Create a pointer to two-dimensional array

Question

I need a pointer to a static 2-dimensional array. How is this done?

static uint8_t l_matrix[10][20];

void test(){
   uint8_t **matrix_ptr = l_matrix; //wron         


        

Answer 1

You could also add an offset if you want to use negative indexes:

uint8_t l_matrix[10][20];
uint8_t (*matrix_ptr)[20] = l_matrix+5;
matrix_ptr[-4][1]=7;

If your compiler gives an error or warning you could use:

uint8_t (*matrix_ptr)[20] = (uint8_t (*)[20]) l_matrix;