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LPC1224_BO_SRM

Board v0.3

LPC1224 break-out board

System

Reference Manual

LPC1224_BO_SRM for Board v0.3

September 10, 2015 - Doc rev 0.3b

Author: Nathaël Pajani

Techno-Innov - DomoTab

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LPC1224_BO_SRM

Board v0.3

Table des matières

1 Introduction

2 Licenses

2.1 Documentation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Hardware

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Software

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Hardware

3.1 Dimensions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Connectors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 P1 Connector

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 P2 Connector

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3 P6 and P7 Connectors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Jumpers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.1 J3 and J4 jumpers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Electronics

4.1 Micro-controller LPC1224

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1.1 Internal RAM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.2 Internal Flash

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.3 Communication interfaces

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.4 GPIO

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.5 ADC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1.6 Reset and ISP mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 I2C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.3 User Led and Button

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.4 USB to UART bridge

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5 Software

5.1 Sample Source Code

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.1 Grab the sources

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.2 Sample code content

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1.3 Sample code entry point

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2 Building the binary

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.1 Get a toolchain

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2.2 Build command and options

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2.3 Build process

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3 Uploading binary on target

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.1 Tools

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.2 Connection with target and upload

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6 Board revisions history

6.1 v01

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.2 v02

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.3 v03

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7 Annexes

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7.1 Schematics

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.2 BOM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.2.1 Block version

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7.2.2 Easy order version

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.3 Document revision History

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.4 Disclaimer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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LPC1224_BO_SRM

Board v0.3

1 Introduction

You are reading the

System Reference Manual

for the LPC1224 break-out board. This manual covers the

board use and design.

The LPC1224 break-out board is an electronics development and prototyping platform using the

LPC1224 micro-

controller from NXP

The LPC1224 micro-controller has a Cortex-M0 ARM core, a minimum of 32KB of flash memory, 4KB of internal

SRAM, and multiple interfaces.

The board also includes a bi-color user LED (Red / Green), a reset button, an ISP mode select / User button, an

USB-to-UART bridge (used for programming and easy communication with the module), and 34 GPIO available

on 2.54mm pins dispatched for easy use on prototyping boards.

Binaries for the LPC1224 break-out board can be generated using a gcc ARM toolchain and uploaded using the

serial line (over USB thanks to the integrated USB-to-UART bridge) and our lpcprog tool (or similar tools).

The LPC1224 break-out board is designed for users interested in embedded ARM micro-controller development

using free, libre and open source softwares only.

Every information about the design is available and all documentations are freely accessible. You can download the

source files for the LPC1224 break-out board and modify them using KiCad EDA (GPL) according to the license

terms found in the license section. You can create your own LPC1224 break-out board or a modified version.

In this document the LPC1224 break-out board will be referred as

the board

2 Licenses

2.1 Documentation

The present document is under Creative Commons CC BY-SA 3.0 License.

It is written in L

TEX and the PDF version is generated using pdflatex.

2.2 Hardware

The LPC1224 break-out board hardware and schematics are under Creative Commons CC BY-SA 3.0 License.

You can produce your own original or modified version of the LPC1224 break-out board, and use it however you

like, even sell it for profit.

2.3 Software

All the software examples created for the LPC1224 break-out board are under GPLv3 License.

The lpcprog tool used to program the module is also under GPLv3 License.

http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC1224FBD48.html

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LPC1224_BO_SRM

Board v0.3

3 Hardware

3.1 Dimensions

Fig 1 – USB A board type

Fig 2 – micro USB board type

Fig 3 – Headers (2.54mm)

Figures

and

give the different dimensions and the position of the main elements (connectors, buttons and

user led) of the module.

The only difference between the "

USB A

" and the "

micro USB

board types is the USB connector.

Note

: Not all components are shown on each figure for readability. All components but the USB

connector are the same on both board types.

3.2 Connectors

The module has two 2.54mm pitch headers numbered P1 and P2, and one USB connector, either P6 or P7

depending on the board type. Refer to figure

for connectors position and to table

for a short description.

