杰里之692N 三路 PWM 的设置方法篇

1、默认的 TIMER 对应的 PWM 输出的 IO 口,
PWM0–TIMER0–PA1
PWM1–TIMER1–PA4
PWM2–TIMER2–PB3
PWM3–TIMER3–PB4
PWM 不通过 OUTPUTCHANNEL 设置的时候，PWM 从默认的 IO 口输出



static void set_timer3_pwm(u32 fre, u8 duty)
{
SFR(JL_IOMAP->CON1, 8, 4, 15);// CHANNEL0, 对应输出 IO 口的 OUT:0,DIE:0
JL_TIMER3->CON = 0x0000;
JL_TIMER3->PRD = OSC_Hz / (4 * fre);
JL_TIMER3->PWM = (JL_TIMER3->PRD * duty) / 100;
JL_TIMER3->CON = (1 << 4) | (1 << 8) | (1 << 0) | (2 << 2);
JL_PORTA->PU |= BIT(13);
JL_PORTA->PD |= BIT(13);
JL_PORTA->DIR &= ~BIT(13);
JL_PORTA->OUT &= ~BIT(13);
JL_PORTA->DIE &= ~BIT(13);
}
static void set_timer2_pwm(u32 fre, u8 duty)
{
SFR(JL_IOMAP->CON3, 24, 4, 14);//CHANNEL2,对应输出 IO 口的 OUT:1,DIE:0
JL_TIMER2->CON = 0x0000;
JL_TIMER2->PRD = OSC_Hz / (4 * fre);
JL_TIMER2->PWM = (JL_TIMER2->PRD * duty) / 100;
JL_TIMER2->CON = (1 << 4) | (1 << 8) | (1 << 0) | (2 << 2);
JL_PORTB->PU |= BIT(13);
JL_PORTB->PD |= BIT(13);
JL_PORTB->DIR &= ~BIT(13);
JL_PORTB->OUT |= BIT(13);
JL_PORTB->DIE &= ~BIT(13);
}