analog.h File Reference

Contains functions and definitions for using the ADC. More...

#include <inttypes.h>

Go to the source code of this file.

Data Structures
struct	adc_t
	Struct to hold the value of a particular analog port. More...
Defines
#define	AN0   0x00
	Analog port 0.
#define	AN1   0x01
	Analog port 1.
#define	AN2   0x02
	Analog port 2.
#define	AN3   0x03
	Analog port 3.
#define	AN4   0x04
	Analog port 4.
#define	AN5   0x05
	Analog port 5.
#define	AN6   0x06
	Analog port 6.
#define	AN7   0x07
	Analog port 7.
#define	AN8   0x08
	Analog port 8.
#define	AN9   0x09
	Analog port 9.
#define	AN10   0x0A
	Analog port 10.
#define	AN11   0x0B
	Analog port 11.
#define	AN12   0x0C
	Analog port 12.
#define	AN13   0x0D
	Analog port 13.
#define	AN14   0x0E
	Analog port 14.
#define	AN15   0x0F
	Analog port 15.
#define	BOM_PORT   AN0
	BOM_PORT analog port for BOM.
#define	EXT_MUX   AN7
	EXT_MUX analog port.
#define	WHEEL_PORT   AN10
	Analog port for the wheel.
#define	BATT_PORT   AN11
	Analog port for the battery voltage detector.
#define	ADC_START   1
#define	ADC_STOP   0
#define	ADMUX_OPT   0x60
Functions
void	analog_init (int start_conversion)
	Initialize analog ports. Will start running a loop if start_conversion is ADC_START.
void	analog_start_loop (void)
	starts the analog loop. Doesn't do anything if the loop is already running.
void	analog_stop_loop (void)
	Stops the analog loop. Doesn't do anything if the loop is already stopped.
unsigned int	analog8 (int which)
	Returns an 8-bit analog value from the look up table. Use this instead of analog_get8.
unsigned int	analog10 (int which)
	Returns an 10-bit analog value from the look up table. Use this instead of analog_get10.
int	wheel (void)
	Read the position of the wheel.
unsigned int	analog_get8 (int which)
	Read an 8-bit number from an analog port. Loop must be stopped for this to work.
unsigned int	analog_get10 (int which)
	Read a 10-bit number from an analog port. Loop must be stopped for this to work.

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Detailed Description

Contains functions and definitions for using the ADC.

Copyright (c) 2007 Colony Project

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Contains definitions and function prototypes for using the ADC to detect analog signals on pins AN0 - AN7. AN6 and AN7 are used for the wheel and battery.

The pins labeled E6 and E7 are external interrupt pins and are not related to analog.

Author:

Colony Project, CMU Robotics Club, based on firefly code by Tom Lauwers