conversion of uint8_t to a string [C]
c,arrays,string,pointers,uint8t
1.) it's a little bit faster to eliminate the int array. 2.) adding '0' changes the integer values 0 and 1 to their ascii values '0' and '1'. 3.) it's undefined behaviour to return the address of a local variable. You have to malloc memory in the heap. 4.) yes,...
C - Arduino - cannot convert 'uint8_t*' to 'uint16_t*'
void* will solve your cast problem and sizeof a pointer is never going to be > 33 so try this instead: void LCD(char RGBXXX, void *str, int is_data) { RGB(RGBXXX); if (is_data != 0) { char data[33]; memcpy(data,(uint8_t*)str,33); writeLCD(data); } else { BMP((uint16_t *)str); } }...
Cannot invoke with an argument list of type '(UInt64)'
Your problem is the different int types you're using. First let's check the writePosition method. You use an Int8 as parameter. So you need to make sure that you also call the method with a Int8 as parameter. To make sure you are using an Int8 you can cast it:...
Passing uint8_t to another viewController EXC_BAD_ACCESS
Figured it out: otherController.yBuffer = malloc(inWidth * inHeight * sizeof(uint8_t) ); //size you want to allocate memcpy(otherController.yBuffer, yBuffer, inWidth * inHeight * sizeof(uint8_t)); //copy to target buffer from current buffer, with the size you allocated After you are done with the buffer and don't need it: free(self.cameraViewController.yBuffer); ...
converting char* to array of uint8_t (c)
#include <stdint.h> #include <inttypes.h> ... char *buffer="dddd:0000:0000:0000:0000:0000:0000:cccc"; uint8_t ipadress[16]; sscanf(buffer, "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ":" "%2" SCNx8 "%2" SCNx8 ,...
Raspberry PI uint8_t alligment
For the sizeof operator to give the actual size of the array, you need to: Allocate the array statically Refer to the array within its scope of declaration For example: void func() { int arr[10]; int total_size = sizeof(arr); int num_of_elements = sizeof(arr)/sizeof(*arr); ... } An example of when the...
uint8_t array with dynamic variable
Simply copy an array and change the first value. uint8_t array[5][12] = { { 0x00, 0x01,0x00,0x00,0x00,0x06,0xFE,0x03,0x01,0xC1,0x00,0x01 } } ; for (int i = 1; i < 5; i++ ) { array[i][0] = i; for (int j = 1; j < 12; j++ ) { array[i][j] = array[0][j]; } } Typed...
Binary Stream To Uint8Array - JavaScript
javascript,angularjs,uint8t,binarystream
So you have a binary stream (the values I am assuming were sent from a byte array of some sort, 0-255). You do not need to do the (the window.btoa(...) because it already is in a state ready for the Uint8Array) before turning it into an Uint8Array. You simple need...
Pass uint8_t array to method
This line: uint8_t *theArray = { arrayOne,arrayTwo,arrayThree,arrayFour }; is actually creating an array filled in with the pointers to your arrays converted to uint8_t values. I don't think this is what you want. So first of all (notice the double pointer): uint8_t *theArray[] = { arrayOne,arrayTwo,arrayThree,arrayFour }; Then your ObjC...
Array of uint8_t arrays
The toplevel array should just be an array of pointers: uint8_t *theArrays[] = { arrayOne,arrayTwo,arrayThree,arrayFour }; You will lose information about the lengths of each "row", but that's fine. I don't think you can reference an array in the initializer like in your example and have the elements copied into...