hello everyone
i am struck in the marlin firmware & Printrboard AT90USB1286 controller
i already wasted week for solution ,my story is too long so i keep it to point & below are thing i did & occur problems
1: I damaged 16 MHz Printrboard on board resonator while removing (bad reason behind this), So I replace the resonator with the 16 MHz crystal oscillator with the 20 pf cap on Printrboard ,i did check frequency on xtal pin 1 of AT90USB1286 on dso it appears around 16 MHz.
2:so i set the fuse bits setting for oscillator and uploaded bootloader code on chip AT90USB1286
lfuse :0xFF hfuse: 0xDB efuse : 0xF3
Here is the problem no 1
3: Then i uploaded marlin firmware (code size around 85kbytes) which has defined lcd & encoder code definition (configuration .h)
and my printrboard shows com port in boot loader mode but it didn't show up com port in device manger in normal mode so i unable connect it to Pronterface
Here is the problem no 2
4: so i undefined the code of lcd & encoder in code(configuration.h) (code size around 50kbytes) and i uploaded that to printrboard it was showing and connecting with pronterface but my x ,y stepper motors running too slow while homing & i got the frequency around 230hz on step pin of driver
accroding to homing feedrate my frequency while homing should be around
= 79.95 (AXIS_STEPS_PER_UNIT ) * 80 ( HOMING_FEEDRATE)
= which is around 6 khz
but it appear 230 hz
and other (configuration.h) setting
below are my configuration setting
#define HOMING_FEEDRATE {80*60, 80*60, 0.5*60, 0}
#define DEFAULT_AXIS_STEPS_PER_UNIT {79.95,80.15,4035.5,513.59}
#define DEFAULT_MAX_FEEDRATE {80, 80, 0.75,10}
#define DEFAULT_MAX_ACCELERATION {4800,4800,45,600}
#define DEFAULT_ACCELERATION 3000
#define DEFAULT_RETRACT_ACCELERATION 3000
i hope i will get solution for this strange problem,
Thnx in advance
Edited 1 time(s). Last edit at 10/10/2013 09:08AM by sach00.
,,,Its arduino compiler problem