meta-raspberrypi

问题 I have adafruit pressure and temperature sensor BMP180 connected to I2C of Raspberry Pi 3. The device is detected on 0x77 address of I2C, i2cdump runs with no error and shows correct values (e.g. byte 0x55 in 0xD0 as described in Bosch documentation). But reading a byte in most cases results in input/output error. pi@raspberrypi:~ $ i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -

问题 I've successfully built a raspberry pi Yocto image using the instructions here: http://www.jumpnowtek.com/rpi/Raspberry-Pi-Systems-with-Yocto.html. When the system boots, I see the default psplash splash screen of a Raspberry Pi with a loading bar. The meta-raspberrypi layer has a psplash bbappend recipe file that defines the raspberry pi image seen when the system boots. me@me:~/poky-morty/meta-raspberrypi$ grep -R SPLASH * conf/machine/include/rpi-base.inc:SPLASH = "psplash-raspberrypi"