see also doc/developers/applications Jean Delvare wrote: >>i made a batery charger , a separate board with LTC1759 , I soldered >>some wires on SDRAM card to have acces to I2c from my PC and i >>connected that 2 wires SCL and SDA to LTC1759 chip >> >>i need to read an write to this chip from my computer. >>i have i801 smbus controller inside of my PC >> >>can you tell me the steps that i should follw from now on to write a >>program to "talk " with this chip or wit some chip like this? >> >>i think i have to use this chip i801 as a master i2c controler to send >>to ltc1759 some data. > > > Correct. > > >>i need to write some functions read an write to an smb adress >> >>read(slave_chip_addr,registry_addr) >>write(slave_chip_addr,command,data) >> >>data is 2 bytes >>and read() should return 2 bytes >> >>can you tell me how can i do that? > > > You have to options: > > 1* Write a kernel driver for the LTC1759 chip, either for Linux 2.4 or > 2.6, at your option. Use existing chip drivers as examples. This is the > most common way to support new chips, but not necessarily what you want > to do in your particular case. > > 2* Write a user-space program that access the i2c-dev driver. The > i2c-dev driver is a generic way to control i2c busses from user-space. > You can see the doc/dev-interface file in our i2c package for details. > You can use prog/dump tools from our lm_sensors package as examples. > > Hope that helps. >
