Hi, I'm interfacing a BMA423 with an nRF52810. The chip is working in i2c mode at address 0x18 (SDO line to GND). I'm using the API library provided at https://github.com/BoschSensortec/BMA423-Sensor-API The first time I ran the code, calling bma423_init() was successfully able to communicate with the chip and read the chip ID. But when calling bma423_write_config(), the chip accepted a few dozens of 8-byte chunks, but at some point, it stopped responding (doesn't ACK the I2C address or pulls the bus down anymore). Now bma423_init() fails every time. The worst part is that this situation is persistent. I couldn't get the chip to respond anymore. What I tried: I tried I2C address 0x19 or other commands with no luck. I hooked up a logic analyzer. The ACK bit after the I2C address and R/W bit is indeed 1 (NACK). No other signs of life at the other end. I reproduced the issue with another board. More info: SDA and SCL both seem to have the proper logic levels. INT1 and INT2 are both connected to 2 MCU pins configured as inputs The CSB pin is tied to VDD The chip is working at 3.3V The I2C bus is working at 100KHz It responded the first time until some point in the transmission of the config file (on both boards) and then seemingly locked up permanently. We're on a tight deadline so any support would be greatly appreciated. Thanks in advance, Mike
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