you can convert using the String object: If I am not wrong, the uint8_t corresponds to 8 bits. First create a buffer of the desired size then as one char is equivalent to one byte, try the following:
be sure to include an extra character / space at the end of the string for a null terminator, so for example if you want to have 30 characters for the actual string, assign 31 characters to the array
//! Convert from a string to a pointer to uint8_t's
/*!
\param char inp: the string we want to convert
\param uint8_t outp: the transformed pointer to unit8_t's
\return int : returns 0 on success, -1 on failure.
*/
int WaspRFID::string2vector(char *inp, uint8_t *outp)
{
for (int i=0; i<16; i++)
{
outp[i] = '\0'; // write 0's first
}
if (sizeof(inp) > 16)
{
return -1; // this is an error
}
else
{
for (int i=0; i<16; i++)
{
outp[i] = inp[i]; // write the content of inp
if (inp[i] == '\0')
break;
}
return 0;
}
}
but it is already part of the library along with all the other functions the ticketing example uses, it would be simpler to use the library
//! Convert from a string to a pointer to uint8_t's
/*!
\param char inp: the string we want to convert
\param uint8_t outp: the transformed pointer to unit8_t's
\return int : returns 0 on success, -1 on failure.
*/
int WaspRFID::string2vector(char *inp, uint8_t *outp)
{
for (int i=0; i<16; i++)
{
outp[i] = '\0'; // write 0's first
}
if (sizeof(inp) > 16)
{
return -1; // this is an error
}
else
{
for (int i=0; i<16; i++)
{
outp[i] = inp[i]; // write the content of inp
if (inp[i] == '\0')
break;
}
return 0;
}
}
but it is already part of the library along with all the other functions the ticketing example uses, it would be simpler to use the library
