| 0,0 → 1,242 |
|---|
| /********************************************* |
| * |
| * draft version v 0.1, experimental |
| * |
| * code based on the code of "benedikt k." |
| * this was an avr project from the site: http://www.mikrocontroller.net/topic/65984#541030 |
| * |
| * |
| * code should be matched with RF01 |
| * |
| * up to now no transmission between the RF12 modules and Jeelabs.com RF12 lib |
| * |
| * this code has worked: transmitting using atmega168 and atmega328 in combination with RF01s and RF02s |
| * |
| * arduino 18 |
| * |
| * five march, contrechoc.com, 2010, june |
| * |
| * |
| *********************************************/ |
| |
| |
| #include <avr/io.h> |
| #include <avr/interrupt.h> |
| #include <stdlib.h> |
| #include <avr/pgmspace.h> |
| #include <avr/eeprom.h> |
| |
| #include <string.h> |
| |
| #include "rf02.h" |
| #include <util/delay.h> |
| |
| #define F_CPU 16000000UL |
| |
| #define RF_PORT PORTB |
| #define RF_DDR DDRB |
| #define RF_PIN PINB |
| |
| #define LED_PORT PORTD |
| #define LED_DDR DDRD |
| #define LED_PIN PIND |
| |
| #define LED0 4 -- PD4 |
| #define LED1 2 -- PD2 |
| |
| #define SDI 0 // SDI, -> RF02 Atmega PB0 Arduino 8 |
| #define SCK 1 // SCK, -> RF02 Atmega PB1 Arduino 9 |
| #define CS 2 // nSEL, -> RF02 Atmega PB2 Arduino 10 |
| #define IRQ 4 // nIRQ, <- RF02 Atmega PB4 Arduino 12 |
| //------------------// FSK: Pullupto VCC |
| |
| #ifndef cbi |
| #define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) |
| #endif |
| #ifndef sbi |
| #define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit)) |
| #endif |
| |
| #ifndef cLED0 |
| #define cLED0() (LED_PORT &= ~(1<<LED0)) |
| #endif |
| #ifndef sLED0 |
| #define sLED0() (LED_PORT |= (1<<LED0) ) |
| #endif |
| |
| #ifndef cLED1 |
| #define cLED1() (LED_PORT &= ~(1<<LED1)) |
| #endif |
| #ifndef sLED1 |
| #define sLED1() (LED_PORT |= (1<<LED1) ) |
| #endif |
| |
| |
| |
| unsigned char test[32]=" 55555 \n"; |
| |
| void rf02_changeText( unsigned char* ptr, uint8_t number){ |
| |
| if (number> 32)number = 32; |
| memcpy( test, ptr, number); |
| |
| } |
| |
| void rf02_prepAll434(){ |
| |
| rf02_init(); // ein paar Register setzen (z.B. CLK auf 10MHz) |
| rf02_setfreq(RF02FREQ(434)); // 433,92MHz |
| rf02_setpower(1); // -12dBm Ausgangangsleistung |
| rf02_setmodfreq(3); // 120kHz Frequenzshift |
| rf02_setbaud(19200); // 19200 Baud |
| |
| }// |
| |
| void rf02_prepAll(unsigned short freq, uint8_t setPower,uint8_t modFreq,unsigned short baudRate){ |
| |
| rf02_init(); // ein paar Register setzen (z.B. CLK auf 10MHz) |
| rf02_setfreq( RF02FREQ(freq) ); // Sende/Empfangsfrequenz auf 433,92MHz einstellen |
| |
| if ( setPower < 0 ) setPower = 0; |
| if ( setPower > 4 ) setPower = 4; |
| rf02_setpower(setPower); // -12dBm Ausgangangsleistung |
| |
| if ( modFreq < 0 ) modFreq = 0; |
