Jiwen Cai
/
HW2-3
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main.cpp@0:ca4c2177a6b5, 2010-11-30 (annotated)
- Committer:
- goodcjw
- Date:
- Tue Nov 30 23:52:57 2010 +0000
- Revision:
- 0:ca4c2177a6b5
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| goodcjw | 0:ca4c2177a6b5 | 1 | #include "mbed.h" |
| goodcjw | 0:ca4c2177a6b5 | 2 | #include "pt.h" |
| goodcjw | 0:ca4c2177a6b5 | 3 | |
| goodcjw | 0:ca4c2177a6b5 | 4 | #define NBUFF 10 |
| goodcjw | 0:ca4c2177a6b5 | 5 | |
| goodcjw | 0:ca4c2177a6b5 | 6 | typedef enum { |
| goodcjw | 0:ca4c2177a6b5 | 7 | e_ValidInput, |
| goodcjw | 0:ca4c2177a6b5 | 8 | e_Init, |
| goodcjw | 0:ca4c2177a6b5 | 9 | } Event_t; |
| goodcjw | 0:ca4c2177a6b5 | 10 | |
| goodcjw | 0:ca4c2177a6b5 | 11 | DigitalOut myled_1(LED1); |
| goodcjw | 0:ca4c2177a6b5 | 12 | DigitalOut myled_2(LED2); |
| goodcjw | 0:ca4c2177a6b5 | 13 | AnalogIn input_1(p17); |
| goodcjw | 0:ca4c2177a6b5 | 14 | AnalogIn input_2(p20); |
| goodcjw | 0:ca4c2177a6b5 | 15 | DigitalIn charger_1(p16); |
| goodcjw | 0:ca4c2177a6b5 | 16 | DigitalIn charger_2(p19); |
| goodcjw | 0:ca4c2177a6b5 | 17 | DigitalOut ground_1(p15); |
| goodcjw | 0:ca4c2177a6b5 | 18 | DigitalOut ground_2(p18); |
| goodcjw | 0:ca4c2177a6b5 | 19 | Serial pc(USBTX, USBRX); // tx, rx |
| goodcjw | 0:ca4c2177a6b5 | 20 | |
| goodcjw | 0:ca4c2177a6b5 | 21 | int buff_1, buff_2; |
| goodcjw | 0:ca4c2177a6b5 | 22 | int last_1, last_2; |
| goodcjw | 0:ca4c2177a6b5 | 23 | char trigger[128]; |
| goodcjw | 0:ca4c2177a6b5 | 24 | int tr_len, tr_pos; |
| goodcjw | 0:ca4c2177a6b5 | 25 | char key; |
| goodcjw | 0:ca4c2177a6b5 | 26 | |
| goodcjw | 0:ca4c2177a6b5 | 27 | int touchSense_1(void); |
| goodcjw | 0:ca4c2177a6b5 | 28 | int touchSense_2(void); |
| goodcjw | 0:ca4c2177a6b5 | 29 | int keyPressed(); |
| goodcjw | 0:ca4c2177a6b5 | 30 | int buttonTouched(); |
| goodcjw | 0:ca4c2177a6b5 | 31 | char readTouchInput(); |
| goodcjw | 0:ca4c2177a6b5 | 32 | |
| goodcjw | 0:ca4c2177a6b5 | 33 | |
| goodcjw | 0:ca4c2177a6b5 | 34 | // int flag; |
| goodcjw | 0:ca4c2177a6b5 | 35 | Event_t ev; |
| goodcjw | 0:ca4c2177a6b5 | 36 | |
| goodcjw | 0:ca4c2177a6b5 | 37 | static |
| goodcjw | 0:ca4c2177a6b5 | 38 | PT_THREAD(pt_serial(struct pt *pt)) { |
| goodcjw | 0:ca4c2177a6b5 | 39 | PT_BEGIN(pt); |
| goodcjw | 0:ca4c2177a6b5 | 40 | while (1) { |
| goodcjw | 0:ca4c2177a6b5 | 41 | PT_YIELD_UNTIL(pt, ev == e_Init); |
| goodcjw | 0:ca4c2177a6b5 | 42 | trigger[0] = '\0'; |
| goodcjw | 0:ca4c2177a6b5 | 43 | tr_len = 0; |
| goodcjw | 0:ca4c2177a6b5 | 44 | pc.printf("Please input the trigger string in the format of Sbbb...bbbE\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 45 | PT_YIELD_UNTIL(pt, keyPressed()); |
