131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/*
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* Copyright 2012 Michael Ossmann
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* Copyright (C) 2012 Jared Boone
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include <libopencm3/lpc43xx/gpio.h>
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#include <libopencm3/lpc43xx/scu.h>
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#include <libopencm3/lpc43xx/sgpio.h>
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#include <libopencm3/lpc43xx/cgu.h>
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#include <libopencm3/cm3/scs.h>
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#include <hackrf_core.h>
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#include <max5864.h>
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#include <max2837.h>
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#include <rffc5071.h>
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#include <sgpio.h>
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void tx_test() {
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sgpio_configure(TRANSCEIVER_MODE_TX, false);
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// LSB goes out first, samples are 0x<Q1><I1><Q0><I0>
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volatile uint32_t buffer[] = {
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0xda808080,
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0xda80ff80,
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0x26808080,
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0x26800180,
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};
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uint32_t i = 0;
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sgpio_cpld_stream_enable();
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while(true) {
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while(SGPIO_STATUS_1 == 0);
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SGPIO_REG_SS(SGPIO_SLICE_A) = buffer[(i++) & 3];
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SGPIO_CLR_STATUS_1 = 1;
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}
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}
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void rx_test() {
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sgpio_configure(TRANSCEIVER_MODE_RX, false);
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volatile uint32_t buffer[4096];
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uint32_t i = 0;
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int16_t magsq;
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int8_t sigi, sigq;
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sgpio_cpld_stream_enable();
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gpio_set(PORT_LED1_3, (PIN_LED2)); /* LED2 on */
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while(true) {
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while(SGPIO_STATUS_1 == 0);
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gpio_set(PORT_LED1_3, (PIN_LED1)); /* LED1 on */
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SGPIO_CLR_STATUS_1 = 1;
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buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A);
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/* find the magnitude squared */
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sigi = (buffer[i & 4095] & 0xff) - 0x80;
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sigq = ((buffer[i & 4095] >> 8) & 0xff) - 0x80;
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magsq = sigi * sigq;
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if ((uint16_t)magsq & 0x8000) {
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magsq ^= 0xffff;
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magsq++;
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}
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/* illuminate LED3 only when magsq exceeds threshold */
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if (magsq > 0x3c00)
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gpio_set(PORT_LED1_3, (PIN_LED3)); /* LED3 on */
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else
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gpio_clear(PORT_LED1_3, (PIN_LED3)); /* LED3 off */
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i++;
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}
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}
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int main(void) {
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const uint32_t freq = 2700000000U;
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uint8_t switchctrl = 0;
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pin_setup();
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enable_1v8_power();
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cpu_clock_init();
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CGU_BASE_PERIPH_CLK = CGU_BASE_PERIPH_CLK_AUTOBLOCK
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| CGU_BASE_PERIPH_CLK_CLK_SEL(CGU_SRC_PLL1);
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CGU_BASE_APB1_CLK = CGU_BASE_APB1_CLK_AUTOBLOCK
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| CGU_BASE_APB1_CLK_CLK_SEL(CGU_SRC_PLL1);
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ssp1_init();
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ssp1_set_mode_max2837();
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max2837_setup();
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rffc5071_setup();
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#ifdef JAWBREAKER
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switchctrl = (SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_HP);
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#endif
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rffc5071_rx(switchctrl);
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rffc5071_set_frequency(500, 0); // 500 MHz, 0 Hz (Hz ignored)
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max2837_set_frequency(freq);
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max2837_start();
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max2837_rx();
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ssp1_set_mode_max5864();
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max5864_xcvr();
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rx_test();
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gpio_set(PORT_LED1_3, (PIN_LED2)); /* LED2 on */
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while (1) {
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}
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return 0;
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}
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