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初始化仓库

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lhye200
2025-08-31 21:37:24 +08:00
commit 7477a25070
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Source/pwm.c Normal file
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#include "pwm.h"
#include "gpio.h"
//捕获比较模式寄存器
const uint32 PWM_CCMR_ADDR[] = {0x7efec8, 0x7efec9, 0x7efeca ,0x7efecb,
0x7efee8, 0x7efee9, 0x7efeea, 0x7efeeb};
//捕获比较使能寄存器
const uint32 PWM_CCER_ADDR[] = {0x7efecc, 0x7efecd,
0x7efeec ,0x7efeed};
//控制寄存器,高8位地址 低8位地址 + 1即可
const uint32 PWM_CCR_ADDR[] = {0x7efed5, 0x7efed7, 0x7efed9, 0x7efedb,
0x7efef5, 0x7efef7, 0x7efef9, 0x7efefb};
//控制寄存器,高8位地址 低8位地址 + 1即可
const uint32 PWM_ARR_ADDR[] = {0x7efed2,0x7efef2};
//-------------------------------------------------------------------------------------------------------------------
// @brief PWM_gpio初始化（内部使用用户无需关心）
// @param pwmch PWM通道号及引脚
// @return void
// Sample usage:
//-------------------------------------------------------------------------------------------------------------------
void pwm_set_gpio(PWMCH_enum pwmch)
{
switch(pwmch)
{
case PWMA_CH1P_P10:
{
gpio_mode(P1_0,GPO_PP);
break;
}
case PWMA_CH1N_P11:
{
gpio_mode(P1_1,GPO_PP);
break;
}
case PWMA_CH1P_P20:
{
gpio_mode(P2_0,GPO_PP);
break;
}
case PWMA_CH1N_P21:
{
gpio_mode(P2_1,GPO_PP);
break;
}
case PWMA_CH1P_P60:
{
gpio_mode(P6_0,GPO_PP);
break;
}
case PWMA_CH1N_P61:
{
gpio_mode(P6_1,GPO_PP);
break;
}
case PWMA_CH2P_P12:
{
gpio_mode(P1_2,GPO_PP);
break;
}
case PWMA_CH2N_P13:
{
gpio_mode(P1_3,GPO_PP);
break;
}
case PWMA_CH2P_P22:
{
gpio_mode(P2_2,GPO_PP);
break;
}
case PWMA_CH2N_P23:
{
gpio_mode(P2_3,GPO_PP);
break;
}
case PWMA_CH2P_P62:
{
gpio_mode(P6_2,GPO_PP);
break;
}
case PWMA_CH2N_P63:
{
gpio_mode(P6_3,GPO_PP);
break;
}
case PWMA_CH3P_P14:
{
gpio_mode(P1_4,GPO_PP);
break;
}
case PWMA_CH3N_P15:
{
gpio_mode(P1_5,GPO_PP);
break;
}
case PWMA_CH3P_P24:
{
gpio_mode(P2_4,GPO_PP);
break;
}
case PWMA_CH3N_P25:
{
gpio_mode(P2_5,GPO_PP);
break;
}
case PWMA_CH3P_P64:
{
gpio_mode(P6_4,GPO_PP);
break;
}
case PWMA_CH3N_P65:
{
gpio_mode(P6_5,GPO_PP);
break;
}
case PWMA_CH4P_P16:
{
gpio_mode(P1_6,GPO_PP);
break;
}
case PWMA_CH4N_P17:
{
gpio_mode(P1_7,GPO_PP);
break;
}
case PWMA_CH4P_P26:
{
gpio_mode(P2_6,GPO_PP);
break;
}
case PWMA_CH4N_P27:
{
gpio_mode(P2_7,GPO_PP);
break;
}
case PWMA_CH4P_P66:
{
gpio_mode(P6_6,GPO_PP);
break;
}
case PWMA_CH4N_P67:
{
gpio_mode(P6_7,GPO_PP);
break;
}
case PWMA_CH4P_P34:
{
gpio_mode(P3_4,GPO_PP);
break;
}
case PWMA_CH4N_P33:
{
gpio_mode(P3_3,GPO_PP);
break;
}
case PWMB_CH1_P20:
{
gpio_mode(P2_0,GPO_PP);
break;
}
case PWMB_CH1_P17:
{
gpio_mode(P1_7,GPO_PP);
break;
}
case PWMB_CH1_P00:
{
gpio_mode(P0_0,GPO_PP);
break;
}
case PWMB_CH1_P74:
{
