• Can't write on the control register during handler mode
    I am using TM4C development board and Uvision 4 IDE. During the context switch routine i need to store PSP value. When i use PSP symbol in the assembly code i have an error "error: A1647E: Bad register...
  • I can't write to 0x4004xxxx
    Hi! I'm new on ARM. I'm using uVision 4.71 with j-link + LPC1343 cortex-m3 running following code: movw r0,#0x0001 ;working ldr r1,=0x4004400c ;working str r0, [r1, #0] ;not working ...
  • Can't use DAC1 registers
    Hello, I'm not able to use DAC1 and DAC2 registers separately, everytime I build my project I get a warning message saying that "cmsis_iar.h" is obsolete so I can't download and debug because DAC1 gives...
  • Can't read/write to XDATA
    Can anyone help us? When can't get the right informations out of XDATA. We have tried to make a logo on a display, and first we placed all the displaydata in CODE (EPROM), and then the logo looks fine...
  • Can't write to ram for flash algorithms
    Hello, im' having some problems to write a flash using the ULINK and uVision3... Im using the AT91R40008 and the AT49BV322A flash... But when i try to full erase it(can't download as well) i get the...