Onewire (#6967)

* retry scan

* setup pin and log retries

* fix retries

* remove retries

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Co-authored-by: Samuel Sieb <samuel@sieb.net>

esphome/components/gpio/one_wire/gpio_one_wire.cpp

@@ -9,6 +9,10 @@ static const char *const TAG = "gpio.one_wire";
 
 void GPIOOneWireBus::setup() {
   ESP_LOGCONFIG(TAG, "Setting up 1-wire bus...");
+  this->t_pin_->setup();
+  // clear bus with 480µs high, otherwise initial reset in search might fail
+  this->t_pin_->pin_mode(gpio::FLAG_INPUT | gpio::FLAG_PULLUP);
+  delayMicroseconds(480);
   this->search();
 }