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BQ76PL455EVM: No response from the board (GUI, terminal commands)

Part Number: BQ76PL455EVM

Hello,

I'm trying to launch BQ76PL455EVM. There is a list of configure options that I used - pretty based on advices in related topics:

1. Board supplied with 16S battery pack, tried with the GUI (GUI unable to open serial port)

2. Board supplied with 30V between BAT0 and BAT16 with the GUI (GUI unable to open serial port)

3. Board supplied with 16S battery pack, tried with commands via Matlab/Putty (no response on board Tx)

4. Board supplied with 30V between BAT0 and BAT16 tried with commands via Matlab/Putty (no response on Tx board connector)

GUI was tested on different systems (including Windows Xp/7/8/10 and x86/x64)

Here's an example Matlab code:

s = serial('COM4');
set(s,'BaudRate',250000,'Parity','none', 'Timeout', 1, 'TimerPeriod', 1);
fopen(s);
command ='89 01 00 0A 00 DA 83';
fwrite(s,command);
fscanf(s)

Here's board view and scope pictures with command send via Matlab on Rx board connector:

I'd be gratefull for any advice.

Greetings

  • Hi user5855771,

    If you are not already aware we have an EVM user's guide here: www.ti.com/.../sluuba7a.pdf

    Lets focus on debugging functionality with the GUI first. Is the D22 LED lighting up? Do you see Rx signals when using the GUI?

    A few things to try:
    1) Please check that you are following all of Section 7.1 especially where it explains how to set up the GUI with the correct COM port.
    2) Check FTDI drivers are downloaded for USB com port www.ftdichip.com/.../VCP.htm
    3) Measure the cell voltages at the IC pins and other power rails

    Regards,

    Taylor