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ha-config/esphome/ble-gateway-2.yaml

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substitutions:
node_name: ble-gateway-2
friendly_name: Garden Shed BLE Gateway
esphome:
platform: ESP32
board: esp32dev
packages:
base: !include common/base.yaml
ble: !include common/ble-gateway.yaml
web_server:
version: 2
include_internal: true
wifi:
use_address: 10.10.30.82
# JDY-08
# https://amperkot.ru/static/3236/uploads/datasheets/JDY-08.pdf
# [13:44:48][I][ble_client:085]: Attempting BLE connection to 7c:01:0a:43:4e:9e
# [13:44:49][D][ble_client_lambda:035]: Connected to BLE device
# [13:44:49][I][ble_client:161]: Service UUID: 0xFFE0
# [13:44:49][I][ble_client:162]: start_handle: 0x1 end_handle: 0x9
# [13:44:49][I][ble_client:341]: characteristic 0xFFE1, handle 0x3, properties 0x1c
# [13:44:49][I][ble_client:341]: characteristic 0xFFE2, handle 0x7, properties 0x1c
# [13:44:49][I][ble_client:161]: Service UUID: 0x1800
# [13:44:49][I][ble_client:162]: start_handle: 0xa end_handle: 0x14
# [13:44:49][I][ble_client:341]: characteristic 0x2A00, handle 0xc, properties 0x2
# [13:44:49][I][ble_client:341]: characteristic 0x2A01, handle 0xe, properties 0x2
# [13:44:49][I][ble_client:341]: characteristic 0x2A02, handle 0x10, properties 0xa
# [13:44:49][I][ble_client:341]: characteristic 0x2A05, handle 0x17, properties 0x20
ble_client:
- mac_address: "7C:01:0A:43:4E:9E"
id: ph_260bd
on_connect:
then:
- wait_until: # wait until characteristic is discovered
lambda: |-
esphome::ble_client::BLEClient* client = id(ph_260bd);
auto service_uuid = 0xFFE0; // can't get it off `sensor` because it is protected
auto char_uuid = 0xFFE1; // can't get it off `sensor` because it is protected
esphome::ble_client::BLECharacteristic* chr = client->get_characteristic(service_uuid, char_uuid);
return chr != nullptr;
- lambda: |-
ESP_LOGD("ble_client_lambda", "Connected to PH-260BD");
//esphome::ble_client::BLESensor* sensor = id(ph_260bd_sensor);
esphome::ble_client::BLEClient* client = id(ph_260bd);
auto service_uuid = 0xFFE0; // can't get it off `sensor` because it is protected
auto char_uuid = 0xFFE1; // can't get it off `sensor` because it is protected
esphome::ble_client::BLECharacteristic* chr = client->get_characteristic(service_uuid, char_uuid);
if (chr == nullptr) {
ESP_LOGW("ble_client", "[0xFFE1] Characteristic not found. State update can not be written.");
} else {
unsigned char newVal[8] = {
0x00, 0x03, 0x00, 0x00,
0x00, 0x14, 0x44, 0x14
};
int status = esp_ble_gattc_write_char(
client->gattc_if,
client->conn_id,
chr->handle,
sizeof(newVal),
newVal,
ESP_GATT_WRITE_TYPE_NO_RSP,
ESP_GATT_AUTH_REQ_NONE
);
if (status) {
ESP_LOGW("ble_client", "Error sending write value to BLE gattc server, status=%d", status);
}
}
/*
decltype(v)::foo = 1; // debug type of v by mis-casting it and looking at compiler error
*/
on_disconnect:
then:
- lambda: |-
ESP_LOGD("ble_client", "Disconnected from PH-260BD");
sensor:
- platform: template
name: "Tent Reservoir EC (µS)"
id: ec_us
unit_of_measurement: "µS/cm"
accuracy_decimals: 0
state_class: measurement
icon: mdi:water-opacity
filters:
- filter_out: nan
- throttle: 30s
- platform: template
name: "Tent Reservoir Temperature"
id: temp
unit_of_measurement: "°C"
accuracy_decimals: 1
state_class: measurement
device_class: temperature
filters:
- filter_out: nan
- throttle: 30s
- platform: template
name: "Tent Reservoir pH"
id: ph
unit_of_measurement: "pH"
accuracy_decimals: 2
state_class: measurement
icon: mdi:ph
filters:
- filter_out: nan
- throttle: 30s
- platform: ble_client
ble_client_id: ph_260bd
id: ph_260bd_sensor
internal: true
service_uuid: FFE0
characteristic_uuid: FFE1
notify: true
# The PH-260BD puts bytes onto the characteristic value which needs to be treated as text:
#
# [1] pry(main)> ['372e35312070480d0a32312e372020e284830d0a'].pack('H*')
# => "7.51 pH\r\n21.7 \xE2\x84\x83\r\n"
# [2] pry(main)> puts ['372e35312070480d0a32312e372020e284830d0a'].pack('H*')
# 7.51 pH
# 21.7 ℃
#
# It alternates between putting the EC/TDS value alone (as a string, with units) and the pH and
# temperature together. Perhaps it can't fit all three in a single buffer.
#
# All values follow: number(s)/dot, space(s), unit, carriage return, new line
#
# This lambda parses the string and publishes each value+unit to the appropriate template sensor on each newline.
lambda: |-
ESP_LOGD("ble_client.receive", "value received with %d bytes: [%.*s]", x.size(), x.size(), &x[0]);
if (x.size() == 0) return NAN;
//decltype(parse_float)::foo= 1;
std::string val_str = "";
std::string val_unit = "";
// ESP_LOGD("ble_client.receive", "value received with %d bytes: [%.*s]", x.size(), x.size(), &x[0]);
// https://git.faked.org/jan/ph-260bd/-/blob/master/src/main.cpp#L7
static int factorMsToPpm = 700;
for (int i = 0; i < x.size(); i++) {
auto c = x[i];
switch(c) {
case '\x30': // "0"
case '\x31': // "1"
case '\x32': // "2"
case '\x33': // "3"
case '\x34': // "4"
case '\x35': // "5"
case '\x36': // "6"
case '\x37': // "7"
case '\x38': // "8"
case '\x39': // "9"
case '\x2E': // "."
val_str += c;
break;
case '\x20': // " "
break; // proceed until we hit units
case '\x0d': // '\r'
break; // ignore
case '\x0a': // '\n'
// FIXME: Don't publish temperature when ppt is set as it drops the first char
if (auto val = parse_number<float>(val_str)) {
if (val_unit == "pH") {
id(ph).publish_state(*val);
} else if (val_unit == "\xE2\x84\x83") { // ℃ char
id(temp).publish_state(*val);
} else if (val_unit == "uS") { // microsiemens
id(ec_us)->publish_state(*val);
} else if (val_unit == "mS") { // millisiemens
id(ec_us)->publish_state(*val * 1000);
} else if (val_unit == "ppm") { // TDS parts per million
id(ec_us)->publish_state(*val / factorMsToPpm * 1000);
} else if (val_unit == "ppt") { // TDS parts per thousand
id(ec_us)->publish_state(*val / factorMsToPpm * 1000 * 1000);
} else {
ESP_LOGW("ble_client.receive", "value received with unknown unit: [%s]", val_unit.c_str());
}
} else {
ESP_LOGW("ble_client.receive", "value could not be parsed as float: [%s]", val_str.c_str());
}
val_unit = "";
val_str = "";
break;
default:
val_unit += c;
}
}
return 0.0; // this sensor isn't actually used
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