From d4c43044e001895b5835c4f672af739a4db92634 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Wed, 29 Jul 2015 22:30:16 -0700
Subject: [PATCH 01/13] Shuffle binaries in SPI flash image to insert HackRF
 firmware binary.

Bootstrap is now 64k @ 0x00000.
HackRF image is 64k @ 0x10000.
Baseband image is 128k @ 0x20000.
Application image is remainder of SPI flash, @ 0x40000.
---
 firmware/Makefile                   | 13 ++++++++++---
 firmware/application/m4_startup.cpp |  2 +-
 firmware/bootstrap/bootstrap.c      |  2 +-
 3 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/firmware/Makefile b/firmware/Makefile
index a80ac819..b65c470a 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -23,12 +23,15 @@ PATH_BOOTSTRAP=bootstrap
 PATH_APPLICATION=application
 PATH_BASEBAND=baseband
 
+# TODO: Pass these (as #defines?) to Makefiles, use values in code.
 PAD_BOOTSTRAP=0x10000
-PAD_BASEBAND=0x10000
+PAD_HACKRF_FIRMWARE=0x10000
+PAD_BASEBAND=0x20000
 
 TARGET=portapack-h1-firmware
 
 TARGET_BOOTSTRAP=$(PATH_BOOTSTRAP)/bootstrap
+TARGET_HACKRF_FIRMWARE=hackrf_one_usb_rom_to_ram
 TARGET_APPLICATION=$(PATH_APPLICATION)/build/application
 TARGET_BASEBAND=$(PATH_BASEBAND)/build/baseband
 
@@ -53,12 +56,16 @@ program: $(TARGET).bin
 	sleep 1s
 	hackrf_spiflash -w $(TARGET).bin
 
-$(TARGET).bin: $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin
-	cat $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin >$(TARGET).bin
+$(TARGET).bin: $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin
+	cat $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin >$(TARGET).bin
 
 $(TARGET_BOOTSTRAP)_pad.bin: $(TARGET_BOOTSTRAP).elf
 	$(CP) -O binary --pad-to $(PAD_BOOTSTRAP) $(TARGET_BOOTSTRAP).elf $(TARGET_BOOTSTRAP)_pad.bin
 
+$(TARGET_HACKRF_FIRMWARE)_pad.bin: $(TARGET_HACKRF_FIRMWARE).bin
+	# TODO: Not confident this is reliable. It certainly won't work on Windows.
+	dd if=/dev/null of=$(TARGET_HACKRF_FIRMWARE)_pad.bin bs=1 count=1 seek=$(PAD_HACKRF_FIRMWARE)
+
 $(TARGET_BASEBAND)_pad.bin: $(TARGET_BASEBAND).elf
 	$(CP) -O binary --pad-to $(PAD_BASEBAND) $(TARGET_BASEBAND).elf $(TARGET_BASEBAND)_pad.bin
 
diff --git a/firmware/application/m4_startup.cpp b/firmware/application/m4_startup.cpp
index 100983e3..b2ba689e 100644
--- a/firmware/application/m4_startup.cpp
+++ b/firmware/application/m4_startup.cpp
@@ -27,7 +27,7 @@
 #include <cstddef>
 #include <cstring>
 
-static constexpr uint32_t m4_text_flash_image_offset = 0x10000;
+static constexpr uint32_t m4_text_flash_image_offset = 0x20000;
 static constexpr size_t m4_text_size = 0x8000;
 static constexpr uint32_t m4_text_flash_base = LPC_SPIFI_DATA_CACHED_BASE + m4_text_flash_image_offset;
 static constexpr uint32_t m4_text_ram_base = 0x10080000;
diff --git a/firmware/bootstrap/bootstrap.c b/firmware/bootstrap/bootstrap.c
index 87f9d8ef..862b861f 100644
--- a/firmware/bootstrap/bootstrap.c
+++ b/firmware/bootstrap/bootstrap.c
@@ -99,7 +99,7 @@ int main(void) {
 	/* NOTE: MEMMAP registers are ORed with the shadow address to create the
 	 * actual address.
 	 */
-	LPC_CREG->M0APPMEMMAP = LPC_SPIFI_DATA_CACHED_BASE + 0x20000;
+	LPC_CREG->M0APPMEMMAP = LPC_SPIFI_DATA_CACHED_BASE + 0x40000;
 
 	/* Change M0APP_RST to 0 */
 	LPC_RGU->RESET_CTRL[1] = 0;

From b32f5e2239c6f9aca78bdc547073c10ef87bb64b Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Thu, 30 Jul 2015 09:41:33 -0700
Subject: [PATCH 02/13] Generalize method for executing SPI flash image in M4
 RAM.

---
 firmware/application/m4_startup.cpp | 13 ++----
 firmware/application/m4_startup.hpp |  6 ++-
 firmware/application/main.cpp       |  4 +-
 firmware/common/spi_image.hpp       | 68 +++++++++++++++++++++++++++++
 4 files changed, 79 insertions(+), 12 deletions(-)
 create mode 100644 firmware/common/spi_image.hpp

diff --git a/firmware/application/m4_startup.cpp b/firmware/application/m4_startup.cpp
index b2ba689e..5a705bff 100644
--- a/firmware/application/m4_startup.cpp
+++ b/firmware/application/m4_startup.cpp
@@ -23,15 +23,8 @@
 
 #include "hal.h"
 
-#include <cstdint>
-#include <cstddef>
 #include <cstring>
 
-static constexpr uint32_t m4_text_flash_image_offset = 0x20000;
-static constexpr size_t m4_text_size = 0x8000;
-static constexpr uint32_t m4_text_flash_base = LPC_SPIFI_DATA_CACHED_BASE + m4_text_flash_image_offset;
-static constexpr uint32_t m4_text_ram_base = 0x10080000;
-
 /* TODO: OK, this is cool, but how do I put the M4 to sleep so I can switch to
  * a different image? Other than asking the old image to sleep while the M0
  * makes changes?
@@ -39,14 +32,14 @@ static constexpr uint32_t m4_text_ram_base = 0x10080000;
  * I suppose I could force M4MEMMAP to an invalid memory reason which would
  * cause an exception and effectively halt the M4. But that feels gross.
  */
-void m4_init() {
+void m4_init(const portapack::spi_flash::region_t from, void* const to) {
 	/* Initialize M4 code RAM */
-	std::memcpy((void*)m4_text_ram_base, (void*)m4_text_flash_base, m4_text_size);
+	std::memcpy(to, from.base_address(), from.size);
 
