Other Parts Discussed in Thread: C2000WARE
Hi,
I have tested with the sample program below.
C:\ti\c2000\C2000Ware_4_01_00_00\driverlib\f2838x\examples\c28x\sdfm\sdfm_ex6_FIFO_freeze_claread.c
When I use this program to get the full scale data I get the following values.
The maximum value will be 16384.
TRM says –32,768 to 32,767.
Why can't I get 32767 with this sample program?
Where should I modify my program to get 32767?
This example works with the following settings:
//
// Data filter Module
//
// Configure Data filter modules filter type, OSR value and
// enable / disable data filter
//
SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_1 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x000A)));
SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_2 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x000A)));
SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_3 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x000A)));
SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_4 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x000A)));
Best regards,
Sasaki
