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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN2641 датащи(PDF) 29 Page - STMicroelectronics |
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AN2641 датащи(HTML) 29 Page - STMicroelectronics |
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29 / 37 page  AN2641 Linux frame buffer Doc ID 14027 Rev 1 29/37 6.4.2 A brief look at the source files /dev/fb0 also allows several IOCTL commands to interface it, so that a whole range of information about the hardware can be queried and set. The color map handling works via IOCTLs, too. Look into <linux/fb.h> for more information on what IOCTLs exist and on which data structures they work. Here's just a brief overview: Table 3. Source code information on frame buffer Directory or files Purpose drivers/video/ The frame buffer core layer and low-level frame buffer drivers reside in this directory include/linux/fb.h, Generic frame buffer structures are defined in this directory include/video/. Chipset-specific headers are kept in this directory drivers/video/fbmem.c Creates the /dev/fbX character devices and is the front end for handling frame buffer ioctl commands issued by user applications |
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