单片机+BK4802N宽频率范围对讲机的制作附源程序

ID:795562 · 发表于 2021-1-3 16:30

东戳戳西戳戳，戳出一篇利用MCU控制对讲机制作的源程序，苦于无硬件连线图无法仿制。求助大神们，可否从程序上面画出硬件连线图？
附上源程序，供大家琢磨。因为这个对讲机工作频率范围很宽,好像可以工作在短波10米范围。原数据手册上写有支持19~33Mhz,并附上芯片的数据手册。
并求大神画出MCU控制的硬件连接图,和如何修改程序为工作频率段为29.6Mhz范围?

单片机源程序如下:

#include "STC8F.h"
#include "intrins.h"
#include "IICANDDELAY.h"
#include "codetab.h"
sbit set=P3^7;//must connect not more than 8.2K resistor to GND
//MCU and BK4802N share 3.3v VCC(STC8MCU must using 3.3v VCC)
//BK4802N pin19-pin22 must connect to 3.3v.
sbit ppt=P5^4;//ppt must be connected to BK4802N pin23.
sbit test=P5^5;//test(p5.5) connect a LED to GND to indict 4802n IIC RUN.
//DEFAULT FERQ:TX=RX=439.725mh.uSING "BK4802NCalc.exe to calculate.
int rxfreq[]={
0x52BE,0xF850,0x0000};
int txfreq[]={
0x52C5,0x925F,0x0000};
char txinf[]="TX...";
char rxinf[]="RX...";
char blankinf[]=" ";
char newtxfreq[6];
char newrxfreq[6];
unsigned char newtxfreqinf[6];
//char newrxfreqinf[6];
int rxreg[]={ //rx setting for register
0x0300,
0x8e04,
0xF140,
0xED00,
0x17E0,
0xe0e0,
0x8543,
0x0700,
0xA066,
0xFFFF,
0xFFE0,
0x07a0,
0x9E3C,
0x1F00,
0xD1D1,
0x200F,
0x01FF,
0xE000,
0x0340
};
int txreg[]={//tx setting for register
0x7C00,
0x0c04,
0xF140,
0xED00,
0x3fE0,
0xe0e0,
0x8543,
0x0700,
0xA066,
0xFFFF,
0xffe0,
0x061f,
0x9e3c,
0x1f00,
0xd1C1,
0x200f,
0x01FF,
0xE000,
0x0c00
};
void setchannel(char k)//setting new trx freq from EEPROM in MCU
{
int i;
for(i=0;i<6;i++)
{
newrxfreq[i]=IapRead(i+6+k*32);
newtxfreq[i]=IapRead(i+k*32);
}
}
void setchannelinf(char k)//setting new trx freq information display on OLED from EEPROM in MCU
{
int i;
for(i=0;i<6;i++)
{
newtxfreqinf[i]=IapRead(i+16+k*32);
}
}
void main()
{
unsigned char i,f;// i do for 'for',f do for store channel No.
unsigned char k=0;//k is do for trx
//Start
test=1;
Delay50ms();
OLED_Init(); //OLED初始化
for(i=0; i<8; i++)//通过点整显示汉字 -- i表示字表数组的位置
{
OLED_P16x16Ch(i*16,0,i);//In the name of the Moon ,I will punish you.
OLED_P16x16Ch(i*16,2,i+8); //Moon promise power, make up!
}
OLED_P8x16Str(0,6,"BG7QKU");
delay(10000);
OLED_CLS();//清屏
test=0;
OLED_P8x16Str(0,0,"BG7QKU");
for(i=0; i<8; i++)
{
OLED_P16x16Ch(i*16,6,i);
}
writing(0x90,23,0xa8,0XD0);//Init rx reg23.
if(P11==0)//if default or not?
{
for(i=4;i<=22;i++)
{
