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dianjixz
38 lines
1.3 KiB
Markdown
38 lines
1.3 KiB
Markdown
# Use the Firmware examples for the CM4
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Applicable platforms: STM32MP157-DK1, STM32MP157-DK2
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The Firmware examples for the CM4 from [STM32CubeMP1](https://github.com/STMicroelectronics/STM32CubeMP1.git)
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are enabled in the *demo* configuration.
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All examples built are installed in the path `/usr/lib/Cube-M4-examples/`
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We will use the *GPIO_EXTI* application for the example as it is easy to
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test.
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```
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# cd /usr/lib/Cube-M4-examples/GPIO_EXTI/
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# ./fw_cortex_m4.sh start
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fw_cortex_m4.sh: fmw_name=GPIO_EXTI.elf
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[ 284.342266] remoteproc remoteproc0: powering up m4
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[ 284.346258] remoteproc remoteproc0: Booting fw image GPIO_EXTI.elf, size
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197496
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[ 284.353331] remoteproc remoteproc0: header-less resource table
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[ 284.358929] remoteproc remoteproc0: no resource table found for this
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firmware
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[ 284.366048] remoteproc remoteproc0: header-less resource table
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[ 284.371881] remoteproc remoteproc0: remote processor m4 is now up
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```
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This run the *GPIO_EXTI* example on the Cortex M4 processor.
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Test the behavior of the CM4 application by Pushing the *USER1* button to
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toggle the state of the *LED7*.
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```
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# ./fw_cortex_m4.sh stop
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fw_cortex_m4.sh: fmw_name=GPIO_EXTI.elf
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[ 293.167161] remoteproc remoteproc0: warning: remote FW shutdown without
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ack
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[ 293.172769] remoteproc remoteproc0: stopped remote processor m4
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```
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To stop the example running on the M4 processor.
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