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/*
*
* mur.sat
*
* Somewhen in the year 2012, mur.at will have a nano satellite launched
* into a low earth orbit (310 km above the surface of our planet). The
* satellite itself is a TubeSat personal satellite kit, developed and
* launched by interorbital systems. mur.sat is a joint venture of mur.at,
* ESC im Labor and realraum.
*
* Please visit the project hompage at sat.mur.at for further information.
*
*
* Copyright (C) 2013 Christian Pointner <equinox@mur.at>
*
* This file is part of mur.sat.
*
* mur.sat is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* mur.sat is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with mur.sat. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <stdio.h>
#include "led.h"
#include "util.h"
#include "usbio.h"
#include "rda1846.h"
#include "rda1846_defines.h"
#define DEFAULT_FREQ_2M 145900
#define DEFAULT_FREQ_70CM 435000
int32_t default_freq = DEFAULT_FREQ_2M;
int32_t current_freq_kHz = DEFAULT_FREQ_2M;
static void reset_rda(void)
{
printf("soft resetting RDA1846.\r\n");
rda1846_soft_reset();
current_freq_kHz = default_freq = DEFAULT_FREQ_2M;
}
static void reinit_rda(void)
{
printf("initializing RDA1846.\r\n");
rda1846_reg_init();
current_freq_kHz = default_freq = DEFAULT_FREQ_2M;
}
static void set_default_freq(void)
{
current_freq_kHz = default_freq;
printf("setting frequency to %d.%03d MHz .. ", (uint16_t)(current_freq_kHz / 1000),
(uint16_t)(current_freq_kHz % 1000));
if(rda1846_set_freq_kHz(current_freq_kHz))
printf("error\r\n");
else
printf("ok\r\n");
}
static int32_t print_actual_freq(void)
{
int32_t f = rda1846_get_freq_kHz();
if(f < 0)
printf("actual frequency: NaN MHz\r\n");
else
printf("actual frequency: %d.%03d MHz\r\n", (uint16_t)(f / 1000), (uint16_t)(f % 1000));
return f;
}
static void update_current_freq(void)
{
printf("setting frequency to %d.%03d MHz .. ", (uint16_t)(current_freq_kHz / 1000),
(uint16_t)(current_freq_kHz % 1000));
rda1846_state_t old_state = rda1846_get_state();
if(old_state == receive || old_state == transmit)
rda1846_idle();
if(rda1846_set_freq_kHz(current_freq_kHz))
printf("error\r\n");
else
printf("ok\r\n");
if(old_state == receive)
rda1846_receive();
else if(old_state == transmit)
rda1846_transmit();
}
static void set_band(rf_band_t b)
{
printf("setting band to %s\r\n", rda1846_rf_band_to_string(b));
rda1846_set_band(b);
default_freq = b == b_2m ? DEFAULT_FREQ_2M : DEFAULT_FREQ_70CM;
set_default_freq();
}
static void set_bw(channel_bw_t bw)
{
printf("setting bandwidth to %s\r\n", rda1846_channel_bw_to_string(bw));
rda1846_set_bw(bw);
}
static void print_status(void)
{
printf("current state: %s\r\n", rda1846_state_to_string(rda1846_get_state()));
int16_t rssi = rda1846_get_rssi();
printf("rssi: ");
if(rssi < 0) {
printf("-");
rssi*=-1;
}
printf("%d.%03d dB\r\n", (uint16_t)(rssi / 8), (uint16_t)((rssi % 8)*125));
int16_t vssi = rda1846_get_vssi();
if(vssi < 0)
printf("vssi: NaN mV\r\n");
else
printf("vssi: %d mV\r\n", vssi);
uint16_t flags = rda1846_get_flags();
if(flags == 0xFFFF)
printf("flags: ERROR\r\n");
else
printf("flags: %04X\r\n", flags);
print_actual_freq();
}
static void print_dtmf(void)
{
uint8_t idx1, idx2, code, valid;
uint16_t raw = rda1846_get_dtmf(&idx1, &idx2, &code, &valid);
if(raw == 0xFFFF)
printf("DTMF: ERROR\r\n");
else
printf("DTMF: raw=0x%04X, tone1=%d, tone2=%d, code=0x%02X, valid=%d\r\n", raw, idx1, idx2, code, valid);
rda1846_clear_int();
}
static void handle_cmd(uint8_t cmd)
{
switch(cmd) {
case '0': rda1846_gpio_AA(); led_off(); printf("led OFF\r\n"); break;
case '1': rda1846_gpio_55(); led_on(); printf("led ON\r\n"); break;
case 't': led_toggle(); printf("led TOGGLE\r\n"); break;
case '!': rda1846_soft_reset(); reset2bootloader(); break;
case 'r': reset_rda(); break;
case 'i': reinit_rda(); break;
case 'F': set_default_freq(); break;
case '2': set_band(b_2m); break;
case '7': set_band(b_70cm); break;
case 'b': set_bw(bw_12k5); break;
case 'B': set_bw(bw_25k); break;
case 'g': rda1846_gpio_off(); printf("GPIO off\r\n"); break;
case 'G': rda1846_gpio_default(); printf("GPIO to defaults\r\n"); break;
case 'f': print_actual_freq(); break;
case 's': print_status(); break;
case 'd': print_dtmf(); break;
case 'D': rda1846_dump_register(); break;
case 'P': rda1846_powerdown(); print_status(); break;
case 'I': rda1846_idle(); print_status(); break;
case 'R': rda1846_receive(); print_status(); break;
case 'T': rda1846_transmit(); print_status(); break;
case '+': current_freq_kHz+=25; update_current_freq(); break;
case '-': current_freq_kHz-=25; update_current_freq(); break;
default: printf("\r\n"); return;
}
}
int main(void)
{
MCUSR &= ~(1 << WDRF);
wdt_disable();
cpu_init();
led_init();
usbio_init();
rda1846_init();
sei();
for(;;) {
int16_t BytesReceived = usbio_bytes_received();
while(BytesReceived > 0) {
int ReceivedByte = fgetc(stdin);
if(ReceivedByte != EOF) {
handle_cmd(ReceivedByte);
}
BytesReceived--;
}
usbio_task();
}
}
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