87.2-利用高级PWMA+PWMB实现8个定时器，STC32G12K128实验箱演示程序，STC32G8K64,STC3
87.2-利用高级PWMA+PWMB实现8个定时器，STC32G12K128实验箱演示程序，STC32G8K64,STC32CL8K64主程序main.C代码如下（汇编版本在附件中）：
/*---------------------------------------------------------------------*/
/* --- Web: www.STCMCU.com --------------------------------------------*/
/* --- BBS: www.STCAIMCU.com-----------------------------------------*/
/* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序 */
/*---------------------------------------------------------------------*/
/*************功能说明 **************
本例程基于STC32G12K128为主控芯片的实验箱9进行编写测试.
利用高级PWMA/PWMB中断实现8个定时器功能.
PWMA的时钟频率为 SYSclk/2
PWMA通道1：定时周期 1ms
PWMA通道2：定时周期 2ms
PWMA通道3：定时周期 4ms
PWMA通道4：定时周期 5ms
PWMB的时钟频率为 SYSclk/10000
PWMB通道1：定时周期 1s
PWMB通道2：定时周期 2s
PWMB通道3：定时周期 3s
PWMB通道4：定时周期 4s
下载时, 选择时钟 24MHZ (用户可自行修改频率).
******************************************/
#include "..\comm\STC32G.h"
#include "intrins.h"
#define MAIN_Fosc 24000000L //定义主时钟
#define PSCRA 2
#define PWMA_T1 MAIN_Fosc/PSCRA/1000 //定时周期 1ms(1KHz)
#define PWMA_T2 MAIN_Fosc/PSCRA/500 //定时周期 2ms(500Hz)
#define PWMA_T3 MAIN_Fosc/PSCRA/250 //定时周期 4ms(250Hz)
#define PWMA_T4 MAIN_Fosc/PSCRA/200 //定时周期 5ms(200Hz)
#define PSCRB 10000
#define PWMB_T5 MAIN_Fosc/PSCRB*1 //定时周期 1s
#define PWMB_T6 MAIN_Fosc/PSCRB*2 //定时周期 2s
#define PWMB_T7 MAIN_Fosc/PSCRB*3 //定时周期 3s
#define PWMB_T8 MAIN_Fosc/PSCRB*4 //定时周期 4s
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long u32;
/*****************************************************************************/
void PWMA_Timer();
void PWMB_Timer();
u16 cnt1;
u16 cnt2;
u16 cnt3;
u16 cnt4;
u16 cnt5;
u16 cnt6;
u16 cnt7;
u16 cnt8;
/******************** 主函数 **************************/
void main(void)
{
WTST = 0;//设置程序指令延时参数，赋值为0可将CPU执行指令的速度设置为最快
EAXFR = 1; //扩展寄存器(XFR)访问使能
CKCON = 0; //提高访问XRAM速度
P0M1 = 0x00; P0M0 = 0x00; //设置为准双向口
P1M1 = 0x00; P1M0 = 0x00; //设置为准双向口
P2M1 = 0x00; P2M0 = 0x00; //设置为准双向口
P3M1 = 0x00; P3M0 = 0x00; //设置为准双向口
P4M1 = 0x00; P4M0 = 0x00; //设置为准双向口
P5M1 = 0x00; P5M0 = 0x00; //设置为准双向口
P6M1 = 0x00; P6M0 = 0x00; //设置为准双向口
P7M1 = 0x00; P7M0 = 0x00; //设置为准双向口
PWMA_Timer();
PWMB_Timer();
P40 = 0; //给LED供电
EA = 1; //打开总中断
while (1);
}
//========================================================================
// 函数: void PWMA_Timer()
// 描述: PWMA配置函数.
// 参数: None
// 返回: none.
// 版本: V1.0, 2021-02-08
//========================================================================
void PWMA_Timer()
{
PWMA_PSCRH = (u8)((PSCRA-1) >> 8);//设置预分频器
PWMA_PSCRL = (u8)(PSCRA-1);
PWMA_ARRH = 0xff; //设置周期时间
PWMA_ARRL = 0xff;
PWMA_CCER1 = 0x00;
PWMA_CCMR1 = 0x00;
PWMA_CCMR2 = 0x00;
PWMA_CCMR3 = 0x00;
PWMA_CCMR4 = 0x00;
cnt1 = PWMA_T1;
cnt2 = PWMA_T2;
cnt3 = PWMA_T3;
cnt4 = PWMA_T4;
PWMA_CCR1H = (u8)(cnt1 >> 8);
PWMA_CCR1L = (u8)(cnt1);
PWMA_CCR2H = (u8)(cnt2 >> 8);
PWMA_CCR2L = (u8)(cnt2);
PWMA_CCR3H = (u8)(cnt3 >> 8);
PWMA_CCR3L = (u8)(cnt3);
PWMA_CCR4H = (u8)(cnt4 >> 8);
PWMA_CCR4L = (u8)(cnt4);
PWMA_IER = 0x1e; // 使能中断
PWMA_CR1 |= 0x81; //使能ARR预装载，开始计时
cnt1 += PWMA_T1;
cnt2 += PWMA_T2;
cnt3 += PWMA_T3;
cnt4 += PWMA_T4;
}
//========================================================================
// 函数: void PWMB_Timer()
// 描述: PWMB配置函数.
