Sometimes it’s helpful to see if a particular parameter is set or not on the raspberry pi. This is where vcgencmd. However, vcgencmd is useful for many other things.
In the examples below, please be aware that your values will most likely differ.
Find configured values
Here is a list of the values which have been set by the “user”:
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$ vcgencmd get_config int arm_freq=900 sdram_freq=450 over_voltage_avs=0x1b774 disable_l2cache=1 program_serial_random=1 config_hdmi_boost=2 emmc_pll_core=1 hdmi_force_cec_address=65535 ignore_lcd=1 framebuffer_ignore_alpha=1 framebuffer_swap=1 max_usb_current=1 arm_control=0xa5800010 temp_limit=85 force_pwm_open=1 pause_burst_frames=1 avoid_fix_ts=1 |
Find the CPU Temperature
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$ vcgencmd measure_temp temp=39.0'C |
Memory Usage
You can find out the memory available for the CPU (arm) and the GPU:
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$ vcgencmd get_mem arm arm=944M $ vcgencmd get_mem gpu gpu=64M |
All the Commands Available
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$ vcgencmd commands commands="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, version, commands, set_vll_dir, led_control, set_backlight, set_logging, get_lcd_info, set_bus_arbiter_mode, cache_flush, otp_dump, test_result, codec_enabled, get_camera, get_mem, measure_clock, measure_volts, scaling_kernel, measure_temp, get_config, hdmi_ntsc_freqs, hdmi_adjust_clock, hdmi_status_show, hvs_update_fields, pwm_speedup, force_audio, hdmi_stream_channels, hdmi_channel_map, display_power, read_ring_osc, memtest, get_rsts, 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, file, vctest_memmap, vctest_start, vctest_stop, vctest_set, vctest_get" |
