diff --git a/Raspberry_Pi.md b/Raspberry_Pi.md index f3d73d0..c3ae8ab 100644 --- a/Raspberry_Pi.md +++ b/Raspberry_Pi.md @@ -87,20 +87,22 @@ which contains options for non-NTSC outputs. ## Camera The commands for the camera module are included as part of the raspberrypi-firmware package: + ``` $ /opt/vc/bin/raspistill $ /opt/vc/bin/raspivid ``` -Append to `/boot/config.txt`: +According to the [boot options documentation](https://www.raspberrypi.org/documentation/configuration/config-txt/boot.md) `start_x=1` loads the relevant Videocore firmware for camera operation. Additionally more GPU memory is required for compressing the camera data according to [Raspberry Pi forum](https://www.raspberrypi.org/forums/viewtopic.php?t=234778#p1436166). Append to `/boot/config.txt`: + ``` gpu_mem=128 -start_file=start_x.elf -fixup_file=fixup_x.dat +start_x=1 ``` -Optionally - disable_camera_led=1 +Optionally append the line `disable_camera_led=1` if you have RPi camera v1. + +After boot you should see `/dev/video0`, which will be used by camera applications and additional `/dev/video1*` devices, [which are memory to memory (M2M) devices for the video decoder, encoder, and ISP](https://www.raspberrypi.org/forums/viewtopic.php?f=43&t=62364&p=1527503#p1527508). The following is a common error: @@ -112,6 +114,7 @@ mmal: Failed to run camera app. Please check for firmware updates ``` which can be corrected by setting these values in `/boot/config.txt`: + ``` cma_lwm= cma_hwm= @@ -119,6 +122,7 @@ cma_offline_start= ``` Another common error: + ``` mmal: mmal_vc_component_create: failed to create component 'vc.ril.camera' (1:ENOMEM) mmal: mmal_component_create_core: could not create component 'vc.ril.camera' (1) @@ -131,12 +135,6 @@ can be corrected by adding the following line to `/etc/modprobe.d/blacklist.conf blacklist i2c_bcm2708 -In order to use standard applications (those that look for `/dev/video0`) the -V4L2 driver must be loaded. This can be done automatically at boot by creating -an autoload file, `/etc/modules-load.d/rpi-camera.conf`: - - bcm2835-v4l2 - The V4L2 driver by default only allows video recording up to 1280x720, else it glues together consecutive still screens resulting in videos of 4 fps or lower. Adding the following options removes this limitation, `/etc/modprobe.d/rpi-camera.conf`: