Q regarding to the code

Using Arduino Programming Questions
1

Hi all,

I found code regarding to alarm

what does this line mean in Arduino code

uint8_t sett[] = {77, 97, 100, 101, 32, 66, 121, 78, 97, 110, 100, 105, 107, 97, 32, 64, 53, 115, 113, 117, 105, 100};

what is unit8 ?
what are those number mean?

Thank you

2 
uint8_t sett[] = {77, 97, 100, 101, 32, 66, 121, 78, 97, 110, 100, 105, 107, 97, 32, 64, 53, 115, 113, 117, 105, 100};

uint8_t is a type definition of an Unsigned 8-bit Integer

This line of code creates an ARRAY of unsigned 8-bit integers named sett[]. The array has 22 elements defines by those comma separated numbers.

You can access these numbers like this:

uint8 dat;

dat = sett[0];   // this wold make dat = 77
dat = sett[2];   // this wold make dat = 100
3

uint8_t is the same thing as what you've been probably calling byte in the Arduino code. byte isn't a standard type, it's defined in Arduino core to be either uint8_t or unsigned char I can't remember. Either way, uint8_t is equivalent to byte as long as you're on an Arduino.

4

Hi,

Thanks for your explanation but why they choose this number in this array?

I means 77, 97, 100, 101, 32, 66, 121, 78, 97, 110, 100, 105, 107, 97, 32, 64, 53, 115, 113, 117, 105, 100

??

Thanks

5

why they choose this number in this array?

What is the array used for ? Please post the whole program. Where did you get it from ?

6

for setting alarm clock

7

Looks like just plain text;

77  M
97  a
100 d
101 e
32  <space>
66  B
121 y

You can check the rest at e.g asciitable.com

8

Thank you very much (f)

9

Please next time somebody asks for code, post it as the meaning might very well be related to the context how it is used; I've showed you what the numbers mean but nobody can tell you what is does if you don't provide the context; it could be part of a scrambling algorithm :wink:

The same if somebody asks where the code comes from, post a link.