Records temperature using TMP36GZ and outputs to HD44780 LCD screen (using tick interrupt routine). Alterable trip level that turns on/off LED with hysteresis. For ST Nucleo F401RE.
Dependencies: RepeatButton TMP36 GZ TextLCD mbed
Fork of Thermostat_Nucleo by
main.cpp@1:9bf30974727c, 2014-02-26 (annotated)
- Committer:
- MarcoAmerena
- Date:
- Wed Feb 26 14:20:25 2014 +0000
- Revision:
- 1:9bf30974727c
- Parent:
- 0:f5fbeaf3592c
Thermostat_NucleoF401_v1.00
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
MarcoAmerena | 1:9bf30974727c | 1 | /************************************************************************************ |
MarcoAmerena | 1:9bf30974727c | 2 | Copyright (c) 2014 Marcus Parker Sapphire Research and Electronics ltd |
MarcoAmerena | 1:9bf30974727c | 3 | |
MarcoAmerena | 1:9bf30974727c | 4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
MarcoAmerena | 1:9bf30974727c | 5 | of this software and associated documentation files (the "Software"), to deal |
MarcoAmerena | 1:9bf30974727c | 6 | in the Software without restriction, including without limitation the rights |
MarcoAmerena | 1:9bf30974727c | 7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
MarcoAmerena | 1:9bf30974727c | 8 | copies of the Software, and to permit persons to whom the Software is |
MarcoAmerena | 1:9bf30974727c | 9 | furnished to do so, subject to the following conditions: |
MarcoAmerena | 1:9bf30974727c | 10 | |
MarcoAmerena | 1:9bf30974727c | 11 | The above copyright notice and this permission notice shall be included in |
MarcoAmerena | 1:9bf30974727c | 12 | all copies or substantial portions of the Software. |
MarcoAmerena | 1:9bf30974727c | 13 | |
MarcoAmerena | 1:9bf30974727c | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
MarcoAmerena | 1:9bf30974727c | 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
MarcoAmerena | 1:9bf30974727c | 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
MarcoAmerena | 1:9bf30974727c | 17 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
MarcoAmerena | 1:9bf30974727c | 18 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
MarcoAmerena | 1:9bf30974727c | 19 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
MarcoAmerena | 1:9bf30974727c | 20 | THE SOFTWARE. |
MarcoAmerena | 1:9bf30974727c | 21 | |
MarcoAmerena | 1:9bf30974727c | 22 | This program uses the following libraries: |
MarcoAmerena | 1:9bf30974727c | 23 | mbed by mbed_official |
MarcoAmerena | 1:9bf30974727c | 24 | TextLCD by Simon_Ford |
MarcoAmerena | 1:9bf30974727c | 25 | TMP36GZ by Tyler_Weaver |
MarcoAmerena | 1:9bf30974727c | 26 | RepeatButton by Jeroen_Hilgers |
MarcoAmerena | 1:9bf30974727c | 27 | |
MarcoAmerena | 1:9bf30974727c | 28 | Wiring instructions: |
MarcoAmerena | 1:9bf30974727c | 29 | Two external buttons -> PB_4 and PB_3 |
MarcoAmerena | 1:9bf30974727c | 30 | TMP36GZ pwr->3.3v, Vout->PA_0 |
MarcoAmerena | 1:9bf30974727c | 31 | LCD connections as below |
MarcoAmerena | 1:9bf30974727c | 32 | *****************************************************************************************/ |
MarcoAmerena | 1:9bf30974727c | 33 | |
MarcoAmerena | 0:f5fbeaf3592c | 34 | #include "mbed.h" |
MarcoAmerena | 0:f5fbeaf3592c | 35 | #include "TextLCD.h" |
MarcoAmerena | 0:f5fbeaf3592c | 36 | #include "TMP36GZ.h" |
MarcoAmerena | 0:f5fbeaf3592c | 37 | #include "RepeatButton.h" |
MarcoAmerena | 0:f5fbeaf3592c | 38 | |
MarcoAmerena | 0:f5fbeaf3592c | 39 | using namespace std; |
