Archives
-
Problem regarding timer0 in the lpc2378
Hi i am currently working on the mcb2300.
the timer0 is used.Iam just toggling the led ports.In the simulation i am able to get the output but regarding the hardware i am not able to see the toggling of the led’s.
Here i am posting the code snippet.kindly help me to solve the problem.
Thanks in advance….#include<stdio.h>
#include <LPC23XX.H>void T0isr(void);
void time_init(void);
void delay(void);
unsigned int value;
void led_init(void);
void delay(void);int main(void)
{
PLLCON=0×00;
CLKSRCSEL=0×01;
CCLKCFG=0×03;
PCONP=0×00000002;time_init();
T0PR=0x0000C6C0;
T0TCR=0×02;
T0MCR=0×0003;
T0MR0=0×00000005;
T0TCR=0×01;
//T0CR0=0×01;
T0TC=0×00;
//T0CTCR=0×00;
T0PC=0×00;FIO2DIR=0x000000FF;
FIO2MASK=0×00000000;
FIO2SET=0×00000055;
FIO2CLR=0x000000AA;T0IR=0×01;
VICVectAddr4 = (unsigned)T0isr;VICVectPriority4=0X00000024;
//Enable the interrupt
VICIntEnable |= 0×00000010;while(1);
}
void time_init()
{PCLKSEL0=0x0000000C;
PINSEL3=0×03000000;
PINMODE3=0×00000000;}
void T0isr(void)
{
FIO2CLR = 0x000000AA;
FIO2SET = 0×00000055;T0IR |= 0×00000001;
//Dummy write to signal end of interrupt
VICVectAddr = 0×00000000;
}
Related Forum Messages
- Interrupt program
- I want timer program to generate pulse using 10khz frequency
- Problem LPC2148 VIC IRQ request
- [SOLVED] LPC2124 timer in Proteus
- Can’t get LPC2148 timer match interrupts to work
- LPC 3250 Timer 0 interrupt
- LPC2148 Delays
- LPC2478 Timer0 interrupt
- Urgent help needed guys…
- Explanation of logomatic IRQ frequency asked
- How to measure the pulse width in capture mode on ARM7
- Problem with UART interrupt in LPC2387
- [SOLVED] problem in interfacing graphical LCD using LPC2138
- Problem timer0 interrupt PIC18F4550
- Scrolling text in lcd for mc9s12e128 some small problem please help
- Small schedduler for pic12c508
- Question from a noobie [1284P to control stepper?]
- LPC1768 problem with timer0
- Im facing a problem with adc in lpc 2138.
- Timer1 interrupt is hit but IRQHandler not executed
i tried to execute a timer program in ARM7- LPC2148 series.....but i got a problem in matching the vector address....can anyone help me to find a solution for this.... this was the program #include "lpc21xx.h" void initTimer(void); //void initPLL(void); void T0ISR(void) __irq; int main(void) { initTimer(); while(1) { __nop(); } return 0; } void initTimer(void) { VPBDIV=0x00000002; // 60 MHz - Div by 6 T0IR = 0x00000000; IODIR1=0x000F0000; // P1^16 =LED --gt Output T0PR = 0x0000001E; // Clk =gt 1 MHz =gt 1 uSec T0TCR= 0x00000000; // Disable Timer0 T0MCR= 0x00000003; // T0MR0= 10000000; // Count upto 1 Sec duration T0TCR= 0x00000001; // Enable Timer0 ...here is my code..is it correct.if wrong plz help me to generate pulse of 10khz . #include ltLPC21xx.Hgt void T0isr(void)__irq; void delay(void) { VPBDIV = 0x00000002; //Set pclk to 30 Mhz PINSEL0 = 0x00000020; //Enable pin 0.2 as capture channel0 T0PR = 0x0000001E; //Load prescaler for 1 Msec tick T0TCR = 0x00000002; //Reset counter and prescaler T0CCR = 0x00000005; //Capture on rising edge of channel0 T0TCR = 0x00000001; //enable timer VICVectAddr4 = (unsigned)T0isr; //Set the timer ISR vector address VICVectCntl4 = 0x00000024; //Set channel VICIntEnable = 0x00000010; //Enable the interrupt } int main(void) { IODIR0=0X000000001; while(1) { IOSET0=0X00000001; delay(); IOCLR0=0X00000001; delay(); } } void T0isr (void)__irq { //static int value; //value = T0CR0; // read ...Hi the code given below needs to run the ISR when a cpature event occurs. But on simulating the code and running it on debugger it doesnot switch to irq mode and hence does not go to ISR for that event. I have tried running the simplest IRQ code given in hitex.pdf. Even in that case irq ISR is not executed. can someone please help with this. Thanks in advance #include <LPC21xx.H> /* LPC21xx definitions */ void T0isr()__irq; int main (void) { ...Hello friends, I was trying to simulate TIMER0 of LPC2124 in Proteus but in vain. I've configured my timer to blink two LEDs at P0.0 amp P 0.1 every 1 sec. But the LED blinks with a delay of 3-4 sec. Also the simulation log says "simulation is not running in real time due to excessive cpu load". you can have a look at my code. Crystal = 10 MHz Microcontroller = LPC2124 Code: #include<LPC21xx.h> void TMER0_INITIALIZE(void); void PINSELECT(void); void delay_ms(unsigned int value); main() { char alter = 0; PINSELECT(); TMER0_INITIALIZE(); while(1) { if(alter) { IO0SET |= 0x03;delay_ms(10); } else { IO0CLR |= 0x03;delay_ms(10); } alter = ~alter; } } /************************************************** Common Pinselect function for all peripherals **************************************************/ void PINSELECT(void) { PINSEL0|= 0; //all GPIO ...I wrote this little test program and can't get the interrupt to fire. I've been over it and over it. Looks right to me (not that that means anything ). I'm using Eclipse/yagarto (GCC). Can anyone spot what I'm doing wrong here? Code: #include "LPC214x.h" #define PLOCK 0x400 void init(void); void IRQ_Routine (void) __attribute__ ((interrupt("IRQ"))); void FIQ_Routine (void) __attribute__ ((interrupt("FIQ"))); void SWI_Routine (void) __attribute__ ((interrupt("SWI"))); void UNDEF_Routine (void) __attribute__ ((interrupt("UNDEF"))); int main(void) { int i; IODIR0 = 0x30600000; IOCLR0 = 0x30600000; ...I am trying to test the timer for LPC3250.I am not sure what is issue with the below code.Interrupt is getting enabled but it is getting in one after another interrupt because of which it is just stuck in ISR.I tired using the CDL and it also gives the same error. Please let me know if i am missing any setting. /* Timer example */ void time_task() { /*Init timer */ // int x =0; //term_dat_out(sendstr, sizeof(sendstr)); TIMCLK_CTRL1 |= 0x04; T0TCR =0; T0TCR =0; T0CTCR =00; T0MCR =0; T0CCR =0; T0EMR=00; T0TC=0; T0PC=0; T0PR=0; T0MR0 = 0; T0MR1 = 0; T0MR2 = 0; T0MR3 = 0; T0IR |= 0x01; /* Set up timer scale*/ //T0PR ...Hey guys since i had some help from other at LPC2000 i decided to help here. I made this code my self! but was helped in timer code like how to use it right by some people there. Ok for my lpc i chose to run at 12 MHZ meaning 12,000,000 ticks per second. so know this you can easily arrive at: 1 uS = 12 ticks 1 mS = 12,000 ticks 1 S = 12,000,000 Now here is my code which set ups the timer and then starts it delaying the amount of time you need... Code : /*-- Company: AtomSoft ..... Author: Jason Lopez --*/ /*-- Please ...I'm busy with a Timer interrupt, but it seems not to work and I search a lot in the examples code and have used a lot but nothing likes to work: Code.h: void Timer0_irq (void) __attribute__ ((interrupt ("IRQ")));; Code.c /********************************************************** Functie: Timer0 irq **********************************************************/ void Timer0_irq(void) { print("T"); timer0_counter++; if(timer0_counter == 500) { flag_time = 1 ltlt flag_time_500ms; timer0_counter = 0; } T0IR = ...the program... # include ltC8051f310.hgt sbit my = P0^0; void TI (void); void port (void); void main (void) { PCA0MD amp= ~0x40; port (); TI (); while (1); } void TI (void) { TMOD = 0x01; TCON = 0x10; CKCON = 0x40; IE = 0x82; TH0 = 00; TL0 = 00; TR0 = 1; } void port (void) { P0MDOUT |= 0x00; P0SKIP |= 0x00; XBR0 = 0x00; XBR1= 0x51; } void TIMER_isr (void) interrupt 1 { unsigned char j; for (j=0;jlt1;j++) { j=0; my =! my ; } TF0 =0; } this prog works correctly in keil simulator... Bt wen i use Silicon IDE i am nt able to get the toggling on P0.0... instead on P0.3 n P3.0 i am getting the toggle... Help me out...I tried to understand the frequency working