GPIO: switching between ALT functions<\/a><\/p>\n pi-gpio-switch <\/a>, Utility to switch Raspberry-Pi GPIO pin functions by Tim Giles 01\/04\/2013 C library for Broadcom BCM 2835 as used in Raspberry Pi<\/a> Device Trees, overlays, and parameters<\/a> RPi Low-level peripherals<\/a> Forum GPIO: switching between ALT functions Tools and Applications pi-gpio-switch , Utility to switch Raspberry-Pi GPIO pin functions by Tim Giles 01\/04\/2013 changing pins works! Raspberry Pi And The IoT In C – Memory Mapped GPIO bcm2835 C library for Broadcom BCM 2835 as used in Raspberry Pi github.com\/SS-JIA\/bcppm2835, A C++ port of Mike’s bcm2835 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7675","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7675","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7675"}],"version-history":[{"count":3,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7675\/revisions"}],"predecessor-version":[{"id":7678,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/7675\/revisions\/7678"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7675"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7675"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7675"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Tools and Applications<\/h2>\n
\nchanging pins works!<\/a>
\nRaspberry Pi And The IoT In C – Memory Mapped GPIO<\/a><\/p>\nbcm2835<\/h4>\n
\ngithub.com\/SS-JIA\/bcppm2835<\/a>, A C++ port of Mike’s bcm2835 C library
\nDevice::BCM2835 – Perl extension for accesing GPIO pins on a Raspberry Pi via the BCM 2835 GPIO<\/a>
\ngithub.com\/jperkin\/node-rpio<\/a>, Raspberry Pi GPIO library for node.js <\/p>\n\r\n\r\n\/*! \\brief bcm2835PortFunction\r\n Port function select modes for bcm2835_gpio_fsel()\r\n*\/\r\ntypedef enum\r\n{\r\n BCM2835_GPIO_FSEL_INPT = 0x00, \/*!< Input 0b000 *\/\r\n BCM2835_GPIO_FSEL_OUTP = 0x01, \/*!< Output 0b001 *\/\r\n BCM2835_GPIO_FSEL_ALT0 = 0x04, \/*!< Alternate function 0 0b100 *\/\r\n BCM2835_GPIO_FSEL_ALT1 = 0x05, \/*!< Alternate function 1 0b101 *\/\r\n BCM2835_GPIO_FSEL_ALT2 = 0x06, \/*!< Alternate function 2 0b110, *\/\r\n BCM2835_GPIO_FSEL_ALT3 = 0x07, \/*!< Alternate function 3 0b111 *\/\r\n BCM2835_GPIO_FSEL_ALT4 = 0x03, \/*!< Alternate function 4 0b011 *\/\r\n BCM2835_GPIO_FSEL_ALT5 = 0x02, \/*!< Alternate function 5 0b010 *\/\r\n BCM2835_GPIO_FSEL_MASK = 0x07 \/*!< Function select bits mask 0b111 *\/\r\n} bcm2835FunctionSelect;\r\n\r\n\/*! \\brief bcm2835PUDControl\r\n Pullup\/Pulldown defines for bcm2835_gpio_pud()\r\n*\/\r\ntypedef enum\r\n{\r\n BCM2835_GPIO_PUD_OFF = 0x00, \/*!< Off ? disable pull-up\/down 0b00 *\/\r\n BCM2835_GPIO_PUD_DOWN = 0x01, \/*!< Enable Pull Down control 0b01 *\/\r\n BCM2835_GPIO_PUD_UP = 0x02 \/*!< Enable Pull Up control 0b10 *\/\r\n} bcm2835PUDControl;\r\n<\/pre>\nDevice Tree<\/h2>\n
\nEnabling Pullup and Pulldown Resistors on The Raspberry Pi<\/a>
\nHow do I make a device tree overlay for just a single GPIO?<\/a><\/p>\nelinux.org<\/h2>\n
\nRPi Tutorial Easy GPIO Hardware & Software<\/a>
\nRPi BCM2835 GPIOs<\/a>
\nRPi GPIO Code Samples<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"