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The communication cable to the PC is made as specified in the PicBasic Compiler Manual.
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1.0K |
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DB9 |
| pin |
--/\/\/\---- |
RS-232 RX |
Pin 2 |
| GND |
------------ |
RS-232 GND |
Pin 5 |
This Project displays A to D values on your computer screen as the occur.
It is very handy for setting up sensors as you develop programs for your
robot.
See "PicDisplay" for more details on serial hookup.
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'** Displaying A to D Data on your computer ***
'**********************************************
'@ Platform: PicBasic
'@ Version: 1.0
'@ Author: Brian Patton (brianp@robodyssey.com)
' Robodyssey Systems, LLC. - www.robodyssey.com
'@ Last Updated: Feb 19, 2004
'*********Materials*****************************
' 1 Robodyssey PicPac MotherBoard
' 1 Pic16F876 or similar
' 1 Voltage Divider board
' 1 Photo Resistors
' PicBasic Compiler and a programmer
'***********************************************
' Register Locations
Symbol TRISA = $85 ' Register Location of TRISA
Symbol ADCON0 = $1F ' Register location of ADCON0
Symbol ADCON1 = $9F ' Register Location of ADCON1
Symbol ADRESH = $1E ' Register Location of ADRESH
'*****Initiation********************************
Init:
Dirs = %11111111 ' Set all Port B to output
'*****Main Code Block Area**********************
'************ A/D Read *************************
Start:
poke TRISA, %11111111 'Set all PortA Input
poke ADCON1, %00000010 'xxxx0010 - PortA 0-4 analog inputs, 5-7 digital inputs
'0xxxxxxx Sets result to Left justified
'1xxxxxxx Sets result to Right justified
AD0chk:
poke ADCON0, %11000001 'Set A/D to RC Osc, Channel 0, A/D converter ready
'xx000xxx-Chan 0(RA0), xx001xxx-Chan 1(RA1),
'xx010xxx-Chan 2(RA2), xx011xxx-Chan 3(RA3),
'xx100xxx-Chan 4(RA4), xx101xxx-Chan 5(RA5),
'xx110xxx-Chan 6(RA6), xx111xxx-Chan 7(RA7),
b0 = %11000101 'xxxxx1xx - on, xxxxx0xx - off
Poke ADCON0,b0 ' Turn on the conversion at Bit 2
AD0fin:
Pause 5
Peek ADCON0,b0
If b0 = %11000101 Then AD0fin ' Wait for low on bit-2 of ADCON0, conversion finished
Peek ADRESH,b3
'************ Output to Display ******************
Serout 0,N2400,(#b3,10,13) 'Display the AD value stored in b3
Pause 500 'Chill for 1/2 second
'*************************************************
goto AD0chk 'Start it all over again
end
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Robodyssey Systems manufactures Robot Kits including Autonomous Mobile
Walking Robots, Wheeled Robots, Talking Robots, Expressive Robots, and
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and electronics into the classroom.
We hope you enjoy our web site. Feel free to use any robotic resources.
Robodyssey is your complete solution for Educational Robotics as well as Hobby Robotics.
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