Problems with I2C reads

2002-08-06 Thread Murray Jensen
On Mon, 5 Aug 2002 10:39:02 -0700, "Keith Outwater" writes: > >Murray - >Thanks for the info! Yes, I think that having an I2C_M_NOSTOP option >would do what I want, but that option is not available in the kernel I'm >using. No, my comment was that for completeness there should be an I2C_M_NOSTO

Problems with I2C reads

2002-08-05 Thread Murray Jensen
On Fri, 2 Aug 2002 13:36:13 -0700, "Keith Outwater" writes: >I am trying to talk to an I2C device (Analog Devices AD9888) using the >MPC860 CPM I2C interface from userland. You should probably state which kernel and i2c driver you are using - there are a lot of different versions around. Your m

Problems with I2C reads

2002-08-05 Thread Keith Outwater
Murray - Thanks for the info! Yes, I think that having an I2C_M_NOSTOP option would do what I want, but that option is not available in the kernel I'm using. > > You should probably state which kernel and i2c driver you are > using - there are > a lot of different versions around. I'm using a

Problems with I2C reads

2002-08-03 Thread bhupinder sahran
hi I think u r missing onr thing. sequence should be like this > Start signal > Slave address (r/w/ bit = write) > Register address > Start signal > Slave address (r/w/ bit = read) > Read register data >NO ack...u have to give > Stop signal Try to give No ack after readin

Problems with I2C reads

2002-08-02 Thread Keith Outwater
Greetings all - I am trying to talk to an I2C device (Analog Devices AD9888) using the MPC860 CPM I2C interface from userland. Writes work fine, but the chip requires a strange write-read sequence for reading back registers. For example, to read a register: Start signal Slave address (r/w/ bit

problems with I2C

2002-06-13 Thread Fend, Matthias
hello everybody, i use a mpc860 with iic,fec and ethernet at SCC3; iic-communication normally works fine, but sometimes especially if there is heavy traffic on SCC3 or fec (eg. download of big files) iic-communication stops with error ... iic-read; short, wanted 32 got 1 ... also the data seems