Hi Jean,
Do you mean the list in:
-----Original Message-----
From: Jean Delvare
Sent: Wednesday, July 30, 2014 9:48 PM
To: Zvi Vered
Cc: lm-sensors@xxxxxxxxxxxxxx
Subject: Re: Problem in sending I2C message from SMBus Intel's
controller to a slave device
Hi Zvi,
On Wed, 30 Jul 2014 20:59:15 +0300, Zvi Vered wrote:
From an Intel’s ATOM I want to send an I2C message from SMBus controller
to
a TI’s microcontroller configured as an I2C slave.
I used the following code:
handle = fopen (“/dev/i2c-14”,O_RDWR); //open SMBUs controller
ioctl (handle, I2C_SLAVE, 0x43); //set I2C slave destination address
i2c_smbus_write_block_data (handle, 0x00, 16, buffer); //send 16 bytes
message, command = 0x00
The message I want to send is: 0xAD, 0x2D, 0xFE, 0xCA, ..... 0x00 (16
bytes)
I’m using I2C sniffer to see what I sent and what I see is:
0x00, 0x10, 0xAD, 0x2D, 0xFE, 0xCA, .....
It seems the register (command) and length are also sent.
The MCU expect pure data without the 2 bytes: 0x00, 0x10
The above code runs under vanilla linux 3.2.48
Can you help ?
This is unrelated to hardware monitoring and thus off-topic on the
lm-sensors list. Please ask on the linux-i2c list, Cc me.
--
Jean Delvare
SUSE L3 Support
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