Stanley Cohen
/
minutetimer_v2
Kitchen Timer example program.
Fork of secondtimer_v1 by
minutetimerv2.cpp@4:b6d2c5d48ef0, 2015-04-06 (annotated)
- Committer:
- scohennm
- Date:
- Mon Apr 06 14:30:10 2015 +0000
- Revision:
- 4:b6d2c5d48ef0
- Parent:
- 3:db1dad0e5441
Use modulus operator for true time calculations
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
scohennm | 3:db1dad0e5441 | 1 | #include "mbed.h" |
scohennm | 3:db1dad0e5441 | 2 | #include "SLCD.h" |
scohennm | 3:db1dad0e5441 | 3 | #include "TSISensor.h" |
scohennm | 3:db1dad0e5441 | 4 | |
scohennm | 3:db1dad0e5441 | 5 | #define ONESEC 1.009f // tweak for accuracy |
scohennm | 3:db1dad0e5441 | 6 | #define LEDTIME 0.2 |
scohennm | 3:db1dad0e5441 | 7 | #define TOUCHDELAY 0.100 |
scohennm | 3:db1dad0e5441 | 8 | #define DONEMESS "DONE" |
scohennm | 3:db1dad0e5441 | 9 | #define TIMESCALING 1.0 |
scohennm | 3:db1dad0e5441 | 10 | #define LCDLEN 10 |
scohennm | 3:db1dad0e5441 | 11 | #define MAXMIN 55 |
scohennm | 3:db1dad0e5441 | 12 | #define LEDON false |
scohennm | 3:db1dad0e5441 | 13 | #define LEDOFF true |
scohennm | 4:b6d2c5d48ef0 | 14 | #define SECSPERMIN 60 // using modulus |
scohennm | 3:db1dad0e5441 | 15 | // Define states |
scohennm | 3:db1dad0e5441 | 16 | #define NOBLINK 0 // "done" condition |
scohennm | 3:db1dad0e5441 | 17 | #define BLINK 1 |
scohennm | 3:db1dad0e5441 | 18 | #define PERIODSELECT 0 |
scohennm | 3:db1dad0e5441 | 19 | #define TIMING 1 |
scohennm | 3:db1dad0e5441 | 20 | |
scohennm | 3:db1dad0e5441 | 21 | SLCD slcd; //define LCD display |
scohennm | 3:db1dad0e5441 | 22 | TSISensor tsiScaling; // Capacitive sensor/slider |
scohennm | 4:b6d2c5d48ef0 | 23 | DigitalIn RtButton(PTC3); |
scohennm | 4:b6d2c5d48ef0 | 24 | DigitalIn LftButton(PTC12); |
scohennm | 3:db1dad0e5441 | 25 | DigitalOut greenColor(LED_GREEN); |
scohennm | 3:db1dad0e5441 | 26 | DigitalOut redColor(LED_RED); |
scohennm | 3:db1dad0e5441 | 27 | |
scohennm | 3:db1dad0e5441 | 28 | Timer LEDTimer; |
scohennm | 3:db1dad0e5441 | 29 | Timer SecondsTimer; |
scohennm | 3:db1dad0e5441 | 30 | |
scohennm | 3:db1dad0e5441 | 31 | char lcdData[LCDLEN]; //Global character buffer for LCD |
scohennm | 3:db1dad0e5441 | 32 | |
scohennm | 3:db1dad0e5441 | 33 | void LCDMessNoDwell(char *lMess){ |
scohennm | 3:db1dad0e5441 | 34 | slcd.Home(); |
scohennm | 3:db1dad0e5441 | 35 | slcd.clear(); |
scohennm | 3:db1dad0e5441 | 36 | slcd.printf(lMess); |
scohennm | 3:db1dad0e5441 | 37 | } |
scohennm | 3:db1dad0e5441 | 38 | |
scohennm | 3:db1dad0e5441 | 39 | void LEDFlipState(){ |
scohennm | 3:db1dad0e5441 | 40 | static bool LEDState = LEDOFF; |
scohennm | 3:db1dad0e5441 | 41 | |
scohennm | 3:db1dad0e5441 | 42 | redColor.write(LEDState); |
