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user 16780
Identifies the size and nature of information held by a variable in a program. It is language-dependent. Examples for C/C++ include: `int`, `float`, and `char`.
2
votes
Accepted
double to char* conversion. Weird results from dtostrf
If len is the text array size, you need space there for the terminating '\0'.
So the second paramater to dtostrf has to be smaller than len.
- 1,045
0
votes
Why does Arduino IDE recommend storing 0-255 numbers in "byte" instead of "char"?
Just a little add-on to Majenko's answer:
If a function has a char* parameter, it's usually expecting a zero-terminated text.
If a function has a byte* parameter, it's usually any binary data, event …
- 1,045
2
votes
Can I use 1-byte datatypes to store digital input?
I did not check the internals a while, but in early days there was a
#define HIGH 1
meaning that HIGH is a const int.
Perhaps someone did not want to disable some TRI-STATE digital logic in the …
- 1,045
2
votes
What is the best data type to be used through i2C
I2C works with fixed size byte arrays.
Single bytes for commands should be sufficient. For positions you might need int16_t or even bigger numbers. Unsigned positions relative to (above) zero might m …
- 1,045