void rf12_rxdata(uint8_t *data, uint8_t number) {
rf12_trans(0x82D9); // RX on
for (uint8_t i = 0; i < number; i++) {
rf12_ready();
*data++ = rf12_trans(0xB000);
}
rf12_trans(0x8201); // RX off
}
void rf12_rxdata(unsigned char *data, unsigned char number)
{
unsigned char i;
rf12_trans(0x82C8); // RX on
rf12_trans(0xCA81); // set FIFO mode
rf12_trans(0xCA83); // enable FIFO
for (i = 0; i < number; i++)
{
*data++ = rf12_readytrans(0xB000);
}
rf12_trans(0x8208); // RX off
}
void rf12_setfreq(unsigned short freq)
{
if (freq < 96) // 430,2400MHz
freq = 96;
else if (freq > 3903) // 439,7575MHz
freq = 3903;
rf12_trans(0xA000 | freq);
}
void rf12_setbaud(unsigned short baud)
{
// if (baud < 663)
// return;
// if (baud < 5400) // Baudrate= 344827,58621/(R+1)/(1+CS*7)
rf12_trans(0xC680 | ((43104 / baud) - 1));
// else
// rf12_trans(0xC600 | ((344828UL / baud) - 1));
}
void send() {
char buf[16];// = "g123456789012345678901234567890\0\0\0";
buf[0] = 'g';
memcpy(buf + 1, &x, 2);
memcpy(buf + 3, &y, 2);
memcpy(buf + 5, &z, 2);
buf[7] = 0;
memcpy(buf + 8, &x, 2);
memcpy(buf + 10, &y, 2);
memcpy(buf + 12, &z, 2);
buf[14] = 0;
rf12_init();
rf12_setall(RF12FREQ868(868.3), 4, 1, 4, 666, 0, 6);
rf12_txdata(buf, 15);
rf12_trans(0x8201);
rf12_trans(0x0);
}
void rf12_setall(unsigned short freq, unsigned char bandwidth, unsigned char gain, unsigned char drssi, unsigned short baud, unsigned char power, unsigned char mod)
{
if (freq < 96) // 430,2400MHz
freq = 96;
else if (freq > 3903) // 439,7575MHz
freq = 3903;
rf12_trans(0xA000 | freq);
rf12_trans(0x9400 | ((bandwidth & 7) << 5) | ((gain & 3) << 3)
| (drssi & 7));
// if (baud < 663)
// return;
// if (baud < 5400) // Baudrate= 344827,58621/(R+1)/(1+CS*7)
rf12_trans(0xC680 | ((43104 / baud) - 1));
// else
// rf12_trans(0xC600 | ((344828UL / baud) - 1));
rf12_trans(0x9800 | (power & 7) | ((mod & 15) << 4));
}
void rf12_init(void)
{
rf12_trans(0xC0E0); // AVR CLK: 10MHz
rf12_trans(0x80E7); // Enable FIFO
rf12_trans(0xC2AB); // Data Filter: internal
rf12_trans(0xCA81); // Set FIFO mode
rf12_trans(0xE000); // disable wakeuptimer
rf12_trans(0xC800); // disable low duty cycle
rf12_trans(0xC4F7); // AFC settings: autotuning: -10kHz...+7,5kHz
}
void rf12_txdata(uint8_t node_id, uint8_t *data, uint8_t number) {
rf12_trans(0x8239); // TX on
rf12_ready();
rf12_trans(0xB8AA);
rf12_ready();
rf12_trans(0xB8AA);
rf12_ready();
rf12_trans(0xB8AA);
rf12_ready();
rf12_trans(0xB82D);
rf12_ready();
rf12_trans(0xB800 | node_id);
for (uint8_t i = 0; i < number; i++) {
rf12_ready();
rf12_trans(0xB800 | (*data++));
}
rf12_ready();
rf12_trans(0xB8AA);
rf12_ready();
rf12_trans(0x8201); // TX off
rf12_ready();
rf12_trans(0xB8AA);
}
void rf12_txdata_start()
{
rf12_trans(0x0000);
rf12_readytrans(0x8238); // TX on
rf12_readytrans(0x0000);
for(int xc = 0;xc<5;xc++)
{
rf12_readytrans(0xB8AA);
}
rf12_readytrans(0xB82D);
rf12_readytrans(0xB8D4);
rf12_readytrans(0x0000);
}
void rf12_init(uint8_t node_id) {
DDRB |= _BV(PIN_SDO) | _BV(PIN_SCK) | _BV(PIN_SEL);
PORTB |= _BV(PIN_SEL);
PORTD |= _BV(PIN_IRQ);
rf12_trans(0x0000);
rf12_trans(0x8201);
rf12_trans(0xB800);
while (bit_is_clear(PIND, PIN_IRQ)) {
rf12_trans(0x0000);
}
rf12_trans(0x80E7); // enable TX register, enable RX FIFO buffer, 868MHz, 12.0pF
rf12_trans(0xA460); // 868.000MHz
rf12_trans(0xC606); // 49.26kbps
rf12_trans(0x94A2); // VDI,FAST,134kHz,0dBm,-91dBm
rf12_trans(0xC2AC); // AL,!ml,DIG,DQD4
rf12_trans(0xCA83); // FIFO8,SYNC,!ff,DR
rf12_trans(0xCE00 | node_id); // SYNC=2DD4
rf12_trans(0xC483); // @PWR,NO RSTRIC,!st,!fi,OE,EN
rf12_trans(0x9850); // !mp,90kHz,MAX OUT
rf12_trans(0xCC77); // OB1，OB0, LPX,！ddy，DDIT，BW0
rf12_trans(0xE000); // NOT USE
rf12_trans(0xC800); // NOT USE
rf12_trans(0xC049); // 1.66MHz,3.1V
}
static void rf12_ready(void) {
loop_until_bit_is_clear(PIND, PIN_IRQ);
rf12_trans(0x0000);
}
unsigned short noinline rf12_readytrans(unsigned short wert)
{
rf12_ready();
return rf12_trans(wert);
}
void rf12_setpower(unsigned char power, unsigned char mod)
{
rf12_trans(0x9800 | (power & 7) | ((mod & 15) << 4));
}
void rf12_setbandwidth(unsigned char bandwidth, unsigned char gain, unsigned char drssi)
{
rf12_trans(0x9400 | ((bandwidth & 7) << 5) | ((gain & 3) << 3)
| (drssi & 7));
}
