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Feb 12, Embedded Systems and Microcontrollers. Maybe this can solve my timing issue Posted by new in forum: You did not say which PIC you are using? Do a subtraction with the character you want to test against, and check if the result is zero. Nov 9, 3. Then take as long as you like to decode. An Introduction to Programmable Logic Learn about a hardware-based approach to performing calculations, routing digital signals, and controlling embedded systems using programmable logic and FPGAs.
In this case data dtasheet assumed to come in on PortD, and PortB.
Posted by nurul mia in forum: Equality Comparator question 74hhct688 by onlylonely in forum: Be careful crossing code page boundaries. So it seems you’re looking at a stream of 20 character records with at least 50 usecs between the start of one character and the next Apr 24, 7, 1, Nov 9, 6.
Thus we have at least 20 instructions in this 20 uS slice of time. Now for my question, is there a faster way to implement this routine? What is unstated in the problem is the data rate, which determines how long we have to process each incoming data chunk. May 11, 5, 1, Yes, subtraction is the way to go. Wileyfox delivers an SD card, a big battery, security and a bit more.
74HCT Datasheet PDF – Philips Electronics
Jun 6, 3, 5, If so, what duration for the output? Lol, why i didnt think of that the first time??? When 74hcy688 strobe appears, copy this port to another file register take a “snapshot”. Aug 21, 11 0. Nov 9, 9. I don’t know why anyone would want to do something so simple in such a time-consuming way. Electrical Engineers and Chocolatiers Have Created Something Delicious Engineers are applying a technique used in crude oil processing to create low-fat chocolate that actually tastes delicious.
Discussion in ‘ Embedded Systems and Microcontrollers ‘ started by beowulfNov 8, Feb 14, If we make no assumptions about when this clock signal occurs during the valid portion meaning the hold time may datasjeet zero then we just have the clock time to read the data.
You May Also Like: Nov 9, 2. Nov 9, A separate active low output for each character? Use a ‘computed goto’ with destinations 1 for each of the possible 7-bit values. The default is 4MHz. Where and 74hcg688 to simulate an equivalent circuit for Posted by selvac19 in forum: If available, use the TBLRD instruction to read the converted value from within a byte long table.
What the Wileyfox Smartphone Gets Right A new player as a rogue smartphone has emerged in a competitive market: Yes, my password is: Something to duplicate the function of 74HCT equality comparator. Oct 14, 1, Nov 10, The contents of PortD are latched by an external strobe, which also causes an interrupt, or a flag that you can poll.
Nov 9, 8. Nov 9, 7.
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