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#include "SWM221.h"
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int main(void)
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{
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PWM_InitStructure PWM_initStruct;
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SystemInit();
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GPIO_Init(GPIOA, PIN4, 1, 0, 0, 0);
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GPIO_Init(GPIOA, PIN5, 1, 0, 0, 0);
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GPIO_Init(GPIOA, PIN8, 1, 0, 0, 0);
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PORT_Init(PORTA, PIN3, PORTA_PIN3_PWM0A, 0);
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PORT_Init(PORTA, PIN2, PORTA_PIN2_PWM0AN, 0);
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PORT_Init(PORTA, PIN6, PORTA_PIN6_PWM0B, 0);
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PORT_Init(PORTA, PIN7, PORTA_PIN7_PWM0BN, 0);
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PWM_initStruct.Mode = PWM_EDGE_ALIGNED;
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PWM_initStruct.Clkdiv = 6; //F_PWM = 30M/6 = 5M
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PWM_initStruct.Period = 10000; //5M/10000 = 500Hz，中心对称模式下频率降低到250Hz
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PWM_initStruct.HdutyA = 2500; //2500/10000 = 25%
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PWM_initStruct.DeadzoneA = 50; //50/5M = 10us
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PWM_initStruct.IdleLevelA = 0;
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PWM_initStruct.IdleLevelAN= 0;
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PWM_initStruct.OutputInvA = 0;
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PWM_initStruct.OutputInvAN= 0;
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PWM_initStruct.HdutyB = 7500; //5000/10000 = 50%
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PWM_initStruct.DeadzoneB = 50; //50/5M = 10us
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PWM_initStruct.IdleLevelB = 0;
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PWM_initStruct.IdleLevelBN= 0;
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PWM_initStruct.OutputInvB = 0;
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PWM_initStruct.OutputInvBN= 0;
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PWM_initStruct.UpOvfIE = 1;
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PWM_initStruct.DownOvfIE = 0;
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PWM_initStruct.UpCmpAIE = 1;
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PWM_initStruct.DownCmpAIE = 0;
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PWM_initStruct.UpCmpBIE = 1;
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PWM_initStruct.DownCmpBIE = 0;
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PWM_Init(PWM0, &PWM_initStruct);
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PWM_Start(PWM0_MSK);
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while(1==1)
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{
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}
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}
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void PWM0_Handler(void)
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{
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if(PWM_IntStat(PWM0, PWM_IT_OVF_UP))
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{
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PWM_IntClr(PWM0, PWM_IT_OVF_UP);
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GPIO_InvBit(GPIOA, PIN8);
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}
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if(PWM_IntStat(PWM0, PWM_IT_CMPA_UP))
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{
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PWM_IntClr(PWM0, PWM_IT_CMPA_UP);
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GPIO_InvBit(GPIOA, PIN4);
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}
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if(PWM_IntStat(PWM0, PWM_IT_CMPB_UP))
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{
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PWM_IntClr(PWM0, PWM_IT_CMPB_UP);
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GPIO_InvBit(GPIOA, PIN5);
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}
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}
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