Hi Shubham,
The codem for sending string may or maynot work depends on the compiler. Some compiler requires ” const char * “, like
“void UART_sendstring(const char *str)”.
Try to send a readable ascii character using UART_sendbyte(), like
UART_sendbyte(‘A’);
Also make sure that the serial port settings like the baud rate, start bit, stop bit etc. are same on both the sides.