Tiva c series TM4C123 launchpad not working

Hello Thangamani,

Is this a simple program like GPIO toggle? Can you share the code?

Regards
Amit

Hi Amit,

It is not about toggling the GPIO even thought I try to generate PWM I am unable to get output through the pin. when I try to debug step by step the instructions is moving step by step but there is no changes in the pins or in led.

Regards
Praveen

Hello Praveen,

How have you configured the GPIO and the PWM for the application? Did you check the example codes in TivaWare?

Regards
Amit

Hello Amit,

I stared to work only after worked with those example. Before controller going into this wrong stage it's working is perfect as my expect.

Regards

Praveen 

Amit is asking you to present your GPIO & PWM, "Configuration & Set Up" code.

Your work effort & board history - while of interest - cannot (by themselves) guide us to your solution.

Hello Amit,

Here the code
#include <stdbool.h>
#include <stdint.h>
#include "inc/tm4c123gh6pm.h"
#include "inc/hw_memmap.h"
#include "driverlib/gpio.h"
#include "driverlib/pin_map.h"
#include "driverlib/pwm.h"
#include "driverlib/sysctl.h"
#include "driverlib/uart.h"
#include "utils/uartstdio.h"
#include "driverlib/interrupt.h"
#include "driverlib/timer.h"

void Timer0IntHandler(void);
//void PWM_CONFIG();
void TIMER_CONFIG();

uint32_t ui32Period;
#define PWM_FREQUENCY 55
volatile uint32_t ui32Load;
volatile uint32_t ui32PWMClock;
volatile uint32_t ui8Adjust;
unsigned int temp;
int main()
{
SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_OSC_MAIN|SYSCTL_XTAL_16MHZ);
SysCtlPWMClockSet(SYSCTL_PWMDIV_64);
//ENABLING THE PERIPHERALS
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); //ENABLE GPIO_A PIN 2_3_4
GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4); // GPIO PIN TYPE
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);
//PWM_CONFIG();
TIMER_CONFIG();
while(1)
{}
}

void Timer0IntHandler(void)
{

// Clear the timer interrupt
TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
static unsigned int step=0;
ui8Adjust = 83;
if(step==6)
step=0;
else
step++;
switch(step)
{
case 0: // segment 0(0-60)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x02);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x0c);
break;
}
case 1: // segment 1(60-120)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x02);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x14);
break;
}
case 2: // segment 2(120-180)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x04);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x18);
break;
}
case 3: // segment 3(180-240)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x04);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x0c);
break;
}
case 4: // segment 4(240-300)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x08);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x14);
break;
}
case 5: // segment 5(300-360)
{
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x08);
GPIOPinWrite(GPIO_PORTA_BASE, GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4, 0x18);
break;
}
}
}
void TIMER_CONFIG()
{
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0); // Enable TIMER0 FOR SEGMENT

// TIMER INTERRUPT CONFIGH
TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
ui32Period = (SysCtlClockGet() / 10) / 2;
TimerLoadSet(TIMER0_BASE, TIMER_A,3960);
IntEnable(INT_TIMER0A);
TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
IntMasterEnable();

TimerEnable(TIMER0_BASE, TIMER_A);

}

This the code I used to debug on TM4CV123GH6PM. when I try to debug it was done but the is no response from the controller but the led used to blink in red colour. I have not got any change in the GPIO or from PWM.

Regards
Praveen

Hello Praveen,

When you halt the debugger, where the does the code show it is executing?

Regards
Amit