README
======

This README discusses issues unique to NuttX configurations for the
ViewTool STM32F103/F107 V1.2 board. This board may be fitted with either

- STM32F107VCT6, or
- STM32F103VCT6

The board is vary modular with connectors for a variety of peripherals.
Features on the base board include:

- User and Wake-Up Keys
- LEDs

See http://www.viewtool.com/ for further information.

Contents
========

o User and Wake-Up keys
o LEDs
o Serial Console
- Console Configuration
- J5 - USART1
- PL-2013 USB-to-Serial Interface
- RS-232 Module
o USB Interface
o microSD Card Interface
o ViewTool DP83848 Ethernet Module
o Freescale MPL115A barometer sensor
o LCD/Touchscreen Interface
o Toolchains
- NOTE about Windows native toolchains
o Configurations
- Information Common to All Configurations
- Configuration Sub-directories

User and Wake-Up keys
=====================

All pulled high and will be sensed low when depressed.

SW2 PC11 Needs J42 closed
SW3 PC12 Needs J43 closed
SW4 PA0 Needs J44 closed

LEDs
====

There are four LEDs on the ViewTool STM32F103/F107 board that can be controlled
by software: LED1 through LED4. All pulled high and can be illuminated by
driving the output to low

LED1 PA6
LED2 PA7
LED3 PB12
LED4 PB13

These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
defined. In that case, the usage by the board port is defined in
include/board.h and src/stm32_leds.c. The LEDs are used to encode OS-related
events as follows:

SYMBOL Meaning LED state
LED1 LED2 LED3 LED4
----------------- ----------------------- ---- ---- ---- ----
LED_STARTED NuttX has been started ON OFF OFF OFF
LED_HEAPALLOCATE Heap has been allocated OFF ON OFF OFF
LED_IRQSENABLED Interrupts enabled ON ON OFF OFF
LED_STACKCREATED Idle stack created OFF OFF ON OFF
LED_INIRQ In an interrupt N/C N/C N/C Soft glow
LED_SIGNAL In a signal handler N/C N/C N/C Soft glow
LED_ASSERTION An assertion failed N/C N/C N/C Soft glow
LED_PANIC The system has crashed N/C N/C N/C 2Hz Flashing
LED_IDLE MCU is is sleep mode Not used

After booting, LED1-3 are not longer used by the system and can be used for
other purposes by the application (Of course, all LEDs are available to the
application if CONFIG_ARCH_LEDS is not defined.

Serial Console
==============

Console Configuration
---------------------
The NuttX console is configured by default on USART1 at 115200 BAUD 8N1
(8-bits, not parity, one stop bit). These setting can, of course, easily
be changed by reconfiguring NuttX.

J5 - USART1
-----------
The boards come with a PL-2303 based USB-to-serial board. Also available
as an option is an RS-232 board. Both have the same pin out on a 6-pin
connector that mates with the upper row of J5.

PIN MODULE BOARD J5
--- ------ ---------------------------
1 5V 1 POWER Power jumper
2 GND 3 GND Ground
3 TXD 5 RXD1 PA10 USART1_RXD
4 RXD 7 TXD1 PA9 USART1_TXD
5 RTS? 9 CTS? PA12 USART1_RTS
6 CTS? 11 RTS? PA11 USART1_CTS

PL-2013 USB-to-Serial Interface
-------------------------------

J37 - CON4. Jumper Settings:
1 <-> 3 : Connects PA9 to the RXD1 output pin
2 <-> 4 : Connects PA10 to the TXD1 input pin

J35 - CON2. Jumper Setting:
Open. the PL2303 adapter receives its power from the USB host.

RS-232 Module
-------------

J37 - CON4. Jumper Settings:
1 <-> 3 : Connects PA9 to the RXD1 output pin
2 <-> 4 : Connects PA10 to the TXD1 input pin

J35 - CON2. Jumper Setting:
1 <-> 2 : Proves 3.3V to the RS-232 module.

USB Interface
=============

USB Connector
-------------

The Viewtool base board has a USB Mini-B connector. Only USB device can
be supported with this connector.

