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PICDEM™ 17 DEMONSTRATION BOARD U SER ’ S GUIDE 2001 Microchip Technology Inc. DS39024B.
DS39024B 2001 Microchip Technology Inc. “All rights reserved. Copyright © 2001, Microchip T echnology Incorporated, USA. Information contained in this publication regarding device applications and the like is i ntended t hrough suggestion only and may be superseded by updates.
2001 Microchip Technology Inc. DS39024B-page 3 M PICDEM ™ 17 DEMON STRATION BOARD USER ’ S GUIDE T able of Contents PREFACE Welcome ... .............. .............. .......... .............. .............. .............. ...... 1 Documentation Lay out .
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 4 2001 Microchip Technology Inc. 2.7 Down loading HEX Files to t he PICDEM 17 Demo nstrati on Board . 9 2.8 Running HEX files from the PICDEM 17 Demonstration Bo ard .... 10 2.9 Runnin g Diagno stics on the P ICDEM 17 Demonstr ation Boar d .
2001 Microchip Technology Inc. DS39024B-page 5 Table of Contents 6.2 Highlights .. .............. .............. .............. .............. .............. .............. 57 6.3 MPLAB IDE P roject Files ........... .............. .............. .
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 6 2001 Microchip Technology Inc. App endi x B. RS-2 32 Co mm uni cati on Pro tocol B.1 Introductio n .............. .............. .............. .............. .............. .....
2001 Microchip T echnology Inc. DS 39024B-page 1 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 PREF ACE We l c o m e Thank y ou for pur chasing t he PICDEM 1 7 produc t demonstr ation bo ard for the PIC1 7C7XX family of microcon troller s from Mic rochip T ech nology Incor porated.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 2 2001 Microchip Technology Inc. Chapter 8: SWITCH.C Description – This chap ter prov ides a d etailed descripti on of the m emory m apping of th e PIC17 C756A and provide s sour ce code to i nterface to the m emory mapp ed swi tches and LEDs.
2001 Microchip T echnology Inc. DS 39024B-page 3 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 1. About PICDEM 17 Demonstration Boa rd 1.1 Introd uc tion This c hapter des cribes t he feature s of the P ICDEM 17 dem onstration board.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 4 2001 Microchip Technology Inc. 1.4 External FLASH Memor y The PICDEM 17 demo nstratio n board sup ports all o perating modes of th e PIC17 C7XX PIC micro ® microcontro ller . H owever , the Mon itor progr am uses the extend ed micr ocontro ller mod e of oper ation.
2001 Microchip T echnology Inc. DS 39024B-page 5 About PICDEM 17 Demons tr ation Board 1.8 Osci llator Options The PICDEM 17 demo nstratio n board l ayout wil l only a ccept a can ned oscill ator . T he use o f a crys tal or ceram ic reso nator r equires that the us er modify th e board.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 6 2001 Microchip Technology Inc. 1.14 CAN Bus Interface The PICDEM 17 demo nstratio n board p rovides a simple interfac e to a CAN Bus.
2001 Microchip T echnology Inc. DS 39024B-page 7 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 2. Using the PICDEM 17 Monitor 2.1 Introd uc tion This chapter discus s es how to use the Mon itor progr am to inte ract with the PIC17C7X X devic e on the P ICDEM 17 de monstrat ion bo ard.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 8 2001 Microchip Technology Inc. 2.4 Using the PICDEM 17 Monitor Program The Moni tor progr am uses a serial p ort on the Host PC. It c urrent ly suppor ts COM1 throug h COM 4. The co mmand li ne to exec ute the Mon itor pr ogram should b e: 756MON.
2001 Microchip T echnology Inc. DS 39024B-page 9 Using the PICDEM 17 Monitor 2.5 R esetting the PIC DEM 17 Demonstration B oard One uni que featur e of USART2 is the abil ity to r eset the P ICmicro ® MCU. This is accomplis hed by c onnectin g the DTR sig nal from P2 to the M CLR pin of the PI Cmicro MCU using the cir cuit in Fi gure 2.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 10 2001 Microchip Technology Inc. Fig u re 2. 3: Dow nlo ading … Window At the completi on of the do wnload , the Monito r status win dow will h ave display ed a E rasure Complete and Downloa d Complete messag e.
