EX_INTEE.C
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/////////////////////////////////////////////////////////////////////////
//// EX_INTEE.C ////
//// ////
//// This program will read and write to the '83 or '84 internal ////
//// EEPROM. ////
//// ////
//// Configure the CCS prototype card as described below. ////
//// ////
//// This example will work with the PCM and PCH compilers. The ////
//// following conditional compilation lines are used to include a ////
//// valid device for each compiler. Change the device, clock and ////
//// RS232 pins for your hardware if needed. ////
/////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2001 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS ////
//// C compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, ////
//// reproduction or distribution is permitted without written ////
//// permission. Derivative programs created using this software ////
//// in object code form are not restricted in any way. ////
/////////////////////////////////////////////////////////////////////////
#if defined(__PCM__)
#include <16F877.h>
#fuses HS,NOPROTECT,NOLVP,NOWDT
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7) // Jumpers: 8 to 11, 7 to 12
#elif defined(__PCH__)
#include <18F452.h>
#fuses HS,NOPROTECT,NOLVP,NOWDT
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7) // Jumpers: 8 to 11, 7 to 12
#endif
#include
// The following initializes the first 4 locations of the data EERPOM
// using the #ROM directive
#IF defined (__PCM__)
#rom 0x2100={1,2,3,4}
#elif defined(__PCH__)
#rom int 0xf00000={1,2,3,4}
#endif
main() {
byte i,j,address,value;
do {
printf("\r\n\nEEPROM:\r\n"); // Display contents of the first 64
for(i=0; i<=3; ++i) { // bytes of the data EEPROM in hex
for(j=0; j<=15; ++j) {
printf( "%2x ", read_eeprom( i*16+j ) );
}
printf("\n\r");
}
printf("\r\nLocation to change: ");
address = gethex();
printf("\r\nNew value: ");
value = gethex();
write_eeprom( address, value );
} while (TRUE);
}
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