40 lines
993 B
C
40 lines
993 B
C
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#ifndef DEVICE_TOUCH_KEY_H
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#define DEVICE_TOUCH_KEY_H
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#include "typedef.h"
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#include "asm/plcnt.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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/* =========== touch key API ============= */
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//触摸按键初始化
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int touch_key_init(const struct touch_key_platform_data *touch_key_data);
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//获取触摸按键键值
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u8 touch_key_get_value(void);
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#endif
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