DSerial

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Contents 1 DSerial Software 1.1 Files 1.2 DS Side 1.3 Microcontroller Side 2 DSerial Hardware 2.1 DSerial Components 2.2 Schematic 2.3 Additional Pictures

DSerial Software

Files

Go to downloads

DS Side

• DSerial Library
• Examples

Microcontroller Side

• Bootloader
• Firmware
• Build tools

DSerial Hardware

DSerial Components

DSerial uses ICs that require very few components.

Symbol	Package	Description
MCU	LQFP-32	Silicon Laboratories C8051F320 USB microcontroller
ACCEL	E-8	Analog Devices ADXL311 dual axis accelerometer
MAX	TSSOP-16	Texas Instruments MAX3221 Single-Channel RS-232 Line Driver/Receiver
LED1, LED2	0805	Status LEDs
R1	0603	2kOhm resistor (not needed)
R2	0603	1MOhm resistor (for ACCEL)
R3, R4	0603	current-limiting resistors (around 47Ohm)
C1, C2, C3, C4, C5	0603	0.1uF ceramic capacitors
C6	0603	0.1uF ceramic capacitor (decoupling cap for MCU)
C7, C8, C9	0603	0.1uF ceramic capacitors (for ACCEL)

DSerial provides the following connectors.

Symbol	Number of contacts	Description
USB	6	Mini USB connector
RS232	3	RS232 level UART
IO1	12	First IO connector
IO2	12	Second IO connector
PROG	4	Programming connector (initial programming)
SLOT	17	DS Slot connector

There are also a couple of solder jumpers.

Symbol	Default	Description
PWR	Disabled	Enables USB powered mode
INV	Disconnected	Connects MAX3221 serial line sense to P0.7 of C8051F320. This could be used to detect whether a serial port is connected.
X, Y	Analog	Selects duty cycle or analog mode for the accelerometer

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Schematic

Additional Pictures