Hi team,
My customers having difficulties with MSP430F5359IPZ and I’d like to ask your advice. They are using I2C for communication but it is not working as expected.
The issue is, somehow SDA signal become continuously Low.
The trigger of this event is unknown. When this happens, SCL signal become continuously High.
The structure is, [Control board] – [level shifter for I2C] – [Device-A/ Device-B]. Device-A and Device-B are on the same path line. The communication destination determined by address setting. Both line are pulled up with 2.4kohm and communication speed is set as 100kHz. The pins used are 73 and 74.
Would somebody know the possible cause of this phenomena?
Best regards,
Kurumi Hasegawa