rt-thread-official/bsp/ls1cdev/libraries/ls1c_pwm.h

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#ifndef __OPENLOONGSON_PWM_H
#define __OPENLOONGSON_PWM_H
// pwm引脚定义
#define LS1C_PWM0_GPIO06 (6) // gpio06用作pwm0
#define LS1C_PWM0_GPIO04 (4) // gpio04复用为pwm0
#define LS1C_PWM1_GPIO92 (92) // gpio92用作pwm1
#define LS1C_PWM1_GPIO05 (5) // gpio05复用为pwm1
#define LS1C_PWM2_GPIO52 (52) // gpio52复用为pwm2
#define LS1C_PWM2_GPIO46 (46) // gpio46复用为pwm2
#define LS1C_PWM3_GPIO47 (47) // gpio47复用为pwm3
#define LS1C_PWM3_GPIO53 (53) // gpio53复用为pwm3
// ...还有一些gpio可以复用为gpio的有需要可以自己添加
// pwm控制寄存器的每个bit
#define LS1C_PWM_INT_LRC_EN (11) // 低脉冲计数器中断使能
#define LS1C_PWM_INT_HRC_EN (10) // 高脉冲计数器中断使能
#define LS1C_PWM_CNTR_RST (7) // 使能CNTR计数器清零
#define LS1C_PWM_INT_SR (6) // 中断状态位
#define LS1C_PWM_INTEN (5) // 中断使能位
#define LS1C_PWM_SINGLE (4) // 单脉冲控制位
#define LS1C_PWM_OE (3) // 脉冲输出使能
#define LS1C_PWM_CNT_EN (0) // 主计数器使能
// 硬件pwm工作模式
enum
{
// 正常模式--连续输出pwm波形
PWM_MODE_NORMAL = 0,
// 单脉冲模式每次调用只发送一个脉冲调用间隔必须大于pwm周期
PWM_MODE_PULSE
};
// 硬件pwm信息
typedef struct
{
unsigned int gpio; // PWMn所在的gpio
unsigned int mode; // 工作模式(单脉冲、连续脉冲)
float duty; // pwm的占空比
unsigned long period_ns; // pwm周期(单位ns)
}pwm_info_t;
/*
* 初始化PWMn
* @pwm_info PWMn的详细信息
*/
void pwm_init(pwm_info_t *pwm_info);
/*
* 禁止pwm
* @pwm_info PWMn的详细信息
*/
void pwm_disable(pwm_info_t *pwm_info);
/*
* 使能PWM
* @pwm_info PWMn的详细信息
*/
void pwm_enable(pwm_info_t *pwm_info);
#endif