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/*
* Copyright 2012 Michael Ossmann
* Copyright (C) 2012 Jared Boone
*
* This file is part of HackRF.
*
* This program 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 2, or (at your option)
* any later version.
*
* This program 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <libopencm3/lpc43xx/sgpio.h>
#include <hackrf_core.h>
#include <tuning.h>
void tx_test() {
// LSB goes out first, samples are 0x<Q1><I1><Q0><I0>
volatile uint32_t buffer[] = {
0xda808080,
0xda80ff80,
0x26808080,
0x26800180,
};
uint32_t i = 0;
rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_TX);
sgpio_cpld_stream_enable(&sgpio_config);
while(true) {
while(SGPIO_STATUS_1 == 0);
SGPIO_REG_SS(SGPIO_SLICE_A) = buffer[(i++) & 3];
SGPIO_CLR_STATUS_1 = 1;
}
}
void rx_test() {
volatile uint32_t buffer[4096];
uint32_t i = 0;
uint32_t magsq;
int8_t sigi, sigq;
rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_RX);
sgpio_cpld_stream_enable(&sgpio_config);
led_on(LED2);
while(true) {
while(SGPIO_STATUS_1 == 0);
led_on(LED1);
SGPIO_CLR_STATUS_1 = 1;
buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A);
/* find the magnitude squared */
sigi = buffer[i & 4095] & 0xff;
sigq = (buffer[i & 4095] >> 8) & 0xff;
magsq = sigi * sigi + sigq * sigq;
/* illuminate LED3 only when magsq exceeds threshold */
if (magsq > 0x1000)
led_on(LED3);
else
led_off(LED3);
i++;
}
}
int main(void) {
const uint64_t freq = 2441000000U;
sgpio_set_slice_mode(&sgpio_config, false);
pin_setup();
enable_1v8_power();
#ifdef HACKRF_ONE
enable_rf_power();
#endif
cpu_clock_init();
rf_path_init(&rf_path);
set_freq(freq);
rx_test();
led_on(LED2);
while (1) {
}
return 0;
}
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