esp32s3 TouchPad not working #13178
Description
from machine import TouchPad, Pin
import time
t = TouchPad(Pin(5))
for i in range(100):
time.sleep(0.5)
print("%X"%t.read())The same code changes the number with touch on ESP32, but the reading does not change on ESP32s3
Adjusting the initialization code as follows works fine, but I am not familiar enough with ESP32 and have not fully tested it, for reference only. Additionally, I suspect that the same issue also exists in ESP32s2
The changes are minimal, move the touch_Pad_Fsm_Start to touch_Pad_config After
STATIC mp_obj_t mtp_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw,
const mp_obj_t *args) {
mp_arg_check_num(n_args, n_kw, 1, 1, true);
gpio_num_t pin_id = machine_pin_get_id(args[0]);
const mtp_obj_t *self = NULL;
for (int i = 0; i < MP_ARRAY_SIZE(touchpad_obj); i++) {
if (pin_id == touchpad_obj[i].gpio_id) {
self = &touchpad_obj[i];
break;
}
}
if (!self) {
mp_raise_ValueError(MP_ERROR_TEXT("invalid pin for touchpad"));
}
static int initialized = 0;
if (!initialized) {
touch_pad_init();
touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
initialized = 1;
}
#if CONFIG_IDF_TARGET_ESP32
esp_err_t err = touch_pad_config(self->touchpad_id, 0);
#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
esp_err_t err = touch_pad_config(self->touchpad_id);
touch_pad_fsm_start();
#endif
if (err == ESP_OK) {
return MP_OBJ_FROM_PTR(self);
}
mp_raise_ValueError(MP_ERROR_TEXT("Touch pad error"));
}