Back at an old job,  I was working on a new embedded system. It took us about a month before we bothered setting up UART for printf debugging. Fortunately the CPU&#x2F;devboard supported gdb out of the box. What we ended doing was having a global char pointer point to somewhere in the middle of the memoryspace, and we would log things by appending to that string. Then we could gdb in and print the contents of the string.