ATC_MiThermometer

Initial forked from https://github.com/atc1441/ATC_MiThermometer

(Thanks @atc1441 for initial parsing and js code for OTA)

Custom Firmware Version 1.1 Original Firmware v1.0.0_0106

Average consumption:

• Default settings (Advertising interval of 2.5 seconds, the measurement interval 10 sec):

• Advertisement: 15.5 uA
• Connection: 15..17 uA

Advertising in 4 formats:

1. UUID 0x181A - size 16: atc1441 format
2. UUID 0x181A - size 19: custom - temperature x0.01C, humidity x0.01%, battery charge level 0..100%, battery voltage in mV, GPIO-pin flags (mark “reset”) and triggers.
3. UUID 0xFE95 - 0x0A: Xiaomi - battery charge level 0..100%, battery voltage in mV
4. UUID 0xFE95 - 0x0D: Xiaomi - temperature x0.1C, humidity x0.1%

++ Configuring mode of transferring everything in turn

In Connection mode:

• PrimaryService - Environmental Sensing Service (0x181A):

• Characteristic UUID 0x2A1F - Notify temperature x0.1C
• Characteristic UUID 0x2A6E - Notify temperature x0.01C
• Characteristic UUID 0x2A6F - Notify about humidity x0.01%

• PrimaryService - Battery Service (0x180F):

• Characteristic UUID 0x2A19 - Notify the battery charge level 0..99%

• PrimaryService (0x1F10):

• Characteristic UUID 0x1F1F - Notify, frame id 0x33 (сonfiguring or making a request): temperature x0.01C, humidity x0.01%, battery charge level 0..100%, battery voltage in mV, GPIO-pin flags and triggers.

OTA and Custom Setup

TelinkMiFlasher.html

Reading Measurements in Connected Mode

GraphAtc.html GraphAtc1.html GraphAtc2.html

Reading Measurements in Advertising Mode (experimental web platform features)

Advertising.html

Temperature or humidity trigger on GPIO PA5 (label on the "reset" pin)

Hysteresis:

• =0 off,
• if less than zero - activation on decrease,
• if more than zero - activation on excess

Setting the pin to "1" or "0" works if both hysteresis are set to zero (TRG off).

Interface for receiving and displaying data on the LCD.

• LCD shows:
• Big number: -99.5..1999.5
• Small number: -9..99
• Smiley, battery, degrees
• Setting the display time limit in sec

The USB-COM adapter writes the firmware in explorer. Web version.

• Connect only TX-SWS and GND wires.

USBCOMFlashTx.html

Building firmware:

1. Go to wiki.telink-semi.cn and getting IDE for TLSR8 Chips.
2. Clone https://github.com/Ai-Thinker-Open/Telink_825X_SDK
3. Install IDE and export the 'ATC_MiThermometer' project.
4. Change 'Linked resousrce' and 'C/C++ Build/Build command'. Compile.

BoardPinout

Original Full Flash v1.0.0_0106 (512 KB)

Build Telink EVK on E104-BT10-G/N module (TLSR8269)

Alternative programmer TLSR SWire on module TB-04/03F or E104-BT10

Additional information on the format Advertising for Xiaomi LYWSD03MMC

Reading and recovering Mi-Home keys

HTML files

Forum link (russian)