mixertx: tests RFFC5071/Lollipop

firmware/mixertx/Makefile

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+# Hey Emacs, this is a -*- makefile -*-
+
+BINARY = mixertx
+
+SRC = $(BINARY).c \
+	../common/hackrf_core.c \
+	../common/si5351c.c \
+	../common/max2837.c \
+	../common/rffc5071.c
+
+include ../common/Makefile_inc.mk

firmware/mixertx/README

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+This program activates the MAX2837 transceiver to transmit an unmodulated
+carrier.  It also configures the RFFC5071 to downconvert the carrier to a lower
+frequency.
+
+Required Lemondrop -> Jellybean connections:
+
+SCK:  Lemondrop P3 pin 2 -> Jellybean P9 2
+MOSI: Lemondrop P3 pin 4 -> Jellybean P9 4
+MISO: Lemondrop P3 pin 6 -> Jellybean P9 6
+SSEL: Lemondrop P3 pin 3 -> Jellybean P9 3
+SCL:  Lemondrop P7 pin 3 -> Jellybean P6 pin 3
+SDA:  Lemondrop P7 pin 5 -> Jellybean P6 pin 5
+SDA:  Lemondrop P7 pin 6 -> Jellybean P6 pin 6
+VCC:  Lemondrop P4 pin 2, 4, or 6 -> Jellybean P17 pin 2, 4, or 6
+1V8:  Lemondrop P11 pin 2, 4, or 6 -> Jellybean P16 pin 2, 4, or 6
+GND:  Lemondrop P5 -> Jellybean P13
+
+Required Lollipop -> Jellybean connections:
+GND: Lollipop P8 pin 1, 3, or 5 -> Jellybean P17 pin 1, 3, or 5
+VCC: Lollipop P8 pin 2, 4, or 6 -> Jellybean P17 pin 2, 4, or 6
+ENX: Lollipop P4 pin 5 -> Jellybean P5 pin 1
+SCLK: Lollipop P4 pin 3 -> Jellybean P5 pin 3
+DATA: Lollipop P4 pin 1 -> Jellybean P5 pin 5
+
+Also RF connectors, and you're on your own to get the RF switches configured
+properly.

firmware/mixertx/mixertx.c

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+/*
+ * Copyright 2012 Michael Ossmann
+ *
+ * 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/scu.h>
+#include <libopencm3/lpc43xx/i2c.h>
+#include <libopencm3/lpc43xx/ssp.h>
+
+#include "hackrf_core.h"
+#include "max2837.h"
+#include "rffc5071.h"
+
+void pin_setup(void)
+{
+	/* Configure SCU Pin Mux as GPIO */
+	scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
+	scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
+	scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
+
+	scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
+
+	/* Configure all GPIO as Input (safe state) */
+	GPIO0_DIR = 0;
+	GPIO1_DIR = 0;
+	GPIO2_DIR = 0;
+	GPIO3_DIR = 0;
+	GPIO4_DIR = 0;
+	GPIO5_DIR = 0;
+	GPIO6_DIR = 0;
+	GPIO7_DIR = 0;
+
+	/* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
+	GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3);
+
+	/* GPIO3[6] on P6_10  as output. */
+	GPIO3_DIR |= PIN_EN1V8;
+}
+
+int main(void)
+{
+	const uint32_t freq = 2441000000U;
+
+	pin_setup();
+	gpio_set(PORT_EN1V8, PIN_EN1V8); /* 1V8 on */
+	cpu_clock_init();
+
+	gpio_set(PORT_LED1_3, (PIN_LED1)); /* LED1 on */
+
+	max2837_setup();
+	rffc5071_init();
+	gpio_set(PORT_LED1_3, (PIN_LED2)); /* LED2 on */
+
+	/* FIXME testing serial reads */
+	while (1) {
+		//rffc5071_init();
+		//rffc5071_reg_write(0x7a, 0xf0ca);
+		if (rffc5071_reg_read(0x00) == 0xbefb)
+			gpio_set(PORT_LED1_3, (PIN_LED3)); /* LED3 on */
+		else
+			gpio_clear(PORT_LED1_3, (PIN_LED3)); /* LED3 off */
+	}
+
+	max2837_set_frequency(freq);
+	max2837_start();
+	max2837_tx();
+	gpio_set(PORT_LED1_3, (PIN_LED3)); /* LED3 on */
+	while (1);
+	max2837_stop();
+
+	return 0;
+}