cde1e5d940
attach probe of the oscilloscope too the 3.3v & PWM3 like below: jack ------| |---| |-| |---- |o o 3.3v |eth1| |eth0| |o o |o o |o o PWM3 |o o type commands below to rt-thread console: msh /> pwm_enable pwm0 3 msh /> pwm_set pwm0 3 140 90 turn off pwm: msh /> pwm_disable pwm0 3 Signed-off-by: Du Huanpeng <548708880@qq.com>