/**
* \internal Calculate asynchronous baudrate value (UART)
*/
enum status_code _sercom_get_async_baud_val(
const uint32_t baudrate,
const uint32_t peripheral_clock,
uint16_t *const baudval,
enum sercom_asynchronous_operation_mode mode,
enum sercom_asynchronous_sample_num sample_num)
{
/* Temporary variables */
uint64_t ratio = 0;
uint64_t scale = 0;
uint64_t baud_calculated = 0;
uint8_t baud_fp;
uint32_t baud_int = 0;
uint64_t temp1, temp2;
/* Check if the baudrate is outside of valid range */
if ((baudrate * sample_num) > peripheral_clock) {
/* Return with error code */
return STATUS_ERR_BAUDRATE_UNAVAILABLE;
}
if(mode == SERCOM_ASYNC_OPERATION_MODE_ARITHMETIC) {
/* Calculate the BAUD value */
temp1 = ((sample_num * (uint64_t)baudrate) << SHIFT);
ratio = long_division(temp1, peripheral_clock);
scale = ((uint64_t)1 << SHIFT) - ratio;
baud_calculated = (65536 * scale) >> SHIFT;
} else if(mode == SERCOM_ASYNC_OPERATION_MODE_FRACTIONAL) {
int main ()
{
int a , b,n ;
char ch,r[100] ;
printf("Enter 1 or 2: ");
scanf ("%c",&ch);
switch(ch)
{
case '1' :
printf("Enter a: "); scanf("%d",&a);
printf("Enter b: "); scanf("%d",&b);
long_division(a%b,b,r);
printf("Value of %d/%d: %d.%s\n",a,b,a/b,r);
break;
printf("Enter n: "); scanf("%d",&n);
longest_cycle(n);
case '2' : break;
}
}
int
main(void)
{
int quot, rem;
long_division(40, 3, ", &rem);
printf("40 divided by 3 yields quotient %d ", quot);
printf("and remainder %d\n", rem);
return (0);
}
