Hi everybody
i need to know how the ecg system implemented onto this kit transmitts data over UART.
in the datasheet it says:
3.8 Universal Asynchronous Receiver/Transmitter (UART)
The data sent to the PC through UART has eight ECG lead data; these signals are sent at 250 sps/lead. The PC application derives the remaining four ECG leads using Lead I and Lead II.
A synchronization frame (header) of 5 bytes is also sent to rhe UART interface every 1 s. the packet number, heart rate, and lead status are sent along with with ecg header. The header is followed by interleaved samples of eight ECG leads. The intereval betweem the two ECG data packet is 500 us. The packet number gets incremented for every new sample sent.
The UART configuration is set as 115200 bps, 8 bits data, 1 stop bit and no parity
this is included in the following link http://www.ti.com/litv/pdf/sprab36b page 16
My question is: How the ecg leads data are interleaved?
I need to extract Lead II data, How to do that?
Thanx in advance
