可以烧写到f28335中的pwm代码
时间: 2024-05-02 16:16:26 浏览: 14
当然可以,以下是一个简单的例子,用于控制F28335的PWM输出:
```c
#include "F2837xD_device.h"
#include "F2837xD_Examples.h"
void InitEPwm1(void);
void InitEPwm2(void);
void main(void)
{
InitSysCtrl();
InitEPwm1();
InitEPwm2();
EINT; // Enable Global interrupt INTM
ERTM; // Enable Global realtime interrupt DBGM
while(1) {} // Loop forever
}
void InitEPwm1(void)
{
EPwm1Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP; // Count up
EPwm1Regs.TBPRD = 2000; // Set period for PWM signal
EPwm1Regs.CMPA.bit.CMPA = 1000; // Set duty cycle for PWM signal
EPwm1Regs.AQCTLA.bit.ZRO = AQ_SET; // Set PWM signal to high when counter reaches 0
EPwm1Regs.AQCTLA.bit.CAU = AQ_CLEAR; // Set PWM signal to low when counter matches CMPA
}
void InitEPwm2(void)
{
EPwm2Regs.TBCTL.bit.CTRMODE = TB_COUNT_UP; // Count up
EPwm2Regs.TBPRD = 2000; // Set period for PWM signal
EPwm2Regs.CMPA.bit.CMPA = 1000; // Set duty cycle for PWM signal
EPwm2Regs.AQCTLA.bit.ZRO = AQ_SET; // Set PWM signal to high when counter reaches 0
EPwm2Regs.AQCTLA.bit.CAU = AQ_CLEAR; // Set PWM signal to low when counter matches CMPA
}
```
在上面的例子中,我们使用了 `InitEPwm1()` 和 `InitEPwm2()` 函数来初始化两个PWM模块,分别输出PWM信号。`EPwm1Regs` 和 `EPwm2Regs` 是F28335的PWM模块寄存器,用于配置PWM信号的各种参数。你可以根据你的具体需求修改这些参数以生成适合你应用的PWM信号。