[Ovmsdev] max7317 input read

[Mark Webb-Johnson]

The pin on the internal expansion connector, right? Not the external 26 pin expansion socket?

Regards, Mark.

> On 10 Jul 2019, at 4:50 PM, - - <egon at heuer-humfeld.de> wrote:
> 
> I have the egpio5 (port 6) pin on GND.
> then in the shell: egpio input 6.
> 
> then the gpio5 (port 6) pin to 3.3V.
> then in the shell: egpio input 6.
> 
> both return 0
> 
> Regards Thomas
>> Michael Balzer <dexter at expeedo.de> hat am 10. Juli 2019 um 10:40 geschrieben: 
>> 
>> 
>> Then you're now doing something wrong. Please describe your test setup. 
>> 
>> Regards, 
>> Michael 
>> 
>> 
>> Am 10.07.19 um 10:35 schrieb - -: 
>>> Hi,
>>> 
>>> 
>>> i have test it, but it seems not to work.
>>> it return always 0 when i put the egpio to GND or 3.3v
>>> 
>>>> Michael Balzer dexter at expeedo.de hat am 9. Juli 2019 um 22:58 geschrieben: 
>>>> 
>>>> I did some tests myself, it turned out there was more to do here. 
>>>> 
>>>> 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. 
>>>> 
>>>> Fix is pushed. I've also added an "egpio input" shell command. 
>>>> 
>>>> Regards, 
>>>> Michael 
>>>> 
>>>> 
>>>> Am 09.07.19 um 20:00 schrieb 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
>> 
>> 
>> 
>> -- 
>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
> 
> 
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