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This repository was archived by the owner on Feb 28, 2024. It is now read-only.
GPIO pins go high on startup #72
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Description
Dear all
The GPIO pins seem to go high on startup when calling digital_programmables.init(). I have fixed it by setting the Pin to off before setting the pinMode.
Line 86 of ArduinoIOExpander.cpp looks now like this. Everything seems to work as intended
void ArduinoIOExpanderClass::initPins() { if (_tca.getAddress() == IO_ADD) { PinStatus status = SWITCH_OFF; set(IO_WRITE_CH_PIN_00, status); set(IO_WRITE_CH_PIN_01, status); set(IO_WRITE_CH_PIN_02, status); set(IO_WRITE_CH_PIN_03, status); set(IO_WRITE_CH_PIN_04, status); set(IO_WRITE_CH_PIN_05, status); set(IO_WRITE_CH_PIN_06, status); set(IO_WRITE_CH_PIN_07, status); set(IO_WRITE_CH_PIN_08, status); set(IO_WRITE_CH_PIN_09, status); set(IO_WRITE_CH_PIN_10, status); set(IO_WRITE_CH_PIN_11, status); pinMode(IO_WRITE_CH_PIN_00, OUTPUT); pinMode(IO_WRITE_CH_PIN_01, OUTPUT); pinMode(IO_WRITE_CH_PIN_02, OUTPUT); pinMode(IO_WRITE_CH_PIN_03, OUTPUT); pinMode(IO_WRITE_CH_PIN_04, OUTPUT); pinMode(IO_WRITE_CH_PIN_05, OUTPUT); pinMode(IO_WRITE_CH_PIN_06, OUTPUT); pinMode(IO_WRITE_CH_PIN_07, OUTPUT); pinMode(IO_WRITE_CH_PIN_08, OUTPUT); pinMode(IO_WRITE_CH_PIN_09, OUTPUT); pinMode(IO_WRITE_CH_PIN_10, OUTPUT); pinMode(IO_WRITE_CH_PIN_11, OUTPUT); pinMode(IO_READ_CH_PIN_00, INPUT); pinMode(IO_READ_CH_PIN_01, INPUT); pinMode(IO_READ_CH_PIN_02, INPUT); pinMode(IO_READ_CH_PIN_03, INPUT); pinMode(IO_READ_CH_PIN_04, INPUT); pinMode(IO_READ_CH_PIN_05, INPUT); pinMode(IO_READ_CH_PIN_06, INPUT); pinMode(IO_READ_CH_PIN_07, INPUT); pinMode(IO_READ_CH_PIN_08, INPUT); pinMode(IO_READ_CH_PIN_09, INPUT); pinMode(IO_READ_CH_PIN_10, INPUT); pinMode(IO_READ_CH_PIN_11, INPUT); } else { pinMode(DIN_READ_CH_PIN_00, INPUT); pinMode(DIN_READ_CH_PIN_01, INPUT); pinMode(DIN_READ_CH_PIN_02, INPUT); pinMode(DIN_READ_CH_PIN_03, INPUT); pinMode(DIN_READ_CH_PIN_04, INPUT); pinMode(DIN_READ_CH_PIN_05, INPUT); pinMode(DIN_READ_CH_PIN_06, INPUT); pinMode(DIN_READ_CH_PIN_07, INPUT); } }So far I have not observed any unwanted effects from this change