Questions tagged [uint16]
127 questions
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1 answer
Python: convert array of uint16_t to string (from Arduino over RS-485)
I'm trying to send json over modbus rtu (I know, it is very bad use of modbus.)
My schema is similar to:
I have connected Arduino USB to PC as COM5 and RS485 converter connected to USB-RS485 to PC as COM4.
If I read data from Arduino using QModBus…
martin
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1
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1 answer
Convert float values to uint8 array in javascript
I have a Float32Array with values from an audio file.I want to save it as a .wav file so I need to convert that values to a Uint8array.
To convert from uint8 to float I convert first to an int16 array and then to a Float32Array (Convert int16 array…
user7597554
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2 answers
Convert int16 array to float
I have an array of bytes from an audio file and I want to convert it into data that I can process to filter the audio signal.
I have an array like this:
[239,246,96,247.....]; Each element is a uint8 byte
Each 2 bytes(16 bits) represent a sample,so…
user7597554
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- 11
1
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2 answers
Combining 2 uint16_t into into 1 uint32_t
I have 2 uint16_t's that i want to combine into 1 32 bit number:
uint16_t var1 = 255; // 0000 0000 1111 1111
uint16_t var2 = 255; // 0000 0000 1111 1111
uint32_t var3 = (var1 << 16) + var2;
I expect var3 to be 0000 0000 1111 1111 0000 0000 1111…
user4292309
1
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1 answer
Value of uint8_t after being converted from uint_16t
I have to do a small assignment for school. I am writing this in C. The question is:
Given
uint16_t A[] = { 0xabce, 0x43fe, 0xcf54, 0xffff };
uint8_t *p = (uint8_t *)&A[0];
What is the value of p[3]?
I did some research and found that the numbers…
LvanRooij
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- 7
1
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2 answers
How to create 3D array of optionals w/ set size
How would I go about creating a 3-dimensional array of UInt16? with a set size where each element is by default set to nil?
My attempt was
var courseInfo = UInt16?(count:10, repeatedValue: UInt16?(count:10, repeatedValue: UInt16?(count:10,…
Lahav
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1
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2 answers
uint16_t subtraction GCC compilation error
I have the following program
#include
#include
#include
int main(void) {
uint16_t o = 100;
uint32_t i1 = 30;
uint32_t i2 = 20;
o = (uint16_t) (o - (i1 - i2)); /*Case A*/
o -= (uint16_t) (i1 -…
Mohamed
- 265
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1
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1 answer
How to bit-shift and concatenate to get correct result?
I'm currently struggling with modbus tcp and ran into a problem with interpreting the response of a module. The response contains two values that are encoded in the bits of an array of three UInt16 values, where the first 8 bits of r[0] have to be…
Rob
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C: fread does not read the full block
Here's my code so far:
#include
#include
#define N_DET 432
#define N_PROJ 500
int readSinogram(uint16_t mess[],char filename[], int sample){
//init
FILE *fp;
int i;
//open file
fp=fopen(filename,"r");
…
Dominic
- 452
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1
vote
1 answer
a gettime() function that returns a uint16_t value in C
Hi I'm trying to do a getTime() function that returns uint16_t in C.
I do can successfully get an array of chars now
Here's my code for a output of array of chars.
Say today is Dec 9 2014 the output will be 091214
So how can i make the output a…
Shanji
- 15
- 4
1
vote
1 answer
Convert string with space separators to uint16
Hi I need help to convert a string to array of uint16
my string look like:
Dim test as String = "4 7 9 10 11 12 14 15 16 17 19 23 24 25 26 27 28 29 30 32 33 37 40 42 48 58 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79"
And I need to convert that…
Celso Dias Catarino Neto
- 128
- 13
1
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1 answer
Convert String to UInt16 Objective-C
I am facing the problem, that I can't convert an string or an int to an UInt16. This is my current code: (UInt16)[[defaults stringForKey:@"port"] intValue] [[defaults stringForKey:@"port"] intValue] is 8080 and (UInt16)[[defaults…
David Gölzhäuser
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1
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1 answer
Converting uint16 from ADC flips negative
What I want to do:
Turn the resulting 16bit number (after combining the two 8bit #s) into a string to use with my serial send function
The problem:
When using itoa, the result becomes negative once it passes the half way point (passing from the 15th…
Nick Yang
- 13
- 2
1
vote
1 answer
How can I pass in a pointer to a pointer of a UInt16 array to a Marshalled function?
I'm attempting to send a pointer to a pointer of a UInt16 array to a marshalled function like so in C#:
C++:
int foo(Unsigned_16_Type** Buffer_Pointer);
C#:
[DllImport("example.dll")]
public static extern int foo(IntPtr Buffer_Pointer);
UInt16[]…
user2134127
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1
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1 answer
Converting 16-bit integer to 8-bit integer?
I'm implementing C code to copy a 16-bit sign and magnitude integer to an 8-bit sign and magnitude integer. Is that even possible? Could someone please explain how to do this?
code snippet:
int16_t a = 0x1234;
int8_t b, c;
How to copy first two…
Rohith Gowda
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