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This commit is contained in:
Tristan Krause 2019-05-29 11:07:42 +02:00
parent 63d81c6e7e
commit 0ec3988c58
4 changed files with 70 additions and 76 deletions
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41
control/src/drv/usart.cpp
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@ -85,43 +85,18 @@ void USART::writeU32(uint32_t w)
throw USARTException("Fehler beim Senden: writeU32()");
}
int USART::transmit(uint8_t *buffer, uint16_t offset, uint8_t len)
void USART::receive(uint8_t *buffer, uint16_t offset, uint8_t len)
{
uint32_t elapsed = 0;
int n_read = -1;
auto start = std::chrono::steady_clock::now();
auto end = start;
while(elapsed < timeout)
{
n_read = read(file_desc, buffer + offset, len);
if (n_read == len)
return n_read;
end = std::chrono::steady_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::microseconds>(end - start).count();
}
return 0;
int n = read(file_desc, buffer + offset, len);
if(n != len)
throw USARTException(std::string(__FUNCTION__) + " failed: " + std::string(__FILE__) + "#" + std::to_string(__LINE__));
}
int USART::receive(uint8_t *buffer, uint16_t offset, uint8_t len)
void USART::transmit(uint8_t *buffer, uint16_t offset, uint8_t len)
{
uint32_t elapsed = 0;
int n_sent = -1;
auto start = std::chrono::steady_clock::now();
auto end = start;
while(elapsed < timeout)
{
n_sent = write(file_desc, buffer + offset, len);
flushOutputBuffer();
if (n_sent == len)
return n_sent;
end = std::chrono::steady_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::microseconds>(end - start).count();
}
return n_sent;
int n = write(file_desc, buffer + offset, len);
if(n != len)
throw USARTException(std::string(__FUNCTION__) + " failed: " + std::string(__FILE__) + "#" + std::to_string(__LINE__));
}
uint8_t USART::readByte(void)
{