vcgencmd tool is used to output information from the VideoCore GPU on Raspberry Pi. You can find the source code for the vcgencmd utility at Github.To get a list of all supported vcgencmd commands, use vcgencmd commands. Below are some useful commands and their required parameters. vcos The vcos command has two useful subcommands: version … Read more
View the wireless clients connected to the OpenWrt router: 1 2 iwinfo wlan0 assoclist iw dev wlan0 station dump View the assigned DHCP client IP: 1 cat /tmp/dhcp.leases Scan for wireless routers/AP: 1 iwinfo wlan0 scan View OpenWrt router wireless information: 1 2 3 4 5 6 7 8 9 10 11 12 13 iwinfo … Read more
View connected wireless clients to the OpenWrt router: 12 iwinfo wlan0 assoclistiw dev wlan0 station dump View allocated DHCP client IPs: 1 cat /tmp/dhcp.leases Scan wireless routers/APs: 1 iwinfo wlan0 scan View wireless information of the OpenWrt router: 12345678910111213 iwinfo wlan0 infowlan0 ESSID: "OpenWrt" Access Point: 00:1F:A3:65:55:8E Mode: Master Channel: 5 (2.432 GHz) Tx-Power: 20 … Read more
1、reboot means to restart. 2、source makes the modified files take effect immediately, avoiding the problem of having to restart for the changes to take effect. For example, if we modify /etc/profile, the changes will not take effect immediately. In this case, we can enter source /etc/profile to apply the changes. There will be more updates … Read more
3.3.1 Bluetooth Command Settings Knowledge The embedded Bluetooth serial communication module allows us to break free from the constraints of cables and achieve wireless serial communication within a limited range, with two working modes: command response mode and automatic connection mode. In automatic connection mode, the module can be divided into three roles: Master, Slave, … Read more