// preamble -> FORMATTED -> unit id -> dest id -> data -> csum -> close...
// copied from transmitter code
void rf_xmit_packet(int8 data)
{
int8 i;
int8 outbytes[8];
int16 crc;
outbytes[0] = START_ID;
outbytes[1] = TX_ID;
outbytes[2] = UNIT_ID;
outbytes[3] = RX_ID;
outbytes[4] = dest_id;
outbytes[5] = data;
crc = _CRC16_(outbytes, 6);
outbytes[6] = make8(crc,0);
outbytes[7] = make8(crc,1);
WriteCMD(0x8228); // OPEN PA
delay_us(4);
WriteCMD(0x8238);
delay_us(1);
WriteFSKbyte(0xAA); // PREAMBLE
WriteFSKbyte(0xAA);
WriteFSKbyte(0xAA);
WriteFSKbyte(0x2D); // SYNCHRO PATTERN 0x2DD4
WriteFSKbyte(0xD4);
for (i=0; i<8; i++)
WriteFSKbyte(outbytes[i]);
WriteFSKbyte(0xAA);
WriteFSKbyte(0xAA);
WriteFSKbyte(0xAA);
WriteCMD(0x8208); // CLOSE PA
}
void rf_SendByte(uchar data)
{
uchar cmd = 0xB800 | data;
WaitReady();//while(RFM12_IRQ==1);
WriteCMD(cmd);
}
void WriteFSKbyte(int8 DATA)
{
int8 RGIT = 0;
int16 temp = 0xB800;
output_float(_SDO);
output_low(_SCK);
temp|= DATA;
Loop: SCK = false;
RF_EN = false;
output_low(_SDA);
SCK = true;
RGIT = (SDO==true); //Polling SDO
SCK = false;
output_high(_SDA);
RF_EN = true;
if (RGIT==0){
goto Loop;
} else {
RGIT=false;
WriteCMD(temp);
}
}
/****************************************************************************
* Настройка
*
****************************************************************************/
void CursorOrDisplayShift(unsigned char SC,unsigned char RL)
{
unsigned char temp=16;
if(SC)
{temp|=(1<<3);}
if(RL)
{temp|=(1<<2);}
WriteCMD(temp, 0);
}
/****************************************************************************
* Настройка
*
****************************************************************************/
void EntryModeSet(unsigned char ID,unsigned char SH)
{
unsigned char temp=4;
if(ID)
{temp|=(1<<1);}
if(SH)
{temp|=(1<<0);}
WriteCMD(temp, 0);
}
/****************************************************************************
* Настройка
*
****************************************************************************/
void DisplayONOFControlBit(unsigned char D,unsigned char C,unsigned char B)
{
unsigned char temp=8;
if(D)
{temp|=(1<<2);}
if(C)
{temp|=(1<<1);}
if(B)
{temp|=(1<<0);}
WriteCMD(temp, 0);
}
/****************************************************************************
*
* Настройка
*
****************************************************************************/
void FunctionSet(unsigned char DL,unsigned char N,unsigned char F)
{
unsigned char temp=32;
if(DL)
{
temp|=(1<<4);
}
if(N)
{
temp|=(1<<3);
}
if(F)
{
temp|=(1<<2);
}
WriteCMD(temp, 0);
}
void init(void)
{
//osccon = 0x70; // 8Mhz internal OSC
cmcon = 0x07;
//ansel = 0; // all is digital i/o on PortA
option_reg.NOT_RBPU = 0; // enable pullup resistors on PB
option_reg.INTEDG = 0; // falling edge interrupt
CONF_LED1_OUT();
LED1=0;
// setup SPI
// outputs
RFM12_CS_OUT(); // Module Chip Select
HI_SEL(); // RF CS is Active Low so set High
SCK_OUT(); // SPI SCK as Output
LOW_SCK();
SDO_OUT(); // SPI SDO as Output
LOW_SDO();
// inputs
RFM12_nIRQ_IN(); // nIRQ
SDI_IN(); // SPI SDI
delay_ms(500); // Wait for RFM12 POR
WriteCMD(0x80F7); // 915 EL, EF, 12.0pf
WriteCMD(0xA7D0); // 915=A7D0 904.50MHZ = A258
WriteCMD(0xC623); // c608=38400 c611=19200 c623= 9600bps
WriteCMD(0xC22C); // Data Filter: AL, !ML, digital filter, 4 dqd
WriteCMD(0xC4F7); // AFC Autotune, -10khz..+7.5Khz, !st, !fi, OE, EN
WriteCMD(0x96A0); // P16, VDI, FAST, 65khz, 0dBm, -103dBm
WriteCMD(0xCA81); // FIFO8, SYNC, !ff, DR
//TX Config
//WriteCMD(0x9850); // !mp, 9810=30Khz, MAX out