Detailed description of the signals found on each connector pin follow.

Name

Description

19 pins, 2.54mm pitch header. Provides +3.3V, ground, UARTS, I2C, SPI, and GPIO from

port 0.

19 pins, 2.54mm pitch header. Provides +5V from USB, ADC, and GPIO from port 0 and

USB micro-AB female connector. Available only on micro USB board type.

USB A male connector. Available only on USB A board type.

Table

1 – Module Connectors Description

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Fig 4 – Module Connectors

3.2.1 P1 Connector

Fig 5 – P1 Connector

Pin #

Description

LPC Pin

+3.3V : +3.3 Volt

LPC pin 15 : PIO0_0

Rx0 : LPC UART_0 Receive Data

LPC pin 16 : PIO0_1

Tx0 : LPC UART_0 Transmit Data

LPC pin 17 : PIO0_2

LPC pin 18 : PIO0_3

LPC pin 19 : PIO0_4

LPC pin 20 : PIO0_5

LPC pin 21 : PIO0_6

LPC pin 22 : PIO0_7

Rx1 : LPC UART_1 Receive Data

LPC pin 23 : PIO0_8

Tx1 : LPC UART_1 Transmit Data

LPC pin 24 : PIO0_9

SCL : Clock for I2C bus

LPC pin 25 : PIO0_10

SDA : Bidirectional Serial Data for I2C bus

LPC pin 26 : PIO0_11

SCK : Clock for SPI bus

LPC pin 29 : PIO0_14

SSEL : Slave Select for SPI bus

LPC pin 30 : PIO0_15

MISO : Master In Slave Out for SPI bus

LPC pin 31 : PIO0_16

MOSI : Master Out Slave In for SPI bus

LPC pin 32 : PIO0_17

GND : Ground

Table

2 – P1 Connector Pinout

P1 connector is a standard 2.54mm (0.1 inch) pitch header, with 1 row of 19 pins, and can be populated using

either male or female header, and mounted either on top or on bottom of the board.

P1 connector provides access to +3.3V, Ground, UART0, UART1, I2C, SPI, and additional GPIO pins from port

0 of the LPC micro-controller.

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3.2.2 P2 Connector

P2 connector is a standard 2.54mm (0.1 inch) pitch header, with 1 row of 10 pins, and can be populated using

either male or female header, and mounted either on top or on bottom side of the board.

P2 connector provides access to USB +5V power supply, ADC, and GPIO pins from port 0 and 1 of the LPC

micro-controller.

Fig 6 – P2 Connector

Pin #

Description

LPC Pin

+5V : +5 Volt from USB connector

LPC pin 14 : PIO0_29

LPC pin 13 : PIO0_28

LPC pin 12 : PIO0_27

LPC pin 11 : PIO0_26

LPC pin 10 : PIO0_25

LPC pin 9 : PIO0_24

LPC pin 8 : PIO0_23

LPC pin 7 : PIO0_22

LPC pin 6 : PIO0_21

LPC pin 5 : PIO0_20

LPC pin 4 : PIO0_19

LPC pin 33 : PIO0_18

ADC5

LPC pin 39 : PIO1_3

ADC4

LPC pin 38 : PIO1_2

ADC3

LPC pin 37 : PIO1_1

ADC2

LPC pin 36 : PIO1_0

ADC1

LPC pin 35 : PIO0_31

ADC0

LPC pin 34 : PIO0_30

Table

3 – P2 Connector Pinout

Note

: Most P2 pins also provide alternate capture or match input functions for 32-bit timers. Refer

to the LPC1224 documentation from NXP for full documentation of the alternate functions.

Note

: When the board is not connected to a power source on the USB port the +5V is not present

on pin 1 of P2 connector.

3.2.3 P6 and P7 Connectors

P6 and P7 are one-time choice options. Only one of them is present, depending on the board type. Both are

standard USB connectors. P6 is a female micro-AB port, and P7 is a male USB-A port.

