CX32L003 使用高级定时器TIM1初始化4路pwm

hejun96

此处使用CX32L003 TIM1(高级定时器)的PWM初始化 4路pwm,IO复用引脚使用的是PC6(TIM1_CH1),PD2(TIM1_CH2),PC3(TIM1_CH3),PC4(TIM1_CH4)

1. RCC->HCLKEN |= 1 << 2;
   
2.         RCC->HCLKEN |= 1 << 3;
   
3.         RCC->PCLKEN |= 1 << 10;//RCC_TIM1
   
4.        
   
5.         GPIOC->AFR |= 0X01000000;//TIM1_CH1
   
6.         GPIOC->DIRCR |= 1 << 6;//pc6
   
7.         GPIOC->OTYPER &= ~(1 << 6);
   
8.         ///GPIOC->PUPDR |= 2 << 12;
   
9.         GPIOC->SLEWCR &= ~(1 << 6);
   
10.        
    
11.        
    
12.         GPIOD->AFR |= 0X00000100;//TIM1_CH2
    
13.         GPIOD->DIRCR |= 1 << 2;//PD2
    
14.         GPIOD->OTYPER &= ~(1 << 2);
    
15.         ///GPIOD->PUPDR |= 2 << 4;
    
16.         GPIOD->SLEWCR &= ~(1 << 2);
    
17.        
    
18.        
    
19.         GPIOC->AFR |= 0X00001000;//TIM3_CH1
    
20.         GPIOC->DIRCR |= 1 << 3;//PC3
    
21.         GPIOC->OTYPER &= ~(1 << 3);
    
22.         ///GPIOC->PUPDR |= 2 << 6;
    
23.         GPIOC->SLEWCR &= ~(1 << 3);
    
24.        
    
25.         GPIOC->AFR |= 0X00010000;//TIM4_CH1
    
26.         GPIOC->DIRCR |= 1 << 4;//PC4
    
27.         GPIOC->OTYPER &= ~(1 << 4);
    
28.         ///GPIOC->PUPDR |= 2 << 8;
    
29.         GPIOC->SLEWCR &= ~(1 << 4);
    
30.        
    
31.         TIM1->ARR = arr;
    
32.         TIM1->PSC = psc;
    
33.        
    
34.         TIM1->CCMR1 |= 6 << 4;//TIM1_CH1 OC_MODE1
    
35.         TIM1->CCMR1 |= 1 << 3;//OC_MODE1 enable
    
36.        
    
37.         TIM1->CCMR1 |= 6 << 12;//TIM1_CH2 OC_MODE1
    
38.         TIM1->CCMR1 |= 1 << 11;//OC_MODE2 enable
    
39.        
    
40.         TIM1->CCMR2 |= 6 << 4;//TIM1_CH3 OC_MODE1
    
41.         TIM1->CCMR2 |= 1 << 3;//OC_MODE3 enable
    
42.        
    
43.         TIM1->CCMR2 |= 6 << 12;//TIM1_CH4 OC_MODE1
    
44.         TIM1->CCMR2 |= 1 << 11;//OC_MODE4 enable
    
45.         /*
    
46.         TIM1->CR1 |= 1<<7;//TIM1 ARP1 enable
    
47.         TIM1->CR1 |= 1<<4;//TIM1 计数器向下计数
    
48.         */
    
49.         TIM1->CCER |= 1 << 0;//OC1 enable
    
50.         TIM1->CCER |= 1 << 4;//OC2 enable
    
51.         TIM1->CCER |= 1 << 8;//OC3 enable
    
52.         TIM1->CCER |= 1 << 12;//OC4 enable
    
53.          
    
54.         TIM1->CCR1 = TIM1_CH1_PULSEWIDTH;
    
55.         TIM1->CCR2 = TIM1_CH2_PULSEWIDTH;
    
56.         TIM1->CCR3 = TIM1_CH3_PULSEWIDTH;
    
57.         TIM1->CCR4 = TIM1_CH4_PULSEWIDTH;
    
58.        
    
59.         TIM1->BDTR |= 1 << 15;
    
60.        
    
61.         ///TIM1->CR1 = 0x0080;//ARPE enable
    
62.        
    
63.         TIM1->CR1 |= 1 << 0;//TIM1 enable

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eric2013

谢谢分享。

hejun96

eric2013 发表于 2021-8-10 16:06
谢谢分享。

版主知道哪里可以申请到CX32L003F8P6 TSSOP-20的开发板吗？我想用开发板仿真下寄存器操作

eric2013

hejun96 发表于 2021-8-23 09:36
版主知道哪里可以申请到CX32L003F8P6 TSSOP-20的开发板吗？我想用开发板仿真下寄存器操作

可以去他们官网看看有没有联系方式。