Here’s my bare bones “yaml only” version.
People getting started can try this as a basic implementation if they like, and move over to yours for more advanced features.
Feel free to borrow the pics etc. I would have done it with a D1 mini to keep it simple for people but my d1 mini’s are dodgy and I had a spare C3.
Config
# You probably won't need the stuff under platformio_options: and framework: , I'm just using a weird board.
esphome:
name: "jiecang-desk-controller-rj12-c3"
friendly_name: Desk Controller RJ12 C3
comment: Desk Controller for Jiecang Controllers via RJ12 port
platformio_options:
board_build.flash_mode: dio
on_boot:
priority: 0
then:
- button.press: cmdFetchHeightValue # Request height on boot.
esp32:
board: esp32-c3-devkitm-1
framework:
type: esp-idf
sdkconfig_options:
CONFIG_BT_BLE_42_FEATURES_SUPPORTED: y
CONFIG_BT_BLE_50_FEATURES_SUPPORTED: y
CONFIG_ESP_TASK_WDT_TIMEOUT_S: "10"
variant: ESP32C3 # lolin c3 pico pinout | https://arduino-projekte.info/wp-content/uploads/2023/01/Wemos-Lolin-C3-Pico-Pinout.webp
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
manual_ip:
static_ip: 192.168.1.XXX # I like to set static IPs.
gateway: 192.168.1.1
subnet: 255.255.255.0
api:
ota:
logger:
level: VERBOSE # Required for uart debug messages.
uart:
tx_pin: GPIO21
rx_pin: GPIO20
baud_rate: 9600
debug:
direction: BOTH
dummy_receiver: true
after:
delimiter: [0x7E]
# timeout: 5ms
sequence:
# Use mulcmu's method for reading uart without a custome component: https://community.home-assistant.io/t/how-to-uart-read-without-custom-component/491950?u=mahko_mahko
- lambda: |-
UARTDebug::log_int(direction, bytes, ','); // Log the message as int. Good for height message checks.
UARTDebug::log_hex(direction, bytes, ','); // Log the message in hex. Good for checking against protocol documentation.
ESP_LOGD("custom", "Bytes size: %d", bytes.size()); // Logs how many bytes in the message, useful for protocol and message identification.
if (direction == UART_DIRECTION_RX)
{
if (bytes.size() == 9) // Only parse messages with 9 bytes.
{
// Do some validation that it is a height message by checking some bytes.
if (bytes[0] == 0xF2 && bytes[1] == 0xF2 && bytes[2] == 0x01 && bytes[8] == 0x7E)
{
int height = (bytes[4] * 256) + bytes[5];
id(desk_height).publish_state(height);
}
}
}
sensor:
- platform: template
name: "Desk Height"
id: desk_height
update_interval: never
- platform: uptime
icon: mdi:sort-clock-descending
name: Uptime
id: uptime_sensor
update_interval: 5s
accuracy_decimals: 0
unit_of_measurement: s
number:
- platform: template
name: "Go To Height cm"
id: go_to_height_value
optimistic: true
min_value: 80.0
max_value: 250.0
step: 0.1
button:
- platform: uart
id: "cmdStop"
name: "Stop"
data: [0xF1, 0xF1, 0x2B, 0x00, 0x2B, 0x7E]
# Memory Presets
- platform: uart
id: "cmdGotoMemory1"
name: "Go To Memory 1"
data: [0xF1, 0xF1, 0x05, 0x00, 0x05, 0x7E]
- platform: uart
id: "cmdGotoMemory2"
name: "Go To Memory 2"
data: [0xF1, 0xF1, 0x06, 0x00, 0x06, 0x7E]
- platform: uart
id: "cmdGotoMemory3"
name: "Go To Memory 3"
data: [0xF1, 0xF1, 0x27, 0x00, 0x27, 0x7E]
- platform: template
name: "Go to specific height X"
on_press:
then:
- uart.write:
data: !lambda |-
float height_cm = id(go_to_height_value).state;
int height_mm = static_cast<int>(height_cm * 10); // Convert cm to mm
std::vector<uint8_t> bArr(8);
bArr[0] = 0xF1;
bArr[1] = 0xF1;
bArr[2] = 0x1B;
bArr[3] = 0x02;
bArr[4] = static_cast<uint8_t>(height_mm / 256);
bArr[5] = static_cast<uint8_t>(height_mm % 256);
bArr[6] = static_cast<uint8_t>((bArr[2] + bArr[3] + bArr[4] + bArr[5]) % 256); // Calculate checksum
bArr[7] = 0x7E;
return bArr;
- platform: uart
id: "cmdDown"
name: "Nudge Down"
data: [0xF1, 0xF1, 0x02, 0x00, 0x02, 0x7E]
- platform: uart
id: "cmdUp"
name: "Nudge Up"
data: [0xF1, 0xF1, 0x01, 0x00, 0x01, 0x7E]
- platform: uart
id: "cmdMemory1"
name: "Set Memory 1"
data: [0xF1, 0xF1, 0x03, 0x00, 0x03, 0x7E]
- platform: uart
id: "cmdMemory2"
name: "Set Memory 2"
data: [0xF1, 0xF1, 0x04, 0x00, 0x04, 0x7E]
- platform: uart
id: "cmdMemory3"
name: "Set Memory 3"
data: [0xF1, 0xF1, 0x25, 0x00, 0x25, 0x7E]
- platform: uart
id: "cmdFetchHeightValue"
name: "Fetch Height Value"
data: [0xF1, 0xF1, 0x07, 0x00, 0x07, 0x7E]
# If you need anything more than the above you should probably move across to another method / project.
# - platform: uart
# id: "cmdFetchAllTime"
# name: "Fetch All Time"
# data: [0xF1, 0xF1, 0xAA, 0x00, 0xAA, 0x7E]
# - platform: uart
# id: "cmdFetchHeightRange"
# name: "Fetch Height Range"
# data: [0xF1, 0xF1, 0x0C, 0x00, 0x0C, 0x7E]
# - platform: uart
# id: "cmdFetchHeightValue"
# name: "Fetch Height Value"
# data: [0xF1, 0xF1, 0x07, 0x00, 0x07, 0x7E]
# - platform: uart
# id: "cmdFetchHighestLowestLimit"
# name: "Fetch Highest Lowest Limit"
# data: [0xF1, 0xF1, 0x20, 0x00, 0x20, 0x7E]
# - platform: uart
# id: "cmdFetchStandTime"
# name: "Fetch Stand Time"
# data: [0xF1, 0xF1, 0xA6, 0x01, 0xA7, 0x7E]
# - platform: uart
# id: "cmdPatch"
# name: "Patch"
# data: [0xF1, 0xF1, 0xA0, 0x00, 0xA0, 0x7E]
