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24 Threads found on Interrupt pic18f
Hi, I Am trying (for now just using the MPLABX simulator) to trigger an interrupt each time any of the associated PINs (CAP1,2 & 3) changes state. If I configure the MCU this way: TRISAbits.TRISA2 = 1; TRISAbits.TRISA3 = 1; TRISAbits.TRISA4 = 1; T5CONbits.TMR5ON = 1; CAP1CONbits.CAP1M0 = 0;
Hello guys I am new to pic micro controllers. I have a problem with it. I have written a very simple code to test the external its interrupts. I don't know why it doesn't work. could you please tell me, what I should do? this is block design of interrupt scheme of the micro controller: 133549 and this my code: [CODE
wtf? SPI slave shall be done by pin change interrupt!
Use Serial receive interrupt to receive the responses.
I want receive and send the data when interrupt occurred. Im familiar with c18 syntax. when the interrupt occurred i receive the data successfully but i can't receive continuously. i also try the for and while statement in the Service Routine but those not work. I m also newer to Programming..Any one guide me
well... two anyway. PIC16F have a single interrupt vector so if you want to prioritize interrupts you have to do it in software. pic18f series have two interrupt vectors although you can still use just one if you want. The high priority interrupt can itself interrupt the low priority one (...)
Thr interrupt on these pins occur on change. have you read datasheet properly. read datasheet and read about portb mismatch i had used this interrupt to interface keypad and it works fine - - - Updated - - - Thr interrupt on these pins occur on change. have you read datasheet properly. read datasheet and read about p
Hi, Without seeing your code, its difficult to say whats the problem here .Anyway you can follow one of a method as shown in below, even though its belongs to pic18f with C18, make necessary changes to your PIC & compiler. Here the controller just enters to interrupt when a first byte is recieved. After that its manually read the bytes . Also y
hey friends i'm interfacing pic18f 4520 with gsm 300 and using mplab c18 compilre and trying to send and receive msg . i'm able to send message but the problem is that i can,t receive msg .i'm trying to monito the string +CMTI:"SM",1. whenever this string comes my uc goes into receive interrupt method and i'm storing this response in char array msg
Hey friends i have written a program in c for pic18f452..i have taken help from Muhammad Ali mazidis book of pic18f... In my program when i give an interrupt on pin INT0.. a delay of 15sec starts..after this i want pin RD1 to go that my relay works on the other end..
How did you deduce that the ISR isn't executing? Are you using the debugger in mikroC? There you can't test the interrupt directly. To do that you need to click the go/jump to interrupt button. Hope this helps. Tahmid.
Is procedural abstraction optimisation really needed to have more than one interrupt? Have you turned off the optimisation? If so, you could possibly fix the problem with a bit of assembler. You could look at the Wiz-C compiler suggested by Brian PIC C Compilers and development ki... Keith.
I have used msp430 and I found an interrupt vector table which in which different interrupts like adc, uart, int, tmr0 etc could be configured individually.. I mean its not a single ISR in which we check the flag using if else ... I am new to pic18f. Now I thought a similar setup will be there in pic18f. But (...)
Hi, I think I'm seeing my microcontroller behave in an unpredictable way, and I know I'm wrong because computers usually have a good reason to do what they're doing...but I still can't figure it out. I have configured the pic18f to interrupt on a logic transition at pin RB5. It does work, and inside the ISR I can perform logic tests such as "
Yes, you can use an external interrupt on the pic18f. USING THE PIC EXTERNAL interrupt AN566 Using the PORTB interrupt on Change as an External
I want to read the status or value of interrupting pulse when i use RB0 as interrupt input pin. I'm try to code rc5 decoding using pic18f4550 what is the solution ? please help me...
Apparently you want a precise counter but you don't really want to let the timer to do it. So instead of keeping the counter value in a variable how about letting the timer run and look for it's value only? Or better, generate an interrupt when you need to do something (something more than just incrementing a value). Of course, your interrupts must
Mayyur, in the PIC18, you have two vectors pre-defined. The high priority at 0x08 and low priority at 0x18. You can take advantage of that and assign some of the interrupts as high priority and some as low priority. If you don't want to use that, you can always just 'poll' for the interrupt flag. So, for example, when an interrupt (...)
You can pull it up to VDD of yuour chip and route the signal line to one of the interrupt pins on PORTB of ur pic18f chip
What clock frequency do you want to generate? If the frequency is low enough, you can generate it with just a timer interrupt. Simply toggle any pin within a timer ISR.