LEDs-PSoC 6

[aliissa02]

Hello,

I have attached a project. The problem that I am having is that all the LEDs work at the same time when I just want one LED to light at a time. Can anyone help please?

Kind regards,

[Rakesh_Patrudu]

Hi @aliissa02 ,

I have recreated your project, as you mentioned all LEDs are working at a time. So, I added a function to make one LED to light at a time. Kindly refer to the following attachment.

Best Regards,
Rakesh

[aliissa02]

Hello,

Thank you. But still having problem that I want the LED to light according to its corresponding threshold but all of them are lighting after each other. 

[Len_CONSULTRON]

aliissa,

It appears from the following function that you are turning on ALL LEDs if ReflectometerReading is greater than the assigned threshold.

void update_LEDs(){
   reset_LEDs();
//Led will light according to the threshold
   for (int l=0; l<NUMBER_OF_PINS;l++)
    {
        if(ReflectometerReading>=threshold[l])
        {
            Cy_GPIO_SetDrivemode(led_Port[l], led_pin[l], CY_GPIO_DM_OD_DRIVESHIGH);
            Cy_GPIO_Write(led_Port[l], led_pin[l],1); // this is to turn on the led.
	    }
    }
}

 Based on your static variable ReflectometerReading = 1100 LED P10.4 would get turned on for 50% duty cycle because of the threshold[0] = 480.  P10.6 would get turned on for 50% duty cycle because of the threshold[0] = 1050. 

Is this your intent?

[Len_CONSULTRON]

aliissa,

Here's another issue:

The following code has an issue that throws an exception error:

void scanKeys(){
    int x;
    for (int k=0; k<=NUMBER_SW_PINS; k++) {
    x= Cy_GPIO_Read(SW_Port[k], SW_pin[k]); // here x will store what is status of switch port.
}

The for() loop is looking for an index of k=2.   This index for SW_PIN[] does not exist.  This is because you specified k<=NUMBER_SW_PINS;  Instead use: k<NUMBER_SW_PINS;  This change will only ask for SW_PINS[0] and SW_PINS[1].

When I made this fix, the code is running and with ReflectometerReading = 1100 then P10.4 and P10.6 gets turned on (for 50% DC).

[aliissa02]

Hello,

Thanks for this. It is still not working. What I want to do is to have one LED working when its corresponding threshold reached and all other LEDs should be off

[Len_CONSULTRON · Accepted solution]

aliisa,

Try this modification of your project.

It simulates a ramping ReflectometerReading variable.

It only turns on one LED at a time.

Here is the LED turn on pattern:

LED ON	Reflectometer(min)	Reflectometer(max)
No LEDs	0	479
LED1	480	1039
LED2	1040	1679
LED3	1680	3039
LED4	3040	4199
LED5	4200	6000

It takes about 3 seconds to cycles the ReflectometerReading variable from min (0) to max (6000).