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virt2real.ru • Просмотр темы - SPI. Master In Slave Out Где на плате?
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SPI. Master In Slave Out Где на плате?

СообщениеДобавлено: 15 сен 2015, 14:48
nwnclv
Приветствую опять.

вот Схема пинов.
Я вижу SPI0_SCLK, SPI0_SS, SPI0_MOSI, но не вижу SPI0_MISO. Где он? Окружные пины пробовал (а то вдруг просто не попало в вики) результата нет.
Куда воткнуться?

Re: SPI. Master In Slave Out Где на плате?

СообщениеДобавлено: 15 сен 2015, 19:29
eagafonov
Вуа-ля! Вдумчивое курение исходников ядра и даташитов говорит, что
SPI0_SS это slave select в slave-mode, а в master-mode это как раз SPI0_SOMI, он же SPI0_MISO

http://www.ti.com/lit/ds/symlink/tms320dm365.pdf
страница 37

CON40, он же GPIO23, он же PWM0, он же SPI0_SS, он же SPI0_SOMI

В железе не проверял, догадка только, но уж очень правдаподобная.

Ещё мануал говорят, что на dm365 аж 5 SPI:

SPI1 - на GPIO26,27,28
SPI2 - на GPIO29,30,31,32
SPI3 - на GPIO100,101,102,103 (не выведен на гребёнку) - Карта MMC случайно не на нём живёт?
SPI4 - на GPIO34,35,36,37

Вопрос - Эти SPI задействовать без пиления кода ядра?
Вопрос важный, ответ на него может подстегнуть допиливание ArduCopter'а для виртурилки.

Re: SPI. Master In Slave Out Где на плате?

СообщениеДобавлено: 16 сен 2015, 23:57
eagafonov

Re: SPI. Master In Slave Out Где на плате?

СообщениеДобавлено: 19 сен 2015, 14:24
nwnclv
Вот ведь засада. Ядро пересобирать не охота. :) ладно пока на малине поднял стенд.

Re: SPI. Master In Slave Out Где на плате?

СообщениеДобавлено: 19 сен 2015, 20:18
eagafonov