root / branches / autonomous_recharging / code / projects / autonomous_recharging / charging_station / analog.h @ 363
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1 | 85 | bcoltin | /*
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2 | analog.h - Contains definitions and function prototypes for using the
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3 | ADC to detect analog signals on pins AN0 - AN7
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4 | AN6 and AN7 are used for the wheel and battery
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5 | |||
6 | The pins labeled E6 and E7 are external interrupt pins and are not related to analog
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7 | |||
8 | author: CMU Robotics Club, Colony Project
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9 | code taken from the fwr analog file (author: Tom Lauwers)
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10 | */
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11 | |||
12 | #ifndef _ANALOG_H
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13 | #define _ANALOG_H
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14 | |||
15 | #define AN0 0x00 |
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16 | #define AN1 0x01 |
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17 | #define AN2 0x02 |
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18 | #define AN3 0x03 |
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19 | #define AN4 0x04 |
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20 | #define AN5 0x05 |
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21 | #define AN6 0x06 |
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22 | #define AN7 0x07 |
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23 | |||
24 | #define WHEEL_PORT AN6
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25 | #define BATT_PORT AN7
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26 | |||
27 | /*
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28 | Call this function before reading from the analog ports
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29 | turns on the ADC
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30 | */
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31 | void analog_init(void); |
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32 | |||
33 | /*
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34 | returns an 8-bit number from the desired analog port
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35 | argument should be one of the constants AN0 - AN7
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36 | behavior is undefined otherwise
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37 | analog_init() must be called before a call to this function
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38 | */
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39 | unsigned int analog8(int which); |
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40 | |||
41 | /*
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42 | returns a 10-bit number from the desired analog port
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43 | argument should be one of the constants AN0 - AN7
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44 | behavior is undefined otherwise
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45 | analog_init() must be called before a call to this function
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46 | */
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47 | unsigned int analog10(int which); |
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48 | |||
49 | /*
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50 | returns the current value (0-255) of the wheel
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51 | analog_init() must be called before a call to this function
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52 | */
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53 | int wheel(void); |
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54 | |||
55 | /*
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56 | returns the current voltage of the battery (deciVolts)
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57 | analog_init() must be called before a call to this function
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58 | */
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59 | int battery(void); |
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60 | |||
61 | #endif |