Hourglass LED kit. Code to use as an actual timer, for (e.g.) boiling eggs.

[@GrandadsOtherChannel]

Another excellent project. Your blog is very inspiring. Maybe I will have a go myself sometime, but for now I am happy to watch your work 👍

[@paulandrusyszyn9177]

This is great. I finally got my 8x8x8 LED cube reprogrammed and I've tried out all of yours and rick100 programs for the hourglass. I want to try reprogramming RGB star but having trouble compiling the code that was provided. Wondering if you might be able to help. (re-comment from earlier, without a link)

[@ceptimus]

Happy to help. One thing that might be stopping it compiling is that the later versions of SDCC require you to put parentheses () around the interrupt and using parameters - the earlier version would compile with just the naked numbers.

[@paulandrusyszyn9177]

@@ceptimus I think it's something wrong with the code I got from the QR code that came with the kit instructions. I created my batch file as you showed: set PATH="C:\SDCCFILES\50RGBLEDStarMin\bin";%PATH% sdcc -mmcs51 --code-size 4088 --opt-code-size --verbose 50RGBLEDStar.c -o 50RGBLEDStar.ihx packihx 50RGBLEDStar.ihx > 50RGBLEDStar.hex pause but the errors are as follows: sdcc: Generating code... STC15F2K.h:21: warning 278: return type of function omitted, assuming int STC15F2K.h:21: error 1: Syntax error, declaration ignored at 'sfr' STC15F2K.h:21: syntax error: token -> 'P0' ; column 6 50RGBLEDStar.c:9: fatal error: when writing output to : Broken pipe I tried swapping out the STC15F2K.h with some other .h files unsuccessfully.

[@paulandrusyszyn9177]

@@ceptimus I couldn't get the header file that matched with the code I had so I started over with 8051.h and used the old .c file as a template. I worked out all of the sbits that correspond to all of the diode pairs except for the D29 and D30 pair. Which on a stc15w408as looks like it is pin 13 or P5.5 based on the schematics I've seen. Your thoughts on how to find the missing sbit?

[@ceptimus]

@@paulandrusyszyn9177 I don't have that kit, and I've not got the source files. Can you send me a download link, or email the files to me, and I'll see if I can get them to compile. [e-mail]

[@ceptimus]

@@paulandrusyszyn9177 __sfr __at (0xC8) P5; __sfr __at (0xC9) P5M0; __sfr __at (0xCA) P5M1; You can manipulate individual bits in the P5 register with the normal |= and &= to set or reset a bit or ^= to toggle. To set P5.5 it would be P5 |= (1