Gesture Sensor Help
NWCCTV
Posts: 3,629
In the attached code everything works fine but I have a bit of an issue. At the end of the code I input an IF statement to flash an LED on Pin 13 when sampleCount > 100. The problem is that sampleCount seems to increment automatically. So, I need to figure out what command to use for the ALS VIS, ALS IR, PS1, PS2 and PS3 values since they see the ones to increase and decrease as my hand moves in front of the device. Thanks.
{{
File: Si1143_Sensor_Demo.spin
Version: 1.0
Date: March 14, 2012
Author: Kevin McCullough
Company: Gecko Engineering
"Turning good ideas into great products."
Phone: 541.660.2314
Email: [EMAIL="Kevin@GeckoEngineering.com"]Kevin@GeckoEngineering.com[/EMAIL]
Web: [URL="http://www.GeckoEngineering.com"]www.GeckoEngineering.com[/URL]
Revision History:
v1.0 - 3/14/2012
Initial release.
Description:
This object demonstrates the use of the Si1143.spin driver for the "Si1143 Proximity
Sensor" (Parallax PN: 28046). In this simple demo, the application runs in a loop
and manually polls the driver for new measurements, then prints the values out to
the serial terminal.
Connection Diagram:
VIN = 3.3V
┌──────┐ ┬ ┬ ┬ ┬ ┌────────────────┐
│ │ │ │ │ │ │ [‣] │
│ │ R R R ┌─┼─┤GND │
│ │ │ │ │  └─┤VIN ┌─────────┘
│ P2├───┻───┼───┼────────┤INT │
│ P1├───────┻───┼────────┤SCL │
│ P0├───────────┻────────┤SDA │
│ │ │ │
└──────┘ └──────┘
Propeller MCU Si1143 Proximity
(P8X32A) Sensor (28046)
R = 4.7kΩ
}}
CON
_clkmode = xtal1 + pll16x
_clkfreq = 80_000_000
'Pins used to connect to the "Si1143 Proximity Sensor" module
SDA_PIN = 0
SCL_PIN = 1
INT_PIN = 2
CURSOR_X = 10 'This value sets the left alignment for printing all the values
OBJ
sensor : "Si1143"
debug : "FullDuplexSerial"
pin : "Input Output Pins"
time : "Timing"
VAR
long samples[5]
long sampleCount
PUB RunDemo | index
'Start the serial terminal to display debug text
debug.Start(31, 30, 0, 115200)
'Start the Si1143 device driver
sensor.Start(SDA_PIN, SCL_PIN, INT_PIN)
'Store the baseline average offset values (accomodates for optical leakage
'between the LEDs and the sensor).
sensor.PsBaselineSet 'NOTE: THIS LINE CAN BE COMMENTED OUT TO GET
'THE RAW VALUES FOR PS1, PS2, & PS3
'Print startup text to the terminal
debug.tx(0)
debug.str(string("=================="))
debug.tx(13)
debug.str(string("Si1143 Sensor Demo"))
debug.tx(13)
debug.str(string("=================="))
debug.tx(13)
debug.str(string("Sample# = "))
debug.tx(13)
debug.str(string("ALS VIS = "))
debug.tx(13)
debug.str(string("ALS IR = "))
debug.tx(13)
debug.str(string("PS1: = "))
debug.tx(13)
debug.str(string("PS2: = "))
debug.tx(13)
debug.str(string("PS3: = "))
'Stay in this loop and take measurements forever
repeat
'Get a new set of samples
sampleCount := sensor.SampleOnce(@samples)
'Display the sample count value
debug.tx(2) 'Position cursor (x,y)
debug.tx(CURSOR_X) 'X
debug.tx(3) 'Y
debug.dec(sampleCount) 'Display value
debug.str(string(" "))
'Display all the sample values returned in the array
repeat index from 0 to 4
debug.tx(2) 'Position cursor (x,y)
debug.tx(CURSOR_X) 'X
debug.tx(index + 4) 'Y
debug.dec(samples[index]) 'Display value
debug.str(string(" "))
if sampleCount > 100
pin.High(13)
time.Pause(200)
pin.Low(13)
time.Pause(200)
Comments
This is a shortcut to this (don't enter the code below into the program):
Now that you have name for the index numbers you can use:
if samples[ALS_VIS] > 100 ' or use other index name for the other values pin.High(13) time.Pause(200) pin.Low(13) time.Pause(200)You would also need the detector chip, (Si1143), uncovered. It's the chip above LED1 with the transparent window.
http://www.parallax.com/sites/default/files/downloads/28046-Si1143-Gesture-Sensor-v1.2.pdf
Just kidding.