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Use the Roadrunner ISC Image Sensor Controller port

This page describes how to configure and use of the ISC port on Roadrunner SOM.

The basic knowledge used to write this article comes from this page:

Linux4Sam: UsingISC (Image Sensor Controller)

Hardware used

Omnivision OV7670 camera available on Amazon

AZDelivery Arduino Camera

Wirings

Signal	SAMA5D2 pin	Camera pin
ISC_D0	PB26	GND
ISC_D1	PB27	GND
ISC_D2	PB28	GND
ISC_D3	PB29	GND
ISC_D4	PB30	D0
ISC_D5	PB31	D1
ISC_D6	PC0	D2
ISC_D7	PC1	D3
ISC_D8	PC2	D4
ISC_D9	PC3	D5
ISC_D10	PB24	D6
ISC_D11	PB25	D7

ISC_VSYNC	PC5	VSYNC OUT Active High Frame Valid; indicates active frame
ISC_HSYNC	PC6	HREF OUT Active High: Line/Data Valid; indicates active pixels
ISC_MCK	PC7	XCLK INP Master Clock into Sensor
ISC_PCK	PC4	PCLK OUT Pixel Clock output from sensor

TWCK1	PD5	SCL I2C Clock
TWD1	PD4	SDA I2C Data

PB11	PB11	RST INP Sensor reset signal, active low
PB12	PB12	PWON INP Power down input, active high

3V		VCC
GND		GND

Linux driver

Device Drivers  --->
    <*> Multimedia support  ---> 
        [*]   Cameras/video grabbers support
        [*]   Media Controller API   
        [*]   V4L2 sub-device userspace API         
        [*]   V4L platform devices  --->   
            <*>   ATMEL Image Sensor Controller (ISC) support
            <*>   ATMEL Image Sensor Interface (ISI) support 
        I2C Encoders, decoders, sensors and other helper chips  ---> 
            <*> OmniVision OV5640 sensor support  
            <*> OmniVision OV7670 sensor support

Device tree and defconfig

Use the camera from user space

Install ffmpeg:

sudo apt update
sudo apt install -y ffmpeg

Record 5 secs of video:

sudo ffmpeg -y  -r 25 -t 5 -i /dev/video0 out.mp4

Links

Sergio Tanzilli
System designer, webmaster and Acme Systems co-founder
Personal email: tanzilli@acmesystems.it
Webpages: https://www.acmesystems.it - https://www.tanzolab.it
Github repositories: https://github.com/tanzilli and https://github.com/acmesystems
Telegram group dedicated to the Acme Systems boards: https://t.me/acmesystemssrl

Roadrunner technical documentation Buy on-line