 	/* M4 core is assumed to be sleeping with interrupts off, so we can mess
 	 * with its address space and RAM without concern.
 	 */
-	LPC_CREG->M4MEMMAP = m4_text_ram_base;
+	LPC_CREG->M4MEMMAP = reinterpret_cast<uint32_t>(to);
 
 	/* Reset M4 core */
 	LPC_RGU->RESET_CTRL[0] = (1 << 13);
diff --git a/firmware/application/m4_startup.hpp b/firmware/application/m4_startup.hpp
index 00b36e76..b4763156 100644
--- a/firmware/application/m4_startup.hpp
+++ b/firmware/application/m4_startup.hpp
@@ -22,6 +22,10 @@
 #ifndef __M4_STARTUP_H__
 #define __M4_STARTUP_H__
 
-void m4_init();
+#include <cstddef>
+
+#include "spi_image.hpp"
+
+void m4_init(const portapack::spi_flash::region_t from, void* const to);
 
 #endif/*__M4_STARTUP_H__*/
diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index 9cd811be..3af69b99 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -59,6 +59,7 @@ using namespace hackrf::one;
 #include "spi_pp.hpp"
 
 #include "m4_startup.hpp"
+#include "spi_image.hpp"
 
 #include "debug.hpp"
 #include "led.hpp"
@@ -649,7 +650,8 @@ context.message_map[Message::ID::FSKPacket] = [](const Message* const p) {
 };
 
 	m4txevent_interrupt_enable();
-	m4_init();
+
+	m4_init(portapack::spi_flash::baseband, portapack::spi_flash::m4_text_ram_base);
 
 	while(true) {
 		const auto events = event_dispatcher.wait();
diff --git a/firmware/common/spi_image.hpp b/firmware/common/spi_image.hpp
new file mode 100644
index 00000000..afc5053b
--- /dev/null
+++ b/firmware/common/spi_image.hpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * 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.
+ */
+
+#ifndef __SPI_IMAGE_H__
+#define __SPI_IMAGE_H__
+
+#include <cstdint>
+#include <cstddef>
+
+#include "hal.h"
+
+namespace portapack {
+namespace spi_flash {
+
+struct region_t {
+	const size_t offset;
+	const size_t size;
+
+	constexpr const void* base_address() {
+		return reinterpret_cast<void*>(LPC_SPIFI_DATA_CACHED_BASE + offset);
+	}
+};
+
+constexpr region_t bootstrap {
+	.offset = 0x00000,
+	.size = 0x10000,
+};
+
+constexpr region_t hackrf {
+	.offset = 0x10000,
+	.size = 0x8000,
+};
+
+constexpr region_t baseband {
+	.offset = 0x20000,
+	.size = 0x8000,
+};
+
+constexpr region_t application {
+	.offset = 0x40000,
+	.size = 0x40000,
+};
+
+// TODO: Refactor into another header that defines memory regions.
+constexpr void* m4_text_ram_base = reinterpret_cast<void*>(0x10080000);
+
+} /* namespace spi_flash */
+} /* namespace portapack */
+
+#endif/*__SPI_IMAGE_H__*/

From 8af8941687c6441461330873310a592b3e6ef01a Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Thu, 30 Jul 2015 10:01:12 -0700
Subject: [PATCH 03/13] Use from-RAM DFU image, proper HackRF firmware padding.

---
 firmware/Makefile             | 11 ++++++-----
 firmware/common/spi_image.hpp |  2 +-
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/firmware/Makefile b/firmware/Makefile
index b65c470a..54705d1c 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -31,7 +31,7 @@ PAD_BASEBAND=0x20000
 TARGET=portapack-h1-firmware
 
 TARGET_BOOTSTRAP=$(PATH_BOOTSTRAP)/bootstrap
-TARGET_HACKRF_FIRMWARE=hackrf_one_usb_rom_to_ram
+TARGET_HACKRF_FIRMWARE=hackrf_one_usb_ram
 TARGET_APPLICATION=$(PATH_APPLICATION)/build/application
 TARGET_BASEBAND=$(PATH_BASEBAND)/build/baseband
 
@@ -56,15 +56,16 @@ program: $(TARGET).bin
 	sleep 1s
 	hackrf_spiflash -w $(TARGET).bin
 
-$(TARGET).bin: $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin
-	cat $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin >$(TARGET).bin
+$(TARGET).bin: $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_dfu_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin
+	cat $(TARGET_BOOTSTRAP)_pad.bin $(TARGET_HACKRF_FIRMWARE)_dfu_pad.bin $(TARGET_BASEBAND)_pad.bin $(TARGET_APPLICATION).bin >$(TARGET).bin
 
 $(TARGET_BOOTSTRAP)_pad.bin: $(TARGET_BOOTSTRAP).elf
 	$(CP) -O binary --pad-to $(PAD_BOOTSTRAP) $(TARGET_BOOTSTRAP).elf $(TARGET_BOOTSTRAP)_pad.bin
 
-$(TARGET_HACKRF_FIRMWARE)_pad.bin: $(TARGET_HACKRF_FIRMWARE).bin
+$(TARGET_HACKRF_FIRMWARE)_dfu_pad.bin: $(TARGET_HACKRF_FIRMWARE).dfu
 	# TODO: Not confident this is reliable. It certainly won't work on Windows.
-	dd if=/dev/null of=$(TARGET_HACKRF_FIRMWARE)_pad.bin bs=1 count=1 seek=$(PAD_HACKRF_FIRMWARE)
+	cp $(TARGET_HACKRF_FIRMWARE).dfu $(TARGET_HACKRF_FIRMWARE)_dfu_pad.bin
+	dd if=/dev/null of=$(TARGET_HACKRF_FIRMWARE)_dfu_pad.bin bs=1 count=1 seek=$(PAD_HACKRF_FIRMWARE)
 
 $(TARGET_BASEBAND)_pad.bin: $(TARGET_BASEBAND).elf
 	$(CP) -O binary --pad-to $(PAD_BASEBAND) $(TARGET_BASEBAND).elf $(TARGET_BASEBAND)_pad.bin
diff --git a/firmware/common/spi_image.hpp b/firmware/common/spi_image.hpp
index afc5053b..e693d3e9 100644
--- a/firmware/common/spi_image.hpp
+++ b/firmware/common/spi_image.hpp
@@ -45,7 +45,7 @@ constexpr region_t bootstrap {
 };
 
 constexpr region_t hackrf {
-	.offset = 0x10000,
+	.offset = 0x10010,	// Image starts at 0x10 into .dfu file.
 	.size = 0x8000,
 };
 

From 1d16cd8aac37a8dda72c3e7ca8af49b5a9fa2f97 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 13:42:27 -0700
Subject: [PATCH 04/13] Consolidate peripheral declarations.

