| 0,0 → 1,250 |
|---|
| /* mija 2008 |
| demo for RFM01 - RX 868MHz |
| |
| CPU ATtiny2313 |
| fcpu = 1MHz |
| |
| !! define PIN,PORT,DDR for IOpin !! |
| |
| |
| */ |
| |
| #include <avr/io.h> |
| #include <util/delay.h> |
| #include <avr/interrupt.h> |
| #include "RFM01.h" |
| |
| //************************************************************************ |
| |
| #define LENGTH_MSG 20 |
| |
| #define SDI PD3 |
| #define SDI_PORT PORTD |
| #define SDI_DDR DDRD |
| |
| #define SDO PA1 // input for mega |
| #define SDO_PORT PORTA |
| #define SDO_DDR DDRA |
| #define SDO_PIN PINA |
| |
| #define SCK PD4 |
| #define SCK_PORT PORTD |
| #define SCK_DDR DDRD |
| |
| #define nIRQ PD2 // input for mega |
| #define nIRQ_PORT PORTD |
| #define nIRQ_DDR DDRD |
| #define nIRQ_PIN PIND |
| |
| #define nSEL PD5 |
| #define nSEL_PORT PORTD |
| #define nSEL_DDR DDRD |
| |
| #define LED PB0 |
| #define LED_PORT PORTB |
| #define LED_DDR DDRB |
| |
| // interni |
| #define SDI_H SDI_PORT |= _BV(SDI) |
| #define SDI_L SDI_PORT &= (~(_BV(SDI))) |
| #define SDI_INIT SDI_DDR |= _BV(SDI) |
| |
| #define SDO_INPUT (SDO_PIN & _BV(SDO)) |
| #define SDO_INIT SDO_DDR &= (~(_BV(SDO))) |
| |
| #define SCK_H SCK_PORT |= _BV(SCK) |
| #define SCK_L SCK_PORT &= (~(_BV(SCK))) |
| #define SCK_INIT SCK_DDR |= _BV(SCK) |
| |
| #define nIRQ_INPUT (nIRQ_PIN & _BV(nIRQ)) |
| #define nIRQ_INIT nIRQ_DDR &= (~(_BV(nIRQ))) |
| |
| #define nSEL_H nSEL_PORT |= _BV(nSEL) |
| #define nSEL_L nSEL_PORT &= (~(_BV(nSEL))) |
| #define nSEL_INIT nSEL_DDR |= _BV(nSEL) |
| |
| #define LED_H LED_PORT |= _BV(LED) |
| #define LED_L LED_PORT &= (~(_BV(LED))) |
| #define LED_INIT LED_DDR |= _BV(LED) |
| |
| #define START_FIFO RF_WRITE_CMD(CMD_FIFO|FIFO_8|FIFO_VDI_WORD|FIFO_FF|FIFO_FE) |
| //#define START_FIFO RF_WRITE_CMD(CMD_FIFO|FIFO_8|FIFO_ALWAYS|FIFO_FF|FIFO_FE) |
| #define STOP_FIFO RF_WRITE_CMD(CMD_FIFO) |
| #define BLIK_LED tik262ms=1 |
| |
| //************************************************************************ |
| |
| uint8_t rx_buf[LENGTH_MSG+1]; |
| volatile uint8_t tik262ms; |
| |
| //************************************************************************ |
| |
| void delay_ms(uint16_t time) |
| { |
| while(time--) _delay_ms(1); |
| } |
| |
| void IO_INIT(void) |
| { |
| SDI_INIT; |
| SDO_INIT; |
| SCK_INIT; |
| nIRQ_INIT; |
| nSEL_INIT; |
| LED_INIT; |
| } |
| |
| void RF_INIT(void) |
| { |
| nSEL_H; |
| SDI_H; |
| SCK_L; |
| nIRQ_INPUT; |
| SDO_INPUT; |
| } |
| |
| void RS232_INIT(void) |
| { |
| //set baud rate fixed 9600 8N1 for fosc 1Mhz |
