<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
hi Michael,<br>
<br>
Good try, but the whole system hangs, so I'm guessing that we're
stuck in an infinite interrupt loop. But that suggests that the
issue is related to unbalanced interrupt processing somehow.<br>
<br>
I'm going to try for some diagnostic logging once it gets stuck, and
see if I can identify its state. The absolute reproducibility of
the base issue leads me to think the reported empty interrupt issue
(your prior email) is probably not it, but rather the driver is not
handling some confluence of events properly. I have no trouble
running the HUD display, for example, but it doesn't produce the
rapid transmit frames of the OBDWiz dongle. Something about the
transmit side is messing up the receive... I wonder if we're
getting an interrupt for both the last Tx frame being sent and the
VIN request PID being received at the same time? Transmit
interrupts don't check for receive, and vice-versa.<br>
<br>
Will report back later today...<br>
<br>
Greg<br>
<br>
<br>
<div class="moz-cite-prefix">Michael Balzer wrote:<br>
</div>
<blockquote type="cite"
cite="mid:6124be5d-abf7-5cf2-008f-b2231d809726@expeedo.de">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
Greg,<br>
<br>
here's another report of level triggering solving the issue: <a
class="moz-txt-link-freetext"
href="https://community.nxp.com/thread/456907"
moz-do-not-send="true">https://community.nxp.com/thread/456907</a><br>
<br>
Can you please give that a try? I.e. change line 77 to:<br>
<br>
<tt> gpio_set_intr_type((gpio_num_t)m_intpin,
GPIO_INTR_LOW_LEVEL);</tt><br>
<br>
<br>
I'll also get a DB9 plug to implement Marks test solution.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 14.01.2018 um 17:52 schrieb
Michael Balzer:<br>
</div>
<blockquote type="cite"
cite="mid:9f4f5d02-a193-0886-9408-ebd058dccbc6@expeedo.de"><br>
<blockquote type="cite"><span style="color: rgb(34, 34, 34);
font-family: "Helvetica Neue", Arial, sans-serif;
font-size: 15px; font-style: normal; font-variant-ligatures:
normal; font-variant-caps: normal; font-weight: 400;
letter-spacing: normal; orphans: 2; text-align: start;
text-indent: 0px; text-transform: none; white-space: normal;
widows: 2; word-spacing: 0px; -webkit-text-stroke-width:
0px; text-decoration-style: initial; text-decoration-color:
initial; display: inline !important; float: none;">Hmmmm</span><span
style="color: rgb(34, 34, 34); font-family: "Helvetica
Neue", Arial, sans-serif; font-size: 15px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans:
2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; text-decoration-style:
initial; text-decoration-color: initial; display: inline
!important; float: none;">, I think level triggered
interrupt would help here</span><span id="selection_url_f"
style="color: rgb(34, 34, 34); font-family: "Helvetica
Neue", Arial, sans-serif; font-size: 15px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans:
2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; text-decoration-style:
initial; text-decoration-color: initial;"></span><span
style="color: rgb(34, 34, 34); font-family: "Helvetica
Neue", Arial, sans-serif; font-size: 15px; font-style:
normal; font-variant-ligatures: normal; font-variant-caps:
normal; font-weight: 400; letter-spacing: normal; orphans:
2; text-align: start; text-indent: 0px; text-transform:
none; white-space: normal; widows: 2; word-spacing: 0px;
-webkit-text-stroke-width: 0px; text-decoration-style:
initial; text-decoration-color: initial; display: inline
!important; float: none;">.</span></blockquote>
<br>
We currently let the interrupt trigger on the negative edge
(line 77). Maybe GPIO_INTR_LOW_LEVEL can help?<br>
</blockquote>
<br>
<pre class="moz-signature" cols="160">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
</pre>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
OvmsDev mailing list
<a class="moz-txt-link-abbreviated" href="mailto:OvmsDev@lists.teslaclub.hk">OvmsDev@lists.teslaclub.hk</a>
<a class="moz-txt-link-freetext" href="http://lists.teslaclub.hk/mailman/listinfo/ovmsdev">http://lists.teslaclub.hk/mailman/listinfo/ovmsdev</a>
</pre>
</blockquote>
<br>
</body>
</html>