/*------------------------------------------------------------------------------------------------------------
read light values into an array
//recording light values from light sensor
comedi_data_read(device,0,3,1,AREF_GROUND,&record_my_light[i]);
record_my_light[i] = record_my_light[i] & 0xfff; //^^we must mask out 12bits to use this data
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
COMEDI_DATA_READ/WRITE FUNCTION EXPLAINED
comedi_data_[read/write](device,subdevice,channel,range,AREF_GROUND,data)
device - box
subdevice - section of box (digital (2),DAC (1), ADC (0))
channel - DAC 0 = left channel(left motor)
1 = right channel(right motor)
- ADC 0 = a0
1 = a1
2 = a2
3 = a3
range - '0' = 0-> 10 v
- '1' = '-10' -> '+10v'
aref always = AREF_GROUND
data = data i wanna pass/store/record....etc
--------------------------------------------------
HOW TO USE FOR LIGHT FOLLOW
-- DEVICE IS ALWAYS UNCHANGED
-- SUBDEVICE IS THE ADC ON THE RACK,= 0
-- CHANNEL IS 3 -; FOR EXAMPLE.. SENSOR(EYE ON PATCH BOX)
IS PLUGGED INTO A3 = 3
-- RANGE WILL BE -10 -> +10 = 1
-- DATA WILL BE AN ARRAY OF VALUES THAT U WILL READ IN
e.g>> comedi_data_read(device,0,3,1,AREF_GROUND,&record_my_light[i]);
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
*/
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++=
MOVING THE STEPPER MOTOR
the stepper motor for the light sensor has two sensors to test whether the stepper motor has reached
full clockwise scan or full anti clockwise scan.
The stepper motor cannot simply continue after 360° in a clock fashion, it reaches an end point at which
point after a full rotation it must return in the opposite direction.*/
//stepper values are: 10,6,5,9
//stpr_motor_value1 = 10
//stpr_motor_value2 = 6
//stpr_motor_value3 = 5
//stpr_motor_value4 = 9
/*The light stepper motor has two sensors which are active low.. (see below for e.g)
so what you must do is record a light intensity into an array and then move the stepper value one place (10 then 6 then 5 then 9)...
//moving the stepper motor the light sensor is attached to
stpr_sensor_1eft = the value that the cable is plugged into i.e top plug = 128
while(stpr_sensor_1eft & stpr_sensor_1eft != 0)
{
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value1);
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value2);
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value3);
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value4);
}
..now reverse direction of motor
while(stpr_sensor_right & stpr_sensor_right != 0)
{
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value4);
now read light
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value3);
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value2);
comedi_dio_bitfield(device,subdevice,0xff,&stpr_motor_value1);
}
*/