【经验分享】STM32F0 Timer1 作为PWM设置

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STMCU小助手发布时间：2021-11-24 15:00

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文章简介:	STM32F0 Timer1 作为PWM设置

设置PA7 作为 PWM输出

void TIM_IO_Config(void); K' {9 Y, a) r7 D4 p1 j
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GPIO_InitTypeDef GPIO_InitStructure;+ i1 }8 G% X/ T# X; v2 Q) f
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RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE);+ b9 V# @# i- _5 `3 \3 S4 d
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//. J0 h; ^% a; }" e, C! ~: }
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;2 j- \ P; ^7 H) q/ N8 B5 X+ q
GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_2);8 l" g/ C/ ^6 x- D0 ?7 w
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设置Timer1 为PWM模式，使能，使能PWM输出$ Q. F' q) I' n( P e) n. s
void TIM_PWM_Config(void)
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TimerPeriod = (SystemCoreClock / 17570 ) - 1;
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Channel1Pulse = (uint16_t) (((uint32_t) 5 * (TimerPeriod - 1)) / 10);
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/* TIM1 Ê±ÖÓÊ¹ÄÜ /( l7 b2 p( c. Z$ n- @. d' U
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 , ENABLE);
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TIM_TimeBaseStructure.TIM_Prescaler = 0;
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TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; /* Time ¶¨Ê±ÉèÖÃÎªÉÏÉýÑØ¼ÆËãÄ£Ê½*/* A1 P+ k9 y- w, t
TIM_TimeBaseStructure.TIM_Period = TimerPeriod;
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TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;+ i2 Q* m4 F: \$ F$ f
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TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);( B a! Y, w f5 }7 D
/* ÆµµÀ1£¬2£¬3£¬4µÄPWM Ä£Ê½ÉèÖÃ */1 t9 ?4 e# z: g r1 |
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
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TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;# w7 a# }& C _
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
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TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;
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TIM_OCInitStructure.TIM_Pulse = Channel1Pulse;//Ê¹ÄÜÆµµÀ1ÅäÖÃ1 e7 f. _" {# v% L+ \! R* q' f
TIM_OC1Init(TIM1, &TIM_OCInitStructure);
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/* TIM1 ¼ÆËãÆ÷Ê¹ÄÜ*/; l( \/ t, r ~" f. j4 e4 _
TIM_Cmd(TIM1, ENABLE);9 g# B% m" g" a' s
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/* TIM1 Ö÷Êä³öÊ¹ÄÜ */7 {; S6 i+ K l, w! t k+ e) T
TIM_CtrlPWMOutputs(TIM1, ENABLE);1 |8 q) ]4 V8 m2 i( k
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