[Ovmsdev] max7317 input read

[Michael Balzer]

Thomas,

there may be a bug in the max7317 component:

    uint8_t max7317::Input(uint8_t port)
    …
      uint8_t* p = m_spibus->spi_cmd(m_spi, buf, 1, 1, port + 0x80);

According to the max7317 specsheet the read operation needs a second (dummy) byte. So this should be…

      uint8_t* p = m_spibus->spi_cmd(m_spi, buf, 1, 2, port + 0x80, 0);

Please try & report.

Regards,
Michael


Am 09.07.19 um 13:10 schrieb - -:
>
> Hello,
>
> How can I read inputs from max7317.
> when I try to log ESP_LOGD(TAG,"EGPIO5 input: %d", MyPeripherals->m_max7317->Input(MAX7317_EGPIO_5));
>
> i get allways 0 when i put the egpio pin to GND or 3.3v
> do i somthing wrong or does it not work.
>
> Regards Thomas
>
>
> _______________________________________________
> OvmsDev mailing list
> OvmsDev at lists.openvehicles.com
> http://lists.openvehicles.com/mailman/listinfo/ovmsdev

-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openvehicles.com/pipermail/ovmsdev/attachments/20190709/248218e4/attachment.htm>