Hi everyone! I am using LPC2468 microcontroller for my project. I am serially programming via MAX3232 with UART0. Also I have to see log messages on PC via serial port and for that I am using UART0 only. But the Comport Tool kit(software which I use to view log messages on PC) window shows garbage values..
I checked that the baud rates are matching or not but they were matching.. (115200)... So my doubt is can I use UART0 for both ISP purpose and for Log message viewing..? Also, do I need to take out the ISP jumper while UART0 is not programming but dealing with log messages..? (ISP jumper is used for giving a low level to ISP oin of uC so that it comes to know that now program is being loaded... )
Thanks Per! Thanks very much for the CRO idea.. I will once again check the baudrate.. Hope that will solve the problem..
Yes, UART0 can be used for both.
It's only when the processor boots that it samples your jumper to figure out if it should stay in the ISP-capable boot loader, or start your program.
Are you _really_ sure you have correct baudrate? Have you used an oscilloscope and checked length of bits sent out from both sides?
View all questions in Keil forum