C002292.01 9100131600 VB-430 | Vibro-meter | Storing image data

Description

C002292.01 9100131600 VB-430 | Vibro-meter | Storing image data

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In Figure 5, we connected several important chips in the OV7670 module schematic to the MCU using three different colored lines. Without further ado, look at the picture~

C002292.01 9100131600 VB-430 Process and Program Explanation for Storing and Reading Image Data (Refer to Atom Brother’s Development Guide and Code)

For this module, we only care about two points: 1. How to store image data; 2. How to read image data

1. Storage (OV7670 writes data to FIFO)

The process of storing image data in the battleship OV7670 module is as follows: wait for OV767 synchronization signal ->FIFO write pointer reset ->FIFO write enable ->wait for the second synchronization signal ->FIFO write disable. By completing the above 5 steps, one frame of image can be stored

2. Read (MCU reads data from FIFO)

C002292.01 9100131600 VB-430 reading process: FIFO read pointer reset ->read clock to FIFO (FIFO RCLK) ->read high byte of first pixel ->read clock to FIFO (FIFO RCLK) ->read low byte of first pixel ->read clock to FIFO (FIFO RCLK) ->read high byte of second pixel ->loop to read remaining pixels ->end

For example, in QVGA mode and RGB565 format, we can cycle through 320 * 240 * 2 times to read a frame of data. By writing this data into the LCD module, we can see the camera image.

Program explanation: (mainly OV7670 for FIFO write control and MCU reading data from FIFO)

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