mcbsp1 configures the serial port for digital loopback mode. We then use the CPU to write/read from the port. In loopback mode, we should read back the same value as written, which is checked for in a loop
File list:
mcbsp
....\mcbsp1
....\......\main_mcbsp1.c
....\......\mcbsp1.cmd
....\......\mcbsp1.pjt