---
 firmware/application/Makefile           |   1 +
 firmware/application/main.cpp           | 146 +-----------------
 firmware/application/portapack.cpp      | 187 ++++++++++++++++++++++++
 firmware/application/portapack.hpp      |  45 ++++++
 firmware/application/radio.cpp          |   5 +-
 firmware/application/receiver_model.cpp |   9 +-
 firmware/application/ui_navigation.cpp  |   2 +-
 firmware/application/ui_receiver.cpp    |   7 +-
 8 files changed, 244 insertions(+), 158 deletions(-)
 create mode 100644 firmware/application/portapack.cpp
 create mode 100644 firmware/application/portapack.hpp

diff --git a/firmware/application/Makefile b/firmware/application/Makefile
index ba3fd78b..f3e7941a 100755
--- a/firmware/application/Makefile
+++ b/firmware/application/Makefile
@@ -124,6 +124,7 @@ CPPSRC = main.cpp \
          event.cpp \
          message_queue.cpp \
          hackrf_hal.cpp \
+         portapack.cpp \
          portapack_shared_memory.cpp \
          portapack_io.cpp \
          i2c_pp.cpp \
diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index 3af69b99..d74991b6 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -22,42 +22,27 @@
 #include "ch.h"
 #include "test.h"
 
-#include "hackrf_hal.hpp"
-#include "hackrf_gpio.hpp"
-using namespace hackrf::one;
+#include "lpc43xx_cpp.hpp"
+using namespace lpc43xx;
 
+#include "portapack.hpp"
 #include "portapack_shared_memory.hpp"
-#include "portapack_hal.hpp"
-#include "portapack_io.hpp"
 
 #include "cpld_update.hpp"
 
 #include "message_queue.hpp"
 
-#include "si5351.hpp"
-#include "clock_manager.hpp"
-
-#include "wm8731.hpp"
-#include "radio.hpp"
-#include "touch.hpp"
-#include "touch_adc.hpp"
-
 #include "ui.hpp"
 #include "ui_widget.hpp"
 #include "ui_painter.hpp"
 #include "ui_navigation.hpp"
 
-#include "receiver_model.hpp"
-
 #include "irq_ipc.hpp"
 #include "irq_lcd_frame.hpp"
 #include "irq_controls.hpp"
 
 #include "event.hpp"
 
-#include "i2c_pp.hpp"
-#include "spi_pp.hpp"
-
 #include "m4_startup.hpp"
 #include "spi_image.hpp"
 
@@ -68,12 +53,6 @@ using namespace hackrf::one;
 
 #include <string.h>
 
-I2C i2c0(&I2CD0);
-SPI ssp0(&SPID1);
-SPI ssp1(&SPID2);
-
-wolfson::wm8731::WM8731 audio_codec { i2c0, portapack::wm8731_i2c_address };
-
 /* From ChibiOS crt0.c:
  * Two stacks available for Cortex-M, main stack or process stack.
  *
@@ -147,112 +126,6 @@ static spi_bus_t ssp0 = {
  *		_default_exit() (default is infinite loop)
  */
 
-si5351::Si5351 clock_generator {
-	i2c0, si5351_i2c_address
-};
-
-ClockManager clock_manager {
-	i2c0, clock_generator
-};
-
-ReceiverModel receiver_model {
-	clock_manager
-};
-
-class Power {
-public:
-	void init() {
-		/* VAA powers:
-		 * MAX5864 analog section.
-		 * MAX2837 registers and other functions.
-		 * RFFC5072 analog section.
-		 *
-		 * Beware that power applied to pins of the MAX2837 may
-		 * show up on VAA and start powering other components on the
-		 * VAA net. So turn on VAA before driving pins from MCU to
-		 * MAX2837.
-		 */
-		/* Turn on VAA */
-		gpio_vaa_disable.clear();
-		gpio_vaa_disable.output();
-
-		/* 1V8 powers CPLD internals.
-		 */
-		/* Turn on 1V8 */
-		gpio_1v8_enable.set();
-		gpio_1v8_enable.output();
-
-		/* Set VREGMODE for switching regulator on HackRF One */
-		gpio_vregmode.set();
-		gpio_vregmode.output();
-	}
-
-private:
-};
-
-static Power power;
-
-static void init() {
-	for(const auto& pin : pins) {
-		pin.init();
-	}
-
-	/* Configure other pins */
-	LPC_SCU->SFSI2C0 =
-		  (1U <<  3)
-		| (1U << 11)
-		;
-
-	power.init();
-
-	gpio_max5864_select.set();
-	gpio_max5864_select.output();
-
-	gpio_max2837_select.set();
-	gpio_max2837_select.output();
-
-	led_usb.setup();
-	led_rx.setup();
-	led_tx.setup();
-
-	clock_manager.init();
-	clock_manager.run_at_full_speed();
-
-	clock_manager.start_audio_pll();
-	audio_codec.init();
-
-	clock_manager.enable_first_if_clock();
-	clock_manager.enable_second_if_clock();
-	clock_manager.enable_codec_clocks();
-	radio::init();
-
-	touch::adc::init();
-}
-
-extern "C" {
-
-void __late_init(void) {
-
-	reset();
-
-	/*
-	 * System initializations.
-	 * - HAL initialization, this also initializes the configured device drivers
-	 *   and performs the board-specific initializations.
-	 * - Kernel initialization, the main() function becomes a thread and the
-	 *   RTOS is active.
-	 */
-	halInit();
-
-	/* After this call, scheduler, systick, heap, etc. are available. */
-	/* By doing chSysInit() here, it runs before C++ constructors, which may
-	 * require the heap.
-	 */
-	chSysInit();
-}
-
-}
-
 extern "C" {
 
 CH_IRQ_HANDLER(RTC_IRQHandler) {
@@ -601,18 +474,8 @@ message_handlers[Message::ID::TestResults] = [&system_view](const Message* const
 };
 */
 
-portapack::IO portapack::io {
-	portapack::gpio_dir,
-	portapack::gpio_lcd_rd,
-	portapack::gpio_lcd_wr,
-	portapack::gpio_io_stbx,
-	portapack::gpio_addr,
-	portapack::gpio_lcd_te,
-	portapack::gpio_unused,
-};
-
 int main(void) {
-	init();
+	portapack::init();
 
 	if( !cpld_update_if_necessary() ) {
 		chSysHalt();
@@ -646,7 +509,6 @@ int main(void) {
 context.message_map[Message::ID::FSKPacket] = [](const Message* const p) {
 	const auto message = static_cast<const FSKPacketMessage*>(p);
 	(void)message;
-	led_usb.toggle();
 };
 
 	m4txevent_interrupt_enable();
diff --git a/firmware/application/portapack.cpp b/firmware/application/portapack.cpp
new file mode 100644
index 00000000..894b1f0a
--- /dev/null
+++ b/firmware/application/portapack.cpp
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * 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 "portapack.hpp"
+#include "portapack_hal.hpp"
+
+#include "hackrf_hal.hpp"
+#include "hackrf_gpio.hpp"
+using namespace hackrf::one;
+
+#include "si5351.hpp"
+#include "clock_manager.hpp"
+
+#include "i2c_pp.hpp"
+
+#include "touch_adc.hpp"
+
+#include "m4_startup.hpp"
+#include "spi_image.hpp"
+
+namespace portapack {
+
+portapack::IO io {
+	portapack::gpio_dir,
+	portapack::gpio_lcd_rd,
+	portapack::gpio_lcd_wr,
+	portapack::gpio_io_stbx,
+	portapack::gpio_addr,
+	portapack::gpio_lcd_te,
+	portapack::gpio_unused,
+};
+
+I2C i2c0(&I2CD0);
+SPI ssp0(&SPID1);
+SPI ssp1(&SPID2);
+
+wolfson::wm8731::WM8731 audio_codec { i2c0, portapack::wm8731_i2c_address };
+
+si5351::Si5351 clock_generator {
+	i2c0, hackrf::one::si5351_i2c_address
+};
+
+ClockManager clock_manager {
+	i2c0, clock_generator
+};
+
+ReceiverModel receiver_model {
+	clock_manager
+};
+
+class Power {
+public:
+	void init() {
+		/* VAA powers:
+		 * MAX5864 analog section.
+		 * MAX2837 registers and other functions.
+		 * RFFC5072 analog section.
+		 *
+		 * Beware that power applied to pins of the MAX2837 may
+		 * show up on VAA and start powering other components on the
+		 * VAA net. So turn on VAA before driving pins from MCU to
+		 * MAX2837.
+		 */
+		/* Turn on VAA */
+		gpio_vaa_disable.clear();
+		gpio_vaa_disable.output();
+
+		/* 1V8 powers CPLD internals.
+		 */
+		/* Turn on 1V8 */
+		gpio_1v8_enable.set();
+		gpio_1v8_enable.output();
+
+		/* Set VREGMODE for switching regulator on HackRF One */
+		gpio_vregmode.set();
+		gpio_vregmode.output();
+	}
+
+	void shutdown() {
+		gpio_1v8_enable.clear();
+		gpio_vaa_disable.set();
+	}
+
+private:
+};
+
+static Power power;
+
+void init() {
+	for(const auto& pin : pins) {
+		pin.init();
+	}
+
+	/* Configure other pins */
+	LPC_SCU->SFSI2C0 =
+		  (1U <<  3)
+		| (1U << 11)
+		;
+
+	power.init();
+
+	gpio_max5864_select.set();
+	gpio_max5864_select.output();
+
+	gpio_max2837_select.set();
+	gpio_max2837_select.output();
+
+	led_usb.setup();
+	led_rx.setup();
+	led_tx.setup();
+
+	clock_manager.init();
+	clock_manager.run_at_full_speed();
+
+	clock_manager.start_audio_pll();
+	audio_codec.init();
+
+	clock_manager.enable_first_if_clock();
+	clock_manager.enable_second_if_clock();
+	clock_manager.enable_codec_clocks();
+	radio::init();
+
+	touch::adc::init();
+}
+
+void shutdown() {
+	sdcStop(&SDCD1);
+
+	radio::disable();
+	audio_codec.reset();
+	clock_manager.shutdown();
+
+	power.shutdown();
+	// TODO: Wait a bit for supplies to discharge?
+
+	chSysDisable();
+	hackrf::one::reset();
+	m4_init(portapack::spi_flash::hackrf, reinterpret_cast<void*>(0x10000000));
+
+	while(true) {
+		__WFE();
+	}
+}
+
+extern "C" {
+
+void __late_init(void) {
+
+	reset();
+
+	/*
+	 * System initializations.
+	 * - HAL initialization, this also initializes the configured device drivers
+	 *   and performs the board-specific initializations.
+	 * - Kernel initialization, the main() function becomes a thread and the
+	 *   RTOS is active.
+	 */
+	halInit();
+
+	/* After this call, scheduler, systick, heap, etc. are available. */
+	/* By doing chSysInit() here, it runs before C++ constructors, which may
+	 * require the heap.
+	 */
+	chSysInit();
+}
+
+}
+
+} /* namespace portapack */
diff --git a/firmware/application/portapack.hpp b/firmware/application/portapack.hpp
new file mode 100644
index 00000000..cf885894
--- /dev/null
+++ b/firmware/application/portapack.hpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * 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 "portapack_io.hpp"
+
+#include "receiver_model.hpp"
+
+#include "spi_pp.hpp"
+#include "wm8731.hpp"
+
+#include "radio.hpp"
+
+namespace portapack {
+
+extern portapack::IO io;
+
+extern SPI ssp0;
+extern SPI ssp1;
+
+extern wolfson::wm8731::WM8731 audio_codec;
+
+extern ReceiverModel receiver_model;
+
+void init();
+void shutdown();
+
+} /* namespace portapack */
diff --git a/firmware/application/radio.cpp b/firmware/application/radio.cpp
index b493f217..f404f76a 100644
--- a/firmware/application/radio.cpp
+++ b/firmware/application/radio.cpp
@@ -36,8 +36,7 @@
 #include "hackrf_gpio.hpp"
 using namespace hackrf::one;
 