of the logging but do not understand how it calculates the counter value for IRQ. The T0MR0 = 58982400 / freq; should match the clock speed of 12 mHz at a frequency of 1Hz. It is 4,9 times bigger. I tested the frequency and it really works at 20Hz. Does anyone know how it works? This is the timer setup code: void mode_2(void) { rprintf("MODE 2\n\r"); enableIRQ(); // Timer0 interrupt is an IRQ interrupt VICIntSelect amp= ~0x00000010; // Enable Timer0 interrupt VICIntEnable |= 0x00000010; // Use slot 2 for UART0 interrupt VICVectCntl2 = ...Hi I am using LPC2388 microcontroller , I generated PWM on this controller on p1.18 (it is 120khz(8.6usec)) , my PWM working fine , Now i want to measure this signal , and looped back (shorted p1.18 and p3.24) .i am unable to measure this signal , i am using interrupt mode . I am generating PLCLK (system clock ) of 250khz(on timer 0) to measure 120khz(PWM). Below is the code ,please guide me how do it. #include ltLPC23xx.Hgt void T0ISR_1 (void) __irq; volatile unsigned int cap_current ; volatile unsigned int cap_previous ,cap_differ; //unsigned int *Ram_pointer; //---------------------------------------------------------------------------------- /* generating PWM */ static void PWMInit(){ PINSEL3 |= 0x20 ;// select the function pwm ...Im Using LPC2387 in KEIL Uvision V4.14.4.0 Im trying to wite a program for UART0 with an interrupt, But its not entering into the ISR routine... I dont know whats the Problem is?? So please guide me how to overcome this. Without Interrupt Im able to Transmit the message.... Clock Source is Main Oscillator( Freq is 10Mhz) Peripheral Clock Freq is 15Mhz And The Baudrate im setting is 115200, and im using fractional baudrate register #include <LPC23xx.H> void pll(void); void Transmit(unsigned char ch); void Initialise_Uart0(void); void Configure_UART0_Baudrate(void); void ISR_Uart0(void) __irq; int main() { //unsigned char *str = "UART0 Serial Test"; ...hello, i am interfacing graphical LCD with LPC2138 micro controller. but their is a some problem genrating in my code, due to this i am unable to interface my LCD. I am attaching my code amp proteus file with this post. please help me to remove my problem.. Code: #include<LPC213X.H> #define RST 4 #define E 5 #define RW 6 #define DI 7 #define CS1 8 #define CS2 9 #define LED 18 void lcd_cmd(unsigned char); void lcd_data(unsigned char); void lcd_inilize(); void shift(int); void delay(unsigned int); void display(); void page_address(int); void column_address(int); void left_side(int,char); void right_side(int,char); void clear_screen(); void start_line(int); /*const unsigned char truck[1024] = { 0, 0, 0, 0, 0, 0, 0, ...Hello everybody; i neeeeeeeed your help please ! this is my program : Code: /** INCLUDES *******************************************************/ #include <p18cxxx.h> #include "bootloader.h" void low_ISR (void); void YourLowPriorityISRCode(void); #pragma code low_vector = 0x18 void low_ISR (void) { _asm goto YourLowPriorityISRCode _endasm } #pragma code #pragma interruptlow YourLowPriorityISRCode void YourLowPriorityISRCode(void) { INTCONbits.TMR0IF = 0; //Clear Timer 0 Interrupt Flag LATBbits.LATB0 =!(LATBbits.LATB0) ; //inverse the output } /** Ports Init ******************************************/ void Init_Portb(void) { TRISBbits.TRISB0 = 0; //RB0 = output LATBbits.LATB0 = 0; } /** TIMER0 Init ******************************************/ void EnableTimer (void) { TMR0H = 0x00; TMR0L = 0x00; T0CON = 0x01; // Timer disabled; prescalar of 1:4; 16 bit mode RCONbits.IPEN = 1; //Enable Interrupt Priorities INTCONbits.GIEL = 1; //Enable Low Priority Interrupt INTCONbits.GIE = 1; //Enable GlobalInterrupt INTCONbits.TMR0IE = 1; //Enable ...hi how are you!? i try many times to edit my code but problem it does not work it just shift little this is my code ,,withonly the text showing without any scrolling can you tell me how i can add the fuction for scrolling the text please ?? #include lthidef.hgt #include ltmc9s12e128.hgt #pragma LINK_INFO DERIVATIVE "SampleS12" #define setEN 0x04 // 0000 0100 - activate enable bit only #define cmd 0x00 // set rs=0(command) and rw=0 #define dat 0x01 // set rs=1(data) and rw=0 void initPort(void); void initPort(void) { PORTK = 0x00; //clear and set PORT K DDRK = 0xFF; PTP=0x00; //and P as output port DDRP=0XFF; } void delay(unsigned int); void delay(unsigned int x) //delay ...Hi brothers! I need implement the following code in small PIC12C508. I teste with sucessifull in others devices like PIC12F629 and PIC16F627, but when I compile for PIC12C508 the code not run correctly, anyone have any suggestion? Thanks a lot and have a nice day or night! #include amplt;stdlib.hampgt; #include amplt;stdio.hampgt; #define ON 0 #define OFF ...[edited] I just have a little project on AVR and just wanna make sure the micro i'm using is correct. So i am using Atmega1284p and driver L293D to drive the bipolar stepper motor. Got everything hooked up like the schematic below to the micro. This is the code i used to try to turn the motor on but no luck so far. Could anyone give me some advice? #define F_CPU 10000000UL #include ltavr/io.hgt #include ltstdlib.hgt #include ltutil/delay.hgt #include ltavr/interrupt.hgt void turnleft(void); void turnright(void); void forward(void); void backward(void); void stop(void); void turn90d(void); void delayms(uint16_t millis); void turn180d(void); void parallel(void); void ...Hi, this is my first thread in this forum and at the beginning i want to apologize for my English OK, I've just written small program with timer0 and interrupt. I want to toggle one of the LED on board, but...It doesn't work and I really don't know what's wrong with this code. Each LED is lit and nothing more... Could you help with it ? Thank you in advance and best regards :) #ifdef __USE_CMSIS #include "LPC17xx.h" #endif #include <cr_section_macros.h> #include <NXP/crp.h> // Variable to store CRP value in. Will be placed automatically // by the linker when "Enable Code Read Protect" selected. // See crp.h header ...The output is varying continously in my lcd even there is no change in the adc input.i want a code to display the output in lcd.please give any suggestions to my code. #include ltlpc21xx.hgt /* LPC2200 definitions */ #include ltstdio.hgt /* standard I/O .h-file */ //#define VREF 3 int i,j; long val,adc_val; unsigned char d1=0,d2=0,d3=0,d4=0,d5=0,d6=0; //extern void init_serial (void); void delay(void); void adc_init(void); void adc_read(void); void data(void); void lcddata(unsigned char c); void lcdcmd(unsigned char c); void lcdinit(void); void lcddisplay(unsigned char *ptr); void message(unsigned char k,unsigned char *ptr1); int main() { PINSEL0=0X00000000; PINSEL1=0X00400000; IODIR0=0X70000000; IODIR1=0X00ff0000; lcdinit(); delay(); //lcdcmd(0x01); //delay(1000); message(0x80,"ir measurement"); adc_init(); while(1) { adc_read(); data(); delay(); } } void adc_init(void) { //PINSEL1=0x01000000; ADCRamp=0x00000000; VPBDIV = 0x02; /*Set the Pclk to 30 Mhz */ ADCR|= 0x00210601; } void ...Hi, I've written a sample code for LPC2378 (simulation mode using keil) to generate timer1 interrupt in IRQ mode. Upon T1MR0 match, timer1 is generating interrupt but the IRQHandler is not invoked instead the control is transfer to else where in the program. I've place a break point but no luck in IRQHandler. Please help me in resolving this issue: void InitTimer1() { /* Timer1 and Preset disabled */ T1TCR = 0x00; /* Timer Counter register, after PR is reset, this inc by 1 */ T1TC = 0x00; /* Prescalar register! Max value for prescalar counter */ T1PR = 0xFFFF; /* Prescale Counter register */ T1PC = 0x0; /* End ...