| Overview |
| ======== |
| The PWM project is a simple demonstration program of the SDK PWM driver. It sets up the PWM hardware |
| block to output PWM signals on one PWM channel. The example also shows PWM duty cycle is increase or decrease. |
| The FIFO empty interrupt is provided. A new value will be loaded into FIFO when FIFO empty status bit is set. |
| The PWM will run at the last set duty-cycle setting if all the values of the FIFO has been utilized, |
| until the FIFO is reloaded or the PWM is disabled. When a new value is written, the duty cycle changes after the current period is over. |
| The outputs can be observed by oscilloscope. |
| |
| Toolchain supported |
| =================== |
| - IAR embedded Workbench 8.50.1 |
| - GCC ARM Embedded 9.2.1 |
| |
| Hardware requirements |
| ===================== |
| - Micro USB cable |
| - MIMX8MQ6-EVK board |
| - J-Link Debug Probe |
| - 12V power supply |
| - Personal Computer |
| |
| Board settings |
| ============== |
| Use Oscilloscope to measure and observe the Test Point TP1801 output signal. |
| |
| |
| |
| Prepare the Demo |
| ================ |
| 1. Connect 12V power supply and J-Link Debug Probe to the board, switch SW701 to power on the board |
| 2. Connect a USB cable between the host PC and the J1701 USB port on the target board. |
| 3. Open a serial terminal with the following settings: |
| - 115200 baud rate |
| - 8 data bits |
| - No parity |
| - One stop bit |
| - No flow control |
| 4. Download the program to the target board. |
| 5. Launch the debugger in your IDE to begin running the demo. |
| |
| |
| Running the demo |
| ================ |
| These instructions are displayed/shown on the terminal window: |
| ~~~~~~~~~~~~~~~~~~~~~~~ |
| PWM driver example. |
| ~~~~~~~~~~~~~~~~~~~~~~~ |
| |
| |
| Customization options |
| ===================== |
| |
