<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<div class="moz-cite-prefix">Then you're now doing something wrong.
Please describe your test setup.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
Am 10.07.19 um 10:35 schrieb - -:<br>
</div>
<blockquote type="cite"
cite="mid:189449415.7104.1562747724943@email.ionos.de">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="UTF-8">
<p>Hi, </p>
<p>i have test it, but it seems not to work.<br>
it return always 0 when i put the egpio to GND or 3.3v</p>
<blockquote type="cite">Michael Balzer <a class="moz-txt-link-rfc2396E" href="mailto:dexter@expeedo.de"><dexter@expeedo.de></a>
hat am 9. Juli 2019 um 22:58 geschrieben: <br>
<br>
I did some tests myself, it turned out there was more to do
here. <br>
<br>
First, the max7317 really needs 16 bits for every command.
Second, the reads were done on the output level registers,
inputs are mapped to bit fields in 0x0e & 0x0f. Third, the
max7317 needs a deselect between the tx and the rx. No, really,
I've tried even half duplex mode, the deselect really is
necessary. <br>
<br>
Fix is pushed. I've also added an "egpio input" shell command. <br>
<br>
Regards, <br>
Michael <br>
<br>
<br>
<div class="ox-b543c9b284-moz-cite-prefix">Am 09.07.19 um 20:00
schrieb Michael Balzer: <br>
</div>
<blockquote type="cite">Thomas, <br>
<br>
there may be a bug in the max7317 component: <br>
<blockquote><tt>uint8_t max7317::Input(uint8_t port)</tt> <br>
<tt>…</tt> <br>
<tt> uint8_t* p = m_spibus->spi_cmd(m_spi, buf, 1, 1,
port + 0x80);</tt> <br>
</blockquote>
According to the max7317 specsheet the read operation needs a
second (dummy) byte. So this should be… <br>
<blockquote><tt> uint8_t* p = m_spibus->spi_cmd(m_spi,
buf, 1, 2, port + 0x80, 0);</tt> <br>
</blockquote>
Please try & report. <br>
<br>
Regards, <br>
Michael <br>
<br>
<br>
<div class="ox-b543c9b284-moz-cite-prefix">Am 09.07.19 um
13:10 schrieb - -: <br>
</div>
<blockquote type="cite">
<p>Hello,<br>
</p>
<p>How can I read inputs from max7317.<br>
when I try to log ESP_LOGD(TAG,"EGPIO5 input: %d",
MyPeripherals->m_max7317->Input(MAX7317_EGPIO_5));<br>
</p>
<p>i get allways 0 when i put the egpio pin to GND or 3.3v<br>
do i somthing wrong or does it not work.<br>
</p>
<p>Regards Thomas<br>
</p>
<br>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="144">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
</pre>
</body>
</html>