STMicroelectronics STM32 Cortex-M3, Руководство пользователя

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2.5 Development Boards
1 Intro
2 Electrocardiogram ( Ecg ) Signals
The Electrocardiogram (
Ecg
)
•
Ecg
: electrical manifestation of heart activity recorded
from the body surface
•
monitoring of heart rate
The
Ecg
signal can be recorded fairly easily with surface
electrodes placed on the limbs and/or the chest, see pages 6 – 16
below.
Josef Goette 2 2009
2.4.4 Interfaces
To be able to communicate with other devices we need interfaces:
•
JTAG - Debug Interface:
The JTAG interface allows downloading the compiled code into the microcontroller and
debugging the code in real time. To be able to do this operation you have to use an JTAG
adapter to the USB or parallel port to the computer.
•
USB - Universal Serial Bus:
Using a library one can communicate with an USB master. If you power the device over
USB, no wallplug or external power supply is needed.
•
RS232, CAN, SPI I
2
C, I
2
S:
The serial interfaces can be used to communicate with any kind of devices or can be used
as debug/status interface.
2.5 Development Boards
We use the Olimex boards with our own BFH mother board extension. On both of these boards
the ARM Cortex M3 STM32F103RB produced by ST Microelectronics is present.
Both boards offer a LED on port PC12 (if LED E is bridged) and a button on PA0 (wake-up).
STM-H103
development board
Users Manual
Rev.A, February 2008
Copyright(c) 2008, OLIMEX Ltd, All rights reserved
Figure 2.3: Development Board STM32H103 from
Olimex
Figure 2.4: Development Board STM32P103 from
Olimex
2.5.1 STM32H103 from Olimex
The STM32H103 is the minimal version of the Olimex STM32 board. It contains only a STM32F103RB
processor, USB connector with power adapter and LEDs. The STM32H103 can be connected via
the extension headers to the BFH mother board to connect to other interfaces. See Chapter
2.5.5
for more details.
Lukas Kohler 9