【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 s$ f! K1 G3 e' H% J
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//; t- h' S) o$ t8 i
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 ;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_2);
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}
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设置Timer1 为PWM模式，使能，使能PWM输出2 |! J& `% t8 `8 h
void TIM_PWM_Config(void), n; X3 o3 D) @$ g! ]
{
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TimerPeriod = (SystemCoreClock / 17570 ) - 1;& k" q2 S. S2 @, Q7 H
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Channel1Pulse = (uint16_t) (((uint32_t) 5 * (TimerPeriod - 1)) / 10);' ~$ M: X* {! W' d
/* TIM1 Ê±ÖÓÊ¹ÄÜ /- g, ?0 K& g0 K* s N4 f5 y
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1 , ENABLE);
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TIM_TimeBaseStructure.TIM_Prescaler = 0;$ F* A' q) E8 \( w6 ~
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; /* Time ¶¨Ê±ÉèÖÃÎªÉÏÉýÑØ¼ÆËãÄ£Ê½*/
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TIM_TimeBaseStructure.TIM_Period = TimerPeriod;% l* ~5 J# }# D9 o) ^* D
TIM_TimeBaseStructure.TIM_ClockDivision = 0;2 ?3 K7 F0 m8 |4 t- z0 c
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;
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TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);7 m i( v9 n8 M. R1 I% O- k
/* ÆµµÀ1£¬2£¬3£¬4µÄPWM Ä£Ê½ÉèÖÃ */" P' u: [7 }$ i- k) |. c0 F- u6 o
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;% J" Z& d. L3 W( X
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;
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TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
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TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;1 W- a4 |6 f3 G, \% R3 Y! m% ~! L
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TIM_OCInitStructure.TIM_Pulse = Channel1Pulse;//Ê¹ÄÜÆµµÀ1ÅäÖÃ
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TIM_OC1Init(TIM1, &TIM_OCInitStructure);4 T+ t) X8 Q0 G" R$ g" ?
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/* TIM1 ¼ÆËãÆ÷Ê¹ÄÜ*/# y2 w0 g& |- W: m8 o2 b
TIM_Cmd(TIM1, ENABLE);
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/* TIM1 Ö÷Êä³öÊ¹ÄÜ */# V7 Q9 w# J$ F, F6 ~1 D7 w
TIM_CtrlPWMOutputs(TIM1, ENABLE);6 T. ?( L: t0 T: k) {
}