TTGO_T_DISPLAY GPIO set twice

[Wapata]

Hi ! I wanted to free up my0GPIO27- D3 and GPIO12-D4 for setting DIN_MIDI to theses places. But I don't know what to put in the "const byte pin" line to free theses pin... an non-existant GPIO like GPIO40 ?

And then i've seen that GPIO_NUM_15 is used in two places, DIN_MIDI_IN and FASTLEDS_DATE_PIN As my LED are working... I suspect that it should be an electrical mess somewhere.

Pedalino.h

#elif defined TTGO_T_DISPLAY
#undef  PEDALS
#define PEDALS                8
const byte pinD[] = {GPIO_NUM_25, GPIO_NUM_26, GPIO_NUM_27, GPIO_NUM_12, GPIO_NUM_13, GPIO_NUM_17, GPIO_NUM_35, GPIO_NUM_0};
const byte pinA[] = {GPIO_NUM_36, GPIO_NUM_37, GPIO_NUM_38, GPIO_NUM_39, GPIO_NUM_32, GPIO_NUM_33, GPIO_NUM_35, GPIO_NUM_0};
#define FACTORY_DEFAULT_PIN   GPIO_NUM_0    // Button 2
#define USB_MIDI_IN_PIN       GPIO_NUM_21   // SDA
#define USB_MIDI_OUT_PIN      GPIO_NUM_22   // SCL
**#define DIN_MIDI_IN_PIN       GPIO_NUM_15**
#define DIN_MIDI_OUT_PIN      GPIO_NUM_2
#define BATTERY_PIN           GPIO_NUM_34   // Pin connected to VBAT
#define BATTERY_ADC_EN        GPIO_NUM_14   // ADC_EN is the ADC detection enable port
**#define FASTLEDS_DATA_PIN     GPIO_NUM_15**

[alf45tar]

• Reduce PEDALS from 8 to 7
• Delete GPIO_NUM_27 and GPIO_NUM_12 from pinD[]
• Move GPIO_NUM_39 from pinA[] to pinD[]

  #elif defined TTGO_T_DISPLAY
  #undef  PEDALS
  #define PEDALS                7
  const byte pinD[] = {GPIO_NUM_25, GPIO_NUM_26, GPIO_NUM_39, GPIO_NUM_13, GPIO_NUM_17, GPIO_NUM_35, GPIO_NUM_0};
  const byte pinA[] = {GPIO_NUM_36, GPIO_NUM_37, GPIO_NUM_38, GPIO_NUM_32, GPIO_NUM_33, GPIO_NUM_35, GPIO_NUM_0};
  #define FACTORY_DEFAULT_PIN   GPIO_NUM_0    // Button 2
  #define USB_MIDI_IN_PIN       GPIO_NUM_21   // SDA
  #define USB_MIDI_OUT_PIN      GPIO_NUM_22   // SCL
  #define DIN_MIDI_IN_PIN       GPIO_NUM_12
  #define DIN_MIDI_OUT_PIN      GPIO_NUM_27
  #define BATTERY_PIN           GPIO_NUM_34   // Pin connected to VBAT
  #define BATTERY_ADC_EN        GPIO_NUM_14   // ADC_EN is the ADC detection enable port
  #define FASTLEDS_DATA_PIN     GPIO_NUM_15

[Wapata]

Mmmm, some questions : As I use PIN 38-A3 and 39-A4 for my two ladders I guess I should not move the pin 39 from Analog no ? Why pedals from 8 to 7 and not 8 to 6 ?

In the end I should just free up One pin only, GPIO2 is free (and may be my second Midi IN) and then I need an other. Plus, if i'm okay with that, i guess I can use only One Midi OUT for both interface, it should work to merge theses two electrical connections (i will lose a Midi router rule only..).

What do you think ?

ps : my setup Pedal 1 - A1-D1 is a pot Pedal 2 - A2-D2 is a pot Pedal 3 - A3 is a ladder Pedal 4 - A4 is a ladder Pedal 5 - A5-D5 is a jack (so can be everything) Pedal 6 - A6-D6 is a jack (so can be everything)

[alf45tar]

#elif` defined TTGO_T_DISPLAY
#undef  PEDALS
#define PEDALS                8
const byte pinD[] = {GPIO_NUM_25, GPIO_NUM_26, GPIO_NUM_25, GPIO_NUM_26, GPIO_NUM_13, GPIO_NUM_17, GPIO_NUM_35, GPIO_NUM_0};
const byte pinA[] = {GPIO_NUM_36, GPIO_NUM_37, GPIO_NUM_38, GPIO_NUM_39, GPIO_NUM_32, GPIO_NUM_33, GPIO_NUM_35, GPIO_NUM_0};
#define FACTORY_DEFAULT_PIN   GPIO_NUM_0    // Button 2
#define USB_MIDI_IN_PIN       GPIO_NUM_21   // SDA
#define USB_MIDI_OUT_PIN      GPIO_NUM_22   // SCL
#define DIN_MIDI_IN_PIN       GPIO_NUM_12
#define DIN_MIDI_OUT_PIN      GPIO_NUM_27
#define BATTERY_PIN           GPIO_NUM_34   // Pin connected to VBAT
#define BATTERY_ADC_EN        GPIO_NUM_14   // ADC_EN is the ADC detection enable port
#define FASTLEDS_DATA_PIN     `GPIO_NUM_15```

[Wapata]

Mouahaha I understand all the changes :-D

Thank you very much for your answers :-) 👍 Have a great day !