| 提交 | 用户 | age | ||
| 5dd1b7 | 1 | #include "STC15F2K60S2.H" |
| Q | 2 | |
| 3 | void CCP_PWMInit(void) //初始化PCA（Programmable Counter Array）模块作为PWM输出 | |
| 4 | { | |
| 5 | CCON = 0; //PCA控制寄存器初始化(xx-- -xxx，0000 0000：都是清零就完事了) | |
| 6 | CMOD = 0x02; //PCA工作模式寄存器(x--- xxxx，0000 0010：系统时钟，SYSclk/2) | |
| 7 | CL = 0; //PCA计数器低8位清零 | |
| 8 | CH = 0; //PCA计数器高8位清零 | |
| 9 | ||
| 10 | AUXR1 = 0x00; //辅助寄存器1清零，初始化 | |
| 11 | PCA_PWM0 = 0x00; //PCA的PWM寄存器(xx-- --xx，0000 0000：工作于8 bit PWM) | |
| 12 | CCAP0H = 0x80; //比较/捕获寄存器0高8位设置为 0x80，表示PWM1的重装载值的高8位 | |
| 13 | CCAP0L = 0x80; //比较/捕获寄存器0低8位设置为 0x80，表示PWM1的重装载值的低8位 | |
| 14 | CCAPM0 = 0x42; //比较/捕获工作模式寄存器0(-xxx xxxx，0100 0010：比较器打开，CCP0脚用作PWM输出) | |
| 15 | ||
| 16 | AUXR1 = 0x00; | |
| 17 | PCA_PWM1 = 0x00; | |
| 18 | CCAP1H = 0x80; //256-x/256 = pulse width | |
| 19 | CCAP1L = 0x80; | |
| 20 | CCAPM1 = 0x42; //比较器打开，CCP1脚用作PWM输出 | |
| 21 | CR = 1; //启动PCA计数器 | |
| 22 | } | |
| 23 | ||
| 24 | void PWMInit(void) | |
| 25 | { | |
| 26 | //该芯片增强型 PWM 输出端口：1.6 1.7 2.1 2.2 2.3 3.7 | |
| 27 | P1M0 &= ~0xc0; //将 0011 1111 与 P1M0 进行位与运算，清零 P1M0 的高2位，结合P1M1，P1.6 P1.7引脚配置更改为准双向口，其他脚开漏 | |
| 28 | //P1M0 &= 0x3f | |
| 29 | P1M1 &= ~0xc0; //P1M1_P1M0状态(同一位置两个寄存器的数值组合)：00：准双向；01：推挽；10：高阻；11：开漏 | |
| 30 | P1 &= ~0xc0; //resetP1.6/.P1.7 | |
| 31 | P2M0 &= ~0x0e; //1111 0001 | |
| 32 | P2M1 &= ~0x0e; | |
| 33 | P2 &= ~0x0e; | |
| 34 | P3M0 &= ~0x80; //0111 1111 | |
| 35 | P3M1 &= ~0x80; | |
| 36 | P3 &= ~0x80; | |
| 37 | ||
| 38 | P_SW2 |= 0x80; //使能访问XSFR | |
| 39 | PWMCFG = 0x3f; //配置PWM的初始电平为 high | |
| 40 | PWMCKS = 0x00; //选择PWM的时钟Fosc/(0+1) 22118400/1024=21.6k | |
| 41 | //PWMCKS = 0x07; //选择PWM的时钟Fosc/(8) 22118400/1000/8=2.76k | |
| 42 | PWMC = CYCLE; //设置PWM的周期 | |
| 43 | ||
| 44 | //-----PWM2-------------------------------- | |
| 45 | PWM2T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 46 | PWM2T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 47 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 48 | PWM2CR = 0x00; //选择PWM2输出到P3.7,不使能PWM2中断 | |
| 49 | //-------PWM3----------------------------- | |
| 50 | PWM3T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 51 | PWM3T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 52 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 53 | PWM3CR = 0x00; //选择PWM2输出到P2.1,不使能PWM2中断 | |
| 54 | //--------pwm4---------------------------------- | |
| 55 | PWM4T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 56 | PWM4T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 57 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 58 | PWM4CR = 0x00; //选择PWM2输出到P2.2,不使能PWM2中断 | |
| 59 | //--------pwm5---------------------------------- | |
| 60 | PWM5T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 61 | PWM5T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 62 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 63 | PWM5CR = 0x00; //选择PWM2输出到P2.3,不使能PWM2中断 | |
| 64 | //--------pwm6---------------------------------- | |
| 65 | PWM6T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 66 | PWM6T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 67 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 68 | PWM6CR = 0x00; //选择PWM2输出到P1.6,不使能PWM2中断 | |