| goodcjw | 0:ca4c2177a6b5 | 46 | if (key != 'S') { |
| goodcjw | 0:ca4c2177a6b5 | 47 | pc.printf("HOST ERROR\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 48 | PT_EXIT(pt); |
| goodcjw | 0:ca4c2177a6b5 | 49 | } |
| goodcjw | 0:ca4c2177a6b5 | 50 | while (1) { |
| goodcjw | 0:ca4c2177a6b5 | 51 | PT_YIELD_UNTIL(pt, keyPressed()); |
| goodcjw | 0:ca4c2177a6b5 | 52 | if (key == 'E') { |
| goodcjw | 0:ca4c2177a6b5 | 53 | pc.printf("\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 54 | if (tr_len == 0) { |
| goodcjw | 0:ca4c2177a6b5 | 55 | pc.printf("HOST ERROR\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 56 | PT_EXIT(pt); |
| goodcjw | 0:ca4c2177a6b5 | 57 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 58 | trigger[tr_len] = '\0'; |
| goodcjw | 0:ca4c2177a6b5 | 59 | break; |
| goodcjw | 0:ca4c2177a6b5 | 60 | } |
| goodcjw | 0:ca4c2177a6b5 | 61 | } else if (key == '0' || key == '1') { |
| goodcjw | 0:ca4c2177a6b5 | 62 | trigger[tr_len++] = key; |
| goodcjw | 0:ca4c2177a6b5 | 63 | pc.putc(key); |
| goodcjw | 0:ca4c2177a6b5 | 64 | } else if (key == ' ') { |
| goodcjw | 0:ca4c2177a6b5 | 65 | pc.putc(key); |
| goodcjw | 0:ca4c2177a6b5 | 66 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 67 | pc.printf("\n\rHOST ERROR\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 68 | PT_EXIT(pt); |
| goodcjw | 0:ca4c2177a6b5 | 69 | } |
| goodcjw | 0:ca4c2177a6b5 | 70 | } |
| goodcjw | 0:ca4c2177a6b5 | 71 | // Now we can process to Touch Input |
| goodcjw | 0:ca4c2177a6b5 | 72 | ev = e_ValidInput; |
| goodcjw | 0:ca4c2177a6b5 | 73 | } |
| goodcjw | 0:ca4c2177a6b5 | 74 | PT_END(pt); |
| goodcjw | 0:ca4c2177a6b5 | 75 | } |
| goodcjw | 0:ca4c2177a6b5 | 76 | |
| goodcjw | 0:ca4c2177a6b5 | 77 | static |
| goodcjw | 0:ca4c2177a6b5 | 78 | PT_THREAD(pt_touch(struct pt *pt)) { |
| goodcjw | 0:ca4c2177a6b5 | 79 | PT_BEGIN(pt); |
| goodcjw | 0:ca4c2177a6b5 | 80 | while (1) { |
| goodcjw | 0:ca4c2177a6b5 | 81 | PT_YIELD_UNTIL(pt, ev == e_ValidInput); |
| goodcjw | 0:ca4c2177a6b5 | 82 | pc.printf("The trigger string is %s\n\r", trigger); |
| goodcjw | 0:ca4c2177a6b5 | 83 | pc.printf("Please start to touch the button\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 84 | tr_pos = 0; |
| goodcjw | 0:ca4c2177a6b5 | 85 | while(tr_pos < tr_len) { |
| goodcjw | 0:ca4c2177a6b5 | 86 | PT_YIELD_UNTIL(pt, buttonTouched()); |
| goodcjw | 0:ca4c2177a6b5 | 87 | pc.putc(key); |
| goodcjw | 0:ca4c2177a6b5 | 88 | if (key != trigger[tr_pos++]) { |
| goodcjw | 0:ca4c2177a6b5 | 89 | pc.printf("\n\rTOUCH ERROR\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 90 | ev = e_Init; |
