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-rw-r--r--ports/stm32/pin.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ports/stm32/pin.c b/ports/stm32/pin.c
index f1c5eee85..ad153311e 100644
--- a/ports/stm32/pin.c
+++ b/ports/stm32/pin.c
@@ -256,6 +256,9 @@ mp_obj_t mp_pin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
mp_map_t kw_args;
mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
pin_obj_init_helper(pin, n_args - 1, args + 1, &kw_args);
+ } else {
+ // enable the peripheral clock so pin reading at least works
+ mp_hal_gpio_clock_enable(pin->gpio);
}
return MP_OBJ_FROM_PTR(pin);