A camera driving method based on Renesas rx23t microcontroller

Abstract

The invention discloses a method for driving a camera based on a Renesas RX23T single-chip microcomputer. The single-chip microcomputer is respectively connected to the camera and a liquid crystal display module, and the camera is connected to a FIFO chip; the HREF and VSYNC pins of the camera are connected to the GPIO of the single-chip microcomputer. The GPIO pin connected to the VSYNC pin and the MCU is configured as an interrupt mode, and the MCU uses the field interrupt signal to know whether the new image acquisition is completed, so as to control whether the FIFO is enabled; the data pin DO of the camera is connected to the same IO port of the MCU Continuous high 8-bit pins, directly read the high 8-bit status to get a byte of FIFO content. The invention effectively utilizes the performance of the 32-bit RX23T single-chip microcomputer, and the collected images have a high frame rate, stable data, and strong reliability, and can be widely used in ground tracking and target tracking of objects such as smart cars and quadrotor aircraft.

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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