------------------------- ------------------------------------
USB Connector
J10 mini-USB GPIO CONFIGURATION(s)
--- --------- ----------- ------------------------------------
Pin Signal
--- --------- ----------- ------------------------------------
1 USB_VBUS VDD_USB (No sensing available)
2 OTG_DM PA11 GPIO_OTGFS_DM (F107) GPIO_USB_DM (F103)
3 OTG_DP PA12 GPIO_OTGFS_DP (F107) GPIO_USB_DP (F103)
4 OTG_ID PA10 GPIO_OTGFS_ID (F107)
5 Shield N/A N/A
6 Shield N/A N/A
7 Shield N/A N/A
8 Shield N/A N/A
9 Shield N/A N/A
PE11 USB_EN GPIO controlled soft pull-up (if J51 closed)

NOTES:
1. GPIO_OTGFS_VBUS (F107) should not be configured. No VBUS sensing
2. GPIO_OTGFS_SOF (F107) is not used
3. The OTG FS module has is own, internal soft pull-up logic. J51 should
be open so that PE11 activity does effect USB.


STM32F103 Configuration
-----------------------

System Type -> STM32 Peripheral Support
CONFIG_STM32_USB=y : Enable USB FS device

Device Drivers
CONFIG_USBDEV : USB device support

STATUS: All of the code is in place, but no testing has been performed.

STM32F107 Configuration
-----------------------

System Type -> STM32 Peripheral Support
CONFIG_STM32_OTGFS=y : Enable OTG FS

Device Drivers
CONFIG_USBDEV : USB device support

STATUS: All of the code is in place, but USB is not yet functional.

CDC/ACM Configuration
---------------------

This will select the CDC/ACM serial device. Defaults for the other
options should be okay.

Device Drivers -> USB Device Driver Support
CONFIG_CDCACM=y : Enable the CDC/ACM device

The following setting enables an example that can can be used to control
the CDC/ACM device. It will add two new NSH commands:

a. sercon will connect the USB serial device (creating /dev/ttyACM0), and
b. serdis which will disconnect the USB serial device (destroying
/dev/ttyACM0).

Application Configuration -> Examples:
CONFIG_SYSTEM_CDCACM=y : Enable an CDC/ACM example

USB MSC Configuration
---------------------
[WARNING: This configuration has not yet been verified]

The Mass Storage Class (MSC) class driver can be selected in order to
export the microSD card to the host computer. MSC support is selected:

Device Drivers -> USB Device Driver Support
CONFIG_USBMSC=y : Enable the USB MSC class driver
CONFIG_USBMSC_EPBULKOUT=1 : Use EP1 for the BULK OUT endpoint
CONFIG_USBMSC_EPBULKIN=2 : Use EP2 for the BULK IN endpoint

The following setting enables an add-on that can can be used to control
the USB MSC device. It will add two new NSH commands:

a. msconn will connect the USB serial device and export the microSD
card to the host, and
b. msdis which will disconnect the USB serial device.

Application Configuration -> System Add-Ons:
CONFIG_SYSTEM_USBMSC=y : Enable the USBMSC add-on
CONFIG_SYSTEM_USBMSC_NLUNS=1 : One LUN
CONFIG_SYSTEM_USBMSC_DEVMINOR1=0 : Minor device zero
CONFIG_SYSTEM_USBMSC_DEVPATH1="/dev/mmcsd0"
: Use a single, LUN: The microSD
: block driver.

NOTES:

a. To prevent file system corruption, make sure that the microSD is un-
mounted *before* exporting the mass storage device to the host:

nsh> umount /mnt/sdcard
nsh> mscon

The microSD can be re-mounted after the mass storage class is disconnected:

nsh> msdis
nsh> mount -t vfat /dev/mtdblock0 /mnt/at25

microSD Card Interface
======================

microSD Connector
-----------------

----------------------------- ------------------------- --------------------------------
Connector J17 GPIO CONFIGURATION(s)
PIN SIGNAL LEGEND (no remapping) DP83848C Board
--- ------------- ----------- ------------------------- --------------------------------
1 VDD 3.3 N/A N/A 3.3
2 GND N/A N/A GND
3 PC8 SDIO_D0 GPIO_SDIO_D0 D0
4 PD2 SDIO_CMD GPIO_SDIO_CMD CMD
5 PC12 SDIO_CLK GPIO_SDIO_CK CLK
6 PC11 SDIO_D3 GPIO_SDIO_D3 D3
7 PC10 SDIO_D2 GPIO_SDIO_D2 D2
8 PC9 SDIO_D1 GPIO_SDIO_D1 D1
9 PA8 CD Board-specific GPIO input CD
--- ------------- ----------- ------------------------- --------------------------------

NOTES:
1. The STM32F107 does not support the SDIO/memory card interface. So the SD card
cannot be used with the STM32F107 (unless the pin-out just happens to match up
with an SPI-based card interface???)

