- Wed Jan 27, 2016 6:54 pm
#39845
I am looking for a sample reading ACD, and another sample using the SPI-bus? Neither of these examples exist on GitHub
Best regards
Thorvald
Best regards
Thorvald
- Sat Jan 30, 2016 4:44 pm
#40016
Im guessing you mean ADC rather than ACD? And no example yet (see forum reply http://www.esp8266.com/viewtopic.php?f=35&t=5987&start=5 from "hreintke" )
Its straightforward though - I use system_adc_read(), on a callback to a timer, I flash a LED so I know something is happening, and I stuff the result into a circularBuffer which I can deal with later.
I found though that if samplePeriodMs is too low and I do it too often, I get a reset. Every 5ms is OK it would seem.
Its straightforward though - I use system_adc_read(), on a callback to a timer, I flash a LED so I know something is happening, and I stuff the result into a circularBuffer which I can deal with later.
Code: Select all
void AS103::onTimerReadCurrent()
{
static uint8_t f = 0; f++; f = f % 16;
digitalWrite(LED_WHITE, f>12? HIGH: LOW);
int reading = system_adc_read();
circularBuffer.push_back(reading);
}
. . .
timer.initializeMs(samplePeriodMs, TimerDelegate(&AS103::onTimerReadCurrent, this)).start();
I found though that if samplePeriodMs is too low and I do it too often, I get a reset. Every 5ms is OK it would seem.
