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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="moz-cite-prefix">Am 09.07.19 um 20:00 schrieb Michael
Balzer:<br>
</div>
<blockquote type="cite"
cite="mid:c080d2e1-9fb4-cf86-d516-6a6b375d2392@expeedo.de">
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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="moz-cite-prefix">Am 09.07.19 um 13:10 schrieb - -:<br>
</div>
<blockquote type="cite"
cite="mid:102947694.457239.1562670612610@email.ionos.de">
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charset=UTF-8">
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<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>
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Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
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<pre class="moz-signature" cols="160">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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