CH552/project/examples/TouchKey/TouchKey.H
2019-04-04 17:42:35 +08:00

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C
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#define INTERRUPT_TouchKey 0 //开启TouchKey中断方式
#define KEY_FIRST 0 //采样起始通道
#define KEY_LAST 3 //采样结束通道
#define KEY_ACT 20 //按键按下,通道采样值减小,该值减小,灵敏度高,该值增大,灵敏度低
#define KEY_BASE_SAMPLE_TIME 5 //采样基准值采样次数,为了取到稳定的通道基准值
extern UINT16 KeyFree[KEY_LAST-KEY_FIRST+1]; //触摸空闲值存储,用于比较按键状态,如果采样值小于基准值表明按键按下
extern UINT8V KeyBuf; //触摸按键状态为0表示无按键为1表示当前检测按键被按下
#define TouchKeyOFF() {TKEY_CTRL &= 0xF8;} //关闭电容检测仅作1ms或者2ms定时中断
#define TouchKeyON_NoChannel() {TKEY_CTRL = TKEY_CTRL & 0xF8 | 7;} //开启电容检测,但是不连接通道
#define TouchKeyQueryCyl1ms() {TKEY_CTRL &= ~bTKC_2MS;} //触摸按键采样周期设置1ms
#define TouchKeyQueryCyl2ms() {TKEY_CTRL |= bTKC_2MS;} //触摸按键采样周期设置2ms
/*******************************************************************************
* Function Name : TouchKeyChannelSelect(UINT8 ch)
* Description : 触摸按键通道选择
* Input : UINT8 ch 采用通道
0: 关闭电容检测仅作1ms或者2ms定时中断
1~6 分别代表采样通道
7: 开启电容检测,但是不连接通道
* Output : None
* Return : 成功 SUCCESS
失败 FAIL
*******************************************************************************/
UINT8 TouchKeyChannelSelect(UINT8 ch);
/*******************************************************************************
* Function Name : GetTouckKeyFreeBuf()
* Description : 获取触摸按键空间状态键值
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GetTouckKeyFreeBuf();
#if !INTERRUPT_TouchKey
/*******************************************************************************
* Function Name : TouchKeyChannelQuery()
* Description : 触摸按键通道状态查询
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void TouchKeyChannelQuery();
#endif