55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
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#ifndef _PLCNT_DRV_H_
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#define _PLCNT_DRV_H_
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//计数参考时钟选择, 频率越高, 精度越高
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enum touch_key_clk {
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TOUCH_KEY_OSC_CLK = 0,
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TOUCH_KEY_MUX_IN_CLK, //外部输入, ,一般不用, 保留
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TOUCH_KEY_PLL_192M_CLK,
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TOUCH_KEY_PLL_240M_CLK,
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};
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struct touch_key_port {
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u8 port; //触摸按键IO
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u8 key_value; //按键返回值
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};
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struct touch_key_platform_data {
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u8 num; //触摸按键个数;
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u8 clock; //触摸按键选择时钟;
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u8 change_gain; //变化放大倍数
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s16 press_cfg; //按下判决门限
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s16 release_cfg0; //释放判决门限0
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s16 release_cfg1; //释放判决门限1
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const struct touch_key_port *port_list; //触摸按键列表
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};
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#define TOUCH_KEY_CH_MAX 3
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typedef struct _CTM_KEY_VAR {
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s32 touch_release_buf[TOUCH_KEY_CH_MAX]; //按键释放值滤波器buffer
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u16 touch_cnt_buf[TOUCH_KEY_CH_MAX]; //按键计数值滤波器buffer
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s16 FLT1CFG1; //滤波器1配置参数1
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s16 FLT1CFG2; //滤波器1配置参数2, 等于(-RELEASECFG0)<<FLT1CFG0
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s16 PRESSCFG; //按下判决门限
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s16 RELEASECFG0; //释放判决门限0
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s16 RELEASECFG1; //释放判决门限1
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s8 FLT0CFG; //滤波器0配置参数(0/1/2/3)
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s8 FLT1CFG0; //滤波器1配置参数0
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u16 touch_key_state; //按键状态标志，随时可能被中断改写，按键处理程序需要将此标志复制出来再行处理
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u8 touch_init_cnt[TOUCH_KEY_CH_MAX]; //初始化计数器，非0时进行初始化
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} sCTM_KEY_VAR;
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/* =========== pclcnt API ============= */
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//plcnt 初始化
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int plcnt_init(void *_data);
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//获取plcnt按键状态
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u8 get_plcnt_value(void);
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#endif /* _PLCNT_DRV_H_ */
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