From: Rob Sacks (editor_at_realization.org)
Date: 2000-10-21 16:24:56
Hi Joerg,
Sure, I'll do this. Only problem is I'm going away
today for eight days. I'll email you about it when
I get back.
Right now the program can show an oscilloscope
trace like you want. However it only handles two
channels and can only show two waveforms. Do
you need to see all six at once, or is it ok (for now)
if I just give you a menu to select which two channels
to see at one time?
Do I need to do anything with the switch byte?
Regards,
Rob
----- Original Message -----
From: "Joerg Hansmann" <jhansmann_at_g...>
To: <buildcheapeeg_at_egroups.com>
Sent: Saturday, October 21, 2000 10:39 AM
Subject: [buildcheapeeg] Software
> Hi Rob and everyone,
>
> <yaniv_vi_at_yahoo.com> wrote:
> >software :
> >rob sacks is working has finished a pre-beta version of his software .
> >it does mind mirror and includes phase coherence.
> >it lookes very nice.
>
>
> I have written the firmware for the Atmel-Processor (AT90S4433)
> in the RS232EEG Prototype board and tested it with a terminal program.
> For more testing however I need some sort of visualization.
> (best oszilloscope-like AD-Value(y-axis) over time(x-axis)).
> Protocol/transmission errors should be recorded for debugging purposes.
>
> Could you implement the following communication protocol ?
>
> The Atmel-processor transmits 200 times per second the following data block
> to the PC:
> $a5 :1. sync byte
> $5a :2. sync byte
> $01 :version byte
> ch1_low_byte
> ch1_high_byte
> ch2_low_byte
> ch2_high_byte
> ch3_low_byte
> ch3_high_byte
> ch4_low_byte
> ch4_high_byte
> ch5_low_byte
> ch5_high_byte
> ch6_low_byte
> ch6_high byte
> switches: 1 byte digital inputs (PD2..PD5) in the lower 4 bits.
>
> all together 16 byte.
>
> From the AD-channel-data only the lower 10 bit are used as unsigned
> integer.
> The remaining 6 high bits are 0.
>
> RS232 transmission parameters are:
> 1 startbit, 8 data bits, 1 stopbit, no parity, 57600 baud
>
> At the moment communication direction is only from Atmel-processor to PC.
> The hardware however supports full duplex communication. This feature
> will be used in later firmware releases to support the PWM-output and
> LED-Goggles.
>
>
> best regards,
>
> Joerg Hansmann
>
>
>
>
>
>
> To unsubscribe from this group, send an email to:
> buildcheapeeg-unsubscribe_at_egroups.com
>
>
>
This archive was generated by hypermail 2.1.4 : 2002-07-27 12:28:27 BST