Add esp-espnow_test_receiver.yaml
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ESPHome Device Builder
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#:########################################################################################:#
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# ESP-NOW Test Receiver
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#:########################################################################################:#
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#
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# DEVICE:
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# ESP32 DevKit V1 / ESP-WROOM-32
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#
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# VERSION:
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# 1.0 - 2026-07-11
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# - Initial ESP-NOW receiver test build.
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# - Receives broadcast packets from ESP32-S3-Zero transmitter.
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# - Publishes last sender MAC, payload, RSSI, received count and duplicate count.
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# - Creates a short Home Assistant event pulse for each unique press_id.
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#
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# NOTES:
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# - This device is the powered receiver.
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# - The transmitter should send the same packet 2-3 times for reliability.
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# - This receiver de-duplicates repeated packets using the full payload string.
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# - Expected test payload format from transmitter:
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# REMOTE_A:BUTTON_1:123
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#
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#:########################################################################################:#
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substitutions:
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device_name: espnow_test_receiver
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friendly_name: "ESPNow Test Receiver"
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area: "Test Bench"
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packages:
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network: !include common/network_common_dhcp.yaml
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esphome:
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name: ${device_name}
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friendly_name: ${friendly_name}
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area: ${area}
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esp32:
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board: esp32dev
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framework:
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type: arduino
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#:########################################################################################:#
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# ESP-NOW Receiver
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#:########################################################################################:#
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#
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# Do not set channel here while using Wi-Fi.
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# The receiver's ESP-NOW channel follows the connected Wi-Fi channel.
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#
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espnow:
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auto_add_peer: true
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on_broadcast:
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- then:
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- lambda: |-
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char src_mac[18];
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snprintf(src_mac, sizeof(src_mac), "%02X:%02X:%02X:%02X:%02X:%02X",
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info.src_addr[0], info.src_addr[1], info.src_addr[2],
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info.src_addr[3], info.src_addr[4], info.src_addr[5]);
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std::string payload(reinterpret_cast<const char *>(data), size);
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int rssi = info.rx_ctrl ? info.rx_ctrl->rssi : 0;
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id(last_sender_mac).publish_state(src_mac);
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id(last_payload).publish_state(payload);
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id(last_rssi).publish_state(rssi);
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id(received_count) += 1;
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id(received_count_sensor).publish_state(id(received_count));
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ESP_LOGI("espnow_rx", "ESP-NOW broadcast from %s, RSSI %d dBm, payload: %s",
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src_mac, rssi, payload.c_str());
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// Test payload format:
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// REMOTE_A:BUTTON_1:123
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//
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// For now, use the whole payload as the duplicate key.
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// This means the 2nd and 3rd repeated sends from one button press are ignored.
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if (payload == id(last_unique_payload)) {
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id(duplicate_count) += 1;
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id(duplicate_count_sensor).publish_state(id(duplicate_count));
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id(packet_is_unique) = false;
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ESP_LOGD("espnow_rx", "Duplicate ESP-NOW payload ignored: %s", payload.c_str());
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return;
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}
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id(last_unique_payload) = payload;
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id(packet_is_unique) = true;
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// Split simple colon-delimited payload for HA visibility.
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size_t first_colon = payload.find(':');
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size_t second_colon = payload.find(':', first_colon + 1);
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if (first_colon != std::string::npos && second_colon != std::string::npos) {
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std::string remote_id = payload.substr(0, first_colon);
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std::string button_id = payload.substr(first_colon + 1, second_colon - first_colon - 1);
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std::string press_id = payload.substr(second_colon + 1);
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id(last_remote_id).publish_state(remote_id);
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id(last_button_id).publish_state(button_id);
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id(last_press_id).publish_state(press_id);
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ESP_LOGI("espnow_rx", "Unique press: remote=%s button=%s press_id=%s",
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remote_id.c_str(), button_id.c_str(), press_id.c_str());
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} else {
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id(last_remote_id).publish_state("unknown");
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id(last_button_id).publish_state("unknown");
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id(last_press_id).publish_state("unknown");
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ESP_LOGW("espnow_rx", "Payload did not match expected format: %s", payload.c_str());
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}
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- if:
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condition:
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lambda: |-
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return id(packet_is_unique);
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then:
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- binary_sensor.template.publish:
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id: espnow_unique_press_event
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state: ON
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- script.execute: clear_unique_press_event
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#:########################################################################################:#
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# Globals
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#:########################################################################################:#
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globals:
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- id: received_count
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type: int
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restore_value: true
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initial_value: '0'
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- id: duplicate_count
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type: int
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restore_value: true
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initial_value: '0'
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- id: last_unique_payload
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type: std::string
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restore_value: true
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initial_value: '""'
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- id: packet_is_unique
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type: bool
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restore_value: false
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initial_value: 'false'
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#:########################################################################################:#
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# Scripts
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#:########################################################################################:#
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script:
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- id: clear_unique_press_event
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mode: restart
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then:
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- delay: 500ms
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- binary_sensor.template.publish:
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id: espnow_unique_press_event
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state: OFF
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#:########################################################################################:#
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# Home Assistant Entities
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#:########################################################################################:#
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text_sensor:
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- platform: template
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name: "Last Sender MAC"
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id: last_sender_mac
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icon: mdi:access-point-network
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- platform: template
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name: "Last Payload"
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id: last_payload
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icon: mdi:message-text
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- platform: template
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name: "Last Remote ID"
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id: last_remote_id
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icon: mdi:remote
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- platform: template
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name: "Last Button ID"
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id: last_button_id
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icon: mdi:gesture-tap-button
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- platform: template
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name: "Last Press ID"
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id: last_press_id
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icon: mdi:identifier
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sensor:
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- platform: template
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name: "Last RSSI"
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id: last_rssi
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unit_of_measurement: "dBm"
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accuracy_decimals: 0
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icon: mdi:wifi-strength-2
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- platform: template
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name: "Received Count"
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id: received_count_sensor
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accuracy_decimals: 0
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icon: mdi:counter
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- platform: template
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name: "Duplicate Count"
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id: duplicate_count_sensor
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accuracy_decimals: 0
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icon: mdi:counter
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binary_sensor:
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- platform: template
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name: "Unique Press Event"
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id: espnow_unique_press_event
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icon: mdi:gesture-tap-button
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button:
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- platform: template
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name: "Reset ESP-NOW Test Counts"
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icon: mdi:counter
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on_press:
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then:
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- lambda: |-
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id(received_count) = 0;
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id(duplicate_count) = 0;
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id(last_unique_payload) = "";
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id(received_count_sensor).publish_state(0);
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id(duplicate_count_sensor).publish_state(0);
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