Other Parts Discussed in Thread: BQSTUDIO, , EV2400, BQ27427
Tool/software:
We are unable to see a BQ27427EVM connected to an EV2400 on bqStudio.
The EV2400 firmware has been updated to version 0.32.
First we tried with bqStudio version 1.3.101 but when the device type selection list is displayed under “Auto Detect Device” it shows “None”, if we select “Gauge” and press "Next" the BQ27427 is not shown on the device list.
After installing the beta version 1.3.128 it still shows “None” on the “Auto Detect Device” but when launching the app now when we select “Gauge” on the device type list the BQ27427 is shown as an option, however if we select it and press “Finish” leaving the address as “Default” we get an alert saying that the detected device is not compatible with the application and analyzing the I2C bus with an oscilloscope we can see several NACKed write attempts to address 0x0B (0x16 8 bit address). Since the BQ27427 address is 0x55 (0xAA 8 bit address) this is to be expected.
If we choose the address 0xAA we still see a few attempts to write to address 0x16 but they are followed by some writes/reads to address 0xAA, “427_2_2” is shown under “Auto Detect Device” and we get an “Device Type Missing” alert with the following message:
“Could not find the target bqz for the device. Please select the device type manually !!”
After pressing "Ok" on the alert, selecting “0427_2_02-bq27427.bqz” and pressing the “Finish” button we get another alert with the message “No Response at address 0xAA.”. On the I2C bus we see a write attempt to address 0x0B (0x16 8 bit address) followed by a write to address 0x55 (0xAA 8 bit address) with the values 0x22 0x3E where the last byte is not acknowledged.
Can you please let us know what we might be missing or other procedures that we might try?
