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virt2real.ru • Просмотр темы - USART Multi-processor Communication Mode




 

Управляем чем угодно откуда угодно

USART Multi-processor Communication Mode

Виртурилка, 3G/4G, WiFi, моторчики, датчики, GPS и прочее - питание, драйвера, совместимость и т.д.

USART Multi-processor Communication Mode

Сообщение Kudesnick » 01 ноя 2013, 11:36

Имеется набор исполнительных механизмов на atmega8. Управляются они по USART в режиме "Multi-processor Communication Mode". Отсюда вопрос: можно ли виртуриловский UART настроить на режим %speed%e9, т.е. 9 бит данных плюс паритет. И реально ли разогнать его до 2 Мбод? Виртурилки пока нет, так что сам поковырять не могу. Собственно, хочу выбрать платформу, которая без дополнительных аппаратных приблуд могла бы работать по UART с конфигурацией 2000000e9.
Как железный вариант рассматриваю самопальный переходник SPI/USART на тиньке.
Kudesnick
 
Сообщения: 4
Зарегистрирован: 01 ноя 2013, 11:17
Откуда: г. Владимир

Re: USART Multi-processor Communication Mode

Сообщение phoenix367 » 01 ноя 2013, 12:42

9 бит данных за раз передавать по UART нельзя, максимум 8. Паритет выставить можно. До 2 мбит должен разогнаться без особых проблем. Я до 1 мегабита пробовал разгонять - все ок. Согласно даташиту стр. 158, табл. 6-60 UART до 5 мегабит разогнать можно. Это, кстати, и Gol'у ответ на его вопрос.
phoenix367
 
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Зарегистрирован: 09 сен 2013, 00:19

Re: USART Multi-processor Communication Mode

Сообщение Kudesnick » 07 ноя 2013, 13:51

Спасибо за исчерпывающий ответ. Будем паять переходник..
Kudesnick
 
Сообщения: 4
Зарегистрирован: 01 ноя 2013, 11:17
Откуда: г. Владимир


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