gpio_mode(P7_4,GPO_PP);
break;
}
case PWMB_CH2_P21:
{
gpio_mode(P2_1,GPO_PP);
break;
}
case PWMB_CH2_P54:
{
gpio_mode(P5_4,GPO_PP);
break;
}
case PWMB_CH2_P01:
{
gpio_mode(P0_1,GPO_PP);
break;
}
case PWMB_CH2_P75:
{
gpio_mode(P7_5,GPO_PP);
break;
}
case PWMB_CH3_P22:
{
gpio_mode(P2_2,GPO_PP);
break;
}
case PWMB_CH3_P33:
{
gpio_mode(P3_3,GPO_PP);
break;
}
case PWMB_CH3_P02:
{
gpio_mode(P0_2,GPO_PP);
break;
}
case PWMB_CH3_P76:
{
gpio_mode(P7_6,GPO_PP);
break;
}
case PWMB_CH4_P23:
{
gpio_mode(P2_3,GPO_PP);
break;
}
case PWMB_CH4_P34:
{
gpio_mode(P3_4,GPO_PP);
break;
}
case PWMB_CH4_P03:
{
gpio_mode(P0_3,GPO_PP);
break;
}
case PWMB_CH4_P77:
{
gpio_mode(P7_7,GPO_PP);
break;
}
}
}
//-------------------------------------------------------------------------------------------------------------------
// @brief PWM初始化
// @param pwmch PWM通道号及引脚
// @param freq PWM频率(10Hz-3MHz)
// @param duty PWM占空比
// @return void
// Sample usage:
// pwm_init(PWM0_P00, 100, 5000); //初始化PWM0 使用引脚P0.0 输出PWM频率100HZ 占空比为百分之 5000/PWM_DUTY_MAX*100
// PWM_DUTY_MAX在zf_pwm.h文件中 默认为10000
//-------------------------------------------------------------------------------------------------------------------
void pwm_init(PWMCH_enum pwmch,uint32 freq, uint32 duty)
{
uint32 match_temp;
uint32 period_temp;
uint16 freq_div = 0;
P_SW2 |= 0x80;
//GPIO需要设置为推挽输出
pwm_set_gpio(pwmch);
//分频计算，周期计算，占空比计算
freq_div = (sys_clk / freq) >> 16; //多少分频
period_temp = sys_clk / freq ;
period_temp = period_temp / (freq_div + 1) - 1; //周期
if(duty != PWM_DUTY_MAX)
{
match_temp = period_temp * ((float)duty / PWM_DUTY_MAX); // 占空比
}
else
{
match_temp = period_temp + 1; // duty为100%
}
if(PWMB_CH1_P20 <= pwmch) //PWM5-8
{
//通道选择，引脚选择
PWMB_ENO |= (1 << ((2 * ((pwmch >> 4) - 4)))); //使能通道
PWMB_PS |= ((pwmch & 0x03) << ((2 * ((pwmch >> 4) - 4)))); //输出脚选择
// 配置通道输出使能和极性
(*(unsigned char volatile far *) (PWM_CCER_ADDR[pwmch>>5])) |= (uint8)(1 << (((pwmch >> 4) & 0x01) * 4));
//设置预分频
PWMB_PSCRH = (uint8)(freq_div>>8);
PWMB_PSCRL = (uint8)freq_div;
PWMB_BKR = 0x80; //主输出使能 相当于总开关
PWMB_CR1 = 0x01; //PWM开始计数
}
else
{
PWMA_ENO |= (1 << (pwmch & 0x01)) << ((pwmch >> 4) * 2); //使能通道
PWMA_PS |= ((pwmch & 0x07) >> 1) << ((pwmch >> 4) * 2); //输出脚选择
// 配置通道输出使能和极性
(*(unsigned char volatile far *) (PWM_CCER_ADDR[pwmch>>5])) |= (1 << ((pwmch & 0x01) * 2 + ((pwmch >> 4) & 0x01) * 0x04));
//设置预分频
PWMA_PSCRH = (uint8)(freq_div>>8);
PWMA_PSCRL = (uint8)freq_div;
PWMA_BKR = 0x80; // 主输出使能 相当于总开关
PWMA_CR1 = 0x01; //PWM开始计数
}
//周期
(*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6])) = (uint8)(period_temp>>8); //高8位
(*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6] + 1)) = (uint8)period_temp; //低8位
//设置捕获值|比较值
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4])) = match_temp>>8; //高8位
