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spresense: return valid reference voltage

This commit is contained in:
Kamil Tomaszewski 2021-03-02 13:34:38 +01:00
parent 64192b0ebf
commit f9d21637a3
1 changed files with 11 additions and 4 deletions
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15
ports/cxd56/common-hal/analogio/AnalogIn.c
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@ -114,11 +114,18 @@ uint16_t common_hal_analogio_analogin_get_value(analogio_analogin_obj_t *self) {
// Reference voltage is a fixed value which is depending on the board.
// e.g.)
// - Reference Voltage of A4 and A5 pins on Main Board is 0.7V.
// - Reference Voltage of A0 ~ A5 pins on External Interface board
// is selected 3.3V or 5.0V by a IO Volt jumper pin.
// - Reference Voltage of A2 and A3 pins on Main Board is 0.7V.
// - Reference Voltage of A0 ~ A5 pins on External Interface board is 5.0V
float common_hal_analogio_analogin_get_reference_voltage(analogio_analogin_obj_t *self) {
return 0.0f;
float voltage;
if (self->number == 2 || self->number == 3) {
voltage = 0.0f;
} else {
voltage = 5.0f;
}
return voltage;
}
void analogin_reset(void) {