大家好，又有一个问题，我想实现 TPM0 的CH1 与 CH2 输出电平互补的边沿对齐 PWM，且 CH1 与 TPM1 的 CH0 与 CH1 相连，经 TPM1 输入捕捉后，获得 PWM 的脉宽。外部PTA12和PTA13已经与PTC2相连接。
程序大约是例程，但是TMP0和1都不进中断，好像tmp0和1都没有启动啊，为什么，
////////////////////////////////////////////////////////////////////////////////
// Definitions
////////////////////////////////////////////////////////////////////////////////
#define TPM_MOD_1TO10 0x1E0
uint16_t u16PWMDuty = TPM_MOD_1TO10*2;
////////////////////////////////////////////////////////////////////////////////
// Code
////////////////////////////////////////////////////////////////////////////////
void SIM_Init(void)
{
SIM_SOPT2 |= SIM_SOPT2_TPMSRC(1);
SIM_SOPT2 &= ~SIM_SOPT2_PLLFLLSEL_MASK;
SIM_SCGC5 |= SIM_SCGC5_PORTA_MASK| SIM_SCGC5_PORTC_MASK;
SIM_SCGC6 |= SIM_SCGC6_TPM0_MASK| SIM_SCGC6_TPM1_MASK;
}
void TPM0_Init(void)
{
NVIC_EnableIRQ(TPM0_IRQn);
TPM0_CNT = 0;
TPM0_MOD = 0x12C0;
TPM0_SC = TPM_SC_TOIE_MASK|TPM_SC_CMOD(1);
TPM0_C1SC = TPM_CnSC_MSB_MASK| TPM_CnSC_ELSB_MASK;
TPM0_C1V = 0x00;
TPM0_C2SC = TPM_CnSC_MSB_MASK| TPM_CnSC_ELSA_MASK;
TPM0_C2V = 0x00;
}
void TPM1_Init(void)
{
NVIC_EnableIRQ(TPM1_IRQn);
TPM1_CONF = TPM_CONF_TRGSEL(8)|TPM_CONF_CSOO_MASK|TPM_CONF_CSOT_MASK;
TPM1_CNT = 0;
TPM1_MOD = 0x2BC0;
TPM1_SC = TPM_SC_TOIE_MASK|TPM_SC_CMOD(1);
TPM1_C0SC = TPM_CnSC_ELSA_MASK;
TPM1_C0V = 0x00;
TPM1_C1SC = TPM_CnSC_ELSB_MASK;
TPM1_C1V = 0x00;
}
int main (void)
{
hardware_init(); //config pee. enable all port clock;
PORTA_PCR12 = PORT_PCR_ISF_MASK |PORT_PCR_MUX(0x3); //config PTA12,13 as TPM1 Ch0,1
PORTA_PCR13 = PORT_PCR_ISF_MASK |PORT_PCR_MUX(0x3);
PORTC_PCR2 = PORT_PCR_ISF_MASK |PORT_PCR_MUX(0x4)| PORT_PCR_DSE_MASK;
SIM_Init();
TPM0_Init();
TPM1_Init();
while(1);
}
void TPM0_IRQHandler(void)
{
TPM0_SC |= TPM_SC_TOF_MASK;
TPM0_C1V = (uint16_t)u16PWMDuty;
TPM0_C2V = (uint16_t)u16PWMDuty;
}
void TPM1_IRQHandler(void)
{
TPM1_SC |= TPM_SC_TOF_MASK;
TPM1_C0SC |= TPM_CnSC_CHF_MASK;
TPM1_C1SC |= TPM_CnSC_CHF_MASK;
//断点查看pwmm脉宽值
}
