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Add support for Xiaomi BLE Scale V1 and V2

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All the rights and effort are from @tsunglung.
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tiagofreire-pt 2019-08-10 12:51:29 +01:00 committed by GitHub
parent 11e88019c2
commit cfcc4a4486
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1 changed files with 69 additions and 17 deletions
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86
esphome/components/xiaomi_ble/xiaomi_ble.cpp
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@ -9,6 +9,34 @@ namespace xiaomi_ble {
static const char *TAG = "xiaomi_ble";
bool parse_xiaomi_data_byte(uint8_t data_type, const uint8_t *data, uint8_t data_length, XiaomiParseResult &result) {
if (result.type == XiaomiParseResult::TYPE_MISCALE) {
switch(data_type) {
case 0x00:{
const uint16_t weight = uint16_t(data[1]) | (uint16_t(data[2]) << 8);
if (data[0] == 0x22 || data[0] == 0xa2)
result.weight = weight * 0.01f / 2.0f;
else if (data[0] == 0x03 || data[0] == 0xb2)
result.weight = weight * 0.01f * 0.453592;
else
return false;
return true;
}
case 0x01: {
const uint16_t weight = uint16_t(data[11]) | (uint16_t(data[12]) << 8);
if (data[0] == 0x02)
result.weight = weight * 0.01f / 2.0f;
else if (data[0] == 0x03)
result.weight = weight * 0.01f * 0.453592;
else
return false;
return true;
}
}
return false;
}
switch (data_type) {
case 0x0D: { // temperature+humidity, 4 bytes, 16-bit signed integer (LE) each, 0.1 °C, 0.1 %
if (data_length != 4)
@ -69,40 +97,60 @@ optional<XiaomiParseResult> parse_xiaomi(const esp32_ble_tracker::ESPBTDevice &d
return {};
}
if (!device.get_service_data_uuid()->contains(0x95, 0xFE)) {
if (!device.get_service_data_uuid()->contains(0x95, 0xFE) and !device.get_service_data_uuid()->contains(0x1D, 0x18) and !device.get_service_data_uuid()->contains(0x1B, 0x18))) {
// ESP_LOGVV(TAG, "Xiaomi no service data UUID magic bytes");
return {};
}
const auto *raw = reinterpret_cast<const uint8_t *>(device.get_service_data().data());
if (device.get_service_data().size() < 14) {
if (device.get_service_data().size() < 9) {
// ESP_LOGVV(TAG, "Xiaomi service data too short!");
return {};
}
bool is_mijia = (raw[1] & 0x20) == 0x20 && raw[2] == 0xAA && raw[3] == 0x01;
bool is_miflora = (raw[1] & 0x20) == 0x20 && raw[2] == 0x98 && raw[3] == 0x00;
bool is_miscale = raw[3] == 0xE3 && raw[4] == 0x07 && raw[5] == 0x08;
bool is_mibfs = raw[2] == 0xE3 && raw[3] == 0x07 && raw[4] == 0x08;
if (!is_mijia && !is_miflora) {
if (!is_mijia && !is_miflora && !is_miscale && !is_mibfs) {
// ESP_LOGVV(TAG, "Xiaomi no magic bytes");
return {};
}
uint8_t raw_offset = is_mijia ? 11 : 12;
const uint8_t raw_type = raw[raw_offset];
const uint8_t data_length = raw[raw_offset + 2];
const uint8_t *data = &raw[raw_offset + 3];
const uint8_t expected_length = data_length + raw_offset + 3;
const uint8_t actual_length = device.get_service_data().size();
if (expected_length != actual_length) {
// ESP_LOGV(TAG, "Xiaomi %s data length mismatch (%u != %d)", type, expected_length, actual_length);
return {};
}
bool success;
XiaomiParseResult result;
result.type = is_miflora ? XiaomiParseResult::TYPE_MIFLORA : XiaomiParseResult::TYPE_MIJIA;
bool success = parse_xiaomi_data_byte(raw_type, data, data_length, result);
if (is_mijia || is_miflora) {
uint8_t raw_offset = is_mijia ? 11 : 12;
const uint8_t raw_type = raw[raw_offset];
const uint8_t data_length = raw[raw_offset + 2];
const uint8_t *data = &raw[raw_offset + 3];
const uint8_t expected_length = data_length + raw_offset + 3;
const uint8_t actual_length = device.get_service_data().size();
if (expected_length != actual_length) {
// ESP_LOGV(TAG, "Xiaomi %s data length mismatch (%u != %d)", raw_type, expected_length, actual_length);
return {};
}
result.type = is_miflora ? XiaomiParseResult::TYPE_MIFLORA : XiaomiParseResult::TYPE_MIJIA;
success = parse_xiaomi_data_byte(raw_type, data, data_length, result);
} else {
const uint8_t *data = &raw[0];
const uint8_t data_length = 2;
result.type = XiaomiParseResult::TYPE_MISCALE;
if (device.get_service_data_uuid()->contains(0x1B, 0x18) && !is_mibfs) {
const uint8_t raw_type = 0x0;
success = parse_xiaomi_data_byte(raw_type, data, data_length, result);
} else {
const uint8_t raw_type = 0x1;
success = parse_xiaomi_data_byte(raw_type, data, data_length, result);
}
}
if (!success)
return {};
return result;
@ -113,7 +161,7 @@ bool XiaomiListener::parse_device(const esp32_ble_tracker::ESPBTDevice &device)
if (!res.has_value())
return false;
const char *name = res->type == XiaomiParseResult::TYPE_MIFLORA ? "Mi Flora" : "Mi Jia";
const char *name = res->type == XiaomiParseResult::TYPE_MIFLORA ? "Mi Flora" : (res->type == XiaomiParseResult::TYPE_MIJIA ? "Mi Jia": "Mi Scale");
ESP_LOGD(TAG, "Got Xiaomi %s (%s):", name, device.address_str().c_str());
@ -136,6 +184,10 @@ bool XiaomiListener::parse_device(const esp32_ble_tracker::ESPBTDevice &device)
ESP_LOGD(TAG, " Moisture: %.0f%%", *res->moisture);
}
if (res->weight.has_value()) {
ESP_LOGD(TAG, " Weight: %.1fkg", *res->weight);
}
return true;
}