@ void USART::closeDevice()
throw USARTException("Fehler beim Schließen des Gerätes");
}
void USART::flushInputBuffer()
void USART::clearInputBuffer()
{
int code = tcflush(file_desc, TCIFLUSH);
if(code)
throw USARTException("Fehler beim Leeren des Eingangspuffers");
}
void USART::flushOutputBuffer()
void USART::clearOutputBuffer()
{
int code = tcflush(file_desc, TCOFLUSH);
if(code)
throw USARTException("Fehler beim Leeren des Ausgangspuffers");
}
void USART::printStatistics()
{
double pz = 1e2 * n_blocks_failed / n_blocks_total;
pz = std::round(pz * 1e2) / 1e2;
std::cout << "blocks total: " << n_blocks_total << " ok: " << (n_blocks_total - n_blocks_failed) << " failed: " << n_blocks_failed << " (" << pz << "%)" << std::endl;
}
void USART::writeByte(uint8_t b)
{
int sent = write(file_desc, &b, 1);
@ -118,6 +125,9 @@ void USART::writeBlock(uint8_t* buffer, uint16_t offset, uint8_t len)
const uint16_t us_per_bit = (1000000 / baudrate) * 16;
const uint16_t n_total = len + 3;
n_blocks_total++;
bool failed = false;
do
{
// calc crc
@ -163,10 +173,14 @@ void USART::writeBlock(uint8_t* buffer, uint16_t offset, uint8_t len)
if(n_read != 1)
throw std::runtime_error("fatal: " + std::to_string(n_read));
//flushInputBuffer();
//clearInputBuffer();
if(aw != 0xFF)
if(aw != 0xFF) {
if(!failed)
n_blocks_failed++;
failed = true;
std::cout << "block failed, retry" << std::endl;
}
}
while(aw != 0xFF);