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LHT65 Temperature & Humidity sensor 47 / 56
AT+SYNCMOD: Get or Set time synchronization method
AT+SYNCTDC: Get or set time synchronization interval in day
AT+PID: Get or set the PID
6.2 How to upgrade the firmware?
The LHT65 is shipped with a program cable, which is used to upload image to LHT65 for:
✓ Support new features
✓ For bug fix
✓ Change LoRaWAN bands.
Video Instruction is here: https://youtu.be/0xpSWTCuDGQ
The latest firmware and changelog can be found at below link:
http://www.dragino.com/downloads/index.php?dir=LHT65/Firmware/
Below shows the hardware connection for how to upload an image to the LHT65:
Note:
1) There are different version ST-Link v2. The white one as below is the most stable and
recommended one.
2) The white version ST-Link v2 such as below photo has different hardware version. The original
one doesn’t have 3.3v on pin 1/2 and the clone one has 3.3v on pin 1/2. User has to short pin19
(VDD 3.3v) and pin 1/2 (TVCC) for the original one so pin 1/2 has 3.3v power. Otherwise, the
original one will have problem to upload firmware to LHT65.
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