got rid of gdo0/gdo2 for every board except esp8266, that needs to know which single pin to use bidirectionally

esphome/components/cc1101/cc1101.cpp

@@ -6,7 +6,13 @@
   It can be compiled with Arduino and esp-idf framework and should support any esphome compatible board through the SPI
   Bus.
 
-  On ESP8266, you can use the same pin for GDO and GD2 (it is an optional parameter).
+  On ESP8266, you can use a single pin instead of GD0O and GD02 (gdo0 is an optional parameter). If assigned,
+  the pin direction will be reversed for the transfers.
+
+  On ESP32, this will not work, you must connect two separate pins. TX to GDO0, RX to GDO2.
+  If only TX works, they are probably switched.
+
+  Transferst must be surrounded with cc1101.begin_tx and cc1101.end_tx.
 
   The source code is a mashup of the following github projects with some special esphome sauce:
 
@@ -48,7 +54,6 @@ static const uint8_t PA_TABLE_915[10]{0x03, 0x0E, 0x1E, 0x27, 0x38, 0x8E, 0x84,
 
 CC1101::CC1101() {
   this->gdo0_ = nullptr;
-  this->gdo2_ = nullptr;
   this->bandwidth_ = 200;
   this->frequency_ = 433920;
   this->rssi_sensor_ = nullptr;
@@ -80,14 +85,7 @@ CC1101::CC1101() {
   this->pa_table_[1] = 0xc0;
 }
 
-void CC1101::set_config_gdo0(InternalGPIOPin *pin) {
+void CC1101::set_config_gdo0(InternalGPIOPin *pin) { gdo0_ = pin; }
-  gdo0_ = pin;
-
-  if (gdo2_ == nullptr)
-    gdo2_ = pin;
-}
-
-void CC1101::set_config_gdo2(InternalGPIOPin *pin) { gdo2_ = pin; }
 
 void CC1101::set_config_bandwidth(uint32_t bandwidth) { bandwidth_ = bandwidth; }
 
@@ -98,10 +96,10 @@ void CC1101::set_config_rssi_sensor(sensor::Sensor *rssi_sensor) { rssi_sensor_
 void CC1101::set_config_lqi_sensor(sensor::Sensor *lqi_sensor) { lqi_sensor_ = lqi_sensor; }
 
 void CC1101::setup() {
+  if (this->gdo0_ != nullptr) {
     this->gdo0_->setup();
-  this->gdo2_->setup();
+    this->gdo0_->pin_mode(gpio::FLAG_INPUT);
-  this->gdo0_->pin_mode(gpio::FLAG_OUTPUT);
+  }
-  this->gdo2_->pin_mode(gpio::FLAG_INPUT);
 
   this->spi_setup();
 
@@ -184,7 +182,6 @@ void CC1101::dump_config() {
   ESP_LOGCONFIG(TAG, "CC1101 partnum %02x version %02x:", this->partnum_, this->version_);
   LOG_PIN("  CC1101 CS Pin: ", this->cs_);
   LOG_PIN("  CC1101 GDO0: ", this->gdo0_);
-  LOG_PIN("  CC1101 GDO2: ", this->gdo2_);
   ESP_LOGCONFIG(TAG, "  CC1101 Bandwith: %d KHz", this->bandwidth_);
   ESP_LOGCONFIG(TAG, "  CC1101 Frequency: %d KHz", this->frequency_);
   LOG_SENSOR("  ", "RSSI", this->rssi_sensor_);
@@ -646,7 +643,7 @@ void CC1101::split_mdmcfg4_() {
 void CC1101::begin_tx() {
   this->set_tx_();
 
-  if (this->gdo0_ == this->gdo2_) {
+  if (this->gdo0_ != nullptr) {
 #ifdef USE_ESP8266
 #ifdef USE_ARDUINO
     noInterrupts();  // NOLINT
@@ -659,7 +656,7 @@ void CC1101::begin_tx() {
 }
 
 void CC1101::end_tx() {
-  if (this->gdo0_ == this->gdo2_) {
+  if (this->gdo0_ != nullptr) {
 #ifdef USE_ESP8266
 #ifdef USE_ARDUINO
     interrupts();  // NOLINT

esphome/components/cc1101/cc1101.h

@@ -13,7 +13,6 @@ class CC1101 : public sensor::Sensor,
                                      spi::DATA_RATE_1KHZ> {
  protected:
   InternalGPIOPin *gdo0_;
-  InternalGPIOPin *gdo2_;
   uint32_t bandwidth_;
   uint32_t frequency_;
   sensor::Sensor *rssi_sensor_;
@@ -78,7 +77,6 @@ class CC1101 : public sensor::Sensor,
   CC1101();
 
   void set_config_gdo0(InternalGPIOPin *pin);
-  void set_config_gdo2(InternalGPIOPin *pin);
   void set_config_bandwidth(uint32_t bandwidth);
   void set_config_frequency(uint32_t frequency);
   void set_config_rssi_sensor(sensor::Sensor *rssi_sensor);

esphome/components/cc1101/sensor.py

@@ -16,7 +16,6 @@ from esphome.const import (
 DEPENDENCIES = ["spi"]
 