Configuration (STM32F103 only)
------------------------------
[WARNING: This configuration has not yet been verified]

Enabling SDIO-based MMC/SD support:

System Type->STM32 Peripheral Support
CONFIG_STM32_SDIO=y : Enable SDIO support
CONFIG_STM32_DMA2=y : DMA2 is needed by the driver

Device Drivers -> MMC/SD Driver Support
CONFIG_MMCSD=y : Enable MMC/SD support
CONFIG_MMSCD_NSLOTS=1 : One slot per driver instance
CONFIG_MMCSD_HAVECARDDETECT=y : Supports card-detect PIOs
CONFIG_MMCSD_MMCSUPPORT=n : Interferes with some SD cards
CONFIG_MMCSD_SPI=n : No SPI-based MMC/SD support
CONFIG_MMCSD_SDIO=y : SDIO-based MMC/SD support
CONFIG_SDIO_DMA=y : Use SDIO DMA
CONFIG_SDIO_BLOCKSETUP=y : Needs to know block sizes

Library Routines
CONFIG_SCHED_WORKQUEUE=y : Driver needs work queue support

Application Configuration -> NSH Library
CONFIG_NSH_ARCHINIT=y : NSH board-initialization

Using the SD card
-----------------

1) After booting, an SDIO device will appear as /dev/mmcsd0

2) If you try mounting an SD card with nothing in the slot, the
mount will fail:

nsh> mount -t vfat /dev/mmcsd1 /mnt/sd1
nsh: mount: mount failed: 19

STATUS: All of the code is in place, but no testing has been performed.

ViewTool DP83848 Ethernet Module
================================

Ethernet Connector
------------------

----------------------------- ------------------------ --------------------------------
Connector J2 GPIO CONFIGURATION(s)
PIN SIGNAL LEGEND (no remapping) DP83848C Board
--- ------------- ----------- ------------------------ --------------------------------
1 PA0 MII_CRS N/A N/C
2 PB11/SDA2 COM_TX_EN GPIO_ETH_RMII_TX_EN TX_EN
3 PA3/LED_G2 MII_COL N/A N/C
4 PB12/NSS2 COM_TXD0 GPIO_ETH_RMII_TXD0 TXD0
5 PA1 MII_RX_CLK GPIO_ETH_RMII_REF_CLK OSCIN
6 PB13/SCK2 COM_TXD1 GPIO_ETH_RMII_TXD1 TXD1
7 PB1/CD_RESET MII_RXD3 N/A N/C
8 PC4/LCDTP COM_RXD0 GPIO_ETH_RMII_RXD0 RXD0
9 PB0/BL_PWM MII_RXD2 N/A N/C
10 PC5 COM_RXD1 GPIO_ETH_RMII_RXD1 RXD1
11 PB8/CAN1_RX MII_TXD3 N/A N/C
12 PC1/LED_R1 COM_MDC GPIO_ETH_MDC MDC
13 PC2/LED_R2 MII_TXD2 N/A N/C
14 PA2/LED_G1 COM_MDIO GPIO_ETH_MDIO MDIO
15 PC3/ONEW MII_TX_CLK N/A N/C
16 PB10/SCL2 RX_ER N/A N/C
17 PD2 GPIO1 N/A N/C
18 PA7/MOSI1 COM_RX_DV GPIO_ETH_RMII_CRS_DV CRS_DIV
19 PD3 GPIO2 N/A N/C
20 PB5 COM_PPS_OUT N/A N/C
21 VDD 3.3 VDD_3.3 N/A 3.3V
22 VDD 3.3 VDD_3.3 N/A 3.3V
23 GND GND N/A GND
24 GND GND N/A GND
--- ------------- ----------- ------------------------ --------------------------------

NOTES:
1. RMII interface is used
2. There is a 50MHz clock on board the DP83848. No MCO clock need be provided.

