| .. _fade-led-sample: |
| |
| PWM: Fade LED |
| ############# |
| |
| Overview |
| ******** |
| |
| This is a sample app which fades a LED using PWM. |
| |
| The LED will start from dark and increases its |
| brightness gradually for 10 seconds. Then, the |
| brightness reduces gradually for 10 seconds and |
| finally the LED becomes dark again. The LED will |
| repeat this cycle for ever. |
| |
| Wiring |
| ****** |
| |
| Arduino 101 and Quark D2000 CRB |
| =============================== |
| You will need to connect the LED to ground and PWM0 via |
| the shield. You may need a current limiting resistor. See |
| your LED datasheet. |
| |
| Nucleo_F401RE and Nucleo_L476RG |
| =============================== |
| Connect PWM2(PA0) to LED |
| |
| Nucleo_F103RB |
| ============= |
| Connect PWM1(PA8) to LED |
| |
| Building and Running |
| ******************** |
| |
| This sample can be built for multiple boards, in this example we will build it |
| for the arduino_101 board: |
| |
| .. code-block:: console |
| |
| $ cd samples/basic/fade_led |
| $ make BOARD=arduino_101 |
| $ make BOARD=arduino_101 flash |