// 参数: None
// 返回: none.
// 版本: V1.0, 2021-02-08
//========================================================================
void PWMB_Timer()
{
PWMB_PSCRH = (u8)((PSCRB-1) >> 8);//设置预分频器
PWMB_PSCRL = (u8)(PSCRB-1);
PWMB_ARRH = 0xff; //设置周期时间
PWMB_ARRL = 0xff;
PWMB_CCER1 = 0x00;
PWMB_CCMR1 = 0x00; //设置冻结模式
PWMB_CCMR2 = 0x00; //设置冻结模式
PWMB_CCMR3 = 0x00; //设置冻结模式
PWMB_CCMR4 = 0x00; //设置冻结模式
cnt5 = PWMB_T5;
cnt6 = PWMB_T6;
cnt7 = PWMB_T7;
cnt8 = PWMB_T8;
PWMB_CCR5H = (u8)(cnt5 >> 8);
PWMB_CCR5L = (u8)(cnt5);
PWMB_CCR6H = (u8)(cnt6 >> 8);
PWMB_CCR6L = (u8)(cnt6);
PWMB_CCR7H = (u8)(cnt7 >> 8);
PWMB_CCR7L = (u8)(cnt7);
PWMB_CCR8H = (u8)(cnt8 >> 8);
PWMB_CCR8L = (u8)(cnt8);
PWMB_IER = 0x1e; // 使能中断
PWMB_CR1 |= 0x81; //使能ARR预装载，开始计时
cnt5 += PWMB_T5;
cnt6 += PWMB_T6;
cnt7 += PWMB_T7;
cnt8 += PWMB_T8;
}
//========================================================================
// 函数: PWMA_ISR() interrupt 26
// 描述: PWMA中断函数.
// 参数: None
// 返回: none.
// 版本: V1.0, 2020-12-04
//========================================================================
void PWMA_ISR() interrupt 26
{
u8 sr;
sr = PWMA_SR1;
PWMA_SR1 = 0;
if (sr & 0x02)
{
PWMA_CCR1H = (u8)(cnt1 >> 8);
PWMA_CCR1L = (u8)(cnt1);
cnt1 += PWMA_T1;
P20 = ~P20;
P60 = ~P60;
}
if (sr & 0x04)
{
PWMA_CCR2H = (u8)(cnt2 >> 8);
PWMA_CCR2L = (u8)(cnt2);
cnt2 += PWMA_T2;
P21 = ~P21;
P61 = ~P61;
}
if (sr & 0x08)
{
PWMA_CCR3H = (u8)(cnt3 >> 8);
PWMA_CCR3L = (u8)(cnt3);
cnt3 += PWMA_T3;
P22 = ~P22;
P62 = ~P62;
}
if (sr & 0x10)
{
PWMA_CCR4H = (u8)(cnt4 >> 8);
PWMA_CCR4L = (u8)(cnt4);
cnt4 += PWMA_T4;
P23 = ~P23;
P63 = ~P63;
}
}
//========================================================================
// 函数: PWMB_ISR() interrupt 27
// 描述: PWMB中断函数.
// 参数: None
// 返回: none.
// 版本: V1.0, 2020-12-04
//========================================================================
void PWMB_ISR() interrupt 27
{
u8 sr;
sr = PWMB_SR1;
PWMB_SR1 = 0;
if (sr & 0x02)
{
PWMB_CCR5H = (u8)(cnt5 >> 8);
PWMB_CCR5L = (u8)(cnt5);
cnt5 += PWMB_T5;
P24 = ~P24;
P64 = ~P64;
}
if (sr & 0x04)
{
PWMB_CCR6H = (u8)(cnt6 >> 8);
PWMB_CCR6L = (u8)(cnt6);
cnt6 += PWMB_T6;
P25 = ~P25;
P65 = ~P65;
}
if (sr & 0x08)
{
PWMB_CCR7H = (u8)(cnt7 >> 8);
PWMB_CCR7L = (u8)(cnt7);
cnt7 += PWMB_T7;
P26 = ~P26;
P66 = ~P66;
}
if (sr & 0x10)
{
PWMB_CCR8H = (u8)(cnt8 >> 8);
PWMB_CCR8L = (u8)(cnt8);
cnt8 += PWMB_T8;
P27 = ~P27;
P67 = ~P67;
}
}
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