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PinManager: additional GPIO infos

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bool isPinTouch(int gpio);                                   // true if gpio supports touch functions
  bool isPinAnalog(int gpio);                                  // true if gpio supports analogRead
  bool isPinADC1(int gpio);                                    // true if gpio supports analogRead, and it belongs to ADC unit 1
  bool isPinADC2(int gpio);                                    // true if gpio supports analogRead, and it belongs to ADC unit 2
  #define PM_NO_PIN 255
  typedef enum { ADC_none = 0, ADC1 = 1, ADC2 = 2 } AdcIdentifier;
  uint8_t  getADCPin(AdcIdentifier adcUnit, uint8_t adcPort);   // get GPIO number for ADC unit x, channel y. 255 = no such pin
This commit is contained in:
Frank
2023-01-20 19:21:45 +01:00
parent 1f921bf0c9
commit 45e46822a1
4 changed files with 115 additions and 2 deletions
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80
wled00/pin_manager.cpp
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@@ -597,6 +597,86 @@ bool PinManagerClass::joinWire(int8_t pinSDA, int8_t pinSCL) {
return(true);
}
// WLEDMM more additions
// returns true if gpio supports touch functions
bool PinManagerClass::isPinTouch(int gpio) {
#if defined(ARDUINO_ARCH_ESP32)
if (digitalPinToTouchChannel(gpio) >= 0) return true;
#endif
return false; // fall-through case
}
// returns true if gpio supports analogRead
bool PinManagerClass::isPinAnalog(int gpio) {
#if !defined(ARDUINO_ARCH_ESP32)
if (gpio == A0) return true; // for 8266
#else // for ESP32 variants
if (digitalPinToAnalogChannel(gpio) >= 0) return true;
#endif
return false; // fall-through case
}
// returns true if gpio supports analogRead, and it belongs to ADC unit 1
bool PinManagerClass::isPinADC1(int gpio) {
if ((gpio < 0) || !isPinAnalog(gpio)) return false;
#if !defined(ARDUINO_ARCH_ESP32)
if (gpio == A0) return true; // for 8266
#else // for ESP32 variants
#ifdef SOC_ADC_CHANNEL_NUM
if (digitalPinToAnalogChannel(gpio) < SOC_ADC_CHANNEL_NUM(0)) return true; // ADC1 on ESP32-S3, ESP32-S2, ESP32-C3
#else
if (digitalPinToAnalogChannel(gpio) < 8) return true; // ADC1 on classic ESP32
#endif
#endif
return false; // fall-through case
}
// returns true if gpio supports analogRead, and it belongs to ADC unit 2
bool PinManagerClass::isPinADC2(int gpio) {
if ((gpio < 0) || !isPinAnalog(gpio)) return false; // catch errors
#if !defined(ARDUINO_ARCH_ESP32)
return false; // for 8266 - no ADC2
#else // for ESP32 variants
if (isPinADC1(gpio) == false) return true; // analog but not ADC1 --> must be ADC2
#endif
return false; // fall-through case
}
// returns GPIO number for ADC unit x, channel y. 255 = no such pin
// see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/gpio.html#gpio-summary
uint8_t PinManagerClass::getADCPin(AdcIdentifier adcUnit, uint8_t adcPort)
{
#if !defined(ARDUINO_ARCH_ESP32)
if ((adcUnit == ADC1) && (adcPort == 0)) return A0; // for 8266
else return(PM_NO_PIN);
#else // for ESP32 variants
if ((adcUnit != ADC1) && (adcUnit != ADC2)) return(PM_NO_PIN); // catch errors
#if defined(SOC_ADC_MAX_CHANNEL_NUM) // for ESP32-S3, ESP32-S2, ESP32-C3
int8_t analogChannel = (adcUnit == ADC1) ? adcPort : (SOC_ADC_MAX_CHANNEL_NUM + adcPort);
if (adcPort >= SOC_ADC_MAX_CHANNEL_NUM) analogChannel = 255;
#else // for classic ESP32
int8_t analogChannel = (adcUnit == ADC1) ? adcPort : (10 + adcPort);
if (adcPort >= 10) analogChannel = 255;
#endif
//int analogPin = analogChannelToDigitalPin(analogChannel);
int analogPin = analogInputToDigitalPin(analogChannel);
if (analogPin >= 0) return(analogPin);
else return(PM_NO_PIN);
#endif
return(PM_NO_PIN); // fall-through case
}
// WLEDMM end
/* see https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/peripherals/gpio.html
* The ESP32-S3 chip features 45 physical GPIO pins (GPIO0 ~ GPIO21 and GPIO26 ~ GPIO48). Each pin can be used as a general-purpose I/O
* Strapping pins: GPIO0, GPIO3, GPIO45 and GPIO46 are strapping pins. For more infomation, please refer to ESP32-S3 datasheet.