scohennm | 3:db1dad0e5441 | 43 | greenColor.write(!LEDState); |
scohennm | 3:db1dad0e5441 | 44 | LEDState = !LEDState; |
scohennm | 3:db1dad0e5441 | 45 | return; |
scohennm | 3:db1dad0e5441 | 46 | } |
scohennm | 3:db1dad0e5441 | 47 | |
scohennm | 3:db1dad0e5441 | 48 | void LEDSOff(){ |
scohennm | 3:db1dad0e5441 | 49 | redColor.write(LEDOFF); |
scohennm | 3:db1dad0e5441 | 50 | greenColor.write(LEDOFF); |
scohennm | 3:db1dad0e5441 | 51 | return; |
scohennm | 3:db1dad0e5441 | 52 | } |
scohennm | 3:db1dad0e5441 | 53 | |
scohennm | 3:db1dad0e5441 | 54 | |
scohennm | 3:db1dad0e5441 | 55 | |
scohennm | 3:db1dad0e5441 | 56 | |
scohennm | 3:db1dad0e5441 | 57 | |
scohennm | 3:db1dad0e5441 | 58 | int main(){ |
scohennm | 3:db1dad0e5441 | 59 | |
scohennm | 3:db1dad0e5441 | 60 | int RButtonState; |
scohennm | 3:db1dad0e5441 | 61 | int LButtonState; |
scohennm | 3:db1dad0e5441 | 62 | float tempValue; // for touch value |
scohennm | 3:db1dad0e5441 | 63 | int mCount = MAXMIN; |
scohennm | 3:db1dad0e5441 | 64 | int secCount = SECSPERMIN; |
scohennm | 4:b6d2c5d48ef0 | 65 | int totalSecs= 0; |
scohennm | 3:db1dad0e5441 | 66 | // define two state machine variables |
scohennm | 3:db1dad0e5441 | 67 | int IndicatorState = NOBLINK; |
scohennm | 3:db1dad0e5441 | 68 | int TimerState = PERIODSELECT; |
scohennm | 3:db1dad0e5441 | 69 | |
scohennm | 3:db1dad0e5441 | 70 | // default display |
scohennm | 3:db1dad0e5441 | 71 | sprintf (lcdData,"%d",mCount); |
scohennm | 3:db1dad0e5441 | 72 | LCDMessNoDwell(lcdData); |
scohennm | 3:db1dad0e5441 | 73 | LEDTimer.start(); |
scohennm | 3:db1dad0e5441 | 74 | LEDTimer.reset(); |
scohennm | 3:db1dad0e5441 | 75 | SecondsTimer.start(); |
scohennm | 3:db1dad0e5441 | 76 | SecondsTimer.reset(); |
scohennm | 3:db1dad0e5441 | 77 | |
scohennm | 3:db1dad0e5441 | 78 | while (true) { |
scohennm | 3:db1dad0e5441 | 79 | |
scohennm | 3:db1dad0e5441 | 80 | RButtonState = !RtButton.read(); |
scohennm | 3:db1dad0e5441 | 81 | LButtonState = !LftButton.read(); |
scohennm | 3:db1dad0e5441 | 82 | if(LButtonState) { // Stop the timer |
scohennm | 3:db1dad0e5441 | 83 | TimerState = PERIODSELECT; |
scohennm | 3:db1dad0e5441 | 84 | IndicatorState = BLINK; |
scohennm | 3:db1dad0e5441 | 85 | } |
scohennm | 3:db1dad0e5441 | 86 | |
scohennm | 3:db1dad0e5441 | 87 | switch (TimerState){ |
scohennm | 3:db1dad0e5441 | 88 | case PERIODSELECT: { |
scohennm | 3:db1dad0e5441 | 89 | tempValue = tsiScaling.readPercentage(); |
scohennm | 3:db1dad0e5441 | 90 | if(tempValue > 0) { // Standard way of handling slider |
scohennm | 3:db1dad0e5441 | 91 | IndicatorState = NOBLINK; |
scohennm | 3:db1dad0e5441 | 92 | mCount = int((float)MAXMIN *tempValue); // get minutes |
scohennm | 3:db1dad0e5441 | 93 | sprintf (lcdData,"%d",mCount); |
