Automatically set a default threshold for touchio.TouchIn channels

1 files changed, 4 insertions, 1 deletions

diff --git a/ports/nrf/common-hal/touchio/TouchIn.c b/ports/nrf/common-hal/touchio/TouchIn.c
index 5d8d640e0..ba50b17b0 100644
--- a/ports/nrf/common-hal/touchio/TouchIn.c
+++ b/ports/nrf/common-hal/touchio/TouchIn.c
@@ -77,6 +77,8 @@ void common_hal_touchio_touchin_construct(touchio_touchin_obj_t* self,
         const mcu_pin_obj_t *pin) {
     self->pin = pin;
     claim_pin(pin);
+
+    self->threshold = get_raw_reading(self) * 1.05 + 100;
 }
 
 bool common_hal_touchio_touchin_deinited(touchio_touchin_obj_t* self) {
@@ -108,6 +110,7 @@ uint16_t common_hal_touchio_touchin_get_threshold(touchio_touchin_obj_t *self) {
     return self->threshold;
 }
 
-void common_hal_touchio_touchin_set_threshold(touchio_touchin_obj_t *self, uint16_t new_threshold) {
+void common_hal_touchio_touchin_set_threshold(touchio_touchin_obj_t *self,
+        uint16_t new_threshold) {
     self->threshold = new_threshold;
 }