| goodcjw | 0:ca4c2177a6b5 | 91 | PT_EXIT(pt); |
| goodcjw | 0:ca4c2177a6b5 | 92 | } |
| goodcjw | 0:ca4c2177a6b5 | 93 | } |
| goodcjw | 0:ca4c2177a6b5 | 94 | pc.printf("\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 95 | pc.printf("MATCH\n\r"); |
| goodcjw | 0:ca4c2177a6b5 | 96 | ev = e_Init; |
| goodcjw | 0:ca4c2177a6b5 | 97 | PT_EXIT(pt); |
| goodcjw | 0:ca4c2177a6b5 | 98 | } |
| goodcjw | 0:ca4c2177a6b5 | 99 | PT_END(pt); |
| goodcjw | 0:ca4c2177a6b5 | 100 | } |
| goodcjw | 0:ca4c2177a6b5 | 101 | |
| goodcjw | 0:ca4c2177a6b5 | 102 | static struct pt pt1, pt2; |
| goodcjw | 0:ca4c2177a6b5 | 103 | int main() { |
| goodcjw | 0:ca4c2177a6b5 | 104 | PT_INIT(&pt1); |
| goodcjw | 0:ca4c2177a6b5 | 105 | PT_INIT(&pt2); |
| goodcjw | 0:ca4c2177a6b5 | 106 | // flag = S_SERIAL; |
| goodcjw | 0:ca4c2177a6b5 | 107 | ev = e_Init; |
| goodcjw | 0:ca4c2177a6b5 | 108 | while (1) { |
| goodcjw | 0:ca4c2177a6b5 | 109 | pt_serial(&pt1); |
| goodcjw | 0:ca4c2177a6b5 | 110 | pt_touch(&pt2); |
| goodcjw | 0:ca4c2177a6b5 | 111 | } |
| goodcjw | 0:ca4c2177a6b5 | 112 | } |
| goodcjw | 0:ca4c2177a6b5 | 113 | |
| goodcjw | 0:ca4c2177a6b5 | 114 | int keyPressed() { |
| goodcjw | 0:ca4c2177a6b5 | 115 | key = pc.getc(); |
| goodcjw | 0:ca4c2177a6b5 | 116 | return 1; |
| goodcjw | 0:ca4c2177a6b5 | 117 | } |
| goodcjw | 0:ca4c2177a6b5 | 118 | |
| goodcjw | 0:ca4c2177a6b5 | 119 | int buttonTouched() { |
| goodcjw | 0:ca4c2177a6b5 | 120 | key = readTouchInput(); |
| goodcjw | 0:ca4c2177a6b5 | 121 | return 1; |
| goodcjw | 0:ca4c2177a6b5 | 122 | } |
| goodcjw | 0:ca4c2177a6b5 | 123 | |
| goodcjw | 0:ca4c2177a6b5 | 124 | int touchSense_1(void) { |
| goodcjw | 0:ca4c2177a6b5 | 125 | float sample; |
| goodcjw | 0:ca4c2177a6b5 | 126 | ground_1 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 127 | charger_1.mode(PullUp); |
| goodcjw | 0:ca4c2177a6b5 | 128 | charger_1.mode(PullNone); |
| goodcjw | 0:ca4c2177a6b5 | 129 | sample=input_1.read(); |
| goodcjw | 0:ca4c2177a6b5 | 130 | if (sample < 0.3) { |
| goodcjw | 0:ca4c2177a6b5 | 131 | return 1; |
| goodcjw | 0:ca4c2177a6b5 | 132 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 133 | return 0; |
| goodcjw | 0:ca4c2177a6b5 | 134 | } |
| goodcjw | 0:ca4c2177a6b5 | 135 | } |
| goodcjw | 0:ca4c2177a6b5 | 136 | |
| goodcjw | 0:ca4c2177a6b5 | 137 | int touchSense_2(void) { |
| goodcjw | 0:ca4c2177a6b5 | 138 | float sample; |
| goodcjw | 0:ca4c2177a6b5 | 139 | ground_2 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 140 | charger_2.mode(PullUp); |
| goodcjw | 0:ca4c2177a6b5 | 141 | charger_2.mode(PullNone); |