Configuration
-------------

System Type -> STM32 Peripheral Support
CONFIG_STM32_ETHMAC=y : Enable Ethernet driver

System Type -> Ethernet MAC Configuration
CONFIG_STM32_RMII=y : Configuration RM-II DP83848C PHY
CONFIG_STM32_AUTONEG=y
CONFIG_STM32_PHYADDR=1
CONFIG_STM32_PHYSR=16
CONFIG_STM32_PHYSR_SPEED=0x0002
CONFIG_STM32_PHYSR_100MBPS=0x0000
CONFIG_STM32_PHYSR_MODE=0x0004
CONFIG_STM32_PHYSR_FULLDUPLEX=0x0004
CONFIG_STM32_RMII_EXTCLK=y

Device Drivers -> Networking Devices
CONFIG_NETDEVICES=y : More PHY stuff
CONFIG_ETH0_PHY_DP83848C=y

Networking (required)
CONFIG_NET=y : Enabled networking support
CONFIG_NSH_NOMAC=y

Networking (recommended/typical)
CONFIG_NSOCKET_DESCRIPTORS=10 : Socket-related
CONFIG_NET_SOCKOPTS=y

CONFIG_NET_ETH_MTU=650 : Maximum packet size
CONFIG_NET_ETH_TCP_RECVWNDO=650
CONFIG_NET_TCP_READAHEAD=y : Enable read-ahead buffering
CONFIG_NET_TCP_READAHEAD_BUFSIZE=650

CONFIG_NET_TCP=y : TCP support
CONFIG_NET_NTCP_READAHEAD_BUFFERS=8

CONFIG_NET_UDP=y : UDP support
CONFIG_NET_UDP_CONNS=8

CONFIG_NET_ICMP=y : ICMP support
CONFIG_NET_ICMP_PING=y

CONFIG_NSH_DRIPADDR=0x0a000001 : Network identity
CONFIG_NSH_IPADDR=0x0a000002
CONFIG_NSH_NETMASK=0xffffff00

Network Utilities (basic)
CONFIG_NETUTILS_TFTPC=y : Needed by NSH unless to disable TFTP commands
CONFIG_NETUTILS_DHCPC=y : Fun stuff
CONFIG_NETUTILS_TELNETD=y : Support for a Telnet NSH console
CONFIG_NSH_TELNET=y

(also FTP, TFTP, WGET, NFS, etc. if you also have a mass storage
device).

Freescale MPL115A barometer sensor
==================================

This board support package includes hooks that can be used to enable
testing of a Freescale MPL115A barometer sensor connected via SPI3 with
chip select on PB6,

Here are the configuration settings that would have to be included to
enabled support for the barometer:

System Type -> Peripherals
CONFIG_STM32_SPI3=y

Drivers -> SPI
CONFIG_SPI=y
CONFIG_SPI_EXCHANGE=y

Drivers -> Sensors
CONFIG_SENSORS=y
CONFIG_MPL115A=y
CONFIG_NSH_ARCHINIT=y


Note: this driver uses SPI3 then since PB3 pin is also use to JTAG TDO you
need to disable JTAG support to get this driver working:

System Type
CONFIG_STM32_JTAG_DISABLE=y

LCD/Touchscreen Interface
=========================

An LCD may be connected via J11. Only the STM32F103 supports the FSMC signals
needed to drive the LCD.

The LCD features an (1) HY32D module with built-in SSD1289 LCD controller, and (a)
a XPT2046 touch screen controller.

