Hello Bruce Thanks for the suggestion. I shall update the code with the ring buffer to store the received characters. I tried Transmitting the values(string) and receive the same through Rx interrupt. So i guess the board Tx and Rx are working fine. I am having problem receiving the values when connection between Tx of GSM and Rx of MSP432 are connected using Tx and Rx pins( it is connected to common ground too). Are there any points to consider while considering the connection between TTL of GSM and TTL of MSP432?? Thanks Nanda
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