I have reviewed the UART Echo Back code and searched the forum for this question, but didn't find an answer.
How do I use the UART Echo Back code to get several answers from the user.
for example; (1) xmitUARTmessage sends message to user
(2) user responds with one of the choices
(3) repeat steps 1 and 2 to get all configuration data
Press 1 to calculate area of circle
Press 2 to calculate area of square
Enter your choice
Need to stop ISR, transmit another message and get the response.