Initial commit: TC264 smart car project with IPS200 menu system

- IPS200 display menu with real-time status and parameter settings
- Camera image processing and line tracking
- IMU attitude solution and PID control
- WiFi SPI oscilloscope data transmission

libraries/infineon_libraries/Service/CpuGeneric/SysSe/Math/Ifx_FftF32.h

@@ -0,0 +1,115 @@
+/**
+ * \file Ifx_FftF32.h
+ * \brief Floating-point Fast Fourier Transform
+ * \ingroup library_srvsw_sysse_math_f32_fft
+ *
+ *
+ *
+ * \version disabled
+ * \copyright Copyright (c) 2013 Infineon Technologies AG. All rights reserved.
+ *
+ *
+ *                                 IMPORTANT NOTICE
+ *
+ *
+ * Use of this file is subject to the terms of use agreed between (i) you or 
+ * the company in which ordinary course of business you are acting and (ii) 
+ * Infineon Technologies AG or its licensees. If and as long as no such 
+ * terms of use are agreed, use of this file is subject to following:
+
+
+ * Boost Software License - Version 1.0 - August 17th, 2003
+
+ * Permission is hereby granted, free of charge, to any person or 
+ * organization obtaining a copy of the software and accompanying 
+ * documentation covered by this license (the "Software") to use, reproduce,
+ * display, distribute, execute, and transmit the Software, and to prepare
+ * derivative works of the Software, and to permit third-parties to whom the 
+ * Software is furnished to do so, all subject to the following:
+
+ * The copyright notices in the Software and this entire statement, including
+ * the above license grant, this restriction and the following disclaimer, must
+ * be included in all copies of the Software, in whole or in part, and all
+ * derivative works of the Software, unless such copies or derivative works are
+ * solely in the form of machine-executable object code generated by a source
+ * language processor.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+ * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 
+ * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+
+ *
+ * \defgroup library_srvsw_sysse_math_f32_fft Floating-point FFT
+ * This module implements the Fast Fourier Transform in single precision floating-point
+ * \ingroup library_srvsw_sysse_math_f32
+ *
+ */
+
+#ifndef IFX_FFTF32_H
+#define IFX_FFTF32_H
+
+#include "Ifx_Cf32.h"
+
+/** \brief Maximum FFT resolution (bits).
+ * If redefined, then \ref Ifx_g_FftF32_bitReverseTable and \ref Ifx_g_FftF32_twiddleTable shall be regenerated. */
+#define IFX_FFTF32_MAX_RESOLUTION (14)
+
+/** \brief Maximum FFT length.
+ * If redefined, then \ref Ifx_g_FftF32_bitReverseTable and \ref Ifx_g_FftF32_twiddleTable shall be regenerated. */
+#define IFX_FFTF32_MAX_LENGTH     (1U << IFX_FFTF32_MAX_RESOLUTION)
+
+/** \brief Bit reversal table */
+IFX_EXTERN IFX_CONST uint16   Ifx_g_FftF32_bitReverseTable[IFX_FFTF32_MAX_LENGTH];
+
+/** \brief Twiddle factor table */
+IFX_EXTERN IFX_CONST cfloat32 Ifx_g_FftF32_twiddleTable[IFX_FFTF32_MAX_LENGTH / 2];
+
+//----------------------------------------------------------------------------------------
+/** \addtogroup library_srvsw_sysse_math_f32_fft
+ * \{ */
+
+/** \name Transform functions
+ * \{ */
+
+/** \brief Twiddle factor generator */
+IFX_EXTERN cfloat32 *Ifx_FftF32_generateTwiddleFactor(cfloat32 *TF, sint16 nX);
+
+/** \brief Radix-2 Fast-Fourier Transform */
+IFX_EXTERN cfloat32 *Ifx_FftF32_radix2(cfloat32 *R, const cfloat32 *X, uint16 nX);
+
+/** \brief Radix-2 Inverse Fast-Fourier Transform */
+IFX_EXTERN cfloat32 *Ifx_FftF32_radix2I(cfloat32 *R, const cfloat32 *X, uint16 nX);
+
+/** \} */
+//----------------------------------------------------------------------------------------
+/** \name Utility functions
+ * \{ */
+
+/** \brief Lookup from \ref Ifx_g_FftF32_bitReverseTable the bit-reversed \<n\> with \<bits\> as number of bits */
+IFX_INLINE uint16 Ifx_FftF32_lookUpReversedBits(uint16 n, unsigned bits)
+{
+    unsigned shift = IFX_FFTF32_MAX_RESOLUTION - bits;
+    uint16   index = Ifx_g_FftF32_bitReverseTable[n];
+    return index >> shift;
+}
+
+
+/** \brief Lookup from \ref Ifx_g_FftF32_twiddleTable the twiddle factor for N, k */
+IFX_INLINE cfloat32 Ifx_FftF32_lookUpTwiddleFactor(sint32 N, sint32 k)
+{
+    return Ifx_g_FftF32_twiddleTable[k * IFX_FFTF32_MAX_LENGTH / N];
+}
+
+
+/** \brief Calculate the bit-reversed \<n\> with \<bits\> as number of bits */
+IFX_EXTERN uint16 Ifx_FftF32_reverseBits(uint16 n, unsigned bits);
+
+/** \} */
+//----------------------------------------------------------------------------------------
+/** \} */
+
+#endif /* IFX_FFTF32_H */