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Short pins 2 and 3 on your serial port.
Fire up HyperTerminal and set 'Flow control' to 'none'.
Now anything you type should loop right back to the screen.
It's called a loop back. You can also loop flow control signals (check google for pins).
First you need to make room for the new OS using a partition manager, for example gParted form Ubuntu LiveCD. Of course, if you left an empty partition, then skip this.
Backup your MBR to a safe place, good choice is a USB thumb drive:
dd if=/dev/sda of=<path to mounted USB...
Couldn't be further from the truth....
Unlike windows, a linux doesn't slow down over time. The only slowdown I've ever experienced was during very heavy HDD usage which will slow down the system response because linux is primarily build for a server and in turn gives higher priority too HDD...
Very good point.
You guys are right, I'll go for the TCXO and eliminate all the hassle.
Now only to explain to the older people that new technology doesn't need calibrating all the time like they used to do LOL
Thank you very much, everybody....
I'll marking as solved... as soon as i...
Yes I know. That's because I don't have any specific requirements. This is still a developing idea for a new product. In the end I can just put +/-
accuracy, but I'm going for the best I can get.
It will not see large temperature oscillations and I was looking at AT-cut characteristics and it...
Thanks for the input.
That also did cross my mind. I'll see how it goes in testing.
I've done some tests with that plastic orange resonator to see if the principle itself would work and was surprised to get some nice results. But the resonator itself has high jitter (can't remember the figures...
Yeah, that's my primary concern about this setup...
I'm thinking since it will not be continuous timing, but rather start-stop in that small time range, the error should not accumulate enough to cause concern. But tests will show how that works out.
The jitter will be the bigger issue than the...
Thank you, this is very nice reed.
I do intend to use the external crystal. I know osctune is for internal oscillator, what I meant by tunable is that I must have a means to calibrate the quartz frequency from time to time, with a variable capacitor.
My work demands that all the equipment is...
Hi guys,
I need to do some precise timing in 10us to 10ms range. And for this, I'm trying to achieve as precise crystal frequency as possible. The oscillator also needs to be tunable for periodic calibration.
This is the setup. The oscilloscope is showing nice waveform, but I'm unable to...
Yes the program stays.
The bootloader is used on devices that support self-programming to reprogram the code, without the need for dedicated MCU programmer.
When you start the MCU, it takes incoming data and flashes itself, if no data is received in set amount of time (few seconds) than the...
If this confuses you now, I suggest you get some tutorial on PIC to get you started before going into anything deeper.
To answer you question:
You decide what port to use according to your design requirements. As a general digital input/output it makes no difference, tho there are some...
unsigned short result;
Short is 1 byte long. You need at least int size (2B).
result=result<<8; //shift to left for 8 bit
After this, result = 0
Also the scope of the result is inside the block. You should use "return result;", or a global variable.
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