Refer to the

Universal Serial Bus (USB)

page on Wikipedia for pinout and more information on the USB bus and

connectors.

http://fr.wikipedia.org/wiki/Universal_Serial_Bus

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Fig 7 – P6 and P7 Connectors

3.3 Jumpers

The module has 2 configuration jumpers, numbered J3 and J4. Jumpers are common to all board types.

Fig 8 – Module Jumpers

Name

Description

J3 and J4 Selection between UART0 andUART1 for USB-to-UART bridge.

Table

4 – Module Jumpers Description

3.3.1 J3 and J4 jumpers

J3 and J4 jumpers are used to connect UART0 or UART1 pins to the FTDI FT230XS USB-to-UART bridge.

When the jumpers are on the top two pins for each jumper, then UART0 is connected to the USB-to-UART

bridge. This position must be used for binary upload in ISP mode.

When the jumpers are on the bottom pins for each jumper, then UART1 is connected to the USB-to-UART

bridge.

It is possible to operate the board without jumpers. Then the UAS-to-UART is not connected to the micro-

controller.

Note

: It is not mandatory for the jumpers to be on the same position on J3 and J4.

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4 Electronics

The LPC1224 break-out board has been created using

KiCad

EDA software suite for the creation of the sche-

matics and printed circuit boards.

See page

in the annexes for the full schematics. The sources for the schematics are available for download from

the

module page

on Techno-Innov.fr.

Fig 9 – Module Main Compo-

nents

Name

Description

LPC1224 ARM Cortex-M0 micro-controller.

3.0V LDO reference voltage generator.

FTDI FT230XS USB to UART bridge.

User led, bicolore (red / green).

Green led : FTDI Rx activity.

Orange led : FTDI Tx activity..

Reset

Reset button for LPC1224 (SW2).

ISP

ISP mode select button for LPC1224 (SW1).

Table

5 – Module Main Components Description

4.1 Micro-controller LPC1224

The module’s micro-controller is a

LPC1224 from NXP

. The LPC1224 version used on the module is the

LPC1224FBD48/101. All LPC1224 have an ARM Cortex-M0 core running at up to 45 MHz.

The module uses the internal 12 MHz RC Oscillator as main clock. Its 1% accuracy is suitable for most applica-

tions.

http://www.kicad-pcb.org/display/KICAD/

http://www.techno-innov.fr/technique-lpc1224-bo/

http://www.nxp.com/products/microcontrollers/cortex_m0_m0/LPC1224FBD48.html

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LPC1224_BO_SRM

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Note

: Refer to the LPC1224 documentation from NXP for full list and documentation of the LPC1224

features. Here are only the descriptions of the features used on the module.

4.1.1 Internal RAM

The LPC1224FBD48/101 has 4kB of internal SRAM mapped in one block at address 0x1000 0000.

4.1.2 Internal Flash

The LPC1224FBD48/101 has 32kB of internal FLASH memory, mapped at address 0x0000 0000. The flash me-

mory programming requires no additional hardware thanks to the In-System Programming (ISP) and In-Application

Programming (IAP) on-chip bootloader software.

See section

4.1.6

(Reset and ISP mode) or sections

5.2

(Code Compilation) and

5.3

(Uploading binary on target)

for more information on internal FLASH memory.

4.1.3 Communication interfaces

The module makes use of the following communication interfaces found on the LPC1224 :

•

Two UARTs

: UART0 and UART1 are connected to P1 header and to the USB to UART bridge through

J3 and J4 jumpers.

UART0 is used for In-System Programming of the LPC1224.

•

One I2C bus interface

supporting full I2C-bus specification and Fast-mode Plus with a data rate of 1

Mbit/s. I2C is connected to P1 header. See section

4.2

for more information.

•

One SSP/SPI controller

with FIFO and multi-protocol capabilities. The SPI bus is also connected to P1

header.

4.1.4 GPIO

The module gives access to 34 GPIO pins dispatched on P1 and P2 connectors.

