无线胶囊内窥镜系统设计 第15页

for(i=0;ov_reg[i].need != 0xff;i++)
{
   if(ov_reg[i].need == 1)
   {
    temp = TWI_poll( TWI_CHIP_OV7660|TWI_WRITE, (ov_reg[i].addr), &(ov_reg[i].data) );
    if( temp )
    {
     return temp;
    }
   }
}

txnum=0;
for(i=0;ov_reg[i].need != 0xff;i++)
{
   if(ov_reg[i].need == 1)
   {
    temp = TWI_poll( TWI_CHIP_OV7660|TWI_READ, (ov_reg[i].addr), &(txPacket[txnum++]) );
    if( temp )
    {
     return temp;
    }
   }
}
// uartDebug_txPacket(txPacket,txnum);
my_delay_ms(200);

return 0x00; //ok
}
 /* OV7660_init() */
附录八、NRF24LE1芯片main.c部分
Main.c 文件：

#include <Nordic\reg24le1.h>
#include "hal_nrf_reg.h"
#include "hal_nrf.h"
#include "radio.h"

#include "application.h"

uint8_t xdata packet[RADIO_MAX_PL];     // Buffer for sending or receiving
char combuf[240];
char *p=&combuf[240];

void send_packet(uint8_t command)
{
  bool packet_sent;
  uint8_t data_length;

  packet[0] = CMD_SEND_DATA;            // Add TYPE (data = 0x00)
  packet[1] = data_length = 1;          // Add LENGTH (1 byte)
  packet[DATA_POS] = command;           // Add DATA to send

  radio_send_packet(packet, data_length+DATA_POS);

  while(radio_busy())
    ;

  packet_sent = radio_packet_sent();

  if(packet_sent)
  {
 //   LED1_BLINK();                       // Packet sent, flash LED1
  }
  else
  {
 //   LED0_BLINK();                       // Packet lost, flash LED0
  }
}

uint8_t read_packet(void)
{
  uint8_t command, data_length,type, pck_length;

  /* Get the packet from radio */
  pck_length = radio_read_data(packet);

  /* Disassemble packet */
  type        =  packet[0];             // Get TYPE of message
  data_length =  packet[1];             // Get LENGTH of data part

  /* .... Room for decryption of message .... */

  command = packet[DATA_POS];           // Get the received command
  return command;
}

void radio_irq(void) interrupt RF_READY_INT_VECT 
{
  radio_interrupt(); 
}

void get_AD()
{
   p=data_ov7660;
}

void main(void){
  uint8_t command;
  uint8_t ctr;

  P0 = 0;      
  P0DIR = 0x0C;   
                                                  
  RFCKEN = 1;  
  RF = 1;          // enable RF interrupt 
  EA = 1;           // Global interrupt enable
           
    radio_init(1);                           
    while(true) 
 {
      while(radio_busy());
  if(VSYNC=0)
  {
   if(HREF=1)
   {
    if(PCLK=1)
    {
     get_AD();
    }
    else
    p++;  // ++ 指针
   }
   else
    {
     send_packet(combuf[240]);
     while(HREF=0);
    }
  }
  else
  send_packet(CMD1);
   }
}
application.h 文件：

#define CMD_SEND_DAT

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