uint8_t (C language - Type). uint8_t stores an 8-bit unsigned number, from 0 to 255. It is equal to unsigned char.
Questions tagged [uint8t]
272 questions
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1 answer
How to convert a QString containing a hex value to an uint?
QString samp_buff[100];
QByteArray data;
uint8_t speed;
samp_buff[3] = data.toHex(); //I converted the QByteArray into a string
qDebug() << "read_every_data_"<< samp_buff[3];
speed = samp_buff[3].toUInt(); //Trying to convert the string to…
Thanush Ganesh
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crash when clearing uint8_t on pic18f67k22
I'm adding a clock to my program, but for some reason I cannot lower the value of my "sec" variable.
I have a millisecond timer that raises a flag every ms. So, every 1000 ms I clear the ms variable; this happens without a problem.
Now every 10 (for…
Wesley Kienhuis
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2 answers
Convert Int64 array to Int8 in Julia gives InexactError: trunc(Int8, -9223372036854775808)
I try to convert a part of an julia df from Int64 to Int8.
input:
array = convert(Array{Int8} , array );
output:
InexactError: trunc(Int8, -9223372036854775808)
Stacktrace:
[1] throw_inexacterror(f::Symbol, #unused#::Type{Int8}, val::Int64)
…
Benedikt Schwab
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C++ Convert to hex and store the result in uint8_t
std::stringstream sstream;
uint8_t data[1] = { };
int x =1;
sstream << "0x" << std::hex << x; //sstream = 0x04b35cc8 "0x1" why the sstream not be only "0x1"
uint8_t result= (uint8_t)sstream.str().c_str();// result= 80
…
user216905
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3 answers
initialize uint8_t array from txt file
I have, in a .txt file, a uint8_t array already formatted, like this:
0x4d, 0x5a, 0x90, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00,
0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40,
What I need is to initialize…
DreamY
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enum size and initialization of variable
Even setting the size of an enum is not enough to be able to assign it to a variable of the same size (http://coliru.stacked-crooked.com/a/edd287393f172abd):
#include
#include
enum class Command : uint8_t
{
CMD1 = 0x48,
…
vegalock
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3 answers
How to convert a hex string to a uint8_t array? (C language)
how can I convert a hex string to a uint8_t array?
My string is 02012B1530A6E3958A98530031902003876940000000000CDF9844173BE512AFFFFFFE11DBBA1F00079387800E13012E11FC017FFFFFFFFE39C10F40
and I want to convert it into this array:
uint8_t array_uint[] =…
user14677223
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vote
3 answers
How do I cast a float pointer to a uint8_t pointer in Metal Shader Language?
I am trying to write the following C code in Metal Shading Language inside of a kernel void function:
float f = 2.1;
uint8_t byteArray[sizeof(f)];
for (int a = 0; a < sizeof(f); a++) {
byteArray[a] = ((uint8_t*)&f)[a];
}
The code is supposed to…
Todd
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3 answers
Do I need to use `uint8_t` to do arithmetics on a `uint8_t` pointer?
I have an array of unsigned 8 bit integer, however the length of this array can be higher than 255. I want to use pointer arithmetics instead of array indexing.
Can someone explain me if the following code is acceptable or not? My doubt is that the…
JJAlberto
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1 answer
what does numpy if the value in an array exceeds int8
Consider the following piece of code:
test = np.ones((200,200))
test = test*20000
test_int8 = test.astype(np.int8)
When I implement this, I get that test_int8 is filled with 32, why? and in general, if there's an array whose values exceed the…
Schach21
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3 answers
Turning a bitfield into a uint8_t
My bitfield below represents the 7 status flags for the 6502 CPU. I am trying to emulate the instruction php, which pushes a copy of the status flags onto the stack.
struct Flags {
uint8_t C: 1;
uint8_t Z: 1;
uint8_t I: 1;
uint8_t D:…
Caspian Ahlberg
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2 answers
Confusion between uint8_t and unsigned char
I am trying to call void process (uint8_t* I1,uint8_t* I2,float* D1,float* D2,const int32_t* dims); from a header file, using the following
int n=10;
size_t size=n*n*sizeof(uint8_t);
uint8_t* I1 = (uint8_t*)malloc(size);
uint8_t* I2…
Zeyad Khattab
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1 answer
React Native base64 Image to Uint8ClampedArray
I had functionality to pick an image of QRcode from CameraRoll of Android and iOS in react-native and once the user had picked an image. I will use something like jsQR to decode that and validate if its a real qr code or not.
But on jsQR lib they…
joyce
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2 answers
how to convert an ostringstream hex string character pairs to a single unit8_t equivalent binary value
I am trying to do the following:
I have an assembled ostringstream object that contains a hex payload to be transmitted. Say, it might be
03125412349876543210af (this is representing the data using hex convention in my string)
This string is…
Spangas
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1
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3 answers
Is there any way to replace/substitute an array data points in uint8 data
I have this data
old= array([[171, 171, 171, ..., 170, 170, 170],
[171, 171, 171, ..., 170, 170, 170],
[171, 171, 171, ..., 170, 170, 170],
...,
[ 17, 17, 17, ..., 17, 17, 17],
[ 17, 17, 17, ..., 17, 17, …
Zewo
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