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HAL_Linux: Add Steps to Manually test pwm channels

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Siddharth Bharat Purohit 2014-05-13 16:09:14 +05:30 committed by Andrew Tridgell
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commit 731d80e6c5
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libraries/AP_HAL_Linux/PRU/Readme.md
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Steps to manually test PRU PWM:
1. cp test_overlays/BB-BONE-PRU-05-00A0.dtbo /lib/firmware/
2. cp firmware/testpru0 firmware/testpru1 /lib/firmware/
3. echo BB-BONE-PRU-05 > /sys/devices/bone_capemgr.#/slots
4. cd /sys/class/pwm/
5. echo # > export e.g. "echo 1 > export" to activate PRU_R30 pin1 as pwm
6. cd pwm1/
7. echo 1100000 > duty_ms
8. echo 20000000 > period_ms
9. echo 1 > run
Note: The above example will produce pwm signal with on time 1100ms and frequency 50Hz