Project introduction
Based on the BS84B08A-3 touch chip of Hetai chip, the T10 foam shield board principle diagram PCB is designed, and its corresponding touch function program is written.
Project realization
Through the chip BS84B08A-3 touch chip combined with AD to achieve touch panel PCB rendering, combined with the peripheral air pump to achieve the function of spraying foam.
Concrete Step
Design corresponding IO control functions through IC specifications and precautions for PCB touch copper coating，Take schematic diagram as an example:
Take control air pump as an example:
1#include "USER_PROGRAM.H"
2#include "BaseRef.H"
3//#define LPump_2ndOpen 120-30 //药泵第二次加药时间
4//#define LPump_3rdOpen 120-60 //药泵第三次加药时间
5//#define LPump_4thOpen 120-90 //药泵第四次加药时间
6//#define LPump_5Open (15000-12000)/2 //药泵第五次加药时间
7#define LPump_1stOpen 7//80/10 //药泵第一次加药时间
8#define LPumpOpenTime 9//100/10 //药泵每次加药时间
9#define LPumpTimes 1 //药泵第每次加药次数
10#define LPumpColseTime 1//2/2 //药泵两次小加药时间间隔
11#define AirTime 50//500/10 //结束时吹气时间
12#define IntervalTime 250//2500/10 //吸药间隔时间
13#define FoamTimesLeft 210//70*3 //吸药次数剩余
14
15u8 FoamTime; //泡沫盾总时间
16//u16 CNT_LedFlicker;
17void FOAMCONTROL()
18{
19/*
20if(Flag_FoamFirstOn==0)
21{
22Flag_FoamFirstOn=1; //只进一次
23CNT_LPumpOpenTime=15; //赋予吸药时间
24CNT_LPumpTimes=1; //赋予吸药次数
25}
26*/
27 if(FoamTime>0&&FoamTime<250)
28 {
29 CNT_1S=0;
30 APump=1;
31 if(CNT_FoamTime==0)
32 {
33 CNT_LPumpOpenTime=LPump_1stOpen+CPS_LpumpTime; //赋予吸药时间
34 CNT_LPumpTimes=LPumpTimes; //赋予吸药次数
35 CPS_LpumpTime=0;
36 CNT_FoamTime=IntervalTime;
37
38 }
39 if(CNT_FoamTime>0)
40 CNT_FoamTime--;
41 if(CNT_FoamTime==0)
42 {
43 CNT_LPumpOpenTime=LPumpOpenTime; //赋予吸药时间
44 CNT_LPumpTimes=LPumpTimes; //赋予吸药次数
45 CNT_FoamTime=IntervalTime;
46 }
47 // if(FoamTime==1) CNT_APumpTime=AirTime; //赋予空气泵开启时间，用于吹出管中残余水
48 }
49 else
50 {
51 /*
52 if(CNT_APumpTime>0)
53 {
54 CNT_APumpTime--;
55 APump=1;
56 }
57 else
58 */
59 // {
60 APump=0;
61 CNT_FoamTime=0;
62 // }
63 }
64 LPumpControl();
65}
66
67//液泵控制
68void LPumpControl()
69{
70 if(CNT_LPumpTimes>0)
71 {
72 /*
73 if(CNT_LPumpOpenTime>LPumpColseTime)
74 else
75 {
76 LPump=0;
77 Flag_ADService=0;
78 }
79 */
80 LPump=1;
81 if(CNT_LPumpOpenTime==LPumpOpenTime-2) //开启AD，检测电流
82 {
83 Flag_ADService=1;
84 AD_COUNT=0;
85 AD_SUM=0;
86 }
87 CNT_LPumpOpenTime--;
88 if(CNT_LPumpOpenTime==0)
89 {
90 if(CNT_LPumpTimes>1) CNT_LPumpOpenTime=LPumpOpenTime;
91 CNT_LPumpTimes--;
92 if(Flag_FloatKeyDown)
93 {
94 if(CNT_FoamTimesLeft<FoamTimesLeft)
95 CNT_FoamTimesLeft++;
96 else
97 Flag_LiquidLow=1;
98 }
99 else
100 {
101 CNT_FoamTimesLeft=0;
102 Flag_LiquidLow=0;
103 }
104 }
105 }
106 else
107 {
108 LPump=0;
109 CNT_LPumpOpenTime=0;
110 CNT_LPumpTimes=0;
111 }
112}
Take Touch control as an example:
1#include "USER_PROGRAM.H"
2#include "BaseRef.H"
3
4u8 Touch_ok; //按键输出值
5
6union Fbit KeyFlag; //按键程序相关标志位
7#define Flag_First_Check KeyFlag.Flag.b0
8#define Flag_Get_Baseline KeyFlag.Flag.b1
9//-------------------------------------------------------------------------------------
10u16 BaseLine; //基线值
11u16 Value_Touch_Key_Old,Value_Touch_Key_New,Temp_Value_Touch_Key;
12u16 TimesCNT_Baseline;//,Times_Leg_In;
13
