Can't blink Photon LED from Smartthings App

Cloud
1

Hi,

I am just trying to toggle the D7 Led using smartthings app. I have the following code for the photon below.

int ledToggle(String command);
int led = D7; 
void setup() 
{
  Particle.function("ledstate", ledToggle);    
  pinMode(led, OUTPUT);
}
void loop()
{}

int ledToggle(String command)
{
  if (command == "1") {   
    digitalWrite(led, HIGH);   
    return 1;
  } else {               
    digitalWrite(led, LOW);    
    return 0;
  }
}

The code for the device handler is written below.

preferences {
    input("token", "text", title:"Access Token")
    input("deviceID", "text", title:"Device ID")
    }
 
metadata {
	definition (name: "Photon", author: "calmraptor") {
    	capability "Switch"
	}
	tiles {
		standardTile("switch", "device.switch", width: 2, height: 2, canChangeIcon: true) {
		state "on", label: '${name}', action: "switch.off", icon: "st.switches.switch.on", backgroundColor: "#79b821"
		state "off", label: '${name}', action: "switch.on", icon: "st.switches.switch.off", backgroundColor: "#ffffff"
		}

		main "switch"
		details "switch"
	}
}

def parse(String description) {
	log.error "This device does not support incoming events"
	return null
}

def on() {
    httpPost(
		uri: "https://api.particle.io/v1/devices/${deviceId}/ledstate",
        body: [access_token: token, command: '1'],  
	)
}

def off() {
    httpPost(
		uri: "https://api.particle.io/v1/devices/${deviceID}/ledstate",
        body: [access_token: token, command: '0'],  
	)
}

In Devices on the Smartthings IDE, I have put in the DeviceID and the token which I got from ‘particle token create’.

When I click the ‘on’ button in smartthings app, I get the following error on the IDE saying
groovyx.net.http.HttpResponseException: Unauthorized @line -1 (off)

There were others in the community that did the same thing as above, but I can’t seem to get rid of my error.

Thanks