Junebug
Kit $49
So you want
enter the exciting world of microcontrollers, then this kit was
designed for you.
Here's the
Junebug Assembly Manual be sure to check for new update,
currently April 20, 2008
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USB based
PICKit2 compatible PIC Programmer / debugger for many 16F & 18F
PICs
-
Supports
both MPLAB IDE 8.x and standalone PICKit2 software
-
Onboard
tutor support for either 16F88 or 18F1320
-
USB powered
programmer & tutor, can supply up to 100ma @ 5VDC to your target
project
-
3.3V support is possible by adding a pair of clamp diodes to the
PGC & PGD pins
* the SE (Student Edition) does not have a programmable
2.5V - 5V VDD or the internal EEPROMs found on the genuine Microchip
PICkit2.
Recommend reading
Microprocessors: From Assembly Language to C Using the PIC18Fxx2
by Reese, Robert B.
Originally
written as Mississippi State University course material at
664 pages (plus a CD ROM)
Mr Reese's website
contains the source code HiTechC (in the book)
converted to C18 and the well written lecture notes & quiz
available for free download.
Swordfish BASIC
Swordfish BASIC is an excellent Structured Modular BASIC compiler
for the 18Fxxx series of PIC microcontrollers. The developers have a
free Student Edition, download it from the
Swordfish website.
It has a very generous limit of 256 bytes of RAM but no limit on the
ROM size.
It's a powerful full featured language, if you have a Junebug or
Mongoose we've got a couple of modules for it, copy the modules into
Swordfish Library directory.
JUNEBUG.BAS the Junebug module
0.93beta supports the LEDs and pushbuttons.
MONGOOSE.BAS the Mongoose
module also in beta, easy PWM Motor control.
Here's a simple Swordfish BASIC SE program that flashes Junebugs
LEDs in sequence.
// Name : BLINK_1.BAS
Device
= 18F1320
Clock = 4
// 4MHz clock
Include "junebug.bas"
Dim Count As Byte
OSCCON = $62
// select 4MHz internal clock
ADCON1 = %11110101
// digital I/O except RA1 & RA3
While True
For Count = 0 To 6
LED(Count)
// light LED(1..6) or none
LED(0)
DelayMS(300) // delay
in 1000s of a second
Next
Wend
// repeat forever
End
And here's a reaction
time game called Ready Steady GO!
//
LEDs 3,2,1 countdown, press button #1 as soon as LED 1 is lit
// DIP Switch #4 must be on to see results using PICkit2 UART
Tool
Device = 18F1320
Clock = 8
// 8MHz clock
Include
"junebug.bas"
Include
"convert.bas"
Include
"usart.bas"
Dim Qualify, Temp As Byte
Dim Time As String
' total time in us
Interrupt ButtonPress()
T0CON.7 = 0 ' stop the
timer
If Qualify = 0
Then
Write("
Too Soon! You have to wait till LED #1 is lit.",13,10)
LED(6)
Else
Temp = TMR0L
' loads TMR0H
Time
= DecToStr(((TMR0H*256)+Temp)*16,6)
Write("
Your time was 0.",Time,"
Seconds.",13,10)
LED(4)
EndIf
INTCON.4 = 0
While true
Wend
End Interrupt
OSCCON = $72 // 8 MHz
clock
SetBaudrate(br9600)
INTCON2.7 = 0 ' weak
pullups on
INTCON.1 = 0
' INT0IF
INTCON.4 = 1 ' INT0IE
INTCON2.6 =0
' INTEDG0 falling edge trigger
ADCON1 = %11110101
Write("When LED 1 lights
press button #1.",13,10)
Qualify = 0
T0CON = $04 ' 1/32
prescaler on timer 0, 16 bit mode
TMR0L = 0
' clear the timer
TMR0H = 0
LED(3) ' Ready
DelayMS(1000)
INTCON.1 = 0 ' clear the
interrupt flag
Enable(ButtonPress)
LED(2) ' Steady
DelayMS(500)
Qualify = 1 ' don't
disqualify yourself by pressing too early
T0CON.7 = 1
' start the timer
LED(1)
' GO
DelayMS(1000)
' 1 second timeout
INTCON.4 = 0
' too slow disable interrupt
LED(5)
Write(" Too Slow, press RESET
to try again.",13,10)
While true
Wend
End
Junebug PIC Laboratory