writing(0x90,i,HIGHBYTE(rxreg[i-4]),LOWBYTE(rxreg[i-4]));//init default reg. ro rx
}
for(i=5;i>2;i--)
{
writing(0x90,i-3,HIGHBYTE(rxfreq[i-3]),LOWBYTE(rxfreq[i-3]));//init default reg. to rx freq
}
OLED_P8x16Str(0,4,"439.725");
OLED_P8x16Str(0,2,rxinf);
}
else
{
f=IapRead(0x0200);//read store channel No.
if (f>3)
f=0;
setchannel(f);
setchannelinf(f);
OLED_P8x16Str(0,4,newtxfreqinf);
k=1;
}
test=1;
while(1)
{
if(set==1)//teat channel change key
{
Delay30ms();//kill swim
if(set==1)
{
Delay30ms();//down to LOW to set channel
if(set==0)
{
f++;
if(f>3)
f=0;
IapErase(0x0200);//erase EEPROM before write
IapProgram(0x0200,f);//write EEPORM
setchannel(f);
setchannelinf(f);
OLED_P8x16Str(0,4,newtxfreqinf);
k=1;
}
}
}
//Only using default freq
if(ppt==1&&k==0&&P11==0)//Set to TX if PTT =HIGH.
{
test=0;
Delay30ms();
if(ppt==1)
{
Delay30ms();
for(i=4;i<=22;i++)
{
writing(0x90,i,HIGHBYTE(txreg[i-4]),LOWBYTE(txreg[i-4]));
}
for(i=5;i>2;i--)
{
writing(0x90,i-3,HIGHBYTE(txfreq[i-3]),LOWBYTE(txfreq[i-3]));
}
Delay30ms();
OLED_P8x16Str(0,2,blankinf);
OLED_P8x16Str(0,2,"439.725");
test=1;
k=1;
}
}
if(ppt==0&&k==1&&P11==0)//Set to RX.
{
test=0;
Delay30ms();
if(ppt==0)
{
Delay30ms();
writing(0x90,23,0xa8,0XD0);
for(i=4;i<=22;i++)
{
writing(0x90,i,HIGHBYTE(rxreg[i-4]),LOWBYTE(rxreg[i-4]));
}
for(i=5;i>2;i--)
{
writing(0x90,i-3,HIGHBYTE(rxfreq[i-3]),LOWBYTE(rxfreq[i-3]));
}
Delay30ms();
OLED_P8x16Str(0,2,blankinf);
OLED_P8x16Str(0,2,"439.725");
test=1;
k=0;
}
}
//Using pre-set freq
if(ppt==1&&k==0&&P11==1)//Set to TX if PTT =HIGH.
{
test=0;
Delay30ms();
if(ppt==1)
{
setchannel(f);
setchannelinf(f);
test=0;
OLED_P8x16Str(0,4,newtxfreqinf);
Delay30ms();
for(i=4;i<=22;i++)
{
writing(0x90,i,HIGHBYTE(txreg[i-4]),LOWBYTE(txreg[i-4]));
}
for(i=5;i>2;i--)
{
writing(0x90,i-3,newtxfreq[2*(i-3)],newtxfreq[2*(i-3)+1]);
}
Delay30ms();
OLED_P8x16Str(0,2,blankinf);
OLED_P8x16Str(0,2,txinf);
test=1;
k=1;
}
}
if(ppt==0&&k==1&&P11==1)//Set to RX.
{
Delay30ms();
if(ppt==0)
{
test=0;
Delay30ms();
writing(0x90,23,0xa8,0XD0);
for(i=4;i<=22;i++)
{
writing(0x90,i,HIGHBYTE(rxreg[i-4]),LOWBYTE(rxreg[i-4]));
}
for(i=5;i>2;i--)
{
writing(0x90,i-3,newrxfreq[2*(i-3)],newrxfreq[2*(i-3)+1]);
}
Delay30ms();
OLED_P8x16Str(0,2,blankinf);
OLED_P8x16Str(0,2,rxinf);
test=1;
k=0;
}
}
}
}