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esp32/machine_pin: Reset pin if init sets mode.

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This will forcibly grab the pin back from the ADC if it has previously been
associated with it.

Fixes #5771.
This commit is contained in:
Jonathan Hogg 2020-11-09 13:11:52 +00:00 committed by Damien George
parent b04240cb77
commit 8a917ad252
1 changed files with 5 additions and 0 deletions
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5
ports/esp32/machine_pin.c
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@ -150,6 +150,11 @@ STATIC mp_obj_t machine_pin_obj_init_helper(const machine_pin_obj_t *self, size_
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
// reset the pin first if this is a mode-setting init (grab it back from ADC)
if (args[ARG_mode].u_obj != mp_const_none) {
gpio_reset_pin(self->id);
}
// configure the pin for gpio
gpio_pad_select_gpio(self->id);