TTGO SIM7000G upload issue
I have just received today a couple of your bords Lilygo T-SIM7000G.
I tried without success to load Arduino software inside the bord ans I got the following error message.
Serial port /dev/cu.usbmodem51850135541
Chip is ESP32-D0WD-V3 (revision 3)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
WARNING: Detected crystal freq 41.01MHz is quite different to normalized freq 40MHz. Unsupported crystal in use?
Crystal is 40MHz
A fatal error occurred: Failed to write to target RAM (result was 01070000)
A fatal error occurred: Failed to write to target RAM (result was 01070000)*
I am using Arduino IDE 1.8.16 on Mac OS Monterey and I have tried several type of board type in the IDE.
Could you tell me which type of board I have to select in the Arduino IDE or if there is a special action to be done to be successful .
With my best regards
@papbo You are using the MAC operating system. But dev/cu.usbmodem cannot burn programs. So please enable a setting to use the serial port burning function normally.
Then a new serial port /dev/tty.wchusbserialXXXX will be generated, you can select it and burn the program
Many thanks for your answer.
I have checked my "System preferences" and the "Mac App Store and Identified developers" was already my preferred choice.
And with this configuration, I can't load software into the T SIM7000G.
However I just moved the board to a Win 10 computer and there I can load the software.
I will investigate why the Mac is not doing the job.
Hello I have reinstalled the CH9102 driver and now it is ok to load software with the Mac.
The board is working fine.
Again many thanks for your advice.
@papbo Can you download firmware every time? It fails 95% on my environment.