Hi all
I have used IQmath & Vlib with DM6437.
These days, I trying to make tracking application using kalman filter in Vlib.
In that, there is a SQ10.5(16bit) type matrix "State" (the member of struct VLIB_kalmanFilter) whereas my IQmath is a 32bit.
Here are couple of problems.
1. Why multiplies " MAX_S16 / MAX_10p5 " to floating elements of matrix to makes SQ10.5 value, not just multiplies "MAX_10p5" ?
-
#define MAX_U16 65535
#define MAX_S16 32768
#define MAX_U32 4294967295
#define MAX_S32 2147483647
#define MAX_8p8 256
#define MAX_0p16 1
#define MAX_12p4 4096
#define MAX_4p12 16
#define MAX_16p16 65536
#define MAX_13p2 8192
#define MAX_10p5 1024
KFtest->state[0] = 0 * MAX_S16 / MAX_10p5;
I got above code in the Vlib examples (VLIB_testKalmanFilter_2x4.c) .
Please let me know any manual or document for "SQX.X" . (IQmath Library Maual ? )
2. Relate with above 1, to change form SQ10.5 to IQ15(32bit) , Is it correct way that "_IQ15( KFtest->state[0] * MAX_10p5 / MAX_S16); " ?
Unfortunatley, there is no example that "how to change SQ10.5 value to IQ15 value".
3. IQMath have a efficiency and optimized functions such as "_IQ15toF()".
Is there any good Macro or library that do SQ10.5 to IQ15(32bit) change?
