From 6ab94e0b318884bbcb95e2ea3835f951502e1d99 Mon Sep 17 00:00:00 2001
From: jaseg <git@jaseg.net>
Date: Wed, 14 Oct 2020 12:47:28 +0200
Subject: Move firmware into subdirectory

---
 .../RefLibs/src/HelperFunctions/ref_helper.c       | 103 +++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c

(limited to 'fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c')

diff --git a/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c b/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c
new file mode 100644
index 0000000..57ecf1b
--- /dev/null
+++ b/fw/hid-dials/Drivers/CMSIS/DSP/DSP_Lib_TestSuite/RefLibs/src/HelperFunctions/ref_helper.c
@@ -0,0 +1,103 @@
+#include "ref.h"
+
+float32_t scratchArray[8192*2]; 
+
+arm_cfft_instance_f32 ref_cfft_sR_f32_len8192 = { 8192, 0, 0, 0 };
+	
+q31_t ref_sat_n(q31_t num, uint32_t bits)
+{
+	int32_t posMax, negMin;
+	uint32_t i;
+
+	posMax = 1;
+	for (i = 0; i < (bits - 1); i++)
+	{
+		posMax = posMax * 2;
+	}
+
+	if (num > 0)
+	{
+		posMax = (posMax - 1);
+
+		if (num > posMax)
+		{
+			num = posMax;
+		}
+	}
+	else
+	{
+		negMin = -posMax;
+
+		if (num < negMin)
+		{
+			num = negMin;
+		}
+	}
+	return (num);
+}
+
+q31_t ref_sat_q31(q63_t num)
+{
+	if (num > (q63_t)INT_MAX)
+	{
+		return INT_MAX;
+	}
+	else if (num < (q63_t)0xffffffff80000000ll)
+	{
+		return INT_MIN;
+	}
+	else
+	{
+		return (q31_t)num;
+	}
+}
+
+q15_t ref_sat_q15(q31_t num)
+{
+	if (num > (q31_t)SHRT_MAX)
+	{
+		return SHRT_MAX;
+	}
+	else if (num < (q31_t)0xffff8000)
+	{
+		return SHRT_MIN;
+	}
+	else
+	{
+		return (q15_t)num;
+	}
+}
+
+q7_t ref_sat_q7(q15_t num)
+{
+	if (num > (q15_t)SCHAR_MAX)
+	{
+		return SCHAR_MAX;
+	}
+	else if (num < (q15_t)0xff80)
+	{
+		return SCHAR_MIN;
+	}
+	else
+	{
+		return (q7_t)num;
+	}
+}
+
+float32_t ref_pow(float32_t a, uint32_t b)
+{
+	uint32_t i;
+	float32_t r = a;
+	
+	for(i=1;i<b;i++) 
+	{
+		r *= a;
+	}
+	
+	if ( b == 0)
+	{
+		return 1;
+	}
+	
+	return r;
+}
-- 
cgit