Refer to tables

and

for details of the signals available on these GPIO and to the LPC1224 documentation

from NXP for full list of features for each GPIO.

4.1.5 ADC

The last six GPIO pins on P2 connector are inputs channels 0 to 5 for the 10-bit ADC of the LPC1224 micro-

controller.

The internal ADC uses the voltage on the Vref pin as reference voltage for the conversion. The LPC1224 break-out

board integrates a 3.0V reference voltage LDO to provide a stable and accurate Vref to the LPC1224.

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LPC1224_BO_SRM

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Fig 10 – ADC Input Pins and Vref

4.1.6 Reset and ISP mode

Reseting the LPC1224 without removing the power can be done with the Reset button (SW2).

To enter In-System Programming (ISP) mode after reset you must hold the ISP button (SW1) when you release

the reset button. The LPC1224 bootloader considers a LOW level on the PIO0_12 pin as an external hardware

request to enter ISP mode and start the ISP command handler. The sampling of the GPIO0_12 pin may take up

to 3ms.

Refer to section

5.3

or to the LPC1224 user manual for more information on ISP mode.

If the ISP button is not held when th Reset button is released (and a valid user code is found in Flash memory)

then the execution is transfered to the user program.

4.2 I2C

The LPC1224 break-out board has no components on the I2C bus, leaving the whole address space available for

the user. The LPC1224 break-out board provides two 1.5kOhms pull-up resistors on both SDA and SCL lines.

4.3 User Led and Button

The module has three leds and two buttons. The two leds connected to the USB to UART bridge (D3 and D4)

and the Reset button have dedicated functions and cannot be assigned other functions.

The remaining led (D1) and button (ISP) can be used as the user wishes.

The D1 led is a bi-color red / green led connected to PIO1_4 (pin 40) and PIO1_5 (pin 41). Both can be turned

on at the same time, providing a third color (orange).

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Fig 11 – User Led

Note

: The PIO1_4 and PIO1_5 pins are not PWM capable so it’s not possible to create shades

between red and green without using a lot of processing power.

After reset the ISP button can be used by the user to any purpose. It’s state can be read on pin PIO0_12 (pin

27).

4.4 USB to UART bridge

Fig 12 – USB to UART bridge

In order to ease the development process and the use of the module we added a USB to UART bridge on-board.

This bridge is made by a FTDI FT230XS chip. It provides a 3.3V regulated voltage for the module and is well

supported on most operating systems so there is usually no configuration required to use it as a serial line on the

host development system, removing the need of any additional power source or of specific hardware to program the

LPC1224 micro-controller and communicate with the module.

The FTDI chip controls two "activity" leds for Rx (D3, the green one) and Tx (D4, orange one) data over the

serial link.

Removing jumpers J3 and J4 disconnects the USB to UART bridge from the LPC1224 micro-controller.

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LPC1224_BO_SRM

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5 Software

The LPC micro-controller family uses ARM cores, which make them very easy to use. Apart from a few wrappers,

all the code can be written in C and compiled using gcc.

ARM, NXP and other vendors provide sample code, but published under many different licences. The code we

provide for the LPC1224 break-out board is published under the well known GPLv3 licence.

5.1 Sample Source Code

5.1.1 Grab the sources

An example application code can be downloaded from

our git repository

using the following clone command :

user@host:

/sw$

git clone http://gitclone.techno-innov.fr/modules

The LPC1224 break-out board can use the code from the

apps/base

sub-directory as there are very few

differences between the LPC1224 break-out board and the GPIO Demo module. The only differences are the lack

of EEPROM memory and temperature sensor on the I2C bus and the SPI CS pin which is not used for I2C clock

activation for the EEPROM and thus fully available to the user.

5.1.2 Sample code content

This code provides the micro-controller definitions (Cortex-M0 specific definitions, registers, interrupts ...) and

the routines required to start the micro-controller (bootstrap, vector table, power state, flash, clocks).

