Hi!
I am writing data to the ANT7-T ST25DV04K module from my mobile phone using an app. Now I would like to read that data stored in the ANT7-T ST25DV04K module with a microcontroller. The idea is to make a simple program that only reads the data from the module. What commands should I send to read its stored data?
Hello,
The ANT7 board does not require anything special on the START bit, it is perfectly in the I2C specification, so I see no reason why it should be different from any other I2C device on this START condition...
The problem looks to be more on the microcontroller side, since there is no action from the ANT7 part in the START bit. I'm sorry, but I'm not aware of how TI microcontroller works, so it is difficult for me to help. You may contact TI support for help on the MSP micro.
One idea: is there pull-up resistors on the I2C bus on your microcontroller board ?
The I2C bus requires pull-up resistors on the SDA and SCL signals. Those pull-up are not present on the ANT7 board, and must be added externally.
So may be your microcontroller board doesn't have those pull-up resistors, which may explain your problem with START condition (and may be other boards you tested do have those pull-ups, which explains why they work)
Best regards.
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