Other Parts Discussed in Thread: EV2400,
Tool/software:
Hello, I am powering BQ76972 with 48V total stack, 3.0V per cell and communicating over I2C with the EV2400 module. I am externally powering REG1 with 3.3V while I try to program the BQ76972. I am able to read all the cell voltages correctly, so I believe I have active communication with the BQ76972. I am simply trying to set REG1 and REG2 to be enabled and both be 3.3V.
I am trying to set REG12 to 0xDD, and REG0 to 0x01. This should enable both and set the each LDO to 3.3V.
However, I will write both of these registers to the BQ, and both DO NOT get enabled.
I have upgraded the EV2400 FW to the latest (v0.32).
Are there specific steps that I am missing? I have UNSEALED the BQ and SET_CFGUPDATE.
REGIN stays at 3.0V the whole time.