2001 Microchip T echnology Inc. DS39024B-page 11 Using the PICDEM 17 Monitor 2.9 Running Diagnostics on the PICDEM 17 Demonstration Bo ard The Moni tor firmwa re on the P IC17C75 6A provide s se veral d iagnosti c routines th at allow th e user to run pret ested co de on a per iphera l.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 12 2001 Microchip Technology Inc. • LCD – This di agnostic configu res I/O pins and writes a me ssag e to the external L CD panel in 4- bit mode.
2001 Microchip T echnology Inc. DS39024B-page 13 Using the PICDEM 17 Monitor Figure 2.5: Running Diagnostics.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 14 2001 Microchip Technology Inc. 2.10 Modifying Memory Content s The PICDE M 17 Moni tor progr am has the capability to read f rom any Data memory location or interna l/exte rnal Prog ram memo ry locati on.
2001 Microchip T echnology Inc. DS39024B-page 15 Using the PICDEM 17 Monitor Figu re 2.7 : Wri tin g D ata Me mory T o wr ite to a Data me mory lo cation, th e user m ust first sel ect the Data Memory radio button in th e Modi fy Memory window of th e Monit or progra m.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 16 2001 Microchip Technology Inc. Figure 2.8: Reading Program Memory T o r ead from a Progr am memor y location, the user must fir st sele ct the Program Memory radio butto n in the Modify M emory windo w of the Monitor program.
2001 Microchip T echnology Inc. DS39024B-page 17 Using the PICDEM 17 Monitor Figure 2.9: Writing Pr ogram Memory T o wr ite to a Progr am memor y locatio n, the user mus t first select the Program Memory radio button in th e Modi fy Memory window of th e Monit or progra m.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 18 2001 Microchip Technology Inc. NOTES:.
2001 Microchip T echnology Inc. DS39024B-page 19 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 3. Hard war e Descripti on 3.1 Introd uc tion The ha rdware on th e PICDEM 17 demon stration board is s imple an d is intende d to il lustrate the ease of use and capabiliti es of the P IC17C7X X family of devic es.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 20 2001 Microchip Technology Inc. 3.4 Push-button Switches The PICDEM 17 demo nstratio n board h as a total of n ine push-bu tton switc hes. S5 – S 12 are the eight gene ral pur pose push- button swi tch inputs that are a vailable to the us er .
2001 Microchip T echnology Inc. DS39024B-page 21 Hardware De scription 3.8 Modular Connectors As descri bed previous ly , the modular connector s can be used to set up a CAN Bus o r a I 2 C Bu s by si mply con necting standar d 4 or 6 -conduc tor phone cable.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 22 2001 Microchip Technology Inc. NOTES:.
2001 Microchip T echnology Inc. DS39024B-page 23 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 4. Using the MPLAB ® C17 C Compiler 4.1 Introd uc tion This chapter des cribe s the file s neces sary to compil e programs with the MPLAB C17 C compil er to run on the PI CDEM 17 demonstrati on board .
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 24 2001 Microchip Technology Inc. 4.3 Linker Script File Any pro gram com piled wit h the MP LAB C17 C c ompil er requir es the us e of a linker s cript file that docum ents the area s of m emory th at the linker is free to use.
2001 Microchip T echnology Inc. DS39024B-page 25 Using the MPLAB ® C17 C Compiler DATABANK PROTECTED NAME=SFR4 START=0x410 END=0x417 DATABANK PROTECTED NAME=SFR5 START=0x510 END=0x517 DATABANK PROTECTED NAME=SFR6 START=0x610 END=0x617 DATABANK PROTECTED NAME=SSR7 START=0x710 END=0x717 // 3.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 26 2001 Microchip Technology Inc. 4.4 St artup Code File The startup c ode file i s used t o call the s tartup functi on (if en abled), ini tialize data routine (if enabled ), init ialize the stack, a nd then br anch to th e main function.
