Author Topic: Control LED brightness through RFDuino Test app on android  (Read 830 times)


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Control LED brightness through RFDuino Test app on android
« on: July 22, 2016, 07:56:05 AM »
Hi guys. So I am completely new to Arduino software and RFDuino.

My LED is connected to RFDuino's GPIO pin and ground with a resistor. I want it to receive the value that I send from the RFDuino Test on my android app, and that value(number) would be converted to the value of analogWrite, which is 0 to 255. My code right now looks like this:

Code: [Select]
#include <RFduinoBLE.h>

int led = 2;           
uint32_t brightness;
void setup() {
  RFduinoBLE.deviceName = "RFDuino";
  RFduinoBLE.advertisementData = "LED";
  pinMode(led, OUTPUT);

void loop() {

void RFduinoBLE_onConnect() {
  analogWrite(led, 255);

void RFduinoBLE_onDisconnect() {
  digitalWrite(led, LOW);

void RFduinoBLE_onReceive(char *data, int len) {
    brightness = data[0];
    analogWrite(led, brightness);

I'm able to send values 0 to 99, and the LED brightness would increase from 0-99. However, it gets dimmer when I send value of 100. How would I be able to send value 0-255 and have analogWrite() to pick it up as the brightness?