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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 write the overun error but I don't know the frame error coding please provide the coding just read deeply datasheet ... 114009 example of coding for a 18Fx6K22 // Gestion IT UART1 sur Serial com1 19200,N,8,1 if ((PIE1bits.RCIE == 1)&&(PIR1bits.RC1IF==1)) // si une interruption arrive { c1
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 (...)
when you get the IOC interrupt are you doing a READ of the port BEFORE clearing the interrupt? and do this at the end of your isr ? ie MOVF _ISerialRxPort,0 ;read the port BCF INTCON,RAIF retfie also additionally to handle your IOC in the isr along with other interrupt sources (flags) you should check IOC enabled (...)
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
In pic there to levels of interrupt that is high priority(0x18) and low priority(0x08)..then if there 2 or more interrupt in these level then how will pic execute it..........i mean if the adc interrupt and timer interrupt and a external interrupt all are at one level suppose at high priority than how will (...)
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.
Hello, I'm trying to count how many times the button has been pressed. I'm using TIMER 1. What am I doing wrong over here? Please help! Using mikroC v8.0 and pic18f series. Thanks in advance! char *text1 = "Count:"; unsigned short cnt; char str; void main() { ADCON1 = 0x0F; // Config AN pins as digital //Set up Timer
I use MikroC always in the first time that resset is long to invert the portB, later it works perfect I don't know because it happens that Just read this : /* * Project name: TMR0 (Simple 'Hello World' demonstration of interrupt handling) * Copyright: (c) Mikroelektronika, 2005. * Description:
Hi, If you get a match and toggle RC you can also generate an interrupt at the same time and change the value in the interrupt routine. This works since timer will be cleared to on a match condition, and your code is fast enough to update or change the compare value before it reaches a new value. Best is to update the new CCPR1, follow the write or
Hi all, I am facing a problem with the UART of my pic18f4580 module as the RCIF (receive interrupt flag) never goes down after the first receiving byte. The data sheet says that to clear this bit , I should read RCREG (receive register) , I did so but nothing happens. Note:- I am using MPLAB SIM to test the UART functionality Here is the p