/Designs/HOPEwireless/SW_TX_RFM12B/TX_RFM12B.c
0,0 → 1,190
/* mija 2008
demo for RFM12B - TX 868MHz
 
CPU ATMEGA16
fcpu = 1MHz
 
!! define PIN,PORT,DDR for IOpin !!
*/
 
#include <avr/io.h>
#include <util/delay.h>
#include "RFM12B.h"
 
//************************************************************************
 
#define SDI PB3
#define SDI_PORT PORTB
#define SDI_DDR DDRB
 
#define FSK PC1
#define FSK_PORT PORTC
#define FSK_DDR DDRC
 
#define SDO PB4 // input for mega
#define SDO_PORT PORTB
#define SDO_DDR DDRB
#define SDO_PIN PINB
 
#define SCK PB5
#define SCK_PORT PORTB
#define SCK_DDR DDRB
 
#define nIRQ PD2 // input for mega
#define nIRQ_PORT PORTD
#define nIRQ_DDR DDRD
#define nIRQ_PIN PIND
 
#define nSEL PB2
#define nSEL_PORT PORTB
#define nSEL_DDR DDRB
 
#define LED PC3
#define LED_PORT PORTC
#define LED_DDR DDRC
 
// interni
#define SDI_H SDI_PORT |= _BV(SDI)
#define SDI_L SDI_PORT &= (~(_BV(SDI)))
#define SDI_INIT SDI_DDR |= _BV(SDI)
 
#define FSK_H FSK_PORT |= _BV(FSK)
#define FSK_L FSK_PORT &= (~(_BV(FSK)))
#define FSK_INIT FSK_DDR |= _BV(FSK)
 
#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_TX RF_WRITE_CMD(CMD_POWER|POWER_ET|POWER_ES|POWER_EX|POWER_DC)
#define STOP_TX RF_WRITE_CMD(CMD_POWER|POWER_DC)
 
//************************************************************************
 
//uint8_t test[16]={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x03b,0x3c,0x3d,0x3e,0x3f};
uint8_t test[17]="\n\rATmega16\n\r ---";
//uint8_t test[16]="0123456789abcdef";
 
 
//************************************************************************
 
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;
FSK_INIT;
LED_INIT;
}
 
void RF_INIT(void)
{
nSEL_H;
SDI_H;
SCK_L;
nIRQ_INPUT;
SDO_INPUT;
FSK_H;
}
 
void RF_WRITE_CMD(uint16_t cmd)
{
uint8_t i;
 
SCK_L;
nSEL_L;
for (i=0;i<16;i++)
{
SCK_L;
SCK_L;
if (cmd & 0x8000) SDI_H;
else SDI_L;
SCK_H;
SCK_H;
cmd <<= 1;
}
SCK_L;
nSEL_H;
}
 
void RF_WRITE_DATA(uint8_t data)
{
while (nIRQ_INPUT);
RF_WRITE_CMD(0xB800 + data);
}
 
int main()
{
uint8_t i,j,ChkSum;
 
IO_INIT();
RF_INIT();
LED_H;
delay_ms(100);
 
RF_WRITE_CMD(CMD_SETTING |SETTING_EL |SETTING_EF |BAND_868 |C_12pF );
RF_WRITE_CMD(CMD_POWER |POWER_ET |POWER_ES |POWER_EX |POWER_DC );
RF_WRITE_CMD(CMD_FREQUENCY |FREQUENCY_868 );
RF_WRITE_CMD(CMD_RATE |RATE_9600 );
//RF_WRITE_CMD(CMD_RX |RX_P16|VDI_FAST|BANDWIDTH_134|LNA_GAIN_0|DRSSI_103 );
//RF_WRITE_CMD(CMD_FILTER |FILTER_AL |DQD_4 );
//RF_WRITE_CMD(CMD_FIFO |FIFO_8 |FIFO_DR );
//RF_WRITE_CMD(CMD_SYNCFIFO |0xD4 );
//RF_WRITE_CMD(CMD_AFC |AFC_POWER_ON|AFC_RANG_8|AFC_OE |AFC_EN );
RF_WRITE_CMD(CMD_TX |TX_DEV_45 |TX_POWER_0 );
//RF_WRITE_CMD(CMD_PLL |PLL_CLK_25 |PLL_LPX |PLL_DDIT |PLL_BW0 );
 
j= 0;
while (1)
{
LED_H;
RF_WRITE_CMD(0x0000);
 
START_TX;
ChkSum = 0;
for (i=0;i<3;i++) RF_WRITE_DATA(0xAA);
RF_WRITE_DATA(0x2D);
RF_WRITE_DATA(0xD4);
for (i=0;i<16;i++)
{
RF_WRITE_DATA(test[i]);
ChkSum += test[i];
}
RF_WRITE_DATA(ChkSum);
RF_WRITE_DATA(0xAA);
RF_WRITE_DATA(0xAA);
STOP_TX;
LED_L;
delay_ms(500);
j++;
test[13]=(j/100)+0x30;
test[14]=((j%100)/10)+0x30;
test[15]=((j%100)%10)+0x30;
}
return 0;
}