scohennm | 3:db1dad0e5441 | 94 | LCDMessNoDwell(lcdData); |
scohennm | 3:db1dad0e5441 | 95 | wait(TOUCHDELAY); |
scohennm | 3:db1dad0e5441 | 96 | } |
scohennm | 3:db1dad0e5441 | 97 | if(RButtonState) { //start the timer |
scohennm | 3:db1dad0e5441 | 98 | SecondsTimer.reset(); |
scohennm | 4:b6d2c5d48ef0 | 99 | // secCount = SECSPERMIN + 1; // 1st time through |
scohennm | 4:b6d2c5d48ef0 | 100 | totalSecs = mCount * SECSPERMIN; |
scohennm | 3:db1dad0e5441 | 101 | TimerState = TIMING; |
scohennm | 3:db1dad0e5441 | 102 | } |
scohennm | 3:db1dad0e5441 | 103 | break; |
scohennm | 3:db1dad0e5441 | 104 | } |
scohennm | 3:db1dad0e5441 | 105 | |
scohennm | 3:db1dad0e5441 | 106 | case TIMING: { |
scohennm | 3:db1dad0e5441 | 107 | if (SecondsTimer.read() > ONESEC) { |
scohennm | 4:b6d2c5d48ef0 | 108 | totalSecs--; |
scohennm | 4:b6d2c5d48ef0 | 109 | mCount = totalSecs / SECSPERMIN; // Quotient |
scohennm | 4:b6d2c5d48ef0 | 110 | secCount = totalSecs % SECSPERMIN; // Remainder |
scohennm | 4:b6d2c5d48ef0 | 111 | if(totalSecs < 0){ |
scohennm | 4:b6d2c5d48ef0 | 112 | IndicatorState = BLINK; |
scohennm | 4:b6d2c5d48ef0 | 113 | TimerState = PERIODSELECT; |
scohennm | 3:db1dad0e5441 | 114 | } |
scohennm | 3:db1dad0e5441 | 115 | sprintf (lcdData,"%2d%2d",mCount, secCount); // Display countdown |
scohennm | 3:db1dad0e5441 | 116 | LCDMessNoDwell(lcdData); |
scohennm | 3:db1dad0e5441 | 117 | slcd.Colon(true); |
scohennm | 3:db1dad0e5441 | 118 | SecondsTimer.reset(); |
scohennm | 3:db1dad0e5441 | 119 | } |
scohennm | 3:db1dad0e5441 | 120 | break; |
scohennm | 3:db1dad0e5441 | 121 | } |
scohennm | 3:db1dad0e5441 | 122 | }// end TimerState switch |
scohennm | 3:db1dad0e5441 | 123 | |
scohennm | 3:db1dad0e5441 | 124 | |
scohennm | 3:db1dad0e5441 | 125 | |
scohennm | 3:db1dad0e5441 | 126 | |
scohennm | 3:db1dad0e5441 | 127 | |
scohennm | 3:db1dad0e5441 | 128 | // Timer Completion indicator |
scohennm | 3:db1dad0e5441 | 129 | |
scohennm | 3:db1dad0e5441 | 130 | if(LEDTimer.read() > LEDTIME){ |
scohennm | 3:db1dad0e5441 | 131 | LEDTimer.reset(); |
scohennm | 3:db1dad0e5441 | 132 | switch (IndicatorState){ |
scohennm | 3:db1dad0e5441 | 133 | case BLINK: { |
scohennm | 3:db1dad0e5441 | 134 | LEDFlipState(); |
scohennm | 3:db1dad0e5441 | 135 | LCDMessNoDwell(DONEMESS); |
scohennm | 3:db1dad0e5441 | 136 | break; |
scohennm | 3:db1dad0e5441 | 137 | } |
scohennm | 3:db1dad0e5441 | 138 | case NOBLINK: { |
scohennm | 3:db1dad0e5441 | 139 | LEDSOff(); |
scohennm | 3:db1dad0e5441 | 140 | break; |
scohennm | 3:db1dad0e5441 | 141 | } |
scohennm | 3:db1dad0e5441 | 142 | } //end case |
scohennm | 3:db1dad0e5441 | 143 | }// end LEDTimer if |
scohennm | 3:db1dad0e5441 | 144 | } // while forever |
scohennm | 3:db1dad0e5441 | 145 | }// end main |