TI中文支持网PWM模块已经调好 能给出1到2毫秒的高电平
但给电调做初始化再给油门的程序时出了问题 要先烧初始化程序 再烧油门程序电机才转 一起烧的话电调就会嘀嘀嘀响 我看说明书上写油门信号太窄 可我在stm32上做就没这个问题啊
初始化程序
void motor_init(void)
{
SysCtlClockSet(SYSCTL_SYSDIV_1);
{
SysCtlClockSet(SYSCTL_SYSDIV_1);
SysCtlPeripheralEnable(SYSCTL_PERIPH_PWM0);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_6);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_7);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_4);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_5);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_7);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_4);
GPIOPinTypePWM(GPIO_PORTB_BASE, GPIO_PIN_5);
GPIOPinConfigure(GPIO_PB6_M0PWM0); GPIOPinConfigure(GPIO_PB7_M0PWM1); GPIOPinConfigure(GPIO_PB4_M0PWM2);
GPIOPinConfigure(GPIO_PB5_M0PWM3);
GPIOPinConfigure(GPIO_PB5_M0PWM3);
PWMGenConfigure(PWM0_BASE,PWM_GEN_1,PWM_GEN_MODE_UP_DOWN| PWM_GEN_MODE_NO_SYNC);
PWMGenConfigure(PWM0_BASE,PWM_GEN_0,PWM_GEN_MODE_UP_DOWN| PWM_GEN_MODE_NO_SYNC);
PWMGenConfigure(PWM0_BASE,PWM_GEN_0,PWM_GEN_MODE_UP_DOWN| PWM_GEN_MODE_NO_SYNC);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_0, 2500);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_1, 2500);
PWMGenPeriodSet(PWM0_BASE, PWM_GEN_1, 2500);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_0, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_1, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_3, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_1, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2, 0);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_3, 0);
PWMOutputState(PWM0_BASE, (PWM_OUT_0_BIT |PWM_OUT_1_BIT), true);
PWMOutputState(PWM0_BASE, (PWM_OUT_2_BIT |PWM_OUT_3_BIT), true);
PWMOutputState(PWM0_BASE, (PWM_OUT_2_BIT |PWM_OUT_3_BIT), true);
PWMGenEnable(PWM0_BASE, PWM_GEN_0);
PWMGenEnable(PWM0_BASE, PWM_GEN_1);
motor_out(1000,1000,1000,1000);
delay_Nms(3000);
}
PWMGenEnable(PWM0_BASE, PWM_GEN_1);
motor_out(1000,1000,1000,1000);
delay_Nms(3000);
}
油门程序
void motor_out(uint32_t motor1, uint32_t motor2, uint32_t motor3, uint32_t motor4)
{
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_0,motor1);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_1,motor2);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2,motor3);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_3,motor4);
}
{
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_0,motor1);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_1,motor2);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_2,motor3);
PWMPulseWidthSet(PWM0_BASE, PWM_OUT_3,motor4);
}
main函数
int main()
{
motor_init();
while(1)
{
motor_out(1500,1500,1500,1500);
}
{
motor_init();
while(1)
{
motor_out(1500,1500,1500,1500);
}
}
求大神点拨
xyz549040622：
可以再详细点描述下你的问题吗？
要先烧初始化程序 再烧油门程序，分别是两个MCU配合使用吗？各自负责什么模块呢？很可能是你对MCU的特性不熟悉导致的。
