Raspberry Pi command line tools vcgencmd All In One
Raspberry Pi command line tools vcgencmd All In One
vcgencmd
$ vcgencmd -h
$ vcgencmd --help
Usage: vcgencmd [-t] command
Send a command to the VideoCore and print the result.
-t Time how long the command takes to complete
-h, --help Show this information
Use the command 'vcgencmd commands' to get a list of available commands
Exit status:
0 command completed successfully
-1 problem with VCHI
-2 VideoCore returned an error
For further documentation please see
https://www.raspberrypi.org/documentation/computers/os.html#vcgencmd
$ vcgencmd version
Jan 5 2023 10:48:31
Copyright (c) 2012 Broadcom
version 8ba17717fbcedd4c3b6d4bce7e50c7af4155cba9 (clean) (release) (start)
$ vcgencmd commands
commands="commands, set_logging, bootloader_config, bootloader_version, cache_flush, codec_enabled, get_mem, get_rsts, measure_clock, measure_temp, measure_volts, get_hvs_asserts, get_config, get_throttled, pmicrd, pmicwr, read_ring_osc, version, set_vll_dir, set_backlight, get_lcd_info, arbiter, otp_dump, test_result, get_camera, enable_clock, scaling_kernel, scaling_sharpness, hdmi_ntsc_freqs, hdmi_adjust_clock, hdmi_status_show, hvs_update_fields, pwm_speedup, force_audio, hdmi_stream_channels, hdmi_channel_map, display_power, memtest, dispmanx_list, schmoo, render_bar, disk_notify, inuse_notify, sus_suspend, sus_status, sus_is_enabled, sus_stop_test_thread, egl_platform_switch, mem_validate, mem_oom, mem_reloc_stats, hdmi_cvt, hdmi_timings, readmr, file, vcos, ap_output_control, ap_output_post_processing, vchi_test_init, vchi_test_exit, pm_set_policy, pm_get_status, pm_show_stats, pm_start_logging, pm_stop_logging, vctest_memmap, vctest_start, vctest_stop, vctest_set, vctest_get"
https://www.raspberrypi.org/documentation/computers/os.html#vcgencmd
demos
$ vcgencmd measure_temp
# temp=45.6'C
$ vcgencmd measure_clock arm
# frequency(48)=600062000
$ vcgencmd get_throttled
# throttled=0x50005 ❌ 欠压
vcgencmd alias
$ sudo vim .bashrc
$ cat .bashrc
# 🚀
alias vcmv='vcgencmd measure_volts'
alias vcmt='vcgencmd measure_temp'
alias vcarm='vcgencmd measure_clock arm'
# update ✅
# source ~/.bashrc
pi@rpi3b:~ $ source ~/.bashrc
pi@rpi3b:~ $ vcmt
temp=46.7'C
pi@rpi3b:~ $ vcarm
frequency(48)=600000000
pi@rpi3b:~ $ vcmv
volt=1.3125V
pi@rpi3b:~ $
refs
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