-#include "spi_pp.hpp"
-extern SPI ssp1;
+#include "portapack.hpp"
 
 namespace radio {
 
@@ -75,7 +74,7 @@ static constexpr SPIConfig ssp_config_max5864 = {
 	.cpsr = ssp1_cpsr,
 };
 
-static spi::arbiter::Arbiter ssp1_arbiter(ssp1);
+static spi::arbiter::Arbiter ssp1_arbiter(portapack::ssp1);
 
 static spi::arbiter::Target ssp1_target_max2837 {
 	ssp1_arbiter,
diff --git a/firmware/application/receiver_model.cpp b/firmware/application/receiver_model.cpp
index 6c642302..51e8c27e 100644
--- a/firmware/application/receiver_model.cpp
+++ b/firmware/application/receiver_model.cpp
@@ -22,13 +22,8 @@
 #include "receiver_model.hpp"
 
 #include "portapack_shared_memory.hpp"
-#include "radio.hpp"
-#include "wm8731.hpp"
-
-// TODO: Nasty. Put this in an #include somewhere, or a shared system state
-// object?
-
-extern wolfson::wm8731::WM8731 audio_codec;
+#include "portapack.hpp"
+using namespace portapack;
 
 rf::Frequency ReceiverModel::tuning_frequency() const {
 	return tuning_frequency_;
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 68e92833..16a6e45d 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -27,7 +27,7 @@
 #include "ui_debug.hpp"
 #include "ui_receiver.hpp"
 
-extern ReceiverModel receiver_model;
+#include "portapack.hpp"
 
 namespace ui {
 
diff --git a/firmware/application/ui_receiver.cpp b/firmware/application/ui_receiver.cpp
index 9ef66cac..beb4a2f6 100644
--- a/firmware/application/ui_receiver.cpp
+++ b/firmware/application/ui_receiver.cpp
@@ -21,11 +21,8 @@
 
 #include "ui_receiver.hpp"
 
-// TODO: Nasty. Put this in an #include somewhere, or a shared system state
-// object?
-
-#include "wm8731.hpp"
-extern wolfson::wm8731::WM8731 audio_codec;
+#include "portapack.hpp"
+using namespace portapack;
 
 namespace ui {
 

From c025a2bba2d66b231f67e294dd7aacb39a8d81b7 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 13:43:58 -0700
Subject: [PATCH 05/13] Code to shut down ClockManager-controlled devices.

---
 firmware/application/clock_manager.cpp | 5 +++++
 firmware/application/clock_manager.hpp | 1 +
 2 files changed, 6 insertions(+)

diff --git a/firmware/application/clock_manager.cpp b/firmware/application/clock_manager.cpp
index 0b4e577d..c7323978 100644
--- a/firmware/application/clock_manager.cpp
+++ b/firmware/application/clock_manager.cpp
@@ -296,6 +296,11 @@ void ClockManager::init() {
 	clock_generator.reset_plls();
 }
 
+void ClockManager::shutdown() {
+	run_from_irc();
+	clock_generator.reset();
+}
+
 void ClockManager::run_from_irc() {
 	change_clock_configuration(cgu::CLK_SEL::IRC);
 }
diff --git a/firmware/application/clock_manager.hpp b/firmware/application/clock_manager.hpp
index d1d56830..b9956342 100644
--- a/firmware/application/clock_manager.hpp
+++ b/firmware/application/clock_manager.hpp
@@ -43,6 +43,7 @@ public:
 	}
 
 	void init();
+	void shutdown();
 
 	void run_from_irc();
 	void run_at_full_speed();

From bfc73a6675dfcde3bf85ce99a7182991cab8ed40 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 13:44:52 -0700
Subject: [PATCH 06/13] Move update_peripheral_clocks

Incorrect order of operations would hang execution if switching to IRC.
---
 firmware/application/clock_manager.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/firmware/application/clock_manager.cpp b/firmware/application/clock_manager.cpp
index c7323978..e674b067 100644
--- a/firmware/application/clock_manager.cpp
+++ b/firmware/application/clock_manager.cpp
@@ -382,14 +382,14 @@ void ClockManager::change_clock_configuration(const cgu::CLK_SEL clk_sel) {
 
 	set_m4_clock_to_irc();
 
+	update_peripheral_clocks(clk_sel);
+
 	if( clk_sel == cgu::CLK_SEL::PLL1 ) {
 		set_m4_clock_to_pll1();
 	} else {
 		power_down_pll1();
 	}
 
-	update_peripheral_clocks(clk_sel);
-
 	start_peripherals(clk_sel);
 
 	if( clk_sel != cgu::CLK_SEL::XTAL ) {

From 8797aa97580bb3249322132782ab18cc33cd707c Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 13:45:52 -0700
Subject: [PATCH 07/13] Stop audio PLL if shutting down GP_CLKIN clock source.

---
 firmware/application/clock_manager.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/firmware/application/clock_manager.cpp b/firmware/application/clock_manager.cpp
index e674b067..e6c4d242 100644
--- a/firmware/application/clock_manager.cpp
+++ b/firmware/application/clock_manager.cpp
@@ -398,6 +398,7 @@ void ClockManager::change_clock_configuration(const cgu::CLK_SEL clk_sel) {
 
 	/* If not using PLL1, disable clock feeding GP_CLKIN */
 	if( clk_sel != cgu::CLK_SEL::PLL1 ) {
+		stop_audio_pll();
 		disable_gp_clkin_source();
 	}
 }

From fecbb7205e5dbb5fb39cfc4fff03dd6172feeda4 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 13:46:15 -0700
Subject: [PATCH 08/13] Menu item to launch HackRF firmware.

