Hello everyone
I tried to write a C code using uvision but at the very beginning I got a problem with my declaration.
I want to use sbit to address a single bit.
My problem is that uvision won't accept my code and marks it red. I couldn't find anything to fix this problem.
I am not sure if I missed any lines or forgot include files. Would be great if someone could give me a hint to fix that.
Also the Build Output window shows errors: error C146: 'P1_0': invalid base address error C202: 'led': undefined identifier
My code is really simple at the moment but this shouldn't be the problem.
#include<REGX51.h>
sbit led = P1_0;
void main(void){
while(1){
led=1;
led=0; } }
REGX51.h /*------------------------------------------------ P1 Bit Registers ------------------------------------------------*/ sbit P1_0 = 0x90; sbit P1_1 = 0x91; sbit P1_2 = 0x92; sbit P1_3 = 0x93; sbit P1_4 = 0x94; sbit P1_5 = 0x95; sbit P1_6 = 0x96; sbit P1_7 = 0x97;
Thanks Alex
Wouldn't this have a better chance of being syntactically correct?
Definitely worth reading the below to get that Keil addition syntax totally correct.
http://www.keil.com/support/man/docs/c51/c51_le_sbit.htm