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strcmp()
Bounced of another odd one, about which I should have known better: strcmp() where one of the two inputs is null gives, on this 64-bit Linux/GCC C system, a segfault.   It...
Thursday, 5 November 2020 - 10:29
Apropos casting...
Just as an example, and only because it slowed me down for a moment or two...   while ((uint16_t)regs.pc != next_instruction_address) { interpret_and_disassemble(); }...
Saturday, 31 October 2020 - 19:53
[Linux] what's going on here then?
Linux does not have an equivalent to the conio.h getch() and kbhit() which respectively return a single character from the keyboard and return true if a key is waiting; to get...
Friday, 18 September 2020 - 22:09
OLED display and driver package - 128 * 64
I'm out of touch with current display technology - can anyone recommend a 128 * 64 display module, about a couple of inches across? And ideally not costing twenty quid...  ...
Friday, 11 September 2020 - 20:10
Compilation with warning
Here's an odd one. I'm trying to decide whether this is a bug or not, before I take it to the IDE/compiler maker, so no names, no pack drill.   This bloody thing took me all...
Tuesday, 7 April 2020 - 19:02
I have no {} and I must scream...
I am currently trying to persuade a twenty-year-old assembler source to compile without warnings under GCC for 64-bit linux, and while I thank the original writer (it's available...
Saturday, 5 October 2019 - 08:32
Arduino Uno - interrupt on serial rx
Am I going bananas and/or missing something obvious? The limited amount of googling I have done leads me to believe that the only interrupts which can wake the processor from deep...
Saturday, 13 July 2019 - 11:31
Touch sensor weirdness...
I'm pulling my hair out over this one. I'm using a nucleo for testing, rather than an AVR, hence it's here in general electronics though it is generisable to any controller (but...
Saturday, 13 July 2019 - 09:20
Large CMOS or CCD image sensors
I'm considering replacing the eyepiece in a 6-inch newtonian reflector with an image sensor of some flavour... I've hacked up a web cam but the sensor at 1/4" is too small; the...
Sunday, 17 November 2013 - 08:09
Just what I need for the day job...
High temperature flash SPI chips... up to 8Gb at 175C, 1Gb at 200C: http://www.sesemi.co.uk/index.ph... Or there's a new TI chip http://www.ti.com/product/sm28vl... which is only...
Saturday, 19 October 2013 - 06:15
Riddle me this... where's the current going?
A straight-forward oscillator as above, 4MHz. The two gates are the only ones used on the package; all other inputs are tied high or low as most convenient for the wiring, about...
Wednesday, 27 February 2013 - 15:23
M644A vs M324P serial problem
Got an interesting one here... I'm trying to use UART0 on a 644A to talk to a u-blox6 GPS chip, and failing. The same code, same pins, same voltage, same clock speed, same...
Monday, 19 November 2012 - 21:40

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