Here is a quick sketch I put together for the Arduino UNO to get the unix time from the usb serial port and sync the Arduino time to the computer (in my case macos).
This sketch works but needs more refinement (trap errors, disconnects, add options, etc) but since I will not be doing much with this for the next few weeks, I post the first working draft below and will also post the python script I use on macos soon:
I am assigned a programming work.It is my first time to use unix.
The task is writing a shell script to interrogate the university Unix operating system to determine the number of "Runnable" processes at any given time.Then append the result,along with a time-stamp,on a log file. Also there are... (1 Reply)
I have a list of interfaces and time the interface was last active. I can't figure out how to convert the time in the second column,
Fa1/14 0
Se0/0/0 0
Fa1/11 0
Fa1/9 0
Fa1/0 0
Se0/0/1 1240401408
Gi1/0 0
Fa0/0 1240401408
Fa1/3 0
Fa1/8 0
Fa1/15 0
Fa1/13 0
Fa1/10 0
Fa1/1 0
Fa1/12... (7 Replies)
Here is two time I have:
Jul 12 16:02:01
Jul 13 01:02:01
and how can I do a simple match to get difference between two time which is 09:00:00
Thanks in advance. (3 Replies)
I'd like to convert a date string in the form of sun aug 19 09:03:10 EDT 2012, to unixtime timestamp using awk.
I tried
This is how each line of the file looks like, different date and time in this format
Sun Aug 19 08:33:45 EDT 2012, user1(108.6.217.236) all: test on the 17th
... (2 Replies)
I needed some help in adding a duration (in seconds) to a start time (in hhmmss format) and a start date (in mmddyy format) in order to get an end date and end time. The concept of a leap year is also to be considered while incrementing the day. The code/ function that I have formed so far is as... (3 Replies)
Hi guys thanks for the help for my previous posts.Now i have a requirement that i download a XMl file which has UTC time stamp.I need to convert UTC time into Unix server timezone.
For ex if the time zone of unix server is CDT then i need to convert into CDT.whatever may be the system time... (5 Replies)
In my further exploration of Arduino, today I decided to install the arduino-cli on my mac today.
https://github.com/arduino/arduino-cli
I followed the instructions for macOS but when I got to this part:
arduino-cli board list
I got the dreaded "Unknown" Fully Qualified Board Name... (1 Reply)
Discussion started by: Neo
1 Replies
LEARN ABOUT NETBSD
iicbus
IICBUS(4) BSD Kernel Interfaces Manual IICBUS(4)NAME
iicbus -- I2C bus system
SYNOPSIS
device iicbus
device iicbb
device iic
device ic
device iicsmb
DESCRIPTION
The iicbus system provides a uniform, modular and architecture-independent system for the implementation of drivers to control various I2C
devices and to utilize different I2C controllers.
I2C
I2C is an acronym for Inter Integrated Circuit bus. The I2C bus was developed in the early 1980's by Philips semiconductors. Its purpose
was to provide an easy way to connect a CPU to peripheral chips in a TV-set.
The BUS physically consists of 2 active wires and a ground connection. The active wires, SDA and SCL, are both bidirectional. Where SDA is
the Serial DAta line and SCL is the Serial CLock line.
Every component hooked up to the bus has its own unique address whether it is a CPU, LCD driver, memory, or complex function chip. Each of
these chips can act as a receiver and/or transmitter depending on its functionality. Obviously an LCD driver is only a receiver, while a
memory or I/O chip can both be transmitter and receiver. Furthermore there may be one or more BUS MASTERs.
The BUS MASTER is the chip issuing the commands on the BUS. In the I2C protocol specification it is stated that the IC that initiates a data
transfer on the bus is considered the BUS MASTER. At that time all the others are regarded to as the BUS SLAVEs. As mentioned before, the
IC bus is a Multi-MASTER BUS. This means that more than one IC capable of initiating data transfer can be connected to it.
DEVICES
Some I2C device drivers are available:
Devices Description
iic general i/o operation
ic network IP interface
iicsmb I2C to SMB software bridge
INTERFACES
The I2C protocol may be implemented by hardware or software. Software interfaces rely on very simple hardware, usually two lines twiddled by
2 registers. Hardware interfaces are more intelligent and receive 8-bit characters they write to the bus according to the I2C protocol.
I2C interfaces may act on the bus as slave devices, allowing spontaneous bidirectional communications, thanks to the multi-master capabili-
ties of the I2C protocol.
Some I2C interfaces are available:
Interface Description
pcf Philips PCF8584 master/slave interface
iicbb generic bit-banging master-only driver
lpbb parallel port specific bit-banging interface
bktr Brooktree848 video chipset, hardware and software master-only interface
SEE ALSO iicbb(4), lpbb(4), pcf(4)HISTORY
The iicbus manual page first appeared in FreeBSD 3.0.
AUTHORS
This manual page was written by Nicolas Souchu.
BSD August 6, 1998 BSD