Hello sir,
I need to write an ISR for serial interrupt.
void serial_int (void) interrupt 4 //ISR for Serial interrupt
{
if((IE & BIT4) == BIT4) //UART interrupt source
REN = 1; // enables serial port reception { while(RI == 0) {} RI = 0; ucRxChar1 = SBUF; } this is how i have written the ISR... I am unable to run my program... it is giving error... is der any other way to write ISR?
REGARDS MAYURI
Do you really think an interrrupt handler should have a busy-loop where it waits for the hardware to be ready for something? Isn't the intention with an interrupt handler that the processor interrupts the normal program execution when the hardware gets ready for something?
What hapens if you have an ISR that gets stuck in an infinite loop? Will the main program ever run then?
By the way - did you seriously dislike the look of your post with the code posted using the proper tags as described directly above the message input box? What made you think using the tags was a bad idea best avoided?
if((IE & BIT4) == BIT4) //UART interrupt source do you really think the interrupt will fire if it is not enabled?
did you seriously dislike the look of your post with the code posted using the proper tags as described directly above the message input box? What made you think using the tags was a bad idea best avoided? easy - requirs reading instructions
Erik
i have enabled all interrupts.
Am i suppose to include any registry/look up table or something?
Am i missing out something?
Regards Mayuri
Basic study of the 8051 architecture, and how to use it?
The 8051 has been around for years - there are plenty of examples, tutorials, etc; eg,
http://www.keil.com/books/8051books.asp http://www.keil.com/download/list/c51.htm
http://www.8052.com/tutorial www.8052.com/.../120112