基本信息

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   源码介绍

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This program is used for communicating with monitor using DDC/CI interface.
This program is GPLed and written by Oleg I. Vdovikin (oleg@cs.msu.su)

Use i2cdetect to scan your DDC I2C buses first. Supported displays should
respond at addresses 0x37 (DDC/CI) and 0x50 (EDID). Some displays are respond
on VGA or DVI busses only, so check both.

This program is based on info sniffed on wire and published in 

USB Monitor Control Class 1.0 specification for control codes
available at http://www.usb.org/developers/hidpage/usbmon10.pdf

int ddcci_caps(int fd, unsigned int addr, 
unsigned int offset, unsigned char *buf, unsigned char len)
{
unsigned char _buf[3];

_buf[0] = DDCCI_COMMAND_CAPS;
_buf[1] = offset >> 8;
_buf[2] = offset & 255;

if (ddcci_write(fd, addr, _buf, sizeof(_buf)) < 0) 
{
return -1;
}

usleep(DELAY);

return ddcci_read(fd, addr, buf, len);
}

【源码目录】

ddcci-master

├── Makefile
├── README
├── ddcci-tool.c
└── i2c-dev.h
0 directories, 4 files