| goodcjw | 0:ca4c2177a6b5 | 142 | sample=input_2.read(); |
| goodcjw | 0:ca4c2177a6b5 | 143 | if (sample < 0.3) { |
| goodcjw | 0:ca4c2177a6b5 | 144 | return 1; |
| goodcjw | 0:ca4c2177a6b5 | 145 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 146 | return 0; |
| goodcjw | 0:ca4c2177a6b5 | 147 | } |
| goodcjw | 0:ca4c2177a6b5 | 148 | } |
| goodcjw | 0:ca4c2177a6b5 | 149 | |
| goodcjw | 0:ca4c2177a6b5 | 150 | char readTouchInput() { |
| goodcjw | 0:ca4c2177a6b5 | 151 | while (1) { |
| goodcjw | 0:ca4c2177a6b5 | 152 | if (touchSense_1()) { |
| goodcjw | 0:ca4c2177a6b5 | 153 | myled_1 = 1; |
| goodcjw | 0:ca4c2177a6b5 | 154 | if (!last_1) { |
| goodcjw | 0:ca4c2177a6b5 | 155 | last_1 = 1; |
| goodcjw | 0:ca4c2177a6b5 | 156 | buff_1 = NBUFF; |
| goodcjw | 0:ca4c2177a6b5 | 157 | } |
| goodcjw | 0:ca4c2177a6b5 | 158 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 159 | if (last_1) { |
| goodcjw | 0:ca4c2177a6b5 | 160 | last_1 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 161 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 162 | if (buff_1 == 0) { |
| goodcjw | 0:ca4c2177a6b5 | 163 | if (myled_1) { |
| goodcjw | 0:ca4c2177a6b5 | 164 | myled_1 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 165 | return '0'; |
| goodcjw | 0:ca4c2177a6b5 | 166 | } |
| goodcjw | 0:ca4c2177a6b5 | 167 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 168 | buff_1--; |
| goodcjw | 0:ca4c2177a6b5 | 169 | } |
| goodcjw | 0:ca4c2177a6b5 | 170 | } |
| goodcjw | 0:ca4c2177a6b5 | 171 | } |
| goodcjw | 0:ca4c2177a6b5 | 172 | if (touchSense_2()) { |
| goodcjw | 0:ca4c2177a6b5 | 173 | myled_2 = 1; |
| goodcjw | 0:ca4c2177a6b5 | 174 | if (!last_2) { |
| goodcjw | 0:ca4c2177a6b5 | 175 | last_2 = 1; |
| goodcjw | 0:ca4c2177a6b5 | 176 | buff_2 = NBUFF; |
| goodcjw | 0:ca4c2177a6b5 | 177 | } |
| goodcjw | 0:ca4c2177a6b5 | 178 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 179 | if (last_2) { |
| goodcjw | 0:ca4c2177a6b5 | 180 | last_2 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 181 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 182 | if (buff_2 == 0) { |
| goodcjw | 0:ca4c2177a6b5 | 183 | if (myled_2) { |
| goodcjw | 0:ca4c2177a6b5 | 184 | myled_2 = 0; |
| goodcjw | 0:ca4c2177a6b5 | 185 | return '1'; |
| goodcjw | 0:ca4c2177a6b5 | 186 | } |
| goodcjw | 0:ca4c2177a6b5 | 187 | } else { |
| goodcjw | 0:ca4c2177a6b5 | 188 | buff_2--; |
| goodcjw | 0:ca4c2177a6b5 | 189 | } |
| goodcjw | 0:ca4c2177a6b5 | 190 | } |
| goodcjw | 0:ca4c2177a6b5 | 191 | } |
| goodcjw | 0:ca4c2177a6b5 | 192 | wait(0.005); |
| goodcjw | 0:ca4c2177a6b5 | 193 | } |
| goodcjw | 0:ca4c2177a6b5 | 194 | } |