At the time of writing it also provides a basic set of library functions and the drivers for the interfaces found

on the module. The list of supported features and interfaces is updated as the development goes on, so read the

README file for the full list of supported features and interfaces.

The code has been split in five parts :

core/

drivers/

extdrv/

apps/

and

lib/

(with the associated

directories under

include/

for the headers) :

•

core

: Contains all the required parts and system initialisations. Many functions in there are defined as

weak aliases of dummy functions, so the code compiles even if no drivers are used. When these functions are

redefined in the driver code they override the weak definition.

•

lib

: Contains the implemented parts of the small C library for our code. The micro-controller does not run

a full Linux system, so the gnu libc must not be used, and even a µClibc is much more than what’s required.

Most of the code in these files come from the kernel implementations of libc parts.

•

drivers

: Contains the drivers for the different interfaces found on the module.

•

extdrv

: Provides drivers for external components, either on the module (EEPROM, status led, tmp101

temperature sensor), or to be purshased separately and connected to the module.

The number of external parts supported will grow with time. Note that it may not be possible to use all of

them at the same time.

•

apps

: Provides sample applications for the different modules made by Techno-Innov which demonstrate

either LPC1224 interfaces or external drivers, which can be used as base for your own developments.

Most modules will have their own directory under

apps/

. The LPC1224 break-out board uses the

base/

http://git.techno-innov.fr/?p=modules;a=summary

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subdirectory, which is common with the GPIO Demo module. Creating a new app is as easy as creating a new

sub-directory under

apps/base

(with no spaces or special caracters in the name), copying the

Makefile

from one of the other apps in your new app directory, and creating your own C source file(s) (maybe starting

with a copy of an existing example).

If you created a new module, you should consider creating a new "module" directory under

apps/

with it’s

own sub-directories for specific apps.

5.1.3 Sample code entry point

The main loop is in

main.c

in function

main()

, as with any C program, though

main()

is called by the

bootstrap code (

Reset_Handler()

core/bootstrap.c

) and could have any name.

The calls to the system initialisation routines have been put together in the

system_init()

function.

SELECTED_FREQ

must be set to one of the

FREQ_SEL_**MHz

defined in

include/core/system.h

•

FREQ_SEL_12MHz

•

FREQ_SEL_24MHz

•

FREQ_SEL_36MHz

•

FREQ_SEL_48MHz

•

FREQ_SEL_60MHz

Note

: The frequency can go up to 60MHz despite what is said in the documentation, but the micro-

controller needs much more power at higher frequencies.

Note

system.h

provides two sleep functions (

msleep()

and

usleep()

). These will activate the

systick with a 1ms tick if it has not been done yet.

Note

usleep()

may be

very

approximative for short usleep periods.

The pins used by your application should be configured using either the

set_pins()

function and

pio_config

structures (see

common_pins[]

in most examples) or the

config_gpio()

function for each used pin.

5.2 Building the binary

5.2.1 Get a toolchain

Build has been tested using gcc, and only gcc, in the version provided by the

Debian project

, but any ARM gcc

toolchain should do.

In order to get the Debian ARM gcc cross-toolchain you must install package

gcc-arm-none-eabi

There’s no need for the related libc package here, the libc does not fit in our micro-controller memory. Instead have

a look at the content of the

lib/

directory, and add stuff there.

Alternatively you can download pre-compiled gcc toolchains (many different projects provide their own), or build

your own one using

crosstool-ng

or similar projects. For more information on what is a (cross-)toolchain, have a

look at

this information page on elinux.org

http://www.debian.org/

http://crosstool-ng.org/

http://elinux.org/Toolchains

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LPC1224_BO_SRM

Board v0.3

5.2.2 Build command and options

Once done with the toolchain installation (or if you already have one) you should build using the provided

Makefile

by running the simple "

make

" command from any of the

apps/base/

sub-directory.

You can also build all apps by running "

make

" from repository root directory or "

make base/my_app

" to compile

my_app

" from the

apps/base/

sub-directory only. (

base

may be replaced by any other module name). NoteYou

may want to change the

CROSS_COMPILE

variable from the main

Makefile

(in the repository root directory)

and set it to the prefix of your toolchain.