---
 firmware/application/ui_navigation.cpp | 28 ++++++++++++++++++++++++--
 firmware/application/ui_navigation.hpp | 23 +++++++++++++++++++++
 2 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 16a6e45d..ca70a801 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -97,13 +97,14 @@ void NavigationView::focus() {
 /* SystemMenuView ********************************************************/
 
 SystemMenuView::SystemMenuView(NavigationView& nav) {
-	add_items<6>({ {
-		{ "Receiver", [&nav](){ nav.push(new ReceiverView       { nav, receiver_model }); } },
+	add_items<7>({ {
+		{ "Receiver", [&nav](){ nav.push(new ReceiverView       { nav, portapack::receiver_model }); } },
 		{ "Capture",  [&nav](){ nav.push(new NotImplementedView { nav }); } },
 		{ "Analyze",  [&nav](){ nav.push(new NotImplementedView { nav }); } },
 		{ "Setup",    [&nav](){ nav.push(new SetupMenuView      { nav }); } },
 		{ "About",    [&nav](){ nav.push(new AboutView          { nav }); } },
 		{ "Debug",    [&nav](){ nav.push(new DebugMenuView      { nav }); } },
+		{ "HackRF",   [&nav](){ nav.push(new HackRFFirmwareView { nav }); } },
 	} });
 }
 
@@ -146,6 +147,29 @@ Context& SystemView::context() const {
 	return context_;
 }
 
+/* HackRFFirmwareView ****************************************************/
+
+HackRFFirmwareView::HackRFFirmwareView(NavigationView& nav) {
+	button_yes.on_select = [&nav](Button&){
+		// TODO: Clear screen?
+		portapack::shutdown();
+	};
+
+	button_no.on_select = [&nav](Button&){
+		nav.pop();
+	};
+
+	add_children({ {
+		&text_title,
+		&button_yes,
+		&button_no,
+	} });
+}
+
+void HackRFFirmwareView::focus() {
+	button_no.focus();
+}
+
 /* NotImplementedView ****************************************************/
 
 NotImplementedView::NotImplementedView(NavigationView& nav) {
diff --git a/firmware/application/ui_navigation.hpp b/firmware/application/ui_navigation.hpp
index c0cadbfc..d2963c6f 100644
--- a/firmware/application/ui_navigation.hpp
+++ b/firmware/application/ui_navigation.hpp
@@ -107,6 +107,29 @@ private:
 	Context& context_;
 };
 
+class HackRFFirmwareView : public View {
+public:
+	HackRFFirmwareView(NavigationView& nav);
+
+	void focus() override;
+
+private:
+	Text text_title {
+		{ 5 * 8, 7 * 16, 19 * 8, 16 },
+		"Execute HackRF Firmware?"
+	};
+
+	Button button_yes {
+		{ 4 * 8, 13 * 16, 8 * 8, 24 },
+		"Yes",
+	};
+
+	Button button_no {
+		{ 18 * 8, 13 * 16, 8 * 8, 24 },
+		"No",
+	};
+};
+
 class NotImplementedView : public View {
 public:
 	NotImplementedView(NavigationView& nav);

From 65d5f68bfbacbd8a73c3d9b0537d1a14842d3cbd Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 14:31:51 -0700
Subject: [PATCH 09/13] Move LCD display object to portapack namespace.

Globals are bad... Except in embedded development!
---
 firmware/application/main.cpp        |  4 ++--
 firmware/application/portapack.cpp   |  2 ++
 firmware/application/portapack.hpp   |  3 +++
 firmware/application/ui_console.cpp  |  3 +++
 firmware/application/ui_console.hpp  |  9 ++-------
 firmware/application/ui_spectrum.hpp |  9 +++++----
 firmware/common/ui_painter.cpp       | 13 ++++++++-----
 firmware/common/ui_painter.hpp       | 10 +---------
 firmware/common/ui_widget.hpp        |  2 --
 9 files changed, 26 insertions(+), 29 deletions(-)

diff --git a/firmware/application/main.cpp b/firmware/application/main.cpp
index d74991b6..0a15dcc3 100755
--- a/firmware/application/main.cpp
+++ b/firmware/application/main.cpp
@@ -486,7 +486,7 @@ int main(void) {
 
 	portapack::io.init();
 	ui::Context context;
-	context.display.init();
+	portapack::display.init();
 
 	sdcStart(&SDCD1, nullptr);
 
@@ -503,7 +503,7 @@ int main(void) {
 		context,
 		{ 0, 0, 240, 320 }
 	};
-	ui::Painter painter { context.display };
+	ui::Painter painter;
 	EventDispatcher event_dispatcher { &system_view, painter, context };
 
 context.message_map[Message::ID::FSKPacket] = [](const Message* const p) {
diff --git a/firmware/application/portapack.cpp b/firmware/application/portapack.cpp
index 894b1f0a..99c09162 100644
--- a/firmware/application/portapack.cpp
+++ b/firmware/application/portapack.cpp
@@ -48,6 +48,8 @@ portapack::IO io {
 	portapack::gpio_unused,
 };
 
+lcd::ILI9341 display;
+
 I2C i2c0(&I2CD0);
 SPI ssp0(&SPID1);
 SPI ssp1(&SPID2);
diff --git a/firmware/application/portapack.hpp b/firmware/application/portapack.hpp
index cf885894..939442de 100644
--- a/firmware/application/portapack.hpp
+++ b/firmware/application/portapack.hpp
@@ -25,6 +25,7 @@
 
 #include "spi_pp.hpp"
 #include "wm8731.hpp"
+#include "lcd_ili9341.hpp"
 
 #include "radio.hpp"
 
@@ -32,6 +33,8 @@ namespace portapack {
 
 extern portapack::IO io;
 
+extern lcd::ILI9341 display;
+
 extern SPI ssp0;
 extern SPI ssp1;
 
diff --git a/firmware/application/ui_console.cpp b/firmware/application/ui_console.cpp
index 3c44c5c1..2fe99364 100644
--- a/firmware/application/ui_console.cpp
+++ b/firmware/application/ui_console.cpp
@@ -21,6 +21,9 @@
 
 #include "ui_console.hpp"
 
