Hi Udo,<div><br></div><div>Great!</div><div><br></div><div>Just to be sure, is the version I have not compatible with 3v3 / y-port node, or do you think that mine is broken / wrong assembled?</div><div><br></div><div>Regards,</div>
<div><br></div><div>Bart<br><div><br><div class="gmail_quote">2013/3/23 Bart Theeuwes <span dir="ltr"><<a href="mailto:bart.theeuwes@gmail.com" target="_blank">bart.theeuwes@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<div><br></div><div>Ok, I think I found the problem. I tested it with the FTDI cable; this works perfect.</div><div><br></div><div>The big difference between the FDTI cable and the y-port node;</div><div>The FTDI cable supplies the ir kopf with 5V, the Y-Port node 3v3. </div>
<div><br></div><div>So I measured the signals with the scope and the output levels to the D1 ir led are very poor.</div><div>I also notished some crosstalk of the tx circuit on the rx circuit. At first, I thought that the receiver was picking up the signal from the transmitter led because of reflections, but it apears that I don't see this issue when I connect the ir kopf to the ftdi cable.</div>
<div><br></div><div>I have the ir lesekopf based on this schematic and circuit board:</div><div><a href="http://wiki.volkszaehler.org/_media/hardware/controllers/sende-lesekopf5.png?cache=" target="_blank">http://wiki.volkszaehler.org/_media/hardware/controllers/sende-lesekopf5.png?cache=</a></div>
<div><a href="http://wiki.volkszaehler.org/_media/hardware/controllers/sende-lesekopf_bestueckung.png?cache=" target="_blank">http://wiki.volkszaehler.org/_media/hardware/controllers/sende-lesekopf_bestueckung.png?cache=</a></div>
<div><br>
</div><div>any ideas how to modify the circuit to get this working?</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Bart</div></font></span><div class="HOEnZb"><div class="h5"><div><br><div class="gmail_quote">
2013/3/21 Bart Theeuwes <span dir="ltr"><<a href="mailto:bart.theeuwes@gmail.com" target="_blank">bart.theeuwes@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Udo,<div><br></div><div>Many thanks for that. </div><div>However, I still did not success in receiving data from the meter.</div>
<div>I finaly found some time to do some debugging.</div><div><br></div><div>I now connected a ftdi cable directly to the yport node. I notished one thing, when I am sending data to the yport node, i'm losing bytes, but the data streams are less then 511 bytes (buffer length).</div>
<div>I also notished when I send data from the yport node to the fdti cable, there are some 'pauses' between pieces of transmission, I don't know if this affects the meter.</div><div><br></div><div>I am wondering one thing; is the low baudrate possible with the supplied clock of 12,5 Mhz? I couldn't find if any clock divider is used, whats the main clock speed of the cpu?</div>
<div><br></div><div>Regards Bart</div><div><div><div><br><div class="gmail_quote">2013/2/24 Udo1 <span dir="ltr"><<a href="mailto:udo1@gmx.net" target="_blank">udo1@gmx.net</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Am 24.02.2013 13:22, schrieb Bart Theeuwes:<div><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I reconfigured ethersex so it uses 300 bps and 7E1 on the second uart port (default).<br>
</blockquote></div>
Hi Bart,<br>
<br>
there is a problem in ethersex adjusting the framerates.<br>
I send you a link to a personal version I used with the yport-node.<br>
<br>
Regards<br>
Udo<br>
</blockquote></div><br></div>
</div></div></blockquote></div><br></div>
</div></div></blockquote></div><br></div></div>