2001 Microchip T echnology Inc. DS39024B-page 27 Using the MPLAB ® C17 C Compiler movlw HIGH _start movwf PCLATH movlw LOW _start movwf PCL ;******************************************************.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 28 2001 Microchip Technology Inc. 4.5 Interrupt Code File The inte rrupt code file is used to s etup the in terrupt vectors fo r the I NT pin, TMR0 Over flow , T0CKI pin, an d the Peri pheral I nterrupt ve ctor .
2001 Microchip T echnology Inc. DS39024B-page 29 Using the MPLAB ® C17 C Compiler RES 1 ;ALUSTA RES 1 ;CPUSTA ;-- Bank 3 INTSAVE_SEC3 UDATA SAVEINT_START + 0x301 RES 1 ;WREG RES 1 ;ALUSTA RES 1 ;.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 30 2001 Microchip Technology Inc. ; Branch to prolog movlw HIGH _T0CKI_prolog movwf PCLATH movlw LOW _T0CKI_prolog movwf PCL ;----.
2001 Microchip T echnology Inc. DS39024B-page 31 Using the MPLAB ® C17 C Compiler ;Save BSR and WREG movfp BSR, PCLATH clrf BSR, 1 movpf PCLATH, save_BSR ;Service the interrupt by calling the int.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 32 2001 Microchip Technology Inc. ;-----------------------------------------------------------; _PIV_prolog ;Save BSR and WREG mov.
2001 Microchip T echnology Inc. DS39024B-page 33 Using the MPLAB ® C17 C Compiler 4.6 Other Files One addi tional fi le requir ed to comp ile prog rams for th e PICDEM 1 7 demonstr ation boa rd is th e associat ed proce ssor ob ject mod ule. For the PIC17C7 56A microc ontroll er this file woul d be P17C756.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 34 2001 Microchip Technology Inc. NOTES:.
2001 Microchip T echnology Inc. DS39024B-page 35 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 5. LCD.C Description 5.1 Introd uc tion This chapter des cribes t he demo nstratio n program f or the PIC17C756A , LCD.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 36 2001 Microchip Technology Inc. 5.3 PICm icro ® C Librarie s The files in LCD.P JT use th e followin g libra y functio n(s) con tained PMC75 6L.LIB: Delay10TCY( ) Delay1KTCYx( ) 5.
2001 Microchip T echnology Inc. DS39024B-page 37 LCD.C Description 5.5 LCD.C Sourc e Code Listi ng //**************************************************** //* LCD.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 38 2001 Microchip Technology Inc. // Print the Hello message to the first line putrsXLCD(Hello); // Wait for the LCD to finish las.
2001 Microchip T echnology Inc. DS39024B-page 39 LCD.C Description 5.6 XLCD.H Source Code Listing #pragma nolist /***************************************************************** * PICmicro C Libraries V2.10 * Written and Tested using MPLABC V2.10 ****************************************************************** * Filename: xlcd.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 40 2001 Microchip Technology Inc. #define RS_PIN PORTFbits.RF7 // Port for RS #define TRIS_RS DDRFbits.RF7 // TRIS for RS #define E_PIN PORTGbits.RG1 // PORT for E #define TRIS_E DDRGbits.
2001 Microchip T echnology Inc. DS39024B-page 41 LCD.C Description // to the LCD void putrsXLCD(static const rom char *); // Writes a string of characters // in ROM to the LCD // User defines thes.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 42 2001 Microchip Technology Inc. 5.7 XLCD.C Source Code Listing #include <p17cxx.h> #include “ xlcd.h ” / ******************************************************************* * * PICmicro C Libraries V2.
2001 Microchip T echnology Inc. DS39024B-page 43 LCD.C Description while(*buffer) // Write data to LCD up to null { while(BusyXLCD()); // Wait while LCD is busy WriteDataXLCD(*buffer); // Write ch.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 44 2001 Microchip Technology Inc. { // The data bits must be either a 8-bit port or the upper or // lower 4-bits of a port.
