Camera driving method based on Renesas RX23T single-chip microcomputer

Abstract

The invention discloses a camera driving method based on a Renesas RX23T single-chip microcomputer. The single-chip microcomputer is connected with a camera and a liquid crystal display module, and the camera is connected with an FIFO chip; HREF and VSYNC pins of the camera and a GPIO pin connected to the single-chip microcomputer are all set in an input mode, a VSYNC pin and a GPIO pin connectedto the single-chip microcomputer are set in an interruption mode, the single-chip microcomputer obtains whether a new image is collected via a field interruption signal and controls whether writing ofthe FIFO is enabled; and data pins DO of the camera are connected to continuous high-8-bit pins of the same IO port of the single-chip microcomputer, and the high-8-bit state of read directly to obtain FIFO content of one byte. According to the method of the invention, performance of the 32-bit RX23T single-chip microcomputer is utilized effectively, the collected image frame rate is high, data is stable, the reliability is high, and the method can be widely applied to occasions of ground tracking and target tracking of objects as intelligent trolleys and four-rotor aircrafts.

Description

technical field [0001] The invention relates to the technical field of camera driving, in particular to a method for driving a camera based on a Renesas RX23T single-chip microcomputer. Background technique [0002] Cameras are used in a wide range of applications. It provides great convenience in unmanned vehicles, drones, etc., such as fixed-point hovering of drone flight control, and image recognition of unmanned vehicles. Because the acquisition speed of the camera is fast and the resolution is high, it is difficult for a traditional 8-bit or 16-bit single-chip microcomputer chip to drive the camera. It is also very difficult to drive the general low-end 32-bit ARM core single-chip microcomputer. Most of the 32-bit single-chip microcomputers have DMA function modules, which can save the acquisition time to the greatest extent. The RX23T MCU does not have a DMA function module, and its performance is relatively low. The highest frequency is only 40MHZ. Therefore, the d...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention proposes a camera driving method based on the Renesas RX23T single-chip microcomputer, which solves the problem that the RX23T single-chip microcomputer does not have DCMI peripherals, the main frequency is low, and the SRAM memory is small. To solve the problem of storing the output data of the camera image sensor, the present invention provides a camera driving method with higher frame rate, stable image data and strong reliability

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