1config BR2_PACKAGE_BCM2835 2 bool "bcm2835" 3 depends on BR2_arm 4 help 5 C library for Broadcom BCM 2835 as used in Raspberry Pi. 6 It provides access to GPIO and other IO functions on the 7 Broadcom BCM 2835 chip, allowing access to the GPIO pins 8 on the 26 pin IDE plug on the RPi board so you can control 9 and interface with various external devices. 10 11 WARNING: the opinion of the Buildroot developers is that 12 such library is a complete abomination as it entirely works 13 around the standard Linux interfaces to access GPIOs, I2C, 14 SPI busses or other IOs. The library directly remaps the 15 hardware registers in user-space, completely bypassing what 16 the kernel drivers are doing, and potentially conflicting 17 with them. 18 19 http://www.airspayce.com/mikem/bcm2835 20