70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
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#ifndef _MCPWM_H_
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#define _MCPWM_H_
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#include "typedef.h"
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/* 对齐方式选择 */
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typedef enum {
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pwm_edge_aligned, ///< 边沿对齐模式
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pwm_center_aligned, ///< 中心对齐模式
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} pwm_aligned_mode_type;
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/* pwm通道选择 */
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typedef enum {
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pwm_ch0,
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pwm_ch1,
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pwm_ch2,
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pwm_ch3,
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pwm_ch4,
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pwm_ch5,
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pwm_ch_max,
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} pwm_ch_num_type;
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/* pwm timer通道选择 */
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typedef enum {
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pwm_timer0,
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pwm_timer1,
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pwm_timer2,
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pwm_timer3,
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pwm_timer4,
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pwm_timer5,
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pwm_timer_max,
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} pwm_timer_num_type;
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/* MCPWM TIMER寄存器 */
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typedef struct _pwm_timer_reg {
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volatile u32 tmr_con;
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volatile u32 tmr_cnt;
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volatile u32 tmr_pr;
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} PWM_TIMER_REG;
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/* MCPWM通道寄存器 */
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typedef struct _pwm_ch_reg {
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volatile u32 ch_con0;
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volatile u32 ch_con1;
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volatile u32 ch_cmph;
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volatile u32 ch_cmpl;
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} PWM_CH_REG;
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/* 初始化要用的参数结构体 */
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struct pwm_platform_data {
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u32 frequency; ///< 初始共同频率，CH0, CH, CH2, CH3, CH4
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pwm_ch_num_type pwm_ch_num; ///< 选择pwm通道
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pwm_timer_num_type pwm_timer_num; ///< 选择timer时基
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u16 duty; ///< 初始占空比，0~10000 对应 0%~100% 。每个通道可以有不同的占空比。互补模式的占空比体现在高引脚的波形上。
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pwm_aligned_mode_type pwm_aligned_mode; ///< PWM对齐方式选择
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u8 h_pin; ///< 一个通道的高引脚，建议选择硬件引脚。填入-1 表示没有此引脚。当选择非硬件引脚时，不仅该引脚会输出波形，对应的硬件引脚也会有波形输出。
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u8 l_pin; ///< 一个通道的低引脚，建议选择硬件引脚。填入-1 表示没有此引脚。当选择非硬件引脚时，不仅该引脚会输出波形，对应的硬件引脚也会有波形输出。
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u8 h_pin_output_ch_num; ///< 当高引脚选择了非硬件引脚时，该参数才有效。选用第几个gpio_output_channle, 值：0~2。
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u8 l_pin_output_ch_num; ///< 当高引脚选择了非硬件引脚时，该参数才有效。选用第几个gpio_output_channle, 值：0~2。不能与h_pin_output_ch_num的值一样。
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u8 complementary_en; ///< 该通道的两个引脚输出的波形是否需要互补。1: 同步， 0: 互补
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};
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#endif
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