MarcoAmerena | 0:f5fbeaf3592c | 40 | #define REPEAT_DELAY 500 |
MarcoAmerena | 0:f5fbeaf3592c | 41 | #define REPEAT_PERIOD 100 |
MarcoAmerena | 0:f5fbeaf3592c | 42 | #define KEY_UP 2 |
MarcoAmerena | 0:f5fbeaf3592c | 43 | #define KEY_DOWN 4 |
MarcoAmerena | 0:f5fbeaf3592c | 44 | |
MarcoAmerena | 0:f5fbeaf3592c | 45 | Ticker tick; |
MarcoAmerena | 0:f5fbeaf3592c | 46 | TextLCD lcd(PC_10, PC_12, PA_13, PA_14, PA_15, PB_7); // rs, e, d4-d7 |
MarcoAmerena | 1:9bf30974727c | 47 | TMP36GZ temp(PA_0); |
MarcoAmerena | 0:f5fbeaf3592c | 48 | DigitalOut led(LED1); |
MarcoAmerena | 0:f5fbeaf3592c | 49 | |
MarcoAmerena | 0:f5fbeaf3592c | 50 | KeyBuffer TheKeyBuffer(32); |
MarcoAmerena | 0:f5fbeaf3592c | 51 | RepeatButton butUp(PB_4, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_UP); |
MarcoAmerena | 0:f5fbeaf3592c | 52 | RepeatButton butDown(PB_3, REPEAT_DELAY, REPEAT_PERIOD, &TheKeyBuffer, KEY_DOWN); |
MarcoAmerena | 0:f5fbeaf3592c | 53 | |
MarcoAmerena | 0:f5fbeaf3592c | 54 | float d, level; |
MarcoAmerena | 0:f5fbeaf3592c | 55 | |
MarcoAmerena | 0:f5fbeaf3592c | 56 | void disp() |
MarcoAmerena | 0:f5fbeaf3592c | 57 | { |
MarcoAmerena | 0:f5fbeaf3592c | 58 | lcd.locate(0, 0); |
MarcoAmerena | 0:f5fbeaf3592c | 59 | lcd.printf("%3.1f %cC", d, 223); |
MarcoAmerena | 0:f5fbeaf3592c | 60 | lcd.locate(0, 1); |
MarcoAmerena | 0:f5fbeaf3592c | 61 | lcd.printf("Trip %3.1f", level); |
MarcoAmerena | 0:f5fbeaf3592c | 62 | } |
MarcoAmerena | 0:f5fbeaf3592c | 63 | |
MarcoAmerena | 0:f5fbeaf3592c | 64 | int main() |
MarcoAmerena | 0:f5fbeaf3592c | 65 | { |
MarcoAmerena | 1:9bf30974727c | 66 | level = 25.0; //Initial trip level value |
MarcoAmerena | 0:f5fbeaf3592c | 67 | float leveloff; |
MarcoAmerena | 0:f5fbeaf3592c | 68 | int value; |
MarcoAmerena | 0:f5fbeaf3592c | 69 | |
MarcoAmerena | 1:9bf30974727c | 70 | tick.attach(&disp, 0.5); //Calls display every 0.5 seconds |
MarcoAmerena | 0:f5fbeaf3592c | 71 | |
MarcoAmerena | 0:f5fbeaf3592c | 72 | while(1) |
MarcoAmerena | 0:f5fbeaf3592c | 73 | { |
MarcoAmerena | 1:9bf30974727c | 74 | d = temp.sample(); //Define d as temp celsius reading |
MarcoAmerena | 0:f5fbeaf3592c | 75 | leveloff = (level - 2); |
MarcoAmerena | 0:f5fbeaf3592c | 76 | |
MarcoAmerena | 0:f5fbeaf3592c | 77 | for(value = TheKeyBuffer.Read(); value != -1; value = TheKeyBuffer.Read()) //Button 1 and Button 3 increase and decrease trip level |
MarcoAmerena | 0:f5fbeaf3592c | 78 | { |
MarcoAmerena | 0:f5fbeaf3592c | 79 | switch(value) |
MarcoAmerena | 0:f5fbeaf3592c | 80 | { |
MarcoAmerena | 0:f5fbeaf3592c | 81 | case KEY_UP: |
MarcoAmerena | 0:f5fbeaf3592c | 82 | level += 0.1; |
MarcoAmerena | 0:f5fbeaf3592c | 83 | break; |
MarcoAmerena | 0:f5fbeaf3592c | 84 | |
MarcoAmerena | 0:f5fbeaf3592c | 85 | case KEY_DOWN: |
MarcoAmerena | 0:f5fbeaf3592c | 86 | level -= 0.1; |
MarcoAmerena | 0:f5fbeaf3592c | 87 | break; |
MarcoAmerena | 0:f5fbeaf3592c | 88 | } |
MarcoAmerena | 0:f5fbeaf3592c | 89 | } |
MarcoAmerena | 0:f5fbeaf3592c | 90 | |
MarcoAmerena | 1:9bf30974727c | 91 | if(d >= level) //Led will light up if temperature is above trip level |
MarcoAmerena | 0:f5fbeaf3592c | 92 | { |
MarcoAmerena | 0:f5fbeaf3592c | 93 | led = 1; |
MarcoAmerena | 0:f5fbeaf3592c | 94 | } |
MarcoAmerena | 0:f5fbeaf3592c | 95 | else if(d <= leveloff) |
MarcoAmerena | 0:f5fbeaf3592c | 96 | { |
MarcoAmerena | 0:f5fbeaf3592c | 97 | led = 0; |
MarcoAmerena | 1:9bf30974727c | 98 | } |
MarcoAmerena | 0:f5fbeaf3592c | 99 | } |
MarcoAmerena | 0:f5fbeaf3592c | 100 | } |