| 0,0 → 1,220 |
|---|
| /********************************************* |
| * |
| * 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, june 2010 , october 2010 |
| * |
| * |
| *********************************************/ |
| |
| #include <avr/io.h> |
| #include <avr/interrupt.h> |
| #include <avr/pgmspace.h> |
| #include <avr/eeprom.h> |
| #include <stdlib.h> |
| |
| #include "rf01.h" |
| |
| #define F_CPU 16000000UL |
| #include <util/delay.h> |
| |
| #define RF_PORT PORTB |
| #define RF_DDR DDRB |
| #define RF_PIN PINB |
| |
| #define SDI 5 // RF01 SDI, arduino 13 cannot be changed |
| #define SCK 4 // RF01 SCK, arduino 12 cannot be changed |
| #define CS 3 // RF01 nSEL, arduino 11 cannot be changed |
| #define SDO 2 // RF01 SDO, arduino 10 cannot be changed |
| //----------------- // RF01 niRQ, arduino 02 cannot be changed |
| //------------------// RF01 nFFS: 1-10k Pullup too Vcc |
| |
| #define LED_PORT PORTD |
| #define LED_DDR DDRD |
| #define LED_PIN PIND |
| |
| #define LED0 5 |
| #define LED1 6 //not used |
| |
| // nFFS: 1-10k Pullup an 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 |
| |
| // maximum receive buffer |
| #define RF_MAX 32 |
| unsigned char rf01_buf[RF_MAX]; // recv buf |
| |
| #include <util/delay.h> |
| |
| void rf01_receive(){ |
| rf01_rxdata(rf01_data, 32); |
| } |
| |
| void rf01_prepAll(){ |
| rf01_init(); // ein paar Register setzen (z.B. CLK auf 10MHz) |
| rf01_setfreq(RF01FREQ(434)); // Sende/Empfangsfrequenz auf 433,92MHz einstellen |
| rf01_setbandwidth(4); // 4 200kHz Bandbreite |
| rf01_setreceiver(2,4); //2,4 -6dB Verstärkung, DRSSI threshold: -79dBm |
| rf01_setbaud(57600); // 19200 Baud |
| |
| } |
| |
| static unsigned char sdrssi, sgain; |
| |
| void rf01_trans(unsigned short wert) |
| { unsigned char i; |
| |
| cbi(RF_PORT, CS); |
| for (i=0; i<16; i++) |
| { if (wert&32768) |
| sbi(RF_PORT, SDI); |
| else |
| cbi(RF_PORT, SDI); |
| sbi(RF_PORT, SCK); |
| wert<<=1; |
| _delay_us(0.2); |
| cbi(RF_PORT, SCK); |
| } |
| sbi(RF_PORT, CS); |
| } |
| |
| void rf01_init(void) |
| { unsigned char i; |
| |
| RF_PORT=(1<<CS); |
| RF_DDR=(1<<SDI)|(1<<SCK)|(1<<CS); |
| |
| for (i=0; i<11; i++) |
| _delay_ms(10); // wait until POR done |
| |
| rf01_trans(0xC2E0); // AVR CLK: 10MHz |
| rf01_trans(0xC42B); // Data Filter: internal |
| rf01_trans(0xCE88); // FIFO mode |
| rf01_trans(0xC6F7); // AFC settings: autotuning: -10kHz...+7,5kHz |
| rf01_trans(0xE000); // disable wakeuptimer |
| rf01_trans(0xCC00); // disable low duty cycle |
| |
| LED_DDR= 0xFF;//(1<<LED0)|(1<<LED1); |
| blinkLED(); |
| |
| } |
| |
| void rf01_setbandwidth(unsigned char bandwidth) |
| { |
| rf01_trans(0x8970|((bandwidth&7)<<1)); |
| } |
| |
| void rf01_setreceiver(unsigned char gain, unsigned char drssi) |
| { |
| sdrssi=drssi; |
| sgain=gain; |
| } |
| |
| void rf01_setfreq(unsigned short freq) |
| { if (freq<96) // 430,2400MHz |
| freq=96; |
| else if (freq>3903) // 439,7575MHz |
| freq=3903; |
| rf01_trans(0xA000|freq); |
| } |
| |
| void rf01_setbaud(unsigned short baud) |
| { |
| if (baud<336) |
| return; |
| if (baud<5400) // Baudrate= 344827,58621/(R+1)/(1+CS*7) |
| rf01_trans(0xC880|((43104/baud)-1)); |
| else |
| rf01_trans(0xC800|((344828UL/baud)-1)); |
| |
| rf01_trans(0xC806); |
| } |
| |
| void rf01_rxdata(unsigned char *data, unsigned char number) |
| { unsigned char i,j,c; |
| |
| rf01_trans(0xC0C1|((sgain&3)<<4)|((sdrssi&7)<<1)); // RX on |
| rf01_trans(0xCE89); // set FIFO mode |
| rf01_trans(0xCE8B); // enable FIFO |
| cbi(RF_PORT, SDI); |
| for (i=0; i<number; i++) |
| { cbi(RF_PORT, CS); |
| while (!(RF_PIN&(1<<SDO))); // wait until data in FIFO |
| for (j=0; j<16; j++) // read and discard status register |
| { sbi(RF_PORT, SCK); |
| asm("nop"); |
| cbi(RF_PORT, SCK); |
| } |
| c=0; |
| for (j=0; j<8; j++) |
| { c<<=1; |
| if (RF_PIN&(1<<SDO)) |
| c|=1; |
| sbi(RF_PORT, SCK); |
| _delay_us(0.2); |
| cbi(RF_PORT, SCK); |
| } |
| *data++=c; |
| sbi(RF_PORT, CS); |
| } |
| //blinkLED(); |
| rf01_trans(0xC0C0|((sgain&3)<<4)|((sdrssi&7)<<1)); // RX off |
| } |
| |
| void blinkLED(void){ |
| for (unsigned char i=0; i<15; i++) |
| _delay_ms(5); |
| sLED1(); |
| |
| for (unsigned char i=0; i<15; i++) |
| _delay_ms(5); |
| cLED1(); |
| |
| } |
| |
| void makePulse(int numberOfPulses){ |
| if ( numberOfPulses > 0) |
| { |
| for (unsigned char i=0; i<numberOfPulses; i++) |
| { |
| _delay_ms(20); |
| sLED0(); |
| _delay_ms(20); |
| cLED0(); |
| } |
| _delay_ms(50); |
| } |
| |
| } |
| |