c array

[luca72]

hello i'm using ctypes

i have this c function
PREF0 short usb_tc08_get_single (
short handle,
float * temp,
short * overflow_flags,
short units);
where :
nt main(void)
{
short handle = 0; /* The handle to a TC-08 returned by
usb_tc08_open_unit() */
char selection = 0; /* User selection from teh main menu */
float temp[9]; /* Buffer to store temperature readings from
the TC-08 */
int channel, reading; /* Loop counters */
int retVal = 0; /* Return value from driver calls indication
success / error */
USBTC08_INFO unitInfo;/* Struct to hold unit information */

how i can pass the value using c types?
strumento = ctypes.cdll.LoadLibrary('libusbtc08.so') and here is ok
but when i call the function
strumento.short usb_tc08_get_single(arg1, arg2,arg3,arg4)
arg1 is 0 arg2 2 is a carray i dont know how to convert, arg3 is none
and arg 4 is a string here is the c example
usb_tc08_get_single(handle, temp, NULL, USBTC08_UNITS_CENTIGRADE)