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发表于 2020-10-12 17:06:28
沙发
- ls -l /sys/class/pwm/
- total 0
- lrwxrwxrwx 1 root root 0 Jan 1 08:00 pwmchip0 -> ../../devices/platform/ff170010.pwm/pwm/pwmchip0
- lrwxrwxrwx 1 root root 0 Jan 1 08:00 pwmchip1 -> ../../devices/platform/ff180000.pwm/pwm/pwmchip1
复制代码- cat /sys/kernel/debug/pwm
- platform/ff180000.pwm, 1 PWM device
- pwm-0 (vdd-core ): requested enabled period: 5003 ns duty: 1200 ns polarity: inverse
- platform/ff170010.pwm, 1 PWM device
- pwm-0 (ir_tx ): requested period: 24997 ns duty: 0 ns polarity: normal
复制代码 1. 公版软件的pwmchip0对应的是ff170010(pwm5),被ir_tx使用了。
2. 公版软件的pwmchip1对应的是ff180000(pwm0),被vdd-core使用了。
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