data type sizes

Hi all,

I'm a bit miffed about the data type changes between Uno and Due.

I'm playing with low level ADC and DAC control via PDC in a Due. it seems the PDC transfers data in 16-bit chunks.

however, Int is 4 bytes in Due, as opposed to 2 in Uno. sizeof(short) is reported to be two bytes but using shorts creates strange issues when declaring the array.

what do I do to create an array of 1024 16-bit-unsigned values in a DUE ?

Regards, Ronald

uint16_t arrayname[1000];

You might also need the following line for uint16_t
#include <stdint.h>

uint16_t arrayname[1000];

Thanks for your help !

I guess the uint32_t and it's kin are the new style of how to code. worked for me (without needing to use an include file)

Still, there is something fishy in that PDC / DMA. The DMA can transfer 1, 2 or 4 byte chunks, according to the datasheet, but it is not clear when it is using what format. If someone knows where i should look for that nugget of knowledge in the datasheet, please let me know.