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Documentation to construct a SIMPLE RS-232
to I2C ADAPTER is available for FREE
DOWNLOAD. For advanced users, the 'C' Language Source Code
is available for low-cost purchase.
This adapter is ideal for
evaluating TareTronics SMART LED
DISPLAY MODULES. It may also be used to transmit hex data
bytes or ASCII strings to any I2C Slave device. To demonstrate
capabilities of the SMART LED DISPLAY MODULE, the adapter can
periodically measure and display the ambient temperature.
Description
- Interfaces to an RS-232 Serial Port on
a PC.
- Interfaces to a standard 100 KHz I2C
Bus as a transmit only Master Device.
- Uses HyperTerminal (available on most
Windows operating systems).
- Hex data bytes and ASCII
character strings may be transmitted to I2C Slave devices (such as
SMART LED DISPLAY MODULES).
- The I2C Acknowledge bit is read
to indicate success or failure of transmission.
- Command code 'ctrl T' will cause the
ADAPTER to display ambient temperature on SMART LED DISPLAY
MODULES.
- Requires a 5 VDC regulated power
supply.
Construction
Documentation
The ADAPTER uses a Microchip PIC16F872; a
MAX232; and an LM34 temperature sensor. A small general purpose
printed circuit board from Dontronics
(their Part No. DT106) provides a convenient platform for
construction, although a solderless breadboard may also be
used. Information needed for construction and operation is
available for FREE DOWNLOAD using the following
links:
- Download Instructions
~360KB..............................
- Download
Schematic ~500KB.................................
- Download
Firmware ~12KB.....................................
C Language Source
Code
The firmware for the RS232 to I2C Adapter
was written in the C Programming Language and compiled
with a PIC C Compiler from Forest Electronic Developments in
the UK.
Users who wish to modify or customize the
operation of the RS232 to I2C Adapter will need this
source code. Also, this source code illustrates successful
interface of SMART LED Display Modules to a PIC microcontroller
with an I2C peripheral. Finally, students or hobbyists may find this
source code of interest as an example of programming a PIC
microcontroller with a high level language.
Order your copy today
! A 3.5" diskette containing the commented source
code in an ASCII file, a printed copy, and copies of the free
download material will be promptly mailed. The C
Compiler is NOT included. It may be purchased from Dontronics.
| C Language Source Code for RS232 to I2C
Adapter
PN
G0600CI2RS............................$22.95 +
S&H
Standard Shipping - US
Mail |
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Disclaimer and Conditions of Use
for the RS232 to I2C Adapter:
- This design and design documentation
have No Warranty whatsoever, either express or
implied.
- TareTronics, Inc. is not responsible
for the suitability of this design for any
application.
- This design or assembled products
using this design may not be sold without the written consent
of TareTronics, Inc.
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