{"id":1346,"date":"2015-10-30T17:32:15","date_gmt":"2015-10-30T15:32:15","guid":{"rendered":"http:\/\/tinusaur.org\/?page_id=1346"},"modified":"2022-01-01T23:04:05","modified_gmt":"2022-01-01T21:04:05","slug":"usiuartx","status":"publish","type":"page","link":"https:\/\/tinusaur.org\/projects\/usiuartx\/","title":{"rendered":"USIUARTX"},"content":{"rendered":"

There\u2019s no UART<\/strong> on ATtiny85<\/strong> so we\u00a0had to write our\u00a0own library that\u00a0takes advantage on the built-in USI<\/strong> unit\u00a0– the\u00a0library is called USIUARTX<\/strong>.<\/p>\n

This work is largely influenced by Atmel application note AVR307: Half Duplex UART Using the USI Module<\/a>.<\/p>\n

UART communication looks like this:<\/p>\n

\"UART<\/a><\/p>\n

 <\/p>\n

References<\/h1>\n

The source code available\u00a0at\u00a0https:\/\/bitbucket.org\/tinusaur\/usiuartx<\/a><\/p>\n

Atmel application note AVR307: Half Duplex UART Using the USI Module<\/a><\/p>\n

Discussion about “Using USI as a UART in the ATtiny 25\/45\/85”
\nhttp:\/\/www.avrfreaks.net\/forum\/using-usi-uart-attiny-254585<\/a><\/p>\n

Discussion about “rs232 \/ microcontroler” (in German)
\nhttp:\/\/www.mikrocontroller.net\/topic\/51347<\/a><\/p>\n

Source code that solves some issues:
\nnewer:\u00a0http:\/\/www.mikrocontroller.net\/attachment\/18859\/USI_UART.c<\/a>
\nolder:\u00a0http:\/\/www.mikrocontroller.net\/attachment\/18831\/USI_UART.c<\/a><\/p>\n

Simple ATtiny USI UART:\u00a0http:\/\/www.technoblogy.com\/show?RPY<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

There\u2019s no UART on ATtiny85 so we\u00a0had to write our\u00a0own library that\u00a0takes advantage on the built-in USI unit\u00a0– the\u00a0library is called USIUARTX. This work is largely influenced by Atmel application note AVR307: Half Duplex UART Using the USI Module. UART communication looks like this:   References The source code available\u00a0at\u00a0https:\/\/bitbucket.org\/tinusaur\/usiuartx Atmel application note AVR307: Half … Read more<\/a><\/p>\n","protected":false},"author":54,"featured_media":1357,"parent":654,"menu_order":17,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"yoast_head":"\nUSIUARTX - The Tinusaur Project<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tinusaur.org\/projects\/usiuartx\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"USIUARTX - The Tinusaur Project\" \/>\n<meta property=\"og:description\" content=\"There\u2019s no UART on ATtiny85 so we\u00a0had to write our\u00a0own library that\u00a0takes advantage on the built-in USI unit\u00a0– the\u00a0library is called USIUARTX. This work is largely influenced by Atmel application note AVR307: Half Duplex UART Using the USI Module. UART communication looks like this:   References The source code available\u00a0at\u00a0https:\/\/bitbucket.org\/tinusaur\/usiuartx Atmel application note AVR307: Half ... 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