2001 Microchip T echnology Inc. DS39024B-page 45 LCD.C Description // Setup interface to LCD #ifdef BIT8 // 8-bit interface DATA_PORT = 0b00110000; // Function set cmd(8-bit interface) #else // 4-.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 46 2001 Microchip Technology Inc. E_PIN = 1; // Clock cmd in DelayFor18TCY(); E_PIN = 0; #endif #ifdef BIT8 // 8-bit interface TRI.
2001 Microchip T echnology Inc. DS39024B-page 47 LCD.C Description { while(BusyXLCD()); #ifdef BIT8 // 8-bit interface TRIS_DATA_PORT = 0; // Data port output DATA_PORT = cmd; // Write command to .
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 48 2001 Microchip Technology Inc. / ******************************************************************* * * Function Name: SetCGRa.
2001 Microchip T echnology Inc. DS39024B-page 49 LCD.C Description #else // Lower nibble interface DATA_PORT &= 0xf0; // Write lower nib- ble DATA_PORT |= (CGaddr&0x0f); #endif DelayFor18T.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 50 2001 Microchip Technology Inc. #else // Lower nibble interface TRIS_DATA_PORT &= 0xf0; // Make port output DATA_PORT &=.
2001 Microchip T echnology Inc. DS39024B-page 51 LCD.C Description DelayFor18TCY(); #ifdef BIT8 // 8-bit interface if(DATA_PORT.7) // Read bit 7 (busy bit) { // If high E_PIN = 0; // Reset clock l.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 52 2001 Microchip Technology Inc. * must check to see if the LCD controller is * busy before calling this routine. The address * is read from the character generator RAM or * the display data RAM depending on what the * previous SetxxRamAddr routine was called.
2001 Microchip T echnology Inc. DS39024B-page 53 LCD.C Description / ******************************************************************* * * Function Name: ReadDataXLCD * Return Value: char: data byte from LCD controller * Parameters: void * Description: This routine reads a data byte from the * Hitachi HD44780 LCD controller.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 54 2001 Microchip Technology Inc. #else // Lower nibble interface data |= DATA_PORT&0x0f; // Read the lower nibble of data #en.
2001 Microchip T echnology Inc. DS39024B-page 55 LCD.C Description DelayFor18TCY(); E_PIN = 1; // Clock nibble into LCD DelayFor18TCY(); E_PIN = 0; #ifdef UPPER // Upper nibble interface DATA_PORT.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 56 2001 Microchip Technology Inc. NOTES:.
2001 Microchip T echnology Inc. DS39024B-page 57 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 6. USART.C Description 6.1 Introd uc tion This chapter des cribes t he demo nstratio n program f or the PIC17C756A , USART.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 58 2001 Microchip Technology Inc. 6.4 PICmic ro C Libra ries The file s in USA RT .PJT us e the follo wing l ibrary fun ction(s) contained PMC75 6L.LIB: Delay10KTCYx( ) BusyUSART2( ) putcUSART2( ) OpenUSART2( ) ubtoa( ) 6.
2001 Microchip T echnology Inc. DS39024B-page 59 USART.C Description 6.6 USART.C Source Code Listing //**************************************************** //* USART.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 60 2001 Microchip Technology Inc. OpenUSART2(USART_TX_INT_OFF&USART_RX_INT_OFF&USART_ASYNCH_MODE& USART_EIGHT_BIT&.
2001 Microchip T echnology Inc. DS39024B-page 61 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 7. ANALOG.C Description 7.1 Introd uc tion This chapter des cribes t he demo nstratio n program f or the PIC17C756A , ANALOG.C . This prog ram con tinuous ly conve rts on chann el 0 (whi ch is connec ted to a precisi on 4.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 62 2001 Microchip Technology Inc. 7.2 PICmic ro C Libra ries The fil es in ANA LOG .PJT us e the f ollowing library f unction( s) con tained in PMC75 6L.LIB: Delay10KTCYx( ) BusyUSART2( ) putcUSART2( ) OpenUSART2( ) OpenADC( ) ConvertADC( ) BusyADC( ) ReadADC( ) uitoa( ) 7.
2001 Microchip T echnology Inc. DS39024B-page 63 ANALOG.C Description 7.4 ANALOG.C Source Code Li sting //**************************************************** //* ANALOG.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 64 2001 Microchip Technology Inc. OpenUSART2(USART_TX_INT_OFF&USART_RX_INT_OFF&USART_ASYNCH_MODE& USART_EIGHT_BIT&.