5.2.3 Build process

The specific information about the target (LPC1224 micro-controller) memory (Flash and RAM) used by the

linker is in the

lpc_link_lpc1224.ld

linker script.

The vector table is defined in the

core/bootstrap.c

file, but the checksum of the first seven entries in the

vector table is left unmodified. This checksum must be computed and placed in the eighth vector entry as the

bootloader needs to find a valid checksum in the eighth entry to consider the user code as valid and transfer

execution to the reset handler (first vector table entry).

This is done by the lpcprog tool before sending the binary to the target.

5.3 Uploading binary on target

5.3.1 Tools

To flash the binary (the one with .bin) to the LPC Flash you can use our lpctools package, packaged for Debian

as of 2014-09-10 and available in jessie or newer versions, or available in the

lpctools git repository

Lpctools is released under GPLv3 licence.

Clone the repository using :

user@host:

/sw$

git clone http://gitclone.techno-innov.fr/lpctools

Then build (

make

) the tools.

Note

: Other tools may be used but have not been tested. No tools were found to be open source when

we looked for tools to upload the binaries to the micro-controller. You must check that the tool you

chose to use can take care of the checksum computation.

5.3.2 Connection with target and upload

Usual command line to upload a binary to the micro-controller :

10.

http://git.techno-innov.fr/lpctools

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LPC1224_BO_SRM

Board v0.3

user@host:

/sw$

lpcprog -d /dev/ttyUSB0 -c flash mod_gpio.bin

Part ID 0x3640c02b found on line 18

Flash now all blank.

Checksum check OK

Flash size : 32768, trying to flash 8 blocks of 1024 bytes : 8192

Writing started, 8 blocks of 1024 bytes ...

user@host:

/sw$

If you want to get information on the connected device use the

command of

lpcprog

user@host:

/sw$

lpcprog -d /dev/ttyUSB0 -c id

Part ID 0x3640c02b found on line 18

Part ID is 0x3640c02b

UID: 0x1228f5f5 - 0x4b324307 - 0x08333834 - 0x4d7b2c1a

Boot code version is 1.6

user@host:

/sw$

Note

: The part information definition for each supported micro-controller is in the lpctools package.

See lpctools readme and lpcprog or lpcisp help (-h option) or manpages for more information.

6 Board revisions history

6.1 v01

This board revision has not been sold.

First prototype version, with Rx and Tx crossed for UART1, making it impossible to connect them to USB to

UART bridge.

6.2 v02

This board revision has not been sold.

Added 3.0V LDO voltage regulator for Vref.

6.3 v03

Actual version sold as of writting of this documentation.

Added a 100nF cap to Vref pin.

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LPC1224_BO_SRM

Board v0.3

7 Annexes

7.1 Schematics

The board schematics and PCB layout have been created using

KiCad

EDA software suite. You can download

the sources on the

module page

on Techno-Innov.fr.

(See on next pages)

11.

http://www.kicad-pcb.org/display/KICAD/

12.