LCD Connector
-------------

----------------------------- ------------------------ --------------------------------
Connector J11 GPIO CONFIGURATION(s)
PIN SIGNAL LEGEND (F103 only) LCD Module
--- ------------- ----------- ------------------------ --------------------------------
1 VDD_5 NC N/A 5V ---
2 GND GND N/A GND ---
3 PD14 DATA0 GPIO_NPS_D0 D0 HY32D
4 PD15 DATA1 GPIO_NPS_D1 D1 HY32D
5 PD0 DATA2 GPIO_NPS_D2 D2 HY32D
6 PD1 DATA3 GPIO_NPS_D3 D3 HY32D
7 PE7 DATA4 GPIO_NPS_D4 D4 HY32D
8 PE8 DATA5 GPIO_NPS_D5 D5 HY32D
9 PE9 DATA6 GPIO_NPS_D6 D6 HY32D
10 PE10 DATA7 GPIO_NPS_D7 D7 HY32D
11 PE11 DATA8 GPIO_NPS_D8 D8 HY32D
12 PE12 DATA9 GPIO_NPS_D9 D9 HY32D
13 PE13 DATA10 GPIO_NPS_D10 D10 HY32D
14 PE14 DATA11 GPIO_NPS_D11 D11 HY32D
15 PE15 DATA12 GPIO_NPS_D12 D12 HY32D
16 PD8 DATA13 GPIO_NPS_D13 D13 HY32D
17 PD9 DATA14 GPIO_NPS_D14 D14 HY32D
18 PD10 DATA15 GPIO_NPS_D15 D15 HY32D
19 (3) LCD_CS GPIO_NPS_NE1 CS HY32D
20 PD11 LCD_RS GPIO_NPS_A16 RS HY32D
21 PD5 LCD_R/W GPIO_NPS_NWE WR HY32D
22 PD4 LCD_RD GPIO_NPS_NOE RD HY32D
23 PB1 LCD_RESET (GPIO) RESET HY32D
24 N/C NC N/A TE (unused?)
25 VDD_3.3 BL_VCC N/A BLVDD CA6219 (Drives LCD backlight)
26 GND BL_GND N/A BLGND CA6219
27 PB0 BL_PWM GPIO_TIM3_CH3OUT(2) BL_CNT CA6219
28 PC5 LCDTP_IRQ (GPIO) TP_IRQ XPT2046
29 PC4 LCDTP_CS (GPIO) TP_CS XPT2046
30 PB13 LCDTP_CLK GPIO_SPI2_SCK TP_SCK XPT2046
31 PB15 LCDTP_DIN GPIO_SPI2_MOSI TP_SI XPT2046
32 PB14 LCDTP_DOUT GPIO_SPI2_MISO TP_SO XPT2046
33 VDD_3.3 VDD_3.3 N/A 3.3V ---
34 GND GND N/A GND ---
--- ------------- ----------- ------------------------ --------------------------------

NOTES:
1) Only the F103 version of the board supports the FSMC
2) No remap
3) LCD_CS is controlled by J13 JUMPER4 (under the LCD unfortunately):

1->2 : PD7 (GPIO_NPS_NE1) enables the multiplexor : 1E\ enable input (active LOW)
3->4 : PD13 provides 1A0 input (1A1 is grounded). : 1A0 address input
So will chip enable to either LCD_CS or
Flash_CS.
5->6 : 1Y0 output to LCD_CS : 1Y0 address output
7->8 : 1Y1 output to Flash_CE : 1Y1 address output

Truth Table:
1E\ 1A0 1A1 1Y0 1Y1
--- --- --- --- ---
HI N/A N/A HI HI
LO LO LO LO HI
LO HI LO HI LO

Toolchains
==========

NOTE about Windows native toolchains
------------------------------------

There are several limitations to using a Windows based toolchain in a
Cygwin environment. The three biggest are:

1. The Windows toolchain cannot follow Cygwin paths. Path conversions are
performed automatically in the Cygwin makefiles using the 'cygpath'
utility but you might easily find some new path problems. If so, check
out 'cygpath -w'

2. Windows toolchains cannot follow Cygwin symbolic links. Many symbolic
links are used in Nuttx (e.g., include/arch). The make system works
around these problems for the Windows tools by copying directories
instead of linking them. But this can also cause some confusion for
you: For example, you may edit a file in a "linked" directory and find
that your changes had no effect. That is because you are building the
copy of the file in the "fake" symbolic directory. If you use a\
Windows toolchain, you should get in the habit of making like this:

make clean_context all

An alias in your .bashrc file might make that less painful.

Configurations
==============

Information Common to All Configurations
----------------------------------------
Each SAM3U-EK configuration is maintained in a sub-directory and
can be selected as follow:

cd tools
./configure.sh viewtool-stm32f107/
cd -

Before starting the build, make sure that your PATH environment variable
includes the correct path to your toolchain.

And then build NuttX by simply typing the following. At the conclusion of
the make, the nuttx binary will reside in an ELF file called, simply, nuttx.

make

The that is provided above as an argument to the tools/configure.sh
must be is one of the following.

