Other Parts Discussed in Thread: BQSTUDIO, , EV2400
Tool/software:
Hello,
I have issues with the communication of my new bq40z80 design. I can connect to bqstudio via a EV2400 and send commands but the bq40z80 only responds sporadically. I get error messages in bq studio like "No acknowledge from device" or "Timeout or unexpected response communicating with device". When I try to program chemistry, it starts and shows the progress bar, but the I get a pop up window with "Chemistry programming failed! Error code = 772" and in the bottom it says "Chemistry programming Error : No acknowledge from device". I also cant update firmware becaus it says the same. When I try to program data memory it says "Operation failed because initial read of all data flash failed".Once every few attempts however it works and I can activate the LEDs or even read the Chem ID I tried to program. I even installed an external wakeup button which helped me get connected to bqstudio at all, but doesnt help me with this issue.
The schematics should be the same as in the EVM except for part E3 and E4 which I dont know what they are.
I attached pictures of my setup and schematics.
I hope you can help.
BR
Sensoy