| if ( modFreq > 8 ) modFreq = 8; |
| rf02_setmodfreq(modFreq); // 120kHz Frequenzshift |
| |
| rf02_setbaud(baudRate); // 19200 Baud |
| |
| }// |
| |
| |
| void rf02_sendData(){ |
| |
| rf02_txdata( test, sizeof test); |
| } |
| |
| |
| |
| void rf02_trans(unsigned short value) |
| { uint8_t i; |
| |
| cbi(RF_PORT, CS); |
| |
| for (i=0; i<16; i++) |
| { if (value&0x8000) //0x8000 |
| sbi(RF_PORT, SDI); |
| else |
| cbi(RF_PORT, SDI); |
| |
| sbi(RF_PORT, SCK); |
| value<<=1; |
| _delay_us(0.3); |
| cbi(RF_PORT, SCK); |
| } |
| sbi(RF_PORT, CS); |
| } |
| |
| |
| |
| void rf02_init(void) |
| { |
| RF_PORT=(1<<CS); |
| RF_DDR=(1<<SDI)|(1<<SCK)|(1<<CS); |
| |
| for (unsigned char i=0; i<15; i++) |
| _delay_ms(10); // wait until POR done |
| rf02_trans(0xC0E0); // power settings |
| rf02_trans(0x8A75);// fsk in rfm02 = afc in rf12 |
| // rf02_trans(0x80C7); |
| rf02_trans(0xC2A0); // enable tx sync bit, disable low bat detector |
| |
| //LED_DDR= 0xFF; |
| } |
| |
| void rf02_setmodfreq(uint8_t bandwidth) |
| { |
| rf02_trans(0x8F80|(bandwidth&7)); |
| //rf02_trans(0x8F70); |
| } |
| |
| void rf02_setfreq(unsigned short freq) |
| { if (freq<96) // 430,2400MHz |
| freq=96; |
| else if (freq>3903) // 439,7575MHz |
| freq=3903; |
| rf02_trans(0xA000|freq); |
| |
| //rf02_trans(0xA640); //= 434 MHz |
| } |
| |
| void rf02_setpower(uint8_t power) |
| { |
| rf02_trans(0xB000|((power&7)<<8)); |
| } |
| |
| void rf02_setbaud(unsigned short baud) |
| { |
| |
| if (baud<1345) |
| baud=1345; |
| if (baud<19000) |
| rf02_trans(0xD240); // 25% PLL current |
| else if (baud<37000) |
| rf02_trans(0xD2C0); // 33% PLL current |
| else |
| rf02_trans(0xD200); // 50% PLL current |
| |
| //rf02_trans(0xC800|((344828UL/baud)-1)); // Baudrate= 344827,59/(R+1) |
| |
| rf02_trans(0xC806); |
| } |
| |
| void rf02_txdata( unsigned char * data, uint8_t number) |
| { |
| uint8_t i,value; |
| value=0xC6; //1100 0110 |
| cbi(RF_PORT, CS); //nSel |
| |
| for (i=0; i<8; i++) |
| { if (value&0x80) //1000 0000 = 80 |
| sbi(RF_PORT, SDI); |
| else |
| cbi(RF_PORT, SDI); |
| |
| sbi(RF_PORT, SCK); |
| value<<=1; |
| _delay_us(0.2); |
| cbi(RF_PORT, SCK); |
| } |
| |
| rf02_shiftout(0xAA);//10101010 |
| rf02_shiftout(0xAA); |
| rf02_shiftout(0xAA); |
| rf02_shiftout(0x2D);//00101101 |
| rf02_shiftout(0xD4);//11010100 |
| |
| // no checkbit, in experimenting some letters were transmitted wrong! |
| |
| for (i=0; i<number; i++) |
| rf02_shiftout(*data++); |
| |
| sbi(RF_PORT, CS); |
| while(RF_PIN&(1<<IRQ)); // wait until transfer done |
| rf02_trans(0xC464); // TX off after 10us |
| |
| } |
| |
| void rf02_shiftout(unsigned char value) |
| { uint8_t j; |
| for (j=0; j<8; j++) |
| { while(RF_PIN&(1<<IRQ)); |
| while(!(RF_PIN&(1<<IRQ))); |
| |
| if (value&128) //100101000 |
| sbi(RF_PORT, SDI); |
| else |
| cbi(RF_PORT, SDI); |
| value<<=1; |
| } |
| } |
| |