How do I give a radio control car autonomous control

[Kenjones1935]

Before we all conversed I purchased two books from amazon.com.

Sandhu's 'Running Small Motors with PIC microcontrollers' has all its code in PIC BASIC PRO. 2000+ lines according to the cover.

Parchizadeh and Vuksanovic's 'PIC Projects - A Practical Approach' has all its code in both assembly and C.

Many (many!) years ago I coded in assembly language a water cooled, vacuum tube constructed architecture eerily similar to the 16F877. We developed shared symbol tables and a library of shared routines. Do these exist in the WEB based world of Microchip PIC?

HI-TECH offers a freeware C - LITE compiler. The price is right, but this forum talks PIC BASIC. Decisions decisions...


Ken

[mackrackit]

Here is the place for ASM and C.
http://www.piclist.com/techref/piclist/index.htm
Start with the "Beginners Checklist" link.

Your project would be fun to have around here but cost is cost.

In ASM for Micros symols are not used.
Here is an example to blink one LED with PBP

    DEFINE OSC 20
    @ __config _HS_OSC & _WDT_ON & _LVP_OFF & _CP_OFF
START:
    HIGH PORTD.1
    PAUSE 250
    LOW PORTD.1
    PAUSE 250
    GOTO START

Here is an example to blink one LED in ASM.

;	processor	16f876a
	#include 	<p16f876a.inc>
	ERRORLEVEL -224
	; Configuration bits
	__CONFIG _HS_OSC & _WDT_OFF & _PWRTE_ON & _BODEN_OFF & _LVP_OFF & _CPD_OFF & _WRT_OFF & _DEBUG_OFF & _CP_OFF
	CBLOCK 0x20   ; RAM starts at address 20h
	d1
	d2
        ENDC
	org 0x0000      ; start address = 0000h	
	movlw		B'00000000'
	tris		PORTA
	movlw		B'00000000'
	tris		PORTB
	movlw		B'00000000'
	tris		PORTC
	movlw		B'00000111'
	movwf		CMCON
	movwf		ADCON1
	clrf		PORTA
	clrf		PORTB
	clrf		PORTC
	movlw		B'00000111'
	option
loop:
	bsf			PORTC,3
	call Delay
	bcf			PORTC,3
	call Delay
	goto loop

; Delay = 0.1 seconds
; Clock frequency = 4 MHz
; Actual delay = 0.1 seconds = 100000 cycles
; Error = 0 %
Delay	;99993 cycles
	movlw	0x1E
	movwf	d1
	movlw	0x4F
	movwf	d2
Delay_0
	decfsz	d1, f
	goto	$+2
	decfsz	d2, f
	goto	Delay_0	;3 cycles
	goto	$+1
	nop		;4 cycles (including call)
	return
	end

[Kenjones1935]

I hate .pdf reference manuals. I will stay with the group and purchase PIC BASIC (according to the picture it comes with both a CD and a real 20th Century paper manual). PIC BASIC LITE does not appear in the Microchip SEARCH engine. Oh, well. What's another $250? (I just paid $374 for the left tail light of my car. It comes as one big assembly. All I did was break the red plastic lens!)

I was intimidated by the 270 page and 290 page .pdf files which purported to tell me all I need to know to write in MPASM.

I have coded in assembly, in Pascal, in C and C++ (even fortran way back when). Never in Basic. I hope you guys a patient.

Ken

[mackrackit]

Glad to see you are sticking around.

I have coded in assembly, in Pascal, in C and C++ (even fortran way back when). Never in Basic. I hope you guys a patient.

Melanie is the only one to worry about.
I hear she has a whip

[Kenjones1935]

The demo PIC Assembly programs are straight forward. I understood them. They work.

I was happy to discover that the HI-TECH PICC lite integrates into MPLAB IDE easily. It offers a demo program that is much more complicated than the assembly shots. It worked here in sunny scenic Fitchburg Mass.

The MPLAB IDE contains another free C compiler. We'll see what it offers.

Ken

[Kenjones1935]

I ordered five DPDT relay switches early last week from Newark. They have not arrived yet. I have not prototyped a digital/analog circuit is over thirty years. We used wire wrap in the day. Yesterday I bought from Radio Shack solder, a low power iron, some small tools, and three different kinds of proto boards. It is not obvious how we physically attach capacitors, resistors, transistors, to these boards. I gather the inline chips get plugged into sockets that have pins which fit into these proto boards. Their back sides are designed for some kind of wire attachment. Wire wrap?

Can you guys point me to some revealing photographs?

Ken

[mackrackit]

Can you give the Radio Shack part number or picture of what you have?