NOTES:

1. These configurations use the mconf-based configuration tool. To
change any of these configurations using that tool, you should:

a. Build and install the kconfig-mconf tool. See nuttx/README.txt
see additional README.txt files in the NuttX tools repository.

b. Execute 'make menuconfig' in nuttx/ in order to start the
reconfiguration process.

2. Unless stated otherwise, all configurations generate console
output on USART1.

3. Unless otherwise stated, the configurations are setup for
Cygwin under Windows:

Build Setup:
CONFIG_HOST_WINDOWS=y : Windows operating system
CONFIG_WINDOWS_CYGWIN=y : POSIX environment under windows

4. All of these configurations use the CodeSourcery for Windows toolchain
(unless stated otherwise in the description of the configuration). That
toolchain selection can easily be reconfigured using 'make menuconfig'.
Here are the relevant current settings:

System Type -> Toolchain:
CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : GNU EABI toolchain for windows

See also the "NOTE about Windows native toolchains" in the section call
"GNU Toolchain Options" above.

4. These configurations all assume that the STM32F107VCT6 is mounted on
board. This is configurable; you can select the STM32F103VCT6 as an
alternative.

5. These configurations all assume that you are loading code using
something like the ST-Link v2 JTAG. None of these configurations are
setup to use the DFU bootloader but should be easily reconfigured to
use that bootloader is so desired.

Configuration Sub-directories
-----------------------------

netnsh:

This configuration directory provide the NuttShell (NSH) with
networking support.

NOTES:
1. This configuration will work only on the version the viewtool
board with the STM32F107VCT6 installed. If you have a board
with the STM32F103VCT6 installed, please use the nsh configuration
described below.

2. There is no PHY on the base viewtool stm32f107 board. You must
also have the "ViewTool DP83848 Ethernet Module" installed on J2
in order to support networking.

3. Since networking is enabled, you will see some boot-up delays when
the network connection is established. These delays can be quite
large if no network is attached (A production design to bring up the
network asynchronously to avoid these start up delays).

4. This configuration uses the default USART1 serial console. That
is easily changed by reconfiguring to (1) enable a different
serial peripheral, and (2) selecting that serial peripheral as
the console device.

5. By default, this configuration is set up to build on Windows
under either a Cygwin or MSYS environment using a recent, Windows-
native, generic ARM EABI GCC toolchain (such as the CodeSourcery
toolchain). Both the build environment and the toolchain
selection can easily be changed by reconfiguring:

CONFIG_HOST_WINDOWS=y : Windows operating system
CONFIG_WINDOWS_CYGWIN=y : POSIX environment under windows
CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery for Windows

6. USB support is disabled by default. See the section above entitled,
"USB Interface"

STATUS. The first time I build the configuration, I get some undefined
external references. No idea why. Simply cleaning the apps/ directory
and rebuilding fixes the problem:

make apps_clean all

nsh:

This configuration directory provide the basic NuttShell (NSH).

NOTES:
1. This configuration will work with either the version of the board
with STM32F107VCT6 or STM32F103VCT6 installed. The default
configuration is for the STM32F107VCT6. To use this configuration
with a STM32F103VCT6, it would have to be modified as follows:

System Type -> STM32 Configuration Options
CONFIG_ARCH_CHIP_STM32F103VC=y
CONFIG_ARCH_CHIP_STM32F107VC=n

2. This configuration uses the default USART1 serial console. That
is easily changed by reconfiguring to (1) enable a different
serial peripheral, and (2) selecting that serial peripheral as
the console device.

3. By default, this configuration is set up to build on Windows
under either a Cygwin or MSYS environment using a recent, Windows-
native, generic ARM EABI GCC toolchain (such as the CodeSourcery
toolchain). Both the build environment and the toolchain
selection can easily be changed by reconfiguring:

CONFIG_HOST_WINDOWS=y : Windows operating system
CONFIG_WINDOWS_CYGWIN=y : POSIX environment under windows
CONFIG_ARMV7M_TOOLCHAIN_CODESOURCERYW=y : CodeSourcery for Windows

4. USB support is disabled by default. See the section above entitled,
"USB Interface"

3. This configured can be re-configured to use either the Viewtool LCD
module. NOTE: The LCD module can only be used on the STM32F103 version
of the board. The LCD requires FSMC support.