 CONF_GDO0 = "gdo0"
-CONF_GDO2 = "gdo2"
 CONF_BANDWIDTH = "bandwidth"
 # CONF_FREQUENCY = "frequency"
 CONF_RSSI = "rssi"
@@ -32,8 +31,7 @@ CONFIG_SCHEMA = (
     cv.Schema(
         {
             cv.GenerateID(): cv.declare_id(CC1101),
-            cv.Required(CONF_GDO0): pins.gpio_output_pin_schema,
+            cv.Optional(CONF_GDO0): pins.gpio_output_pin_schema,
-            cv.Optional(CONF_GDO2): pins.gpio_input_pin_schema,
             cv.Optional(CONF_BANDWIDTH, default=200): cv.uint32_t,
             cv.Optional(CONF_FREQUENCY, default=433920): cv.uint32_t,
             cv.Optional(CONF_RSSI): sensor.sensor_schema(
@@ -73,11 +71,9 @@ async def to_code(config):
     await cg.register_component(var, config)
     await spi.register_spi_device(var, config)
 
+    if CONF_GDO0 in config:
         gdo0 = await cg.gpio_pin_expression(config[CONF_GDO0])
         cg.add(var.set_config_gdo0(gdo0))
-    if CONF_GDO2 in config:
-        gdo2 = await cg.gpio_pin_expression(config[CONF_GDO2])
-        cg.add(var.set_config_gdo2(gdo2))
     cg.add(var.set_config_bandwidth(config[CONF_BANDWIDTH]))
     cg.add(var.set_config_frequency(config[CONF_FREQUENCY]))
     if CONF_RSSI in config:

tests/components/cc1101/test.esp32-c3-idf.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO10
-    gdo0:
-      number: GPIO3
-      allow_other_uses: true
-    gdo2:
-      number: GPIO4
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -28,16 +22,12 @@ remote_transmitter:
   - pin: GPIO21  # TX pin
     carrier_duty_percent: 100%
     id: dummytx
-  - pin:
+  - pin: GPIO3  # GDO0
-      number: GPIO3  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
     id: realtx
 
 remote_receiver:
-  pin:
+  pin: GPIO4  # GDO2
-    number: GPIO4  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp32-c3.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO10
-    gdo0:
-      number: GPIO3
-      allow_other_uses: true
-    gdo2:
-      number: GPIO4
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -28,16 +22,12 @@ remote_transmitter:
   - pin: GPIO21  # TX pin
     carrier_duty_percent: 100%
     id: dummytx
-  - pin:
+  - pin: GPIO3  # GDO0
-      number: GPIO3  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
     id: realtx
 
 remote_receiver:
-  pin:
+  pin: GPIO4  # GDO2
-    number: GPIO4  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp32-idf.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO5
-    gdo0:
-      number: GPIO32
-      allow_other_uses: true
-    gdo2:
-      number: GPIO33
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -21,15 +15,11 @@ sensor:
       name: LQI
 
 remote_transmitter:
-  - pin:
+  - pin: GPIO32  # GDO0
-      number: GPIO32  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
 
 remote_receiver:
-  pin:
+  pin: GPIO33  # GDO2
-    number: GPIO33  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp32-s2-idf.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO34
-    gdo0:
-      number: GPIO8
-      allow_other_uses: true
-    gdo2:
-      number: GPIO9
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -21,15 +15,11 @@ sensor:
       name: LQI
 
 remote_transmitter:
-  - pin:
+  - pin: GPIO8  # GDO0
-      number: GPIO8  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
 
 remote_receiver:
-  pin:
+  pin: GPIO9  # GDO2
-    number: GPIO9  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp32-s2.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO34
-    gdo0:
-      number: GPIO8
-      allow_other_uses: true
-    gdo2:
-      number: GPIO9
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -21,15 +15,11 @@ sensor:
       name: LQI
 
 remote_transmitter:
-  - pin:
+  - pin: GPIO8  # GDO0
-      number: GPIO8  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
 
 remote_receiver:
-  pin:
+  pin: GPIO9  # GDO2
-    number: GPIO9  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp32.yaml

@@ -7,12 +7,6 @@ sensor:
   - platform: cc1101
     id: transceiver
     cs_pin: GPIO5
-    gdo0:
-      number: GPIO32
-      allow_other_uses: true
-    gdo2:
-      number: GPIO33
-      allow_other_uses: true
     bandwidth: 200
     frequency: 433920
     rssi:
@@ -21,15 +15,11 @@ sensor:
       name: LQI
 
 remote_transmitter:
-  - pin:
+  - pin: GPIO32  # GDO0
-      number: GPIO32  # GDO0
-      allow_other_uses: true
     carrier_duty_percent: 100%
 
 remote_receiver:
-  pin:
+  pin: GPIO33  # GDO2
-    number: GPIO33  # GDO0
-    allow_other_uses: true
   dump:
     - rc_switch
   # Settings to optimize recognition of RF devices

tests/components/cc1101/test.esp8266.yaml

@@ -10,7 +10,6 @@ sensor:
     gdo0:
       number: D1  # GPIO5
       allow_other_uses: true
-    # gdo2: not used with ESP8266
     bandwidth: 200
     frequency: 433920
     rssi: