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Don't stop a waveform simply by calling pinMode (#4906)

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Setting a pin direction would cause a waveform generator attached to it to stop.
This could cause PWM to stop if pinMode() is called while running (as it was
called in __analogWrite()).

Remove the stopWaveform call from pinMode, the Tone, analogWrite, or Servo
that initiated the waveform has responsibility for stopping it (and it does)
when complete, irrespective of the pinMode.

Fixes #4905
This commit is contained in:
Earle F. Philhower, III 2018-07-08 20:27:13 -07:00 committed by GitHub
parent e486887f18
commit d948a1ff2a
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cores/esp8266/core_esp8266_wiring_digital.c
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@ -29,7 +29,6 @@
uint8_t esp8266_gpioToFn[16] = {0x34, 0x18, 0x38, 0x14, 0x3C, 0x40, 0x1C, 0x20, 0x24, 0x28, 0x2C, 0x30, 0x04, 0x08, 0x0C, 0x10};
extern void __pinMode(uint8_t pin, uint8_t mode) {
stopWaveform(pin);
if(pin < 16){
if(mode == SPECIAL){
GPC(pin) = (GPC(pin) & (0xF << GPCI)); //SOURCE(GPIO) | DRIVER(NORMAL) | INT_TYPE(UNCHANGED) | WAKEUP_ENABLE(DISABLED)