14Longword Temp_Count_Touch_Key;
15
16#define Para_Baseline_Tolerance 2 //公差
17#define Gap_Leg_In 4
18
19#define Times_Gap_Leg_In_Short 5
20#define Times_Gap_Leg_In_Long 200
21#define Times_Gap_Leg_Out 3
22
23#define Para_TimesCNT_Baseline_First_ON 256
24#define Para_TimesCNT_Baseline 1000
25
26Byte Key_Value,Key_Old,Key_Ok,Key_Status,Key_Mid;
27Word Key_CNT;
28Word Key_CNT_Pressed;
29Byte Key_CNT_Off;
30#define Key_Handled Key_Status,B(0)
31
32u8 n;
33//-------------------------------------------------------------------------------------
34void TOUCH_KEY()
35{
36Word j;
37Longword i;
38 //---------Baseline_L------------------------------
39 Value_Touch_Key_Old=Value_Touch_Key_New;
40 Value_Touch_Key_New=TOUCH_VALUE_H;
41 Value_Touch_Key_New=(Value_Touch_Key_New<<8)+TOUCH_VALUE;
42
43 //------The first check for Touch Key, find out the Baseline_L--------------------------------------------
44 if(Flag_First_Check==0)
45 {
46 if(Value_Touch_Key_New>=Value_Touch_Key_Old) j=Value_Touch_Key_New-Value_Touch_Key_Old;
47 else j=Value_Touch_Key_Old-Value_Touch_Key_New;
48
49 if(j<=Para_Baseline_Tolerance)
50 {
51 TimesCNT_Baseline++;
52 Temp_Count_Touch_Key+=Value_Touch_Key_New;
53 if(TimesCNT_Baseline>=Para_TimesCNT_Baseline_First_ON)
54 {
55 i=Temp_Count_Touch_Key/Para_TimesCNT_Baseline_First_ON;
56 BaseLine=(u16)i;
57 TimesCNT_Baseline=0;
58 Temp_Count_Touch_Key=0;
59 Flag_First_Check=1;
60
61 Key_Status=1;
62 }
63 }
64 else
65 {
66 TimesCNT_Baseline=0;
67 Temp_Count_Touch_Key=0;
68 }
69 }
70 //----------After the first check the touch key--------------------------
71 else
72 {
73 if(Flag_Get_Baseline==0)
74 {
75 if(n<20)
76 {
77 n++;
78 Temp_Count_Touch_Key+=Value_Touch_Key_New;
79 }
80 else
81 {
82 n=0;
83 Temp_Value_Touch_Key=(Word)(Temp_Count_Touch_Key/20);
84 Temp_Count_Touch_Key=0;
85 Flag_Get_Baseline=1;
86 }
87 }
88 if(Flag_Get_Baseline)
89 {
90 if((Value_Touch_Key_New<=Temp_Value_Touch_Key+Para_Baseline_Tolerance)&&(Value_Touch_Key_New>=Temp_Value_Touch_Key-Para_Baseline_Tolerance))
91 {
92 TimesCNT_Baseline++;
93 if(TimesCNT_Baseline>=Para_TimesCNT_Baseline)
94 {
95 TimesCNT_Baseline=0;
96 BaseLine=Temp_Value_Touch_Key;
97 Flag_First_Check=1;
98 Flag_Get_Baseline=0;
99 }
100 }
101 else
102 {
103 Flag_Get_Baseline=0;
104 TimesCNT_Baseline=0;
105 Temp_Value_Touch_Key=0;
106 }
107 }
108 }
109
110 //--------------------------------------------------------------------------
111 if(BaseLine>0)
112 {
113 //-----------Key_Scan--------------------------
114 if(Value_Touch_Key_New>=BaseLine+Gap_Leg_In) {Key_Value=1;Key_Mid=0;}
115 else if(Value_Touch_Key_New<BaseLine+Para_Baseline_Tolerance) {Key_Value=0;Key_Mid=0;}
116 else Key_Mid=1;
117
118 if(Key_Mid==0)
119 {
120 if(Key_Value==1)
121 {
122 if(Key_CNT_Pressed<600) Key_CNT_Pressed++;
123
124 if(Key_CNT_Pressed==500)
125 {
126 Touch_ok=2;
127 SET(Key_Handled);
128 }
129 Key_CNT_Off=0;
130 }
131 else
132 {
133 if(Key_CNT_Off<2) Key_CNT_Off++;
134 else
135 {
136 if(Key_CNT_Pressed>=10&&Key_CNT_Pressed<150)
137 {
138 Touch_ok=1;
139 SET(Key_Handled);
140 }
141 Key_CNT_Pressed=0;
142 }
143 }
144 }
145 }
146
147}
The complete source code of this article has been uploaded to gitee，Click to view.