MICRO ROBOTICS 5905 User manual

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