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here is a code for a digital clock displayed in 6 7seg i developed it few weeks ago
makes sure to insert some delay between each display
/*******************************************************************/
void prepareCount(unsigned int decimal){
unsigned char hours,min,sec;
unsigned int...
Re: what is the difference between unsigned char and unsigned int in 8051 kiel compil
I tried this one before and it worked fine ...... i just want to figure out and learn why this happens when i declare it as a local variable
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i noticed that when i declare it as a global...
Re: what is the difference between unsigned char and unsigned int in 8051 kiel compil
i couldn't debug the unsigned char variable as there is no generated assembly for it here is a simple program to test
void main()
{
unsigned char count = 0 ;
count++ ;
count++ ;
count++ ;
count++ ...
Re: what is the difference between unsigned char and unsigned int in 8051 kiel compil
I already know that unsigned char is 8 bits
while unsigned int is 16 bit
my problem is that why i couldn't debug the unsigned char
what is the difference between unsigned char and unsigned int in 8051 kiel compiler
while i'm trying to debug the code i noticed something wired
when i define the variable as unsigned char i noticed there is no generated assembly cod in the dis-assembly window
when i convert it to unsigned...
ok i removed this statement
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To summarize:
i think my problem is that
1_ keep reading the RTC at high speed many times at each second
(any suggestions to solve this)
2_ using method 1 ... it seems i have to use the interrupt pin with it, and this method cann't be used...
i found the datasheet says also at the end of method 1 description
If this interrupt is used, the IRQF bit in Register C should be cleared before leaving the interrupt routine.
besides i tried the code without this statement and it has no difference
i added the first method as following but it result in more time error
weather i pooled on UF bit or IRQF
i thought i won't need the interrupt pin so i didn't connect it
while(1)
{
if((XBYTE[12] & 0x10)== 0x10){ //looping on UF bit
//if((XBYTE[12] & 0x80)== 0x80){ //looping on IRQF bit
sec =...
i think the time error is jumping not contentious , i need to check it again to make sure of that
i only write to register A and other time and date regester at initialization
here is the code
void RTC_init(void){
XBYTE[10] = 0x20; //turn on OSC
XBYTE[11] = 0x92; //BCD ,24h ,no dayLight...
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