4 Bit mask. C Code. Easy to use example. Useful to test configuration in microchips.-4 Bit Bitmask. C Code. Easy to use example. Useful to test configuration in microchips.

8 Bit mask. C Code. Easy to use example. Useful to test configuration in microchips.-8 Bit Bitmask. C Code. Easy to use example. Useful to test configuration in microchips.

* This supports access to SPI devices using normal userspace I/O calls. * Note that while traditional UNIX/POSIX I/O semantics are half duplex, * and often mask message boundaries, full SPI support requires full duplex * transfers. There ar