I have set up i2c bit banging (bashing) on my Orange Pi one - not without difficulty, There are three issues I would like to explore: - existing drivers, gpioiic - nanosleep - input/output on same gpio pin
Gpioiic driver Is this driver working? I tried to set it up in rc.securelevel: echo "Set up i2c" /usr/sbin/gpioctl /dev/gpio0 attach gpioiic 11 0x03 With the following results: Set up i2c gpioiic0 at gpio0: SDA[11], SCL[12] iic0 at gpioiic0 However there is no /dev/gpioiic even after I try to make it: # cd /dev # ./MAKEDEV gpioiic0 # ./MAKEDEV gpioiic # ls -al /dev/g* crw------- 1 root wheel 13, 0 Sep 2 11:11 /dev/gpio0 crw------- 1 root wheel 13, 1 Aug 30 22:53 /dev/gpio1 crw------- 1 root wheel 13, 2 Aug 30 22:53 /dev/gpio2 crw------- 1 root wheel 13, 3 Aug 30 22:53 /dev/gpio3 crw------- 1 root wheel 13, 4 Aug 30 22:53 /dev/gpio4 crw------- 1 root wheel 13, 5 Aug 30 22:53 /dev/gpio5 crw------- 1 root wheel 13, 6 Aug 30 22:53 /dev/gpio6 crw------- 1 root wheel 13, 7 Aug 30 22:53 /dev/gpio7 crw------- 1 root wheel 13, 8 Aug 30 22:53 /dev/gpio8
