PC机键盘控制MCU产生PWM波，进而控制电动机的转速



利用52单片机外部晶振11.0592MHz，产生准确的波特率119200，实现MCU与PC机的通信，PC机发送字符在 1 - 9 范围内时,MCU的IO口即响应输出对应占空比的pwm波(占空比10 -90 ，10 步进)，Pwm波由定时器T0模拟产生。



胡雪川 huxuec@yahoo.com.cn

2010.1.2

程序有待改进完善，不足之处，欢迎各位提出-PC-keyboard control MCU generate PWM wave, and then control the motor speed using an external crystal oscillator 52 MCU 11.0592MHz, produce accurate baud rate of 119.2 thousand to achieve MCU and the PC, communications, PC sends characters　1 - 9　,within the time, MCU to respond to the output of the IO port that corresponds to the duty cycle of the pwm wave (duty cycle 10 -90 , 10　step), Pwm waves generated by the timer T0 simulation.

Hu Xue-chuan

huxuec@yahoo.com.cn

2010.1.2

procedures should be improved, and deficiencies are welcome to put