Confirm register is written November 03, 2021, 12:34:01 am Hello Dangerous Prototypes Forum,I have recently acquired a bus pirate, which I'm using to communicate with a custom device over i2c. My device uses 1.2V, so the bus pirate is connected to a level converter (https://www.sparkfun.com/products/15439).This is my first time communicating with a device via i2c, so I'm not sure if I'm doing it correctly. I have a list of registers for the device which need to be set to some value. Using the 7bit address search macro, I can see my device address:Code: [Select]0xE4(0x72 W) 0xE5(0x72 R)To set a register value, I'm using this command:Code: [Select][0xE4 0x1F 0x55]which as I understand should set the value of register 0x1F of my device to 0x55. Is this correct?To confirm that the register has been written, I use this command:Code: [Select][0xe4 0x1f [0xE5 r]and get this output:Code: [Select]I2C START BITWRITE: 0xE4 ACK WRITE: 0x1F ACK I2C START BITWRITE: 0xE5 ACK READ: 0x00 NACKI2C STOP BITwhich I'm interpreting to mean that the register has not been written.Is my syntax correct? Am I writing/reading correctly? If my commands look correct, that would help me determine if the problem is with the custom device and not with me.Thank you for your assistance.