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allow to set pin to OUTPUT_OPEN_DRAIN in analogWriteMode (#7841)

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* allow to set pin to OUTPUT_OPEN_DRAIN in analogWrite

* remove parameter with default value

* Update core_esp8266_wiring_pwm.cpp

* update documentation accordingly
This commit is contained in:
Michael Kluge
2021-01-27 08:56:43 +01:00
committed by GitHub
parent 53e5688453
commit f2d83ba43d
3 changed files with 14 additions and 1 deletions
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1
cores/esp8266/Arduino.h
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@ -171,6 +171,7 @@ int digitalRead(uint8_t pin);
int analogRead(uint8_t pin);
void analogReference(uint8_t mode);
void analogWrite(uint8_t pin, int val);
void analogWriteMode(uint8_t pin, int val, bool openDrain);
void analogWriteFreq(uint32_t freq);
void analogWriteResolution(int res);
void analogWriteRange(uint32_t range);

11
cores/esp8266/core_esp8266_wiring_pwm.cpp
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@ -44,6 +44,10 @@ extern void __analogWriteFreq(uint32_t freq) {
}
extern void __analogWrite(uint8_t pin, int val) {
analogWriteMode(pin, val, false);
}
extern void __analogWriteMode(uint8_t pin, int val, bool openDrain) {
if (pin > 16) {
return;
}
@ -62,7 +66,11 @@ extern void __analogWrite(uint8_t pin, int val) {
analogMap &= ~(1 << pin);
}
else {
pinMode(pin, OUTPUT);
if(openDrain) {
pinMode(pin, OUTPUT_OPEN_DRAIN);
} else {
pinMode(pin, OUTPUT);
}
}
uint32_t high = (analogPeriod * val) / analogScale;
uint32_t low = analogPeriod - high;
@ -88,6 +96,7 @@ extern void __analogWriteResolution(int res) {
}
extern void analogWrite(uint8_t pin, int val) __attribute__((weak, alias("__analogWrite")));
extern void analogWriteMode(uint8_t pin, int val, bool openDrain) __attribute__((weak, alias("__analogWriteMode")));
extern void analogWriteFreq(uint32_t freq) __attribute__((weak, alias("__analogWriteFreq")));
extern void analogWriteRange(uint32_t range) __attribute__((weak, alias("__analogWriteRange")));
extern void analogWriteResolution(int res) __attribute__((weak, alias("__analogWriteResolution")));