+#include "portapack.hpp"
+using namespace portapack;
+
 namespace ui {
 
 void Console::write(const std::string message) {
diff --git a/firmware/application/ui_console.hpp b/firmware/application/ui_console.hpp
index 53ea3b0f..5722e858 100644
--- a/firmware/application/ui_console.hpp
+++ b/firmware/application/ui_console.hpp
@@ -26,8 +26,6 @@
 #include "ui_painter.hpp"
 #include "ui_widget.hpp"
 
-#include "lcd_ili9341.hpp"
-
 #include <string>
 
 namespace ui {
@@ -35,10 +33,8 @@ namespace ui {
 class Console : public Widget {
 public:
 	constexpr Console(
-		const Rect parent_rect,
-		lcd::ILI9341& display
-	) : Widget { parent_rect },
-		display(display)
+		const Rect parent_rect
+	) : Widget { parent_rect }
 	{
 	}
 
@@ -52,7 +48,6 @@ private:
 	static constexpr Color foreground { Color::white() };
 
 	Point pos { 0, 0 };
-	lcd::ILI9341& display;
 
 	void crlf();
 };
diff --git a/firmware/application/ui_spectrum.hpp b/firmware/application/ui_spectrum.hpp
index bbc4821e..029c0c5c 100644
--- a/firmware/application/ui_spectrum.hpp
+++ b/firmware/application/ui_spectrum.hpp
@@ -26,7 +26,9 @@
 #include "ui_widget.hpp"
 #include "spectrum_color_lut.hpp"
 
-#include "lcd_ili9341.hpp"
+#include "portapack.hpp"
+using namespace portapack;
+
 #include "message.hpp"
 
 #include <cstdint>
@@ -180,14 +182,14 @@ class WaterfallView : public Widget {
 public:
 	void on_show() override {
 		const auto screen_r = screen_rect();
-		context().display.scroll_set_area(screen_r.top(), screen_r.bottom());
+		display.scroll_set_area(screen_r.top(), screen_r.bottom());
 	}
 
 	void on_hide() override {
 		/* TODO: Clear region to eliminate brief flash of content at un-shifted
 		 * position?
 		 */
-		context().display.scroll_disable();
+		display.scroll_disable();
 	}
 
 	void paint(Painter& painter) override {
@@ -212,7 +214,6 @@ public:
 			pixel_row[i] = pixel_color;
 		}
 
-		auto& display = context().display;
 		const auto draw_y = display.scroll(1);
 
 		display.draw_pixels(
diff --git a/firmware/common/ui_painter.cpp b/firmware/common/ui_painter.cpp
index 39874f1c..ef246e5f 100644
--- a/firmware/common/ui_painter.cpp
+++ b/firmware/common/ui_painter.cpp
@@ -21,6 +21,9 @@
 
 #include "ui_painter.hpp"
 
+#include "portapack.hpp"
+using namespace portapack;
+
 namespace ui {
 
 Style Style::invert() const {
@@ -33,7 +36,7 @@ Style Style::invert() const {
 
 size_t Painter::draw_char(const Point p, const Style& style, const char c) {
 	const auto glyph = style.font.glyph(c);
-	display_.draw_glyph(p, glyph, style.foreground, style.background);
+	display.draw_glyph(p, glyph, style.foreground, style.background);
 	return glyph.advance().x;
 }
 
@@ -41,7 +44,7 @@ size_t Painter::draw_string(Point p, const Style& style, const std::string text)
 	size_t width = 0;
 	for(const auto c : text) {
 		const auto glyph = style.font.glyph(c);
-		display_.draw_glyph(p, glyph, style.foreground, style.background);
+		display.draw_glyph(p, glyph, style.foreground, style.background);
 		const auto advance = glyph.advance();
 		p += advance;
 		width += advance.x;
@@ -50,11 +53,11 @@ size_t Painter::draw_string(Point p, const Style& style, const std::string text)
 }
 
 void Painter::draw_hline(Point p, size_t width, const Color c) {
-	display_.fill_rectangle({ p, { static_cast<Dim>(width), 1 } }, c);
+	display.fill_rectangle({ p, { static_cast<Dim>(width), 1 } }, c);
 }
 
 void Painter::draw_vline(Point p, size_t height, const Color c) {
-	display_.fill_rectangle({ p, { 1, static_cast<Dim>(height) } }, c);
+	display.fill_rectangle({ p, { 1, static_cast<Dim>(height) } }, c);
 }
 
 void Painter::draw_rectangle(const Rect r, const Color c) {
@@ -65,7 +68,7 @@ void Painter::draw_rectangle(const Rect r, const Color c) {
 }
 
 void Painter::fill_rectangle(const Rect r, const Color c) {
-	display_.fill_rectangle(r, c);
+	display.fill_rectangle(r, c);
 }
 
 } /* namespace ui */
diff --git a/firmware/common/ui_painter.hpp b/firmware/common/ui_painter.hpp
index c10b2415..542f3cab 100644
--- a/firmware/common/ui_painter.hpp
+++ b/firmware/common/ui_painter.hpp
@@ -25,8 +25,6 @@
 #include "ui.hpp"
 #include "ui_text.hpp"
 
-#include "lcd_ili9341.hpp"
-
 #include <string>
 
 namespace ui {
@@ -41,11 +39,7 @@ struct Style {
 
 class Painter {
 public:
-	Painter(
-		lcd::ILI9341& display
-	) : display_(display)
-	{
-	}
+	Painter() { };
 
 	Painter(const Painter&) = delete;
 	Painter(Painter&&) = delete;
@@ -58,8 +52,6 @@ public:
 	void fill_rectangle(const Rect r, const Color c);
 
 private:
-	lcd::ILI9341& display_;
-
 	void draw_hline(Point p, size_t width, const Color c);
 	void draw_vline(Point p, size_t height, const Color c);
 };
diff --git a/firmware/common/ui_widget.hpp b/firmware/common/ui_widget.hpp
index 7ab54597..797083cf 100644
--- a/firmware/common/ui_widget.hpp
+++ b/firmware/common/ui_widget.hpp
@@ -29,7 +29,6 @@
 
 #include "utility.hpp"
 
-#include "lcd_ili9341.hpp"
 #include "message.hpp"
 
 #include <memory>
@@ -48,7 +47,6 @@ std::string to_string_hex(const uint32_t n, const int32_t l = 0);
 
 struct Context {
 	FocusManager focus_manager;
-	lcd::ILI9341 display;
 	MessageHandlerMap message_map;
 };
 

From b5802aadda456cc3ada0f24d9515f2fb6b5af9fa Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 14:32:22 -0700
Subject: [PATCH 10/13] Clean up HackRF firmware mode message.

