esphome:
  name: uart-mock-modbus-server-test

host:
api:
logger:
  level: VERBOSE

external_components:
  - source:
      type: local
      path: EXTERNAL_COMPONENT_PATH

# Dummy uart entry to satisfy modbus's DEPENDENCIES = ["uart"]
# The actual UART bus used is the uart_mock component below
uart:
  baud_rate: 115200
  port: /dev/null

uart_mock:
  - id: virtual_uart_dev
    baud_rate: 9600
    rx_full_threshold: 120
    rx_timeout: 2
    auto_start: false
    debug:
    injections:
      - delay: 100ms
        inject_rx: [0x01, 0x03, 0x00, 0x03, 0x00, 0x01, 0x74, 0x0A] #  Read holding register 3 on device 1 (basic_read)
      - delay: 100ms
        #  Read holding register 7 on device 2
        #  Reply from device 2
        #  Read holding register 5 on device 1 (read_after_peer_response)
        inject_rx:
          [
            0x02,
            0x03,
            0x00,
            0x07,
            0x00,
            0x01,
            0x35,
            0xF8,
            0x02,
            0x03,
            0x02,
            0x00,
            0xF0,
            0xFC,
            0x00,
            0x01,
            0x03,
            0x00,
            0x05,
            0x00,
            0x01,
            0x94,
            0x0B,
          ]
      - delay: 100ms
        inject_rx: [0x02, 0x03, 0x00, 0x07, 0x00, 0x01, 0x35, 0xF8] #  Read holding register 7 on device 2, with no response
      - delay: 100ms
        #  Read holding register 7 on device 2, with no response
        #  Read holding register A on device 1 (read_after_peer_timeout)
        inject_rx:
          [
            0x02,
            0x03,
            0x00,
            0x07,
            0x00,
            0x01,
            0x35,
            0xF8,
            0x01,
            0x03,
            0x00,
            0x0A,
            0x00,
            0x01,
            0xA4,
            0x08,
          ]

modbus:
  uart_id: virtual_uart_dev
  role: server

modbus_server:
  - address: 1
    registers:
      - address: 0x03
        value_type: U_WORD
        read_lambda: |-
          id(basic_read).publish_state(1);
          return 1;
      - address: 0x05
        value_type: U_WORD
        read_lambda: |-
          id(read_after_peer_response).publish_state(1);
          return 1;
      - address: 0x0A
        value_type: U_WORD
        read_lambda: |-
          id(read_after_peer_timeout).publish_state(1);
          return 1;

sensor:
  - platform: template
    name: "basic_read"
    id: basic_read
  - platform: template
    name: "read_after_peer_response"
    id: read_after_peer_response
  - platform: template
    name: "read_after_peer_timeout"
    id: read_after_peer_timeout

button:
  - platform: template
    name: "Start Scenario"
    id: start_scenario_btn
    on_press:
      - lambda: "id(virtual_uart_dev).start_scenario();"