/* gain to pulse and scale conversion */
#define HX711_GAIN_MAX 3
+#define HX711_RESET_GAIN 128
struct hx711_gain_to_scale {
int gain;
static int hx711_reset(struct hx711_data *hx711_data)
{
- int ret;
- int val = gpiod_get_value(hx711_data->gpiod_dout);
+ int val = hx711_wait_for_ready(hx711_data);
if (val) {
/*
msleep(10);
gpiod_set_value(hx711_data->gpiod_pd_sck, 0);
- ret = hx711_wait_for_ready(hx711_data);
- if (ret)
- return ret;
- /*
- * after a reset the gain is 128 so we do a dummy read
- * to set the gain for the next read
- */
- ret = hx711_read(hx711_data);
- if (ret < 0)
- return ret;
-
- /*
- * after a dummy read we need to wait vor readiness
- * for not mixing gain pulses with the clock
- */
val = hx711_wait_for_ready(hx711_data);
+
+ /* after a reset the gain is 128 */
+ hx711_data->gain_set = HX711_RESET_GAIN;
}
return val;