canon digital camera driver

In the first half of this year, I transplanted a Linux driver to a common vimicro camera on the market to an Embedded Development Board. The development environment is: OS: linux2.6.9 Compile: Cross 3.3.2 CPU: Intel PXA270 Camera type: vimicro zc301p + hv7131r The driver source code used is based on the free software s

This series is divided into 3-4 articles, because too many articles will be messy. V4l2 video drivers mainly involve the following knowledge points: Camera knowledge (You can view the chip manual provided by the camera manufacturer.) You need to know the features of the selected camera, including the access control method, configuration methods of various parame

measure whether each pin of the camera is correctly connected to the chip before the development driver. Otherwise, the image will not be visible even if the code is correct. Mt9d111 is an image sensor chip with a CMOS interface. It can sense external visual signals, convert them into digital signals, and output them. We need to provide the

function for fetching a data streamStrminireceivestreamcontrolpacket: For callback functions that control data flowstrminievent: enables data flow to support an eventStrminiclock: callback function for the digital stream clock control.Let's take a look at the driver's workflow:1. Device plugged in, detected by Plug and Play Device Manager;2. The PDO is created and the corresponding IRP is generated;3. The I/O subsystem loads the minidriver and enters

Transferred from: http://blog.163.com/ac952_hmz/blog/static/947915132012101287284/ Drivers, three-point hardware, three-point format, four-point software.In mobile phones, we often refer to the camera directly as sensor, the Spreadtrum platform sensor is like LCD, is already very mature. Follow the previous pattern, first introduce the basic knowledge of hardware.I. Types of sensorIn fact, this for the driver