Led toggling using pushbutton.

Pushkar Sathe

I made this code for the F28027f launchpad kit to toggle the leds using pus button located at gpio12.

It works but can any one please tell me how to latch it .

if (GPIO_getData(gpioH,(GPIO_Number_e)GPIO_Number_12)!=1)
{
if(gLEDcnt++ > (uint_least32_t)(USER_PWM_FREQ_kHz * 1000 / LED_BLINK_FREQ_Hz))
{
DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED2);
DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED3);
DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED4);

gLEDcnt = 0;
}
GPIO_setLow(gpioH, (GPIO_Number_e)GPIO_Number_12);
}
if (GPIO_getData(gpioH,(GPIO_Number_e)GPIO_Number_12)==1)
{
if(gLEDcnt++ > (uint_least32_t)(USER_PWM_FREQ_kHz * 1000 / LED_BLINKFAST_FREQ_Hz))
{
DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED2);
// DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED3);
DRV_toggleLed(drvHandle,(GPIO_Number_e)DRV_Gpio_LED4);

gLEDcnt = 0;
}
GPIO_setHigh(gpioH, (GPIO_Number_e)GPIO_Number_12);
}
// GPIO_setLow(gpioH, (GPIO_Number_e)GPIO_Number_12);
// acknowledge the ADC interrupt

Please help.

over 12 years ago

0 Gautam Iyer over 12 years ago

Guru 192875 points

Hi,

It works but can any one please tell me how to latch it .

Can you elaborate the above? What exactly are you looking for?

Regards,

Gautam

0 Pushkar Sathe over 12 years ago in reply to Gautam Iyer

Prodigy 195 points

I am sorry i should have elaborated.

When i press the button the led switches on .

What i want to do is that when i press the button again i want it to switch off.

0 Gautam Iyer over 12 years ago in reply to Pushkar Sathe

Guru 192875 points

Pushkar, use the toggling feature like: GpioDataRegs.GPATOGGLE.bit.GPIOx = 1; where x is the LED GPIO value.

For F28027: you can check with:

        ((GPIO_Obj *)myGpio)->GPATOGGLE = 0xFFFFFFFF;
        ((GPIO_Obj *)myGpio)->GPBTOGGLE = 0x0000000F;

Also; the switch monitoring should be done in a forever while loop or for loop {eg. while(1) or for(;;)}

Regards,

Gautam

0 Pushkar Sathe over 12 years ago in reply to Gautam Iyer

Prodigy 195 points

Gautam

Thanks, will try.

Regards ,

Pushkar.

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Led toggling using pushbutton.