ATtiny841 PWM works with 1.5.2 but not with 2.0.0
bjfischb opened this issue · 1 comments
bjfischb commented
PWM for ATtiny841 works with 1.5.2 but not with 2.0.0
Here's the code I'm running. Selecting the digitalWrite version works for both cores; the analogWrite version
works for 1.5.2 but not 2.0.0
#define PIN_LED_INDICATOR PIN_PB2
#define FADEON
#define OSCCAL_REG_NAME OSCCAL0 //841 uses OSCCAL0; others use OSCCAL
void setup() {
OSCCAL_REG_NAME = 0x1D; //tuned for this particular part
#ifdef FADEON
pinMode(PIN_LED_INDICATOR, OUTPUT);
analogWrite(PIN_LED_INDICATOR, 200);
#else
pinMode(PIN_LED_INDICATOR, OUTPUT);
digitalWrite(PIN_LED_INDICATOR, HIGH);
#endif
Serial.begin(19200);
delay(100);
Serial.println(F("Welcome to BareChip"));
}
void loop() {
stdBlink();
}
void stdBlink() {
#ifdef FADEON
analogWrite(PIN_LED_INDICATOR, 64);
delay(1000);
analogWrite(PIN_LED_INDICATOR, 200);
delay (1000);
#else
digitalWrite(PIN_LED_INDICATOR, LOW);
delay(200);
digitalWrite(PIN_LED_INDICATOR, HIGH);
delay(800);
#endif
}
ahshah commented
Confirmed.. not seeing PWM on my basic LED setup.
Commit that broke PWM: 6152259
I've proposed a fix here: https://github.com/ahshah/ATTinyCore/tree/Tiny841_PWM_Fix
Please sync and test it and confirm it works. Once you do I can create a pull request.