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4] + 1)) = (uint8)match_temp; //低8位
//功能设置
(*(unsigned char volatile far *) (PWM_CCMR_ADDR[pwmch>>4])) |= 0x06<<4; //设置为PWM模式1
(*(unsigned char volatile far *) (PWM_CCMR_ADDR[pwmch>>4])) |= 1<<3; //开启PWM寄存器的预装载功
// P_SW2 &= 0x7F;
}
//-------------------------------------------------------------------------------------------------------------------
// @brief PWM占空比设置
// @param pwmch PWM通道号及引脚
// @param duty PWM占空比
// @return void
// Sample usage: pwm_duty(PWM0_P00, 5000); //初始化PWM0 使用引脚P0.0 输出PWM频率50HZ 占空比为百分之 5000/PWM_DUTY_MAX*100
// PWM_DUTY_MAX在fsl_pwm.h文件中 默认为10000
//-------------------------------------------------------------------------------------------------------------------
void pwm_duty(PWMCH_enum pwmch, uint32 duty)
{
uint32 match_temp;
uint32 arr = ((*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6]))<<8) | (*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6] + 1 ));
// P_SW2 |= 0x80;
if(duty != PWM_DUTY_MAX)
{
match_temp = arr * ((float)duty/PWM_DUTY_MAX); //占空比
}
else
{
match_temp = arr + 1;
}
//设置捕获值|比较值
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4])) = match_temp>>8; //高8位
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4] + 1)) = (uint8)match_temp; //低8位
// P_SW2 &= ~0x80;
}
//-------------------------------------------------------------------------------------------------------------------
// @brief PWM频率设置
// @param pwmch PWM通道号及引脚
// @param freq PWM频率(10Hz-3MHz)
// @param duty PWM占空比
// @return void
// Sample usage: pwm_freq(PWM0_P00, 50, 5000); //修改化PWM0 使用引脚P0.0 输出PWM频率50HZ 占空比为百分之 5000/PWM_DUTY_MAX*100
//-------------------------------------------------------------------------------------------------------------------
void pwm_freq(PWMCH_enum pwmch, uint32 freq, uint32 duty)
{
uint32 match_temp;
uint32 period_temp;
uint16 freq_div = 0;
//分频计算，周期计算，占空比计算
freq_div = (sys_clk / freq) >> 16; // 多少分频
period_temp = sys_clk / freq;
period_temp = period_temp / (freq_div + 1) - 1; // 周期
if(duty != PWM_DUTY_MAX)
{
match_temp = period_temp * ((float)duty / PWM_DUTY_MAX); // 占空比
}
else
{
match_temp = period_temp + 1; // duty为100%
}
// P_SW2 |= 0x80;
if(PWMB_CH1_P20 <= pwmch) //PWM5-8
{
//设置预分频
PWMB_PSCRH = (uint8)(freq_div>>8);
PWMB_PSCRL = (uint8)freq_div;
}
else
{
//设置预分频
PWMA_PSCRH = (uint8)(freq_div>>8);
PWMA_PSCRL = (uint8)freq_div;
}
//周期
(*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6])) = (uint8)(period_temp>>8); //高8位
(*(unsigned char volatile far *) (PWM_ARR_ADDR[pwmch>>6] + 1)) = (uint8)period_temp; //低8位
//设置捕获值|比较值
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4])) = match_temp>>8; //高8位
(*(unsigned char volatile far *) (PWM_CCR_ADDR[pwmch>>4] + 1)) = (uint8)match_temp; //低8位
// P_SW2 &= ~0x80;
}