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TE0741 Power Issue

Started by hossam84, November 12, 2020, 09:56:06 AM

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hossam84

Hello JH,

I have an issue with TE0741 module.
I am using two modules TE0741 and TE0715-04-30-1I with a custom baseboard. I flashed both modules.
For TE0741 it was working fine for long time then I noticed that the D4 LED is Blinking with a sequence of ~1Hz.
Once I start UART communication between TE0715 and TE0741, the Red LED D2 goes high and the operation is malfunctioning (Not working as expected).

I had same issue 5 days ago and I increased the current limit and increased the supply voltage a bit (from 5.1V to 5.3V) then it worked OK.
Today, I got the same issue as before and I tried to increase the supply voltage up to 5.5V but with no success.

Any suggestions will be appreciated?

Thanks in advance,
H.H.

hossam84

Solved,

It wasn't power issue. It was firmware issue in TE0741 that has some wrong response to some UART commands.

I fixed it after some debugging and make some steps backward.

Thanks,
H.H.