http://www.techno-innov.fr/technique-lpc1224-bo/

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LPC1224_BO_SRM

Board v0.3

7.2 BOM

7.2.1 Block version

Part Description

Ref

Module

Nb Vendor

Vendor ref

Farnell

ref

Micro-controller

LPC1224

LQFP48

NXP

LPC1224FBD48/101

1862465

Decoupling capacitors 100nF

C2, C3, C4 0402

Multicomp

MCCA000050

1758896

Filter capacitor 10µF

0603

TDK

C1608X5R0J106M

2112705

Pull-Up resistors 100k Ohms

R1, R2

0603

Multicomp

MC0063W06031%100K 9330402

I2C Pull-Up resistors 1,5k Ohms

R12, R13

0603

Multicomp

MC0063W06031%1K5 9330607

Bi-color Led resistors 270 Ohms

R3, R4

0603

Multicomp

MC0063W06031%270R 9330917

SMD Led Red / Green

SOT-23

Kingbright

KM-23ESGW

1142614

SMD switchs

SW1, SW2

Multicomp

DTSM-32S-B

9471898

3.0V Vref

SOT-23

Texas Ins-

trument

REF3330AIDBZT

1755084

USB Bridge

Led resistors 270 Ohms

R10, R11

0603

Multicomp

MC0063W06031%270R 9330917

Decoupling capacitors 100nF

C6, C9

0402

Multicomp

MCCA000050

1758896

Filter capacitor 10µF

0603

TDK

C1608X5R0J106M

2112705

SMD chip bead

FB1

0603

TDK

MMZ1608R601A

1669700

Rx Led - Green

0603

Vishay

VLMG1300-GS08

2251461

Tx Led - Orange

0603

Vishay

VLMO1300-GS08

2251473

FT230XS USB to UART

16SSOP

FTDI

FT230XS

2081321

Micro-USB type A-B female

SMD

Molex

47590-0001

1568022

USB Type A male

SMD

Multicomp

MC32605

1696546

Male headers 1x3

J3, J4

2mm

Fisher

SLY1.085.50G

9729135

Jumpers 2mm black

Harwin

M22-1900005

510932

GPIO Connectors

Male headers GPIO (2 x 19 pins) P1, P2

2,54mm

Fischer

SL1.025.36Z

9729038

Table

6 – BOM by functional block

Note

: Components used on Board may change for functionnally equivalent references without prior

notice

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page 21 /

LPC1224_BO_SRM

Board v0.3

7.2.2 Easy order version

Part Description

Ref

Module

Nb Vendor

Vendor ref

Farnell

ref

LPC1224

LQFP48

NXP

LPC1224FBD48/101

1862465

FT230XS USB to UART

16SSOP

FTDI

FT230XS

2081321

SMD chip bead

FB1

0603

TDK

MMZ1608R601A

1669700

Decoupling capacitors 100nF

C2,

C3,

C4, C6, C9 0402

Multicomp

MCCA000050

1758896

Filter capacitor 10µF

C1, C5

0603

TDK

C1608X5R0J106M

2112705

Pull-Up resistors 100k Ohms

R1, R2

0603

Multicomp

MC0063W06031%100K 9330402

I2C Pull-Up resistors 1,5k Ohms

R12, R13

0603

Multicomp

MC0063W06031%1K5 9330607

Led resistors 270 Ohms

R3,

R4,

R10, R11

0603

Multicomp

MC0063W06031%270R 9330917

SMD Led Red / Green

SOT-23

Kingbright

KM-23ESGW

1142614

Rx Led - Green

0603

Vishay

VLMG1300-GS08

2251461

Tx Led - Orange

0603

Vishay

VLMO1300-GS08

2251473

SMD switchs

SW1, SW2

Multicomp

DTSM-32S-B

9471898

Micro-USB type A-B female

SMD

Molex

47590-0001

1568022

USB Type A male

SMD

Multicomp

MC32605

1696546

Male headers 1x3

J3, J4

2mm

Fisher

SLY1.085.50G

9729135

Jumpers 2mm black

Harwin

M22-1900005

510932

Male headers GPIO (2 x 19 pins) P1, P2

2,54mm

Fischer

SL1.025.36Z

9729038

Table

7 – BOM by reference

Note

: Components used on Board may change for functionnally equivalent references without prior

notice

7.3 Document revision History

Version

Date

Author

Information

0.3a

April 12, 2015

Nathaël Pajani

Initial revision

0.3b

September 10, 2015

Nathaël Pajani

Changes according to code organisation modifica-

tions

7.4 Disclaimer

The LPC1224 break-out board is provided "as is" without warranty of any kind, either expressed or implied,

including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The

entire risk as to the quality and performance of the LPC1224 break-out board is with you. Should the LPC1224

break-out board prove defective, you assume the cost of all necessary servicing, repair or correction.

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