2001 Microchip T echnology Inc. DS39024B-page 65 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 8. SWITCH.C Description 8.1 Introd uc tion This chapter des cribes t he demo nstratio n program f or the PIC17C756A , SWITCH.C . This prog ram first turns on all the me mory mappe d LEDs.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 66 2001 Microchip Technology Inc. 8.4 PICmic ro C Libra ries The files in SW ITCH.PJT us e the follo wing l ibrary fun ction(s) contained in PMC75 6L.LIB: Delay1KTCYx( ) 8.5 Source Code Descriptions DEMO756L.
2001 Microchip T echnology Inc. DS39024B-page 67 SWITCH.C Description 8.6 SWITCH.C Source Code Li sting //**************************************************** //* SWITCH.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 68 2001 Microchip Technology Inc. else // OR in desired LED LEDbuf |= Temp; // Write new value to LEDs *LEDptr = LEDbuf; } // Upda.
2001 Microchip T echnology Inc. DS39024B-page 69 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Chapter 9. I2C.C Description 9.1 Introd uc tion This chapter des cribes t he demo nstratio n program f or the PIC17C756A , I2C.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 70 2001 Microchip Technology Inc. 9.4 PICmic ro C Libra ries The files in I2C.P JT use th e followin g libra ry funct ion(s) containe d in PMC75 6L.LIB: Delay1KTCYx( ) 9.5 Source Code Descriptions DEMO756L.
2001 Microchip T echnology Inc. DS39024B-page 71 I 2 C.C Description 9.6 I2C.C Sourc e Code Listi ng //**************************************************** //* I2C.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 72 2001 Microchip Technology Inc. putcUSART2(data); // Print charac- ter to USART2 return; } void main(void) { rom int *LEDptr; un.
2001 Microchip T echnology Inc. DS39024B-page 73 I 2 C.C Description PutsUSART2(crlf); // Print a CRLF to USART2 addr++; // Increment the address if(addr > 127) // If > 127 addr = 0; // rese.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 74 2001 Microchip Technology Inc. NOTES:.
2001 Microchip Technology Inc. DS39024B-page 75 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Appe nd ix A . PICDEM 1 7 Dem onstra t ion Board S ch ematics Figure A.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 76 2001 Microchip Technology Inc. A.1 SCHEMATIC 1.
2001 Microchip Technology Inc. DS39024B-page 77 PICDEM 17 Demonstr ation Board Schematics A.2 SCHEMATIC 2.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 78 2001 Microchip Technology Inc. A.3 SCHEMATIC 3.
2001 Microchip Technology Inc. DS39024B-page 79 PICDEM 17 Demonstr ation Board Schematics A.4 SCHEMATIC 4.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 80 2001 Microchip Technology Inc. NOTES:.
2001 Microchip Technology Inc. DS39024B-page 81 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Appendix B. RS-232 Communication Pr otocol B.1 INTRODUCTION This appendix descr ibes the protocol between the PIC17C7 56A microc ontrol le r and the Host PC.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 82 2001 Microchip Technology Inc. For Dat a Memory operations: • b is the bank number • xx is the data memor y address • dd .
2001 Microchip Technology Inc. DS39024B-page 83 PICDEM ™ 17 DEMONSTR ATION BOARD USER ’ S GUIDE 12 Appendix C. Floppy Disk Contents C.1 INTRODUCTION This appendix p rovides a list ing and de scription of all fil es inclu ded on the 3.5 ” floppy disk.
PICDEM ™ 17 Demonstration Board User ’ s Gu ide DS39024B-page 84 2001 Microchip Technology Inc. NOTES:.
2001 Microchip Technology Inc. DS39024B-page 85 Floppy Disk Contents NOTES:.
Information c ontained in this publica tion regarding dev ice applicat ions and the like is i ntended through suggestion only and ma y be supers eded by update s. It i s your respo nsibilit y to en sure t hat you r app licatio n mee ts with y our sp ecifica tions.
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