[chbot] Programming 8-bit microcontrollers

[Richard Jones]

Hi Volker,

I will accept your challenge.
My correct solution offered below makes two assumptions:
a) The programming language is c++
b) The program below does what I want it to do, I wonder if that was what
you intended? :-)

Richard Jones

#include <stdint.h>
#include <stdio.h>
static const uint16_t setting = 15*60;
class values {
  uint8_t a, b, c;
  uint32_t d;
  uint8_t e;
  uint16_t f;
  values();
};
values::values() {
  a=50;
  b= 1;
  c=10;
  d=0xFFB070;
  e= 5;
  f=0x03FF;
};
void func() {
  uint32_t ms;
  ms = setting * 1000;
  // ...
}



On Fri, Sep 23, 2016 at 3:34 PM, Volker Kuhlmann <list0570 at paradise.net.nz>
wrote:

> This is for AVR, but should hold for any 8-bit job. Spot the problems:
>
> static const uint16_t setting = 15*60;
> class values {
>   uint8_t a, b, c;
>   uint32_t d;
>   uint8_t e;
>   uint16_t f;
> };
> static const values defaults {
>   50, 1, 10, 0xFFB070, 5, 0x03FF
> };
> void func() {
>   unsigned long ms;
>   ms = setting * 1000;
>   ...
> }
>
> The program doesn't work in 2 places.
>
> First solution wins a free copy of the night light firmware.
>
> First correct solution wins 2 free copies of the night light firmware.
>
> Prize giving on Monday...
>
> Volker
>
> --
> Volker Kuhlmann
> http://volker.top.geek.nz/      Please do not CC list postings to me.
>
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