| Any w1 device must be connected to w1 bus master device - for example | |
| ds9490 usb device or w1-over-GPIO or RS232 converter. | |
| Driver for w1 bus master must provide several functions(you can find | |
| them in struct w1_bus_master definition in w1.h) which then will be | |
| called by w1 core to send various commands over w1 bus(by default it is | |
| reset and search commands). When some device is found on the bus, w1 core | |
| checks if driver for it's family is loaded. | |
| If driver is loaded w1 core creates new w1_slave object and registers it | |
| in the system(creates some generic sysfs files(struct w1_family_ops in | |
| w1_family.h), notifies any registered listener and so on...). | |
| It is device driver's business to provide any communication method | |
| upstream. | |
| For example w1_therm driver(ds18?20 thermal sensor family driver) | |
| provides temperature reading function which is bound to ->rbin() method | |
| of the above w1_family_ops structure. | |
| w1_smem - driver for simple 64bit memory cell provides ID reading | |
| method. | |
| You can call above methods by reading appropriate sysfs files. |