| 69 | ||
| 70 | //--------pwm7---------------------------------- | |
| 71 | PWM7T1 = 0x0001; //设置PWM第1次翻转的PWM计数 | |
| 72 | PWM7T2 = CYCLE * 2L / 100; //设置PWM第2次翻转的PWM计数 | |
| 73 | //占空比(PWM2T2-PWM2T1)/PWMC | |
| 74 | PWM7CR = 0x00; //选择PWM2输出到P1.7,不使能PWM2中断 | |
| 75 | ||
| 76 | PWMCR = 0x3f; //使能PWM2.3.4.5.6.7,6路信号输出 | |
| 77 | PWMCR |= 0x80; //使能PWM模块 | |
| 78 | //PWMCR |= 0x40; //使能PWM归零中断 | |
| 79 | P_SW2 &= ~0x80; | |
| 80 | } | |
| 81 | //----------pwm2/3/4/5------------------------------------------------------------------- | |
| 82 | void pwm2( unsigned short Wide) //PWM2 | |
| 83 | { | |
| 84 | if((Wide==0)||(Wide==1)) | |
| 85 | { | |
| 86 | P_SW2 |= 0x80; //设置辅助寄存器2的位7为1，将PWM2引脚切换到P1.3 | |
| 87 | PWMCR &=~0x01; //PWM控制寄存器的位0清零，即禁用PWM2 | |
| 88 | PWM2=1; //PWM控制寄存器的位0清零，即禁用PWM2 | |
| 89 | P_SW2 &=~0x80; //清除辅助寄存器2的位7，将PWM2引脚切换回原来的位置 | |
| 90 | } | |
| 91 | else if (Wide==CYCLE) | |
| 92 | { | |
| 93 | PWMCR &=~0x01; //PWM控制寄存器的位0清零，即禁用PWM2 | |
| 94 | PWM2=0; //PWM2引脚置为低电平 | |
| 95 | } | |
| 96 | else | |
| 97 | { | |
| 98 | P_SW2 |= 0x80; //设置辅助寄存器2的位7为1，将PWM2引脚切换到P1.3 | |
| 99 | PWM2T1 = 0x01; //PWM2定时器1寄存器的值设置为0x01 | |
| 100 | PWM2T2 = Wide; //PWM2定时器2寄存器的值设置为 Wide | |
| 101 | PWMCR |= 0x01; //PWM控制寄存器的位0置为1，即启用PWM2 | |
| 102 | P_SW2 &=~0x80; //清除辅助寄存器2的位7，将PWM2引脚切换回原来的位置 | |
| 103 | ||
| 104 | } | |
| 105 | ||
| 106 | } | |
| 107 | void pwm3(unsigned short Wide) //PWM3 | |
| 108 | { | |
| 109 | if((Wide==0)||(Wide==1)) | |
| 110 | { | |
| 111 | P_SW2 |= 0x80; | |
| 112 | PWMCR &=~0x02; | |
| 113 | PWM3=1; | |
| 114 | P_SW2 &=~0x80; | |
| 115 | ||
| 116 | } | |
| 117 | else if(Wide==CYCLE) | |
| 118 | { | |
| 119 | PWMCR &=~0x02; | |
| 120 | PWM3=0; | |
| 121 | } | |
| 122 | else | |
| 123 | { | |
| 124 | P_SW2 |= 0x80; | |
| 125 | PWMCFG = 0x3f; //配置PWM的初始电平为 high | |
| 126 | PWM3T1 =0x01 ; | |
| 127 | PWM3T2 =Wide; | |
| 128 | P_SW2 &=~0x80; | |
| 129 | PWMCR |= 0x02; | |
| 130 | ||
| 131 | } | |
| 132 | } | |
| 133 | void pwm4(unsigned short Wide) //PWM4 | |
| 134 | { | |
| 135 | if((Wide==0)||(Wide==1)) | |
| 136 | { | |
| 137 | P_SW2 |= 0x80; | |
| 138 | PWMCR &=~0x04; | |
| 139 | PWM4=1; | |
| 140 | P_SW2 &=~0x80; | |
| 141 | } | |
| 142 | else if (Wide==CYCLE) | |
| 143 | { | |
| 144 | PWMCR &=~0x04; | |
| 145 | PWM4=0; | |
| 146 | } | |
| 147 | else | |
| 148 | { | |
| 149 | P_SW2 |= 0x80; | |
| 150 | PWM4T1 = 0x01; | |
| 151 | PWM4T2 = Wide; | |
| 152 | P_SW2 &=~0x80; | |
| 153 | PWMCR |= 0x04; | |
| 154 | ||
| 155 | } | |
| 156 | } | |
| 157 | void pwm5(unsigned short Wide) //PWM5 | |
| 158 | { | |
| 159 | if((Wide==0)||(Wide==1)) | |
| 160 | { | |
| 161 | P_SW2 |= 0x80; | |
| 162 | PWMCR &=~0x08; | |
| 163 | PWM5=1; | |
| 164 | P_SW2 &=~0x80; | |
| 165 | ||
| 166 | } | |
| 167 | else if (Wide==CYCLE) | |
| 168 | { | |
| 169 | PWMCR &=~0x08; | |
| 170 | PWM5=0; | |
| 171 | } | |
| 172 | else | |
| 173 | { | |
| 174 | P_SW2 |= 0x80; | |
| 175 | PWM5T1 = 0x01; | |
| 176 | PWM5T2 = Wide; | |
| 177 | P_SW2 &=~0x80; | |
| 178 | PWMCR |= 0x08; | |
| 179 | ||
| 180 | } | |
| 181 | } | |
