PIC Microcontoller Input / Output Methods

• Ports

  • Parallel
    • IDE
    • Centronix
  • Serial (RS232 , RS-485 (RS485), I2C, SPI)
  • Radio Frequency (RF)
  • Port Pin Tips, Tricks, Traps, Gens and Snares
  • Detecting riseing and falling edge events
     

• Peripherals

  • Visual: PIC specific LCD, LED, Video. Also: Displays
    • PIC source for a thermal printer controller
    • PICSpect A PIC based Video display and Spectrum Analyzer
  • Audio
  • Mechanical ( also: Generic Servos, Steppers, Motors, and Relays )
    • PWM
    • Servos, Steppers, Motors
    • Decoding Quadrature Encoders
    • PIC Tachometer by Tony Nixon
    • Jinxs' 16F84 4 button directional controller pluges in place of an MS Mouse
    • Keyboards / Buttons
  • Memory
    • SIMM interface
    • IDE Hard drives and FLASH
    • Ken Websters PIC16C74 serial port multiplexer. This includes a complete SRAM interface and memory test code.

• Networks - OSI 3

  • Modems
  • "PICs in cyberspace" (embedded internet PICs), TCP/IP@
    

• Data Link - Busses and Com Standards - OSI 2

  • CRC
  • Calculating Parity
  • I2C, IIC
  • ibutton (routine to search the ibutton bus) +
  • RS232 serial, IR to serial,
  • SPI
  • X10
  • DTMF
     

• Physical layer - Analog Signal Generation and Detection - OSI 1

  • PIC PWM, A2D, DSP, D2A
  • Pulse counter, Pulse Width
  • Expand 3 IO pins into 8 outputs with a 74HC595
  • Temperature
    • ...with the Watch Dog Timer.
  • High speed serial IO pin sampleing
  • Detecting bit changes
  • TTL / CMOS logic level conversion
  • See:
    • http://www.edtn.com/embapps/emba057.htm Digital Frequency Synthesis
    • ByteCraft: A Touch Sensitive Circuit, Software A/D and D/A Converters, Non-Linear Data Transformations
    • Scott Dattalo: Tweaking a PIC for debounce, and vertical counters.
    • 16F876 USART, I2C, EERAM read/write, port setup, ISR, and full initialization sample from Tony Kübek of Flintab AB [tony.kubek at flintab.com]

Also:

• General Input / Output (not PIC specific)
• http://www3.mistral.co.uk/brian.clewer/ - i/o and interfaceing

See also:

• http://store.compute-aid.com/cgi-bin/category.cgi?category=107&item=WebControl&type=store WebControl™ is a network enabled IO controller with software loaded to allow web management over network. You can of course develop your own software for it, or directly use the loaded software for almost every purpose.+
• http://ubasics.com/adam PIC uControllers, DMX-512, Phase Controlled light dimming, Rotary encoders, and a very little bit on TI graphing Calculators and power supply stuff.
• Ed Schlunder of K9spud LLC refers to " http://www.k9spud.com/sdcard/ Here's how to interface an SD Card to the dsPIC30F4013 using SPI." +
• http://www.bobblick.com/techref/projects/lcdterm/lcdterm.html Correct link to Bob Blick's LCD RS232 terminal.
• http://www.geocities.com/ykirill/sas/sas1_1.html A simple car alarm with an IR transmitter and reciever using PIC microcontrollers.

Interested:

• spamfa13881 at iperbole.bologna.it

See:

• /techref/member/em-lll-565a/index.htm Member Homepage for EM-LLL-565a+
• /techref/member/ddd-nnn-p83/index.htm Member Homepage for ddd-nnn-P83+
• /techref/microchip/language/c/io/lcd/hitachilcd-ak/index.htm Character LCD Interface+
• /techref/microchip/steppers.htm PIC Microcontoller Input / Output Methods For Stepper Motors+
• /techref/microchip/motors.htm PIC Microcontoller Input / Output Methods for Perminant Magnet Motors+
• /techref/microchip/io/dev/motors.htm PIC Microcontoller Input / Output Methods for Perminant Magnet Motors+
• /techref/microchip/io/audio.htm PIC Microcontoller Audio Input / Output +
• /techref/microchip/math/sqrt/fpsqrt24.htm PIC Microcontoller Math Method 24 Bit Floating Point Square Root+
• /techref/microchip/servos.htm PIC Microcontoller Input / Output Methods For Servo Controls+
• /techref/microchip/dtmf.htm PIC Microcontoller Input / Output Methods for DTMF
• /techref/microchip/ios.htm PIC Microcontoller Input / Output Methods+
• /techref/microchip/index.htm Technical Reference - MicroChip Technologies - PIC Embedded Controller+

Interested:

Questions:

• spamb_rachid85 at yahoo.fr asks:

  I'd like to use the PIC with an RF transceiver (CC2420 from chipcon), If I use the IEEE802.15.4 MAC layer, do you know any resources that can help writing my application?
  Can I just program the PIC without using this MAC (then of course it will not be IEEE802.15.4 compliant )

• bert botha of Kulkoni-ITS South Africa asks: " Has anyone interfaced a 16f628 to a nokia6110 or a gsm module where the module/phone sends specific text to a predetermined number?" +

Code:

• Sameer Sathe of sameerksathe shares this code:

  his is the code to actually enter the code into mcu via USART , it will only accept the code unless & until u only press capital 'S'. Without using any Interrupt , its a pooling type code 
  
  
  ;--------------------------------------------------------------------------------------		
  USART_REC
  
  		BANKSEL PIR1
  		btfss	PIR1,RCIF				; Test for received data flag
  		GOTO USART_REC_returns
  		BTFSC RCSTA,OERR
  		goto overerror                   ; check for over run error
  		BTFSC RCSTA,FERR
  		GOTO frameerror                  ; CHECK FOR FRAMING ERROR
  		movf	RCREG,W					; Store data in W
  		MOVWF	HAULT_KEY
  	    goto HAULT_DECIDE
  	
  
  overerror
  	bcf	rcsta,cren	;pulse cren off...
  	movf	rcreg,w		;flush fifo
  	movf	rcreg,w		; all three elements.
  	movf	rcreg,w
  	bsf	rcsta,cren	;turn cren back on.
  					;this pulsing of cren
  					;will clear the oerr flag.
  					;enable interrupts.
  	goto	USART_REC		;try again...	
  
  frameerror
  	movf	rcreg,w		;reading rcreg clears ferr flag.
  	bsf	intcon,gie	;enable interrupts.
  	goto	USART_REC		;try again...	
  		
  		
  ;--------------------------------------------------------------------------------------------
  HAULT_DECIDE                        ; CHECK IF THE KEY PRESSED ID 'S' OR RESUME NORMAL SEND DATA FUNCTION
  	MOVLW 0X53   ; capital S
  	SUBWF HAULT_KEY
  	BTFSS STATUS,C
  	goto USART_REC_returns
  	BTFSS STATUS,Z
  	goto USART_REC_returns
  	continue to key enter routine
  

  +

Archive:

• List post "Tri-state pin with three functions" +

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