Assembler to C code

PabloA — Thu, 13 Sep 2012 18:49:57 GMT

Hi there, please could somebody help me with this code in Assembler? I have to translate it to C code. It works fine in CodeWarrior for 8 bits microcontrollers, but with ColdFire it don't acept this asm instructions.

The idea is to control an LCD display with just 4 bits of data. To do this I have to Swap Display 8 bits data and write the higher nible first.

char Display_Data;

char PTAD_Data;

asm

{

LDA PTAD

AND #0b11110000 // Mask Non Display Data

STA PTAD_Data

LDA Display_Data // Load Display Data

NSA // Set Most Significant Nible First

AND #0b00001111 // Clear "Shift_Comp_Data" Bits

ORA PTAD_Data

STA PTAD // Set Display Data

}

Thanks!

Pablo

Re: Assembler to C code

kef — Fri, 14 Sep 2012 04:13:22 GMT

PTAD_Data = PTAD & 0xF0;

PTAD = ((Display_Data >> 4) & 0x0F) | PTAD_Data;

Re: Assembler to C code

PabloA — Fri, 14 Sep 2012 13:14:24 GMT

Edward, Thank you for your time. I will use it!

Best regards!

Pablo

topic Re: Assembler to C code in ColdFire/68K Microcontrollers and Processors

Assembler to C code

Re: Assembler to C code

Re: Assembler to C code