57 lines
1.9 KiB
Plaintext
57 lines
1.9 KiB
Plaintext
Overview
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========
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This demo application demonstrates the EflexPWM fault demo.
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This application demonstrates the pulse with modulation function of EflexPWM module. It outputs the
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PWM to control the intensity of the LED. PWM shut down when a fault signal is detected on the CMP
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output. One input of CMP, other input is from internal DAC.
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Toolchain supported
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===================
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- IAR embedded Workbench 9.30.1
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- Keil MDK 5.37
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- GCC ARM Embedded 10.3.1
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- MCUXpresso 11.6.0
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Hardware requirements
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=====================
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- Mini/micro USB cable
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- EVK-MIMXRT1020 board
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- Personal Computer
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Board settings
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==============
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Prepare the Demo
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================
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1. Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
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2. Open a serial terminal with the following settings:
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- 115200 baud rate
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- 8 data bits
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- No parity
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- One stop bit
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- No flow control
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3. Download the program to the target board.
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4. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
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Running the demo
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================
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The log below shows the output of the pwm fault demo in the terminal window:
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Welcome to PWM Fault demo
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Use oscilloscope to see PWM signal at probe pin: J17-8
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Connect pin J17-7 to high level and ground to see change.
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Note:
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The level state on pin J17-7 determines the output of the PWM signal
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- When at low level, the PWM signal will output at pin J17-8.
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- When at high level, the PWM signal output will be disabled.
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Note:
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To debug in qspiflash, following steps are needed:
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1. Select the flash target and compile.
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2. Set the SW8: 1 off 2 off 3 on 4 off, then power on the board and connect USB cable to J23.
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3. Start debugging in IDE.
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- Keil: Click "Download (F8)" to program the image to qspiflash first then clicking "Start/Stop Debug Session (Ctrl+F5)" to start debugging.
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