ESPHome Device Builder
294 lines
8.0 KiB
YAML
294 lines
8.0 KiB
YAML
#:########################################################################################:#
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# ESP-NOW Test Transmitter 1
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#:########################################################################################:#
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#
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# DEVICE:
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# ESP32-S3-Zero / ESP32-S3 Super Mini
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#
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# VERSION:
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# 1.2 - 2026-07-11
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# - Changed GPIO4 wake source to ESP32 EXT1 ANY_LOW.
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# - Added delay to allow ESP-NOW to initialise before transmission.
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# - Added GPIO4 input and pull-up initialisation.
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# - Waits for the wake button to be released before entering deep sleep.
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# - Logs the ESP32 wake cause.
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# - Sends each message three times for improved broadcast reliability.
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#
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# WIRING:
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#
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# 3.3 V
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# |
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# 10 kΩ
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# |
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# +-------- GPIO4
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# |
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# Push button
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# |
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# GND
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#
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# OPERATION:
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# - Power-up or reset causes one transmission.
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# - The transmitter sends the same ESP-NOW message three times.
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# - It waits for GPIO4 to return HIGH.
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# - It then enters deep sleep.
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# - Pulling GPIO4 LOW wakes the transmitter and repeats the sequence.
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#
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# MESSAGE FORMAT:
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# REMOTE_A:BUTTON_1:<random press ID>
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#
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# IMPORTANT:
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# - ESP-NOW channel must match the receiver network channel.
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# - The receiver is currently operating on channel 5.
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# - This transmitter deliberately does not connect to normal Wi-Fi.
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# - Firmware updates are performed by USB.
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#
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#:########################################################################################:#
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substitutions:
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device_name: esp-espnow-test-transmitter1
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friendly_name: "ESPNow Test Transmitter 1"
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remote_id: "REMOTE_A"
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button_id: "BUTTON_1"
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espnow_channel: "5"
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wake_gpio: "4"
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#:########################################################################################:#
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# ESPHome Core
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#:########################################################################################:#
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esphome:
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name: ${device_name}
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friendly_name: ${friendly_name}
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on_boot:
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priority: -100
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then:
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- lambda: |-
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// Explicitly configure GPIO4 as an input with a pull-up.
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gpio_set_direction(GPIO_NUM_4, GPIO_MODE_INPUT);
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gpio_set_pull_mode(GPIO_NUM_4, GPIO_PULLUP_ONLY);
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const esp_sleep_wakeup_cause_t wake_cause =
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esp_sleep_get_wakeup_cause();
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ESP_LOGI(
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"wake",
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"ESP-NOW transmitter booted. Wake cause: %d",
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static_cast<int>(wake_cause)
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);
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if (wake_cause == ESP_SLEEP_WAKEUP_EXT1) {
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ESP_LOGI("wake", "Wake was caused by the GPIO4 EXT1 input.");
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} else if (wake_cause == ESP_SLEEP_WAKEUP_UNDEFINED) {
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ESP_LOGI("wake", "Wake was caused by power-up or reset.");
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} else {
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ESP_LOGI(
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"wake",
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"Wake was caused by another source: %d",
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static_cast<int>(wake_cause)
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);
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}
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# Allow all ESPHome components, including ESP-NOW, to finish setup.
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- delay: 750ms
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- lambda: |-
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id(press_id) = esp_random();
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char payload_buffer[96];
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snprintf(
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payload_buffer,
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sizeof(payload_buffer),
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"${remote_id}:${button_id}:%lu",
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static_cast<unsigned long>(id(press_id))
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);
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id(transmit_payload) = payload_buffer;
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ESP_LOGI(
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"espnow_tx",
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"Prepared payload: %s",
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id(transmit_payload).c_str()
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);
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- script.execute: send_espnow_press
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- script.wait: send_espnow_press
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- logger.log:
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level: INFO
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format: "Transmission sequence completed."
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# Do not enter sleep while GPIO4 is still held LOW.
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- logger.log:
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level: INFO
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format: "Waiting for GPIO4 button release."
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- wait_until:
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condition:
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lambda: |-
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return gpio_get_level(GPIO_NUM_4) == 1;
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- delay: 100ms
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- logger.log:
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level: INFO
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format: "GPIO4 released. Entering deep sleep."
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- delay: 100ms
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- deep_sleep.enter: deep_sleep_control
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#:########################################################################################:#
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# ESP32 Hardware
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#:########################################################################################:#
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esp32:
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board: esp32-s3-devkitc-1
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framework:
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type: esp-idf
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#:########################################################################################:#
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# Logging
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#:########################################################################################:#
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logger:
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level: DEBUG
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#:########################################################################################:#
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# ESP-NOW
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#:########################################################################################:#
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#
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# The transmitter does not connect to Wi-Fi, so its radio channel is set
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# explicitly. Both transmitter and receiver must use the same channel.
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#
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espnow:
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channel: ${espnow_channel}
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enable_on_boot: true
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#:########################################################################################:#
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# Globals
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#:########################################################################################:#
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globals:
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- id: press_id
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type: uint32_t
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restore_value: false
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initial_value: '0'
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- id: transmit_payload
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type: std::string
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restore_value: false
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initial_value: '""'
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#:########################################################################################:#
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# ESP-NOW Transmission Script
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#:########################################################################################:#
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script:
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- id: send_espnow_press
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mode: single
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then:
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 1 of 3."
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- espnow.broadcast:
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data: !lambda |-
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 1 submitted successfully."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 1 reported an error."
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- delay: 75ms
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 2 of 3."
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- espnow.broadcast:
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data: !lambda |-
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 2 submitted successfully."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 2 reported an error."
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- delay: 75ms
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- logger.log:
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level: INFO
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format: "Sending ESP-NOW broadcast 3 of 3."
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- espnow.broadcast:
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data: !lambda |-
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return std::vector<uint8_t>(
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id(transmit_payload).begin(),
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id(transmit_payload).end()
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);
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wait_for_sent: true
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continue_on_error: true
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on_sent:
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- logger.log:
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level: DEBUG
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format: "Broadcast 3 submitted successfully."
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on_error:
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- logger.log:
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level: WARN
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format: "Broadcast 3 reported an error."
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- delay: 75ms
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#:########################################################################################:#
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# Deep Sleep and GPIO4 Wake
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#:########################################################################################:#
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#
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# ESP32-S3 supports EXT1 ANY_LOW wake.
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#
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# With one configured pin, ANY_LOW means:
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# Wake when GPIO4 is pulled LOW.
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#
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# An external 10 kΩ pull-up between GPIO4 and 3.3 V is recommended.
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#
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deep_sleep:
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id: deep_sleep_control
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esp32_ext1_wakeup:
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pins:
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- GPIO${wake_gpio}
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mode: ANY_LOW |