Embedded wizard! I've been designing and implementing embedded systems (Hardware, Software, Firmware, Chipware,...) for over 30 years.

Re: What do *you* call "Deeply Embedded"

Reply posted 2 years ago (06/21/2019)
To me, "Deeply Embedded" is where a major part of the final devices operation relies upon programmable logic in a CPLD,FPGA, or other "Hard" device! I cut my teeth...
In my experience, I've seen a deeply embedded system, where the actual running target RFS(Root file system) was actually decompressed from an archive (.tar) into...
According to the data sheet on the 74HC595 device, if your operating voltage is greater than 4.5V, it should be able to handle a 25Mhz clock signal which is well...
Your code, which obviously runs on the AT89S51 part, is obviously not running on the AT89LP51. So I can only assume that it is some difference between the AT89S51...
And the hardware difference is....(Drum roll)on the PDIP packagePin 31 >> POL: Reset polarity on the AT89LP52Pin 31 >> |EA/VPP : External Address Enable...

Re: Stack - interrupt, function call?

Reply posted 3 years ago (01/04/2019)
You beat me to the punch by 20 seconds!! LOL Great minds think alike!

Re: Stack - interrupt, function call?

Reply posted 3 years ago (01/04/2019)
It actually depends on the MCU. In my 40 years in embedded firmware development I've worked with a great many MCUs. Some have a "special" Memory area for interrupt...

Re: Low level programming

Reply posted 3 years ago (12/03/2018)
Ok I'd be happy to elaborate.I was designing embedded systems with 8080/8088 Z-80, 6502 and several other processors as early as 1977, while I was in college....

Re: Low level programming

Reply posted 3 years ago (12/03/2018)
aniruddhpr4, My first question is Why? Your processor of choice is a 20 Mhz 8 bit device with a 50nS instruction cycle time. Honestly, the  C language tools and...

Re: Nand flash read isuue

Reply posted 3 years ago (10/16/2018)
I agree completely with ivanovp.  A project I designed some 20 years ago was based on a compact flash device.  The powers that be wanted the device to update...

Re: self-learning embedded curriculum

Reply posted 3 years ago (09/19/2018)
At 62 with 35 years of embedded controller experience, on both the hardware and software side. From designing motherboards on film with colored tape and programming...

Re: Compiler errors on 10.72B

Reply posted 3 years ago (09/13/2018)
Found the root cause of the initial error...You were right, it was not the compiler, one of the original .h files that had global variables in it also had old function...

Re: Compiler errors on 10.72B

Reply posted 3 years ago (09/13/2018)
COMPCORE\MoveObject.cpp is not part of my project.  It appears to be an internal error in the compiler.  In examination of the release notes for the compiler it...

Compiler errors on 10.72B

New thread started 3 years ago
This one is really giving me fits. I'm attempting to port a version of Zmodem.c from 2002 that I used in 2005 on a project with a Freescale iMX6 to a rabbit 4000...

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