[mc1322x] problems with the UART

[Jon Smirl]

Why won't this loop work without messing up the printout?
It gets 32 chars right and then messes up. 32 chars is the size of the FIFO.

		for (i = 0; i < 10; i++) {
			for (j = 'A'; j <= 'z'; j++) {
				reg32(UART1_DATA) = j;
				if (reg32(UT1CON) == 0) {  // stop when FIFO is full
					while (reg32(UT1CON) != 31) {   // wait for it to empty
					}
				}
			}
			reg32(UART1_DATA) = '\n';
		}

I get output like this, this case gets 39 chars right and then messes up.

ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghist
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgijtu
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgjkuv
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgjkvw
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgklwx
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefglmwx
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgmnxy
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgmnyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgnoz
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijopz
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghpq
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghipq
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghiqr
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghirs
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghist
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghist
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgijtu
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgijuv
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgjkvw
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefgklvw
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghilmwx
ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefglmxy



-- 
Jon Smirl
jonsmirl at gmail.com