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Function added to detect baudrate (#4978)

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* Function added to detect baudrate

* Added uart_start_detect_baudrate, detectBaudrate() wrappers for HardwareSerial and an example usage SerialDetectBaudrate.ino

* Some layout changes to pass Travis tests

* Some more nitty-gritty layout changes to pass Travis tests

* Some even more nitty-gritty layout changes to pass Travis tests

* renamed one function to testBaudrate() and updated doc/reference.rst

* Minor updates to doc/reference.rst

* New lines added
This commit is contained in:
Jeroen88
2018-08-01 21:33:25 +02:00
committed by Develo
parent 3ab38d690d
commit e4d9c279ef
6 changed files with 125 additions and 0 deletions
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24
cores/esp8266/HardwareSerial.cpp
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@ -108,6 +108,30 @@ void HardwareSerial::flush()
delayMicroseconds(11000000 / uart_get_baudrate(_uart) + 1);
}
void HardwareSerial::startDetectBaudrate()
{
uart_start_detect_baudrate(_uart_nr);
}
unsigned long HardwareSerial::testBaudrate()
{
return uart_detect_baudrate(_uart_nr);
}
unsigned long HardwareSerial::detectBaudrate(time_t timeoutMillis)
{
time_t startMillis = millis();
unsigned long detectedBaudrate;
while ((time_t) millis() - startMillis < timeoutMillis) {
if ((detectedBaudrate = testBaudrate())) {
break;
}
yield();
delay(100);
}
return detectedBaudrate;
}
#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SERIAL)
HardwareSerial Serial(UART0);
#endif