| UCSRA = _BV(U2X) ; |
| UBRRL = 12; |
| UCSRB = _BV(TXEN) | _BV(RXCIE);//_BV(RXEN) | |
| } |
| |
| void TIMER0_INIT(void) |
| { |
| // enable timer0 for f=fosc/1024 cca 262ms |
| TCCR0B = _BV(CS02) | _BV(CS00); |
| TIMSK |= _BV(TOIE0); |
| } |
| |
| ISR(TIMER0_OVF_vect) |
| { |
| if (tik262ms) {tik262ms--;LED_H;} |
| else LED_L; |
| } |
| |
| void put_rs232(char data) |
| { |
| while (!( UCSRA & _BV(UDRE))); |
| UDR = data; |
| } |
| |
| uint16_t RF_WRITE_CMD(uint16_t cmd) |
| { |
| uint8_t i; |
| uint16_t temp; |
| |
| SCK_L; |
| nSEL_L; |
| temp=0; |
| for (i=0;i<16;i++) |
| { |
| if (cmd & 0x8000) SDI_H; |
| else SDI_L; |
| SCK_H; |
| cmd <<= 1; |
| temp <<= 1; |
| if(SDO_INPUT) temp |= 0x0001; |
| SCK_L; |
| } |
| SCK_L; |
| nSEL_H; |
| return (temp); |
| } |
| |
| void RF_WRITE_DATA(uint8_t data) |
| { |
| while (nIRQ_INPUT); |
| RF_WRITE_CMD(0xB800 + data); |
| } |
| |
| uint8_t RF_READ_DATA(void) |
| { |
| uint8_t i,result; |
| |
| while (nIRQ_INPUT); |
| SCK_L; |
| nSEL_L; |
| SDI_L; |
| result=0; |
| for (i=0;i<24;i++) |
| { |
| result <<= 1; |
| if (SDO_INPUT) result |= 0x01; |
| SCK_H; |
| SCK_L; |
| } |
| nSEL_H; |
| return (result); |
| } |
| |
| int main() |
| { |
| uint8_t i,ChkSum; |
| //uint8_t LED_TRG; |
| uint8_t b; |
| |
| IO_INIT(); |
| RS232_INIT(); |
| RF_INIT(); |
| TIMER0_INIT(); |
| sei(); |
| delay_ms(100); |
| LED_L; |
| //LED_TRG=0; |
| |
| RF_WRITE_CMD(CMD_SETTING |BAND_868 | C_12pF | BANDWIDTH_134 | SETTING_DC); |
| RF_WRITE_CMD(CMD_FREQUENCY |FREQUENCY_868); |
| RF_WRITE_CMD(CMD_RATE |RATE_9600); |
| RF_WRITE_CMD(CMD_FILTER |FILTER_AL | FILTER_S0 | DQD_4); |
| RF_WRITE_CMD(CMD_AFC |AFC_POWER_ON | AFC_RANG_8 | AFC_ST | AFC_OE | AFC_EN); |
| RF_WRITE_CMD(CMD_RX); |
| RF_WRITE_CMD(CMD_RX |VDI_CLOCK | LNA_GAIN_0 | DRSSI_103 | RX_EN); |
| RF_WRITE_CMD(CMD_FIFO); |
| |
| for (b=0;b<3;b++){BLIK_LED;delay_ms(500);} |
| delay_ms(500); |
| put_rs232('\f'); |
| while (1) |
| { |
| |
| cli(); |
| START_FIFO; |
| ChkSum = 0; |
| for (i=0;i<LENGTH_MSG;i++) |
| { |
| b = RF_READ_DATA(); |
| LED_H; |
| rx_buf[i] = b; |
| ChkSum += b; |
| } |
| //BLIK_LED; |
| b = RF_READ_DATA(); |
| RF_READ_DATA(); |
| STOP_FIFO; |
| LED_L; |
| //sei(); |
| |
| if (ChkSum == b) |
| { |
| //BLIK_LED;//LED_TRG = ~ LED_TRG; |
| for (i=0;i<LENGTH_MSG;i++) put_rs232(rx_buf[i]); |
| } |
| else |
| { |
| put_rs232('\f'); |
| put_rs232('e'); |
| put_rs232('r'); |
| put_rs232('r'); |
| put_rs232('o'); |
| put_rs232('r'); |
| } |
| //if (LED_TRG) LED_H; |
| //else LED_L; |
| } |
| return 0; |
| } |
| |
| |
| |