Initial commit of files

SoftwareDefined/HackRF/hackrf-2015.07.2/firmware/sgpio-rx/CMakeLists.txt

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+# Copyright 2012 Jared Boone <jared@sharebrained.com>
+#
+# 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.
+#
+
+cmake_minimum_required(VERSION 2.8.9)
+set(CMAKE_TOOLCHAIN_FILE ../toolchain-arm-cortex-m.cmake)
+
+project(sgpio-rx)
+
+include(../hackrf-common.cmake)
+
+set(SRC_M4
+	sgpio-rx.c
+	${PATH_HACKRF_FIRMWARE_COMMON}/tuning.c
+)
+
+DeclareTargets()

SoftwareDefined/HackRF/hackrf-2015.07.2/firmware/sgpio-rx/README

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+This is a variation of sgpio.c for testing RX.

SoftwareDefined/HackRF/hackrf-2015.07.2/firmware/sgpio-rx/sgpio-rx.c

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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/gpio.h>
+#include <libopencm3/lpc43xx/sgpio.h>
+
+#include <hackrf_core.h>
+#include <rf_path.h>
+#include <sgpio.h>
+#include <tuning.h>
+
+void tx_test() {
+	sgpio_set_slice_mode(false);
+	sgpio_configure(TRANSCEIVER_MODE_TX);
+	
+	// LSB goes out first, samples are 0x<Q1><I1><Q0><I0>
+	volatile uint32_t buffer[] = {
+		0xda808080,
+		0xda80ff80,
+		0x26808080,
+		0x26800180,
+	};
+	uint32_t i = 0;
+
+	sgpio_cpld_stream_enable();
+	
+	while(true) {
+		while(SGPIO_STATUS_1 == 0);
+		SGPIO_REG_SS(SGPIO_SLICE_A) = buffer[(i++) & 3];
+		SGPIO_CLR_STATUS_1 = 1;
+	}
+}
+
+void rx_test() {
+	sgpio_set_slice_mode(false);
+	sgpio_configure(TRANSCEIVER_MODE_RX);
+
+    volatile uint32_t buffer[4096];
+    uint32_t i = 0;
+	int16_t magsq;
+	int8_t sigi, sigq;
+
+    sgpio_cpld_stream_enable();
+
+	gpio_set(PORT_LED1_3, (PIN_LED2)); /* LED2 on */
+    while(true) {
+        while(SGPIO_STATUS_1 == 0);
+		gpio_set(PORT_LED1_3, (PIN_LED1)); /* LED1 on */
+        SGPIO_CLR_STATUS_1 = 1;
+        buffer[i & 4095] = SGPIO_REG_SS(SGPIO_SLICE_A);
+
+		/* find the magnitude squared */
+		sigi = (buffer[i & 4095] & 0xff) - 0x80;
+		sigq = ((buffer[i & 4095] >> 8) & 0xff) - 0x80;
+		magsq = sigi * sigq;
+		if ((uint16_t)magsq & 0x8000) {
+			magsq ^= 0xffff;
+			magsq++;
+		}
+		
+		/* illuminate LED3 only when magsq exceeds threshold */
+		if (magsq > 0x3c00)
+			gpio_set(PORT_LED1_3, (PIN_LED3)); /* LED3 on */
+		else
+			gpio_clear(PORT_LED1_3, (PIN_LED3)); /* LED3 off */
+		i++;
+    }
+}
+
+int main(void) {
+
+	const uint64_t freq = 2700000000U;
+
+	pin_setup();
+	enable_1v8_power();
+#ifdef HACKRF_ONE
+	enable_rf_power();
+#endif
+	cpu_clock_init();
+    ssp1_init();
+    rf_path_init();
+    rf_path_set_direction(RF_PATH_DIRECTION_RX);
+
+	set_freq(freq);
+
+	rx_test();
+	gpio_set(PORT_LED1_3, (PIN_LED2)); /* LED2 on */
+
+	while (1) {
+
+	}
+
+	return 0;
+}

SoftwareDefined/HackRF/hackrf-2015.07.2/firmware/sgpio-rx/table.py

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+mossmann@grumio ~/github/hackrf/firmware/simpletx $ python
+Python 2.7.3 (default, Jun 22 2012, 11:10:47) 
+[GCC 4.5.3] on linux2
+Type "help", "copyright", "credits" or "license" for more information.
+>>> import math
+>>> def y(i,max):
+...     return int(127.5*(math.sin(tau*i/max)+1))
+... 
+>>> tau=math.pi*2
+>>> def x(i,max):
+...     return int(127.5*(math.cos(tau*i/max)+1))
+... 
+>>> def table(max):
+...     for i in range(0, max, 2):
+...             print "%02x%02x%02x%02x," % (y(i+1,max), x(i+1,max), y(i,max), x(i,max))
+... 
+>>> table(32)
+98fc7fff,
+c6e9b0f5,
+e9c6d9d9,
+fc98f5b0,
+fc66ff7f,
+e938f54e,
+c615d925,
+9802b009,
+66027f00,
+38154e09,
+15382525,
+0266094e,
+0298007f,
+15c609b0,
+38e925d9,
+66fc4ef5,
+
+
+>>> def table(max):
+...     for i in range(0, max, 2):
+...             print "0x%02x%02x%02x%02x," % (y(i+1,max), x(i+1,max), y(i,max), x(i,max))
+... 
+>>> table(32)
+0x98fc7fff,
+0xc6e9b0f5,
+0xe9c6d9d9,
+0xfc98f5b0,
+0xfc66ff7f,
+0xe938f54e,
+0xc615d925,
+0x9802b009,
+0x66027f00,
+0x38154e09,
+0x15382525,
+0x0266094e,
+0x0298007f,
+0x15c609b0,
+0x38e925d9,
+0x66fc4ef5,
+