MICRO ROBOTICS 5905 Manuel utilisateur

WARNING: Users of Micro-Robotics Control Equipment should be aware of the possibility of a system failure, and must consider the

implications of such failure. Micro-Robotics Ltd. can accept no responsibility for loss, injury, or damage resulting from the failure of our

equipment. Use of our products in applications where their failure to perform as specified could result in injury or death is expressly

forbidden.

The Old Maltings fax: +44 (0) 1223 524242

135 Ditton Walk sales@microrobotics.co.uk

Cambridge www.microrobotics.co.uk

CB5 8QB

Doc D041 V20090119 VM2 Breakout Board Page 1 of 3

VM2 Breakout Board

5905

VM2 Breakout Board

Introduction

The 5905 Breakout Board for the VM2 Controller provides interfaces to the VM2’s first RS232 serial port; the

first I2C bus, and a regulated supply voltage. All of the VM2’s connector pins are taken out to two prototyping

areas so you can prototype your VM2 application.

I2C Bus 1

Prototype Area:

Groups of 6 pads connected with cuttable tracks.

0.1" Grid, 2mm pads, 1mm hole, Plated through.

Indication of grouping on silk screen.

4 off 3.5 mm holes on

142 x 92 mm rectangle.

Reg

Power

VM2

Serial

Size - 150 x 100mm

Reset

Prog Mode

Default Com

Upload OS

[nc]

VCC

GND

SCL

SDA

Serial IC

Socket

EEPROM

Socket

Unpacking

You should have:

• 5905 Breakout Board

• Power Connector

• These instructions

Doc D041 V20090119 VM2 Breakout Board Page 2 of 3

What you will need

To start using the application board you will also need:

• VM2 Control Module (5900)

• 3.5 to 16V, 100mA, unregulated DC power supply.

• An RS232 serial lead to connect the 5905 to your host computer (you can use our product 5529)

• A PC running our VenomIDE development tool, or other terminal emulation software (for example,

Hyper Terminal)

Switches

There is a group of four DIP switches and a single pushbutton switch fitted to the Breakout Board. These are

connected to several pins on the VM2’s JP1.

Reset button

Pressing this button shorts the VM2’s Reset input to GND, which resets the VM2.

DIP switches

Most of the time you are only likely to use the Prog Mode switch.

Prog Mode This switch puts the VM2 into program mode by shorting JP1 pin 1 to GND. This

allows you to develop your application program.

[Not used]

Default Com This switch forces the VM2 into its default communication mode by shorting JP1

pin 5 to GND. This is not normally necessary.

Upload OS This switch puts the VM2 into Upload OS mode by shorting JP1 pin 4 to Vcc.

This allows you to program the VM2 with a new version of the Venom2

Language using a special boot loader program on your PC, communicating over

serial port 1.

Serial Port 1 RS232

The 5905 has an RS232 level shifter IC to allow the VM2 to talk to a host PC. This IC is fitted in a socket in

case you need to remove it for your application.

Pinout

Connector: J1 - 9 way D-Type plug

Pin 1 2 3 4 5 6 7 8 9

Channel 13 14 12 11

Signal * RXD TXD * GND * RTS CTS N/C

* - These pins are connected to each other on the 5905.

Configuration

Serial port 1 is configured for you in the default startup procedure with something like the following line.

MAKE serial SerialPort(115200,1,1)

I2C Bus

Connector J2. Pinout printed on the board.

Configuration

MAKE net I2CBus ;creates the first bus

MAKE net I2CBus(1) ;[does same as above]

Doc D041 V20090119 VM2 Breakout Board Page 3 of 3

Power Supply

The 5852 may be powered from a supply voltage range of less than 4V, up to 16 volts unregulated DC. The

current consumption depends upon what is attached to the unit and whether the processor is idle, but is

usually around 25 – 50mA.

The board has a very low dropout regulator that can operate with a supply voltage just above it’s output

voltage. There is a silicon diode before the regulator to protect against reverse polarity on the supply input,

but this may be bypassed using the link LK 1, if you want to run the board on as low an input voltage as

possible.

The regulator doesn’t have a high capacity heat sink – just a wide copper area on the board so can’t support

much more than 1 watt of power dissipation at room temperature. Be careful of the regulator – it can get

very hot if you over load it.

To calculate the power dissipation in the regulator use P = I * (Vin – (3.3+0.7))

Where I is the total current in Amps and Vin is the input voltage. Don’t use the 0.7 value if you bypass the

diode.

Pinout

Connector: J3 - 2 way pluggable screw terminal. Plug provided.

Prototyping areas

The two prototyping areas at each end of the board have sets of pads on a 0.1” pitch.

The pins of the VM2 have been expanded to two sets of connector positions, BC1 and BC2, in a one-to-one

pattern. You can use these positions to take VM2 signals to the prototyping areas with hook-up wire, or fit

0.1” connectors into them.

Here is the VM2 pinout:

JP1

JP2

GND

BOOT

GND

RESET

$28 SCL1

$29 SDA1

GND

$19 TX1

$1A RX1

$72 RTS1

$73 CTS1

$3A TX4

$3B RX4

$76 RTS4

$77 CTS4

GND

$2C SPI2 CS

$2D SPI2 CLK

$2E SPI2 MISO

$2F SPI2 MOSI

PROG

VCC

DFLT

LED $7F

CAN TX $1C

CAN RX $1B

VCC

TX5 $3C

RX5 $42

RTS5 $38

CTS5 $78

TIM1.1 $18

TIM4.1 $26

TIM8.1 $36

TIM8.2 $37

VCC

TX3 $2A

RX3 $2B

RTS3 $74

CTS3 $75

EXT spare $56

EXT A0 $52

EXT D0 $60

EXT D1 $61

EXT D2 $62

EXT D3 $63

GND

EXT D4 $64

EXT D5 $65

EXT D6 $66

EXT D7 $67

GND

TX2 $12

RX2 $13

RTS2 $7B

CTS2 $43

TIM5.2 $11

TIM5.1 $10

GND

ADC $30

ADC $32

ADC $34

$7D EXT RD or E

$7E EXT WR or R/W\

$68 EXT D8

$69 EXT D9

$6A EXT D10

$6B EXT D11

GND

$6C EXT D12

$6D EXT D13

$6E EXT D14

$6F EXT D15

GND

$14 SPI1 CS

$15 SPI1 CLK

$16 SPI1 MISO

$17 SPI1 MOSI

$70 SPI ADDR 0

$71 SPI ADDR 1

GND

$31 ADC

$33 ADC

$35 ADC

You should also refer to the tables of pin functions in the VM2 datasheet.

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