Datasheet

SW4

SW2

SW3

SW1

Evaluation of ECG and Respiration Specific Functions

www.ti.com

Figure 34. Switch Positions

The function of each switch is defined in the following table:

Switch Number Description

SW1 This switch is used to enable boot strap loader (BSL) MSP430 firmware.

SW2 Unused

SW3 This switch is used for hard reset of the board. The board will reset and start again with the firmware loaded.

SW4 Unused

5.9 Visual Indication

The demonstration kit has two LEDs to indicate various operating states. The flashing green LED (D2)

indicates the ADS1x9xECG-FE is in the idle state and steady blue LED (D1) indicates the micro-controller

is busy in servicing requests from the PC application.

6 Evaluation of ECG and Respiration Specific Functions

The micro-controller receives the two-channel data from ADC through the SPI interface to send to the PC.

The software is designed to handle the following activities:

• Data acquisition

• ADC Lead off detection

• DC signal removal

• Multi band pass filtering

• ECG lead formation

• QRS (HR) detection

• RR Detection

• USB communication

• Firmware upgrade through USB

The high level architecture of the firmware implementation for the ADS1292R is given below:

ADS1x9xECG-FE Demonstration Kit SLAU384A–December 2011–Revised April 2012

Submit Documentation Feedback