---
 firmware/application/ui_navigation.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/firmware/application/ui_navigation.hpp b/firmware/application/ui_navigation.hpp
index d2963c6f..76d56988 100644
--- a/firmware/application/ui_navigation.hpp
+++ b/firmware/application/ui_navigation.hpp
@@ -115,8 +115,8 @@ public:
 
 private:
 	Text text_title {
-		{ 5 * 8, 7 * 16, 19 * 8, 16 },
-		"Execute HackRF Firmware?"
+		{ 6 * 8, 7 * 16, 19 * 8, 16 },
+		"Enter HackRF Mode?"
 	};
 
 	Button button_yes {

From 98a1eb5c1ce8ae20a42e7dc64cbfda2eb2dabebd Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 14:36:27 -0700
Subject: [PATCH 11/13] Add LCD shutdown method.

Resets LCD controller, turns off backlight.
---
 firmware/common/lcd_ili9341.cpp | 5 +++++
 firmware/common/lcd_ili9341.hpp | 1 +
 2 files changed, 6 insertions(+)

diff --git a/firmware/common/lcd_ili9341.cpp b/firmware/common/lcd_ili9341.cpp
index 0da6171b..96b3da0d 100644
--- a/firmware/common/lcd_ili9341.cpp
+++ b/firmware/common/lcd_ili9341.cpp
@@ -225,6 +225,11 @@ void ILI9341::init() {
 	io.lcd_backlight(1);
 }
 
+void ILI9341::shutdown() {
+	io.lcd_backlight(0);
+	lcd_reset();
+}
+
 void ILI9341::fill_rectangle(ui::Rect r, const ui::Color c) {
 	const auto r_clipped = r.intersect(screen_rect());
 	if( !r_clipped.is_empty() ) {
diff --git a/firmware/common/lcd_ili9341.hpp b/firmware/common/lcd_ili9341.hpp
index 3a4c7cef..2a0d6cd6 100644
--- a/firmware/common/lcd_ili9341.hpp
+++ b/firmware/common/lcd_ili9341.hpp
@@ -42,6 +42,7 @@ public:
 	void operator=(const ILI9341&) = delete;
 
 	void init();
+	void shutdown();
 
 	void fill_rectangle(ui::Rect r, const ui::Color c);
 	void fill_circle(

From 96babc3e840ff968deb7bd3604327a7bf7f3e528 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 14:40:05 -0700
Subject: [PATCH 12/13] Shut down LCD during PortaPack shutdown.

---
 firmware/application/portapack.cpp     | 2 ++
 firmware/application/ui_navigation.cpp | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/firmware/application/portapack.cpp b/firmware/application/portapack.cpp
index 99c09162..cacc4f61 100644
--- a/firmware/application/portapack.cpp
+++ b/firmware/application/portapack.cpp
@@ -146,6 +146,8 @@ void init() {
 void shutdown() {
 	sdcStop(&SDCD1);
 
+	display.shutdown();
+	
 	radio::disable();
 	audio_codec.reset();
 	clock_manager.shutdown();
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index ca70a801..56c97283 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -151,7 +151,6 @@ Context& SystemView::context() const {
 
 HackRFFirmwareView::HackRFFirmwareView(NavigationView& nav) {
 	button_yes.on_select = [&nav](Button&){
-		// TODO: Clear screen?
 		portapack::shutdown();
 	};
 

From e6a3cba14ee04fe11ac4d95a7b057841735868ff Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Sat, 1 Aug 2015 14:43:48 -0700
Subject: [PATCH 13/13] Move HackRF firmware launch out of portapack::shutdown

---
 firmware/application/portapack.cpp     |  8 --------
 firmware/application/ui_navigation.cpp | 13 +++++++++++--
 2 files changed, 11 insertions(+), 10 deletions(-)

diff --git a/firmware/application/portapack.cpp b/firmware/application/portapack.cpp
index cacc4f61..9f4c361c 100644
--- a/firmware/application/portapack.cpp
+++ b/firmware/application/portapack.cpp
@@ -33,9 +33,6 @@ using namespace hackrf::one;
 
 #include "touch_adc.hpp"
 
-#include "m4_startup.hpp"
-#include "spi_image.hpp"
-
 namespace portapack {
 
 portapack::IO io {
@@ -157,11 +154,6 @@ void shutdown() {
 
 	chSysDisable();
 	hackrf::one::reset();
-	m4_init(portapack::spi_flash::hackrf, reinterpret_cast<void*>(0x10000000));
-
-	while(true) {
-		__WFE();
-	}
 }
 
 extern "C" {
diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 56c97283..21716ead 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -28,6 +28,9 @@
 #include "ui_receiver.hpp"
 
 #include "portapack.hpp"
+#include "m4_startup.hpp"
+#include "spi_image.hpp"
+using namespace portapack;
 
 namespace ui {
 
@@ -98,7 +101,7 @@ void NavigationView::focus() {
 
 SystemMenuView::SystemMenuView(NavigationView& nav) {
 	add_items<7>({ {
-		{ "Receiver", [&nav](){ nav.push(new ReceiverView       { nav, portapack::receiver_model }); } },
+		{ "Receiver", [&nav](){ nav.push(new ReceiverView       { nav, receiver_model }); } },
 		{ "Capture",  [&nav](){ nav.push(new NotImplementedView { nav }); } },
 		{ "Analyze",  [&nav](){ nav.push(new NotImplementedView { nav }); } },
 		{ "Setup",    [&nav](){ nav.push(new SetupMenuView      { nav }); } },
@@ -151,7 +154,13 @@ Context& SystemView::context() const {
 
 HackRFFirmwareView::HackRFFirmwareView(NavigationView& nav) {
 	button_yes.on_select = [&nav](Button&){
-		portapack::shutdown();
+		shutdown();
+
+		m4_init(spi_flash::hackrf, reinterpret_cast<void*>(0x10000000));
+
+		while(true) {
+			__WFE();
+		}
 	};
 
 	button_no.on_select = [&nav](Button&){