System Type -> STM32 Chip Selection:
CONFIG_ARCH_CHIP_STM32F103VC=y : Select STM32F103VCT6

System Type -> Peripherals:
CONFIG_STM32_FSMC=y : Enable FSMC LCD interface

Device Drivers -> LCD Driver Support
CONFIG_LCD=y : Enable LCD support
CONFIG_NX_LCDDRIVER=y : LCD graphics device
CONFIG_LCD_MAXCONTRAST=1
CONFIG_LCD_MAXPOWER=255
CONFIG_LCD_LANDSCAPE=y : Landscape orientation
CONFIG_LCD_SSD1289=y : Select the SSD1289
CONFIG_SSD1289_PROFILE1=y

Graphics Support
CONFIG_NX=y

Graphics Support -> Supported Pixel Depths
CONFIG_NX_DISABLE_1BPP=y : Only 16BPP supported
CONFIG_NX_DISABLE_2BPP=y
CONFIG_NX_DISABLE_4BPP=y
CONFIG_NX_DISABLE_8BPP=y
CONFIG_NX_DISABLE_24BPP=y
CONFIG_NX_DISABLE_32BPP=y

Graphics Support -> Font Selections
CONFIG_NXFONTS_CHARBITS=7
CONFIG_NXFONT_SANS22X29B=y
CONFIG_NXFONT_SANS23X27=y

Application Configuration -> Examples
CONFIG_EXAMPLES_NXLINES=y
CONFIG_EXAMPLES_NXLINES_BGCOLOR=0x0320
CONFIG_EXAMPLES_NXLINES_LINEWIDTH=16
CONFIG_EXAMPLES_NXLINES_LINECOLOR=0xffe0
CONFIG_EXAMPLES_NXLINES_BORDERWIDTH=4
CONFIG_EXAMPLES_NXLINES_BORDERCOLOR=0xffe0
CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR=0xf7bb
CONFIG_EXAMPLES_NXLINES_BPP=16

STATUS: Not working; reads 0x8999 as device ID. This may perhaps
be due to incorrect jumper settings

6. This configuration has been used for verifying the touchscreen on
on the Viewtool LCD module. NOTE: The LCD module can really only
be used on the STM32F103 version of the board. The LCD requires
FSMC support (the touchscreen, however, does not but the touchscreen
is not very meaningful with no LCD).

System Type -> STM32 Chip Selection:
CONFIG_ARCH_CHIP_STM32F103VC=y : Select STM32F103VCT6

With the following modifications, you can include the touchscreen
test program at apps/examples/touchscreen as an NSH built-in
application. You can enable the touchscreen and test by modifying
the default configuration in the following ways:

Device Drivers
CONFIG_SPI=y : Enable SPI support
CONFIG_SPI_EXCHANGE=y : The exchange() method is supported

CONFIG_INPUT=y : Enable support for input devices
CONFIG_INPUT_ADS7843E=y : Enable support for the XPT2046
CONFIG_ADS7843E_SPIDEV=2 : Use SPI2 for communication
CONFIG_ADS7843E_SPIMODE=0 : Use SPI mode 0
CONFIG_ADS7843E_FREQUENCY=1000000 : SPI BAUD 1MHz
CONFIG_ADS7843E_SWAPXY=y : If landscape orientation
CONFIG_ADS7843E_THRESHX=51 : These will probably need to be tuned
CONFIG_ADS7843E_THRESHY=39

System Type -> Peripherals:
CONFIG_STM32_SPI2=y : Enable support for SPI2

RTOS Features:
CONFIG_DISABLE_SIGNALS=n : Signals are required

Library Support:
CONFIG_SCHED_WORKQUEUE=y : Work queue support required

Applicaton Configuration:
CONFIG_EXAMPLES_TOUCHSCREEN=y : Enable the touchscreen built-int test

Defaults should be okay for related touchscreen settings. Touchscreen
debug output on USART1 can be enabled with:

Build Setup:
CONFIG_DEBUG_FEATURES=y : Enable debug features
CONFIG_DEBUG_INFO=y : Enable verbose debug output
CONFIG_DEBUG_INPUT=y : Enable debug output from input devices

STATUS: Working

highpri:

This configuration was used to verify the NuttX high priority, nested
interrupt feature. This is a board-specific test and probably not
of much interest now other than for reference.

This configuration targets the viewtool board with the STM32F103VCT6
mounted. It uses TIM6 to generated high rate interrupts for the test.