WriteCMD(0xE000); // NOT USE
WriteCMD(0xC80E); // NOT USE
WriteCMD(0xC000); // CLK 1mhz, 2.2v
WriteCMD(0x8280); // ER, EBB, !ET, ES, EX, !EB, !EW, !DC
}
void Init_RF12()
{
RF_EN = true;
output_high(_SDA);
output_low(_SCK);
WriteCMD(0x80D8); //enable register,433MHz,12.5pF
WriteCMD(0x8208); //Turn on crystal,!PA
WriteCMD(0xA640); //
WriteCMD(0xC647); //
WriteCMD(0XCC77); //
WriteCMD(0x94A0); //VDI,FAST,134kHz,0dBm,-103dBm
WriteCMD(0xC2AC);
WriteCMD(0xCA80);
WriteCMD(0xCA83); //FIFO8,SYNC,
WriteCMD(0xC49B);
WriteCMD(0x9850); //!mp,9810=30kHz,MAX OUT
WriteCMD(0xE000); //NOT USE
WriteCMD(0xC80E); //NOT USE
WriteCMD(0xC000); //1.0MHz,2.2V
}
void Init_RF12RX()
{
RF_EN = true;
output_high(_SDA);
output_low(_SCK);
WriteCMD(0x80D8); //enable register,433MHz,12.5pF
WriteCMD(0x82D8); //enable receive,!PA
WriteCMD(0xA640); //
WriteCMD(0xC647); //
WriteCMD(0x94A0); //VDI,FAST,134kHz,0dBm,-103dBm
WriteCMD(0xC2AC);
WriteCMD(0XCC77); //
WriteCMD(0xCA80);
WriteCMD(0xCA83); //FIFO8,SYNC,
WriteCMD(0xC49B);
WriteCMD(0x9850); //!mp,9810=30kHz,MAX OUT
WriteCMD(0xE000); //NOT USE
WriteCMD(0xC800); //NOT USE
WriteCMD(0xC000); //1.0MHz,2.2V
WriteCMD(0xCA80);
WriteCMD(0xCA83); // reset FIFO and read to receive next Byte
RF12_RDFIFO();
}
uchar ReadFifo(void)
{
WaitReady();
return (WriteCMD(0xB000) & 0xFF);
}
/****************************************************************************
*
* Дапишем данные в RAM
*
****************************************************************************/
void WriteDataToRam(unsigned char Data)
{
WriteCMD(Data, 1);
}
/****************************************************************************
*
* Установить указатель DDRAM
*
****************************************************************************/
void SetDDRAMAddress(unsigned char AC)
{
unsigned char temp=128;
temp|=AC;
WriteCMD(temp, 0);
}
/****************************************************************************
*
* Установить указатель CGRAM
*
****************************************************************************/
void SetCGRAMAddress(unsigned char AC)
{
unsigned char temp=64;
temp|=AC;
WriteCMD(temp, 0);
}
void main()
{
uchar i=0, j=0;
uint chksum=0;
uchar buffer[17];
uchar temp=0;
init();
LED1 = 1; // Blink LED twice - slave
delay_ms(500);
LED1 = 0;
delay_ms(500);
LED1 = 1; // Blink LED twice - slave
delay_ms(500);
LED1 = 0;
WriteCMD(0xCA81);
WriteCMD(0xCA83); // Enable FIFO
while(1)
{
while(RFM12_IRQ==0)
{
temp= ReadFifo(); // read in next Rx byte
buffer[i++] = temp;
if(temp!=0){
for(t=0;t<4;t++){
LED1=1; // turn on led
delay_ms(25);
LED1=0; // turn on led
delay_ms(25);
}
}
if (i==17) // received data + checksum = 17 bytes
{
i=0;
WriteCMD(0xCA81); // disable FIFO
chksum=0;
for(j=0 ; j<16 ; j++) // calc checksum
chksum+=buffer[j];
chksum&=0x0FF;
if(chksum==buffer[16]&&buffer[16]!=0) // if checksum ok
{
for(t=0;t<4;t++){
LED1=1; // turn on led
delay_ms(25);
LED1=0; // turn on led
delay_ms(25);
}
}
/// LED1=0;
WriteCMD(0xCA81); // disable FIFO
WriteCMD(0xCA83); // enable FIFO, re-Sync
}//if
}//while
} //while
}
/****************************************************************************
* Вернуть указатель в начало DDRAM
*
****************************************************************************/
void ReturnHome(void)
{
WriteCMD(2, 0);
}
/****************************************************************************
* Очистить дисплей
*
****************************************************************************/
void ClearDisplay(void)
{
WriteCMD(1, 0);
}
