Colony

 * @defgroup analog Analog

 * Functions for manipulation the ADC on the dragonfly board.

 * All definitions may be found in analog.h.

 *

/**

 * @brief Initialize analog ports. Will start running a loop

 *  if start_conversion is ADC_START.

 * 

 * Initializes the ADC.

 * Call analog_init before reading from the analog ports.

 *

 * @see analog8, analog10, analog_get8, analog_get10

 **/

void analog_init(int start_conversion);

/**

 * @brief starts the analog loop. Doesn't do anything if the loop is already running.

 *

 * Starts the analog update loop. Will continue to run

 * until analog_stop_loop is called.

 *

 * @see analog_stop_loop

 **/

void analog_start_loop(void);

/**

 * @brief Stops the analog loop. Doesn't do anything if the loop is already stopped.

 *

 * Stops the analog update loop. If there is a current

 * read, it will finish up and be stored before the loop

 * is interrupted. No further updates will be made until

 * the loop is started again.

 *

 * @see analog_start_loop

 **/

void analog_stop_loop(void);

/**

 * @brief Returns an 8-bit analog value from the look up table. Use this instead of analog_get8.

 *

 * Returns the 8-bit analog conversion of which from

 * the lookup table. If the requested port is the BOM_PORT

 * you will get an automatic 0 since the BOM_PORT is not

 * read in the loop and not stored. If you need that port

 * you should use the functions in bom.c. There is an analog_get8

 * function which for instant lookups but should be avoided unless

 * you know what you're doing.

 *

 * @param which the port that you want to read

 *

 * @bug may cause a seg fault if which is a larger value

 * than exists in an_val table. Not sure if we should fix

 * this or not since it would add overhead.

 *

 * @return 8-bit analog value for the which port requested

 *

 * @see analog10, analog_get8, analog_get10

 **/

/**

 * @brief Returns an 10-bit analog value from the look up table. Use this instead of analog_get10.

 *

 * Returns the 10-bit analog conversion of which from

 * the lookup table. If the requested port is the BOM_PORT

 * you will get an automatic 0 since the BOM_PORT is not

 * read in the loop and not stored. If you need that port

 * you should use the functions in bom.c. There is an analog_get10

 * function which for instant lookups but should be avoided unless

 * you know what you are doing.

 *

 * @param which the port that you want to read

 *

 * @bug may cause a seg fault if which is a larger value

 * than exists in an_val table. Not sure if we should fix

 * this or not since it would add overhead.

 *

 * @return 10-bit analog value for the which port requested

 *

 * @see analog8, analog_get8, analog_get10

 **/

/**

 * @brief Read the position of the wheel.

 *

 * Returns the current position of the wheel, as an integer

 * in the range 0 - 255.

 * analog_init must be called before using this function.

 *

 * @return the orientation of the wheel, as an integer in

 * the range 0 - 255.

 *

 * @see analog_init

 **/

/**

 * @brief Read an 8-bit number from an analog port. Loop must be stopped for this to work.

 *

 * Reads an 8-bit number from an analog port.

 * analog_init must be called before using this function.

 * The analog loop must also be stopped before using this

 * function or you will mess up the lookup table. You

 * must also reenabled the loop when you are done unless

 * you are doing more instant reads. See analog_stop_loop

 * and analog_start_loop for more information about the loop.

 * 

 * @param which the analog port to read from. One of

 * the constants AN0 - AN7.

 *

 * @return the 8-bit input to the specified port

 *

 * @see analog_init, analog_get10, analog8, analog_stop_loop,

 * analog_start_loop

 **/

/**

 * @brief Read a 10-bit number from an analog port. Loop must be stopped for this to work.

 *

 * Reads an 10-bit number from an analog port.

 * analog_init must be called before using this function.

 * The analog loop must also be stopped before using this

 * function or you will mess up the lookup table. You

 * must also reenabled the loop when you are done unless

 * you are doing more instant reads. See analog_stop_loop

 * and analog_start_loop for more information about the loop.

 * 

 *

 * @param which the analog port to read from. Typically

 * a constant, one of AN0 - AN7.

 *

 * @return the 10-bit number input to the specified port

 * 

 * @see analog_init, analog_get8, analog10, analog_stop_loop,

 * analog_start_loop

 **/