// SLAVE
#include <16F88.h>
#device adc=8

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC_IO                 //Internal RC Osc, no CLKOUT
#FUSES PUT                      //Power Up Timer
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES BROWNOUT                 //Reset when brownout detected
#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
#FUSES NODEBUG                  //No Debug mode for ICD
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOFCMEN                  //Fail-safe clock monitor disabled
#FUSES NOIESO                   //Internal External Switch Over mode disabled

#use delay(clock=8000000)
#use i2c(Slave,Slow,sda=PIN_B1,scl=PIN_B4,address=0x32)

#define PCM PIN_A0
unsigned int16 tUp=1000;

#int_SSP
void  SSP_isr(void)
{
   if(i2c_poll())
   {
      unsigned int8 incoming;
      incoming = i2c_read();
      tUp=(4*(unsigned int16)incoming)+1000;
   }
}

void main()
{

   setup_adc_ports(NO_ANALOGS|VSS_VDD);
   setup_adc(ADC_CLOCK_DIV_2);
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DIV_BY_16,255,1);
   setup_ccp1(CCP_OFF);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
   enable_interrupts(INT_SSP);
   enable_interrupts(GLOBAL);
   setup_oscillator(OSC_8MHZ|OSC_INTRC);

   set_tris_a(0x00);
   set_tris_b(0x00);
   output_a(0x00);
   output_b(0x00);
   
   while(1)
   {
      output_high(PCM);
      delay_us(tUp);
      output_low(PCM);
      delay_ms(20);
   }

}

// MASTER
#include <16F88.h>
#device adc=8

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC_IO                 //Internal RC Osc, no CLKOUT
#FUSES PUT                      //Power Up Timer
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES BROWNOUT                 //Reset when brownout detected
#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
#FUSES NODEBUG                  //No Debug mode for ICD
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOFCMEN                  //Fail-safe clock monitor disabled
#FUSES NOIESO                   //Internal External Switch Over mode disabled

#use delay(clock=8000000)
#use i2c(Master,Slow,sda=PIN_B1,scl=PIN_B4)

void main()
{

   setup_adc_ports(NO_ANALOGS|VSS_VDD);
   setup_adc(ADC_CLOCK_DIV_2);
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DISABLED,0,1);
   setup_ccp1(CCP_OFF);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
   setup_oscillator(OSC_8MHZ|OSC_INTRC);
   
   delay_ms(5000);
   i2c_start();
   i2c_write(0x32); // Address
   i2c_write(56); // 56 Value To Send To ESC Via PCM (tUp=(4*56)+1000=1224uS)
   i2c_stop();
   
}