Codevision timer examples
The demo codeĪssumes that PORTB will be hooked to the LEDs on the STK500, PORTC to the Is set to 0x55 just before entering the debugger when button 1 is pushed.
#Codevision timer examples serial
Button 2 tests serial input to the target code. Some lights and enters the debugger at reset and when button 1 is pushed. Anyplace in your code you want to invoke the debugger, call debug(IDnumber).In the Project.Configure dialog set the Data Stack size toĢ00 and the clock speed to the correct crystal value.No problem but you may want to add a line #asm("cli") The MCU enters main with interrupts turned on.Delete the mega32.h include and stdio.h includes There are only a few changes that have to be made to the target C programĬode.
A version which compiles in 1.23.8 is linked in a section below. Note that the debugger code has compiler-version dependencies! The dependencies occur because local variables are stored in specific ways in different compiler versions and the variables have to be manipulated directly in assembler. SRAM overhead is about 800 bytes, so the debugger is not useful for data-hungry Is zero (At RESET time the debugger runs briefly to set up its structures). Debugger time overhead when running the target application The program memory used for the debugger is aboutģk words of flash. How successful the attempt is remains to be seen (stay Was to make a system in which a student could debug any C program with very A simplified version of aOS was constructed to act as a debugger.