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Author Archives: Mandar

how mutex is different from binary semaphore ?

Hello, I just googled and found like their are some ownership issue which differentiate Mutex and Binary semaphore. Still I am confused !! (Also where should I use Mutex and where Binary semaphore ??)

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Stepper Motor Interfacing with Parallel Port

We have Successfully Interfaced stepper motor with parallel port and tested following modes of operation: 1. Half step sequence Clockwise and Anti-clockwise. 2.Full step sequence Clockwise and Anti-clockwise. 3.Eight step sequence Clockwise and Anti-clockwise and successfully controlled the speed of motor … Continue reading

Posted in Parallel Port Driver | Tagged | 5 Comments

Status: Serial port and MDC

I have completed bidirectional DTE to DTE communication using serial port cross cable MDC: multiple data compression and decompression is also done for case 4

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Serial_Port_Status

I have completed Serial Port Loop back mode

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STATUS: Development_Tools

I have successfully completed all three assignments associated with development tools.

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update: Termios

I have successfully completed all the assignments associated with General Terminal Interface

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Linux environment assignment status:

I successfully completed following topics, 1.Successfully extracted current environment variable using getenv. 2.Changed current env var using putenv. 3.Extracted all env var using Environ. 4.successfully used syslog,openlog,closelog,setlogmask. 5.working on redirection of portion of output to file.  

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Parallel port driver status

I am currently working on Nibble mode of parallel port and we successfully transferred bytes of information from one PC to another using delay method but, facing problems in handshaking(unable to change control bits  )….i want some information about handshaking … Continue reading

Posted in Parallel Port Driver | 1 Comment

status on character driver

i have completed registration, initialization, open, release, and working on trim.

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how to rotate bits of unsigned integer to left/right by specific number of bits???

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