Memória Externa RS232 Long e Float com PIC 16F877A

Código feito no CCS C Compiler

#include <16F877A.h>

#device adc = 8

#FUSES NOWDT //No Watch Dog Timer

#FUSES XT //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)

#FUSES NOPUT //No Power Up Timer

#FUSES NOPROTECT //Code not protected from reading

#FUSES NODEBUG //No Debug mode for ICD

#FUSES NOBROWNOUT //No brownout reset

#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O

#FUSES NOCPD //No EE protection

#FUSES NOWRT //Program memory not write protected

#use delay(clock = 20MHz)

#ifndef lcd_enable

 #define lcd_enable pin_E1 // pino enable do LCD

 #define lcd_rs pin_E2 // pino rs do LCD

 //#define lcd_rw pin_e2 // pino rw do LCD

 #define lcd_d4 pin_d4 // pino de dados d4 do LCD

 #define lcd_d5 pin_d5 // pino de dados d5 do LCD

 #define lcd_d6 pin_d6 // pino de dados d6 do LCD

 #define lcd_d7 pin_d7 // pino de dados d7 do LCD

#endif

#include "mod_lcd.c"

#include "2404.C"

   long int End_HL(byte H, byte L){

   return (H<<8)+ L;

}

char* IntToHex(int value) {

   int a;

   int b;

   char* buffer;

   a = value && 16;

   b = (value>>4)&16;

   buffer[0] = (a<10)?'0'+a:'A'-(a-10);

   buffer[1] = (b<10)?'0'+b:'A'-(b-10);

   return buffer;

}

WRITE_FLOAT_EXT_EEPROM(long int n, float data) {

   int i;

   for (i = 0; i < 4; i++)

      write_ext_eeprom(i + n, *((int8*)&data + i) ) ;

}

float READ_FLOAT_EXT_EEPROM(long int n) {

   int i;

   float data;

   for (i = 0; i < 4; i++)

      *((int8*)&data + i) = read_ext_eeprom(i + n);

      return(data);

}

void eeprom_int16(unsigned int endereco, int16 valor_i16){

   write_ext_eeprom(endereco, make8(valor_i16,0));

   write_ext_eeprom(endereco+1, make8(valor_i16,1));

}

int16 read_int16_ext_eeprom(long int endereco) {

   int a, b;

   int16 valor;

   a = read_ext_eeprom(endereco);

   b = read_ext_eeprom(endereco + 1);

   valor = make16(b, a);

   return valor;

}

void main() {

   byte dispositivo1,dispositivo2;

   unsigned int8 a,b,c,d;

   unsigned int endereco;

   int16 Temperatura;

   float pressao = 21.37f;

   float result_f;

   setup_adc_ports(NO_ANALOGS);

   setup_adc(ADC_OFF);

   setup_psp(PSP_DISABLED);

   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);

   setup_timer_1(T1_DISABLED);

   setup_timer_2(T2_DISABLED,0,1);

   setup_comparator(NC_NC_NC_NC);

   setup_vref(FALSE);

   lcd_ini(); // Inicializa LCD

   delay_ms(10);

   init_ext_eeprom();

   delay_ms(10);

   printf (lcd_escreve,"\f iniciando...");

   delay_ms(2000);

   while (true){

      write_ext_eeprom(0x1, 6);

      write_ext_eeprom(0x2, 9);

      write_ext_eeprom(3, 12);

      write_ext_eeprom(4, 40);

      write_ext_eeprom(5, 50);

      write_ext_eeprom(6, 60);

      write_ext_eeprom(7, 70);

      Temperatura = 730;

      endereco = 8;

      eeprom_int16(endereco,Temperatura);

      endereco = 10;

      WRITE_FLOAT_EXT_EEPROM(endereco,pressao);

      printf(lcd_escreve,"\fValor: %d",read_ext_eeprom(0x2 ));

      printf(lcd_escreve,"\r\nValor: %d",read_ext_eeprom(4));

      delay_ms(3000);

      //a = read_ext_eeprom(8);  

      //b = read_ext_eeprom(9);

      //printf(lcd_escreve,"\fTemp.: %lu",make16(b,a));

      printf(lcd_escreve,"\fTemp.: %lu", read_int16_ext_eeprom(8));

      delay_ms(3000);

   

      result_f = READ_FLOAT_EXT_EEPROM(10);

      printf(lcd_escreve,"\fPressao: %.1f", result_f);

      delay_ms(3000);

   }

}

Software: PicsimLab