git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5480 818b1a75-f10b-46b9-bf7c-635c3b92a50f

targets/ARCH/USRP/USERSPACE/LIB/Makefile.inc

-# compiles the openair_usrp
-
-#OPENAIRTARGETS_DIR ?=../../../..
-
-#OPENAIROBJS += $(OPENAIRTARGETS_DIR)/ARCH/USRP/USERSPACE/LIB/openair0_lib.o
-#CFLAGS += -I$(OPENAIRTARGETS_DIR)/ARCH/USRP/USERSPACE/LIB -I$(OPENAIRTARGETS_DIR)/ARCH/USRP/DEFS
-
-
-#example: example.o $(OPENAIROBJS) 
-#	gcc -o $@ $(CFLAGS) -lm $(OPENAIROBJS) $<
-
-#openair_usrp.o:
-#	$(CXX) -c openair_usrp.cpp -o openair_usrp.o
-
-#clean:
-#	rm -f *.o *~
-#a	rm -f example
-USRP_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/openair_usrp.o
-USRP_FILE_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/openair_usrp.cpp
-USRP_CFLAGS += -I$(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/
-

targets/ARCH/USRP/USERSPACE/LIB/Makefile_tmp.inc

-# compiles the openair_usrp
-
-#OPENAIRTARGETS_DIR ?=../../../..
-
-#OPENAIROBJS += $(OPENAIRTARGETS_DIR)/ARCH/USRP/USERSPACE/LIB/openair0_lib.o
-#CFLAGS += -I$(OPENAIRTARGETS_DIR)/ARCH/USRP/USERSPACE/LIB -I$(OPENAIRTARGETS_DIR)/ARCH/USRP/DEFS
-
-
-#example: example.o $(OPENAIROBJS) 
-#	gcc -o $@ $(CFLAGS) -lm $(OPENAIROBJS) $<
-
-#openair_usrp.o:
-#	$(CXX) -c openair_usrp.cpp -o openair_usrp.o
-
-#clean:
-#	rm -f *.o *~
-#a	rm -f example
-
-USRP_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/openair_usrp.o
-PPS_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/polyphaseResample.o
-USRP_FILE_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/openair_usrp.cpp
-PPS_FILE_OBJ += $(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/polyphaseResample.cpp
-USRP_CFLAGS += -I$(OPENAIR_TARGETS)/ARCH/USRP/USERSPACE/LIB/

targets/ARCH/USRP/USERSPACE/LIB/README.txt

-Now we are using USRP N200/210 and working with OAI v4164.
-
-** Get source code of UHD
-git clone git://github.com/EttusResearch/uhd.git
-
-** Install prerequisites
-sudo apt-get install libboost-all-dev libusb-1.0-0-dev python-cheetah doxygen python-docutils
-
-** Install UHD
-cd <uhd-repo-path>/host
-mkdir build
-cd build
-cmake ../
-make
-make test
-sudo make install
-sudo ldconfig
-
-** Check the speed of USRP
-The results should have almost no overflows and underflows, otherwise the OAI cannot work in realtime. 
-./benchmark_rate --tx_rate 6.25e6 --rx_rate 6.25e6 --duration 30
-
-** Build lte-softmodem-usrp
-cd targets/RTAI/USER
-./make_for_usrp.sh
-
-** Run lte-softmodem-usrp
-./lte-softmodem-usrp

targets/ARCH/USRP/USERSPACE/LIB/def.h

-#include <stdarg.h>
-
-#define SAMPLES_PER_FRM 76800
-#define SAMPLES_PER_SLOT 3840
-#define HW_offset 32
-#define N_slot_offset 4
-#define T_start 3840*20*100
-
-void format_printf(int flag,const char * fmt, ...)
-{
-	if(flag)
-	{
-		va_list args;
-		va_start(args,fmt);
-		vprintf(fmt,args);
-		va_end(args);
-	}
-}

targets/ARCH/USRP/USERSPACE/LIB/def_tmp.h

-#include <stdarg.h>
-
-#define SAMPLES_PER_FRM 76800
-#define SAMPLES_PER_FRM_USRP 62500
-#define SAMPLES_PER_SLOT 3840
-#define SAMPLES_PER_SLOT_USRP 6250
-#define HW_offset 32
-#define N_slot_offset 4
-#define T_start 3840*20*100
-
-void format_printf(int flag,const char * fmt, ...)
-{
-	if(flag)
-	{
-		va_list args;
-		va_start(args,fmt);
-		vprintf(fmt,args);
-		va_end(args);
-	}
-}

targets/ARCH/USRP/USERSPACE/LIB/polyphaseResample.cpp

-#include "polyphaseResample.h"
-#include <iostream>
-#include <stdio.h>
-using namespace std;
-
-// table_len should be decied by the length of the filter output
-// but a default value of 50000 is adequate for our app
-void buildPolyphaseCache(const int P, const int Q, int *&branch_table, int *&offset_table, const int table_len) {
-	branch_table = new int[table_len];
-	offset_table = new int[table_len];
-	for (int i = 0; i < table_len; ++i) {
-		branch_table[i] = (i * Q) % P;
-		offset_table[i] = (i * Q - branch_table[i]) / P;
-	}
-}
-
-void polyphaseResample(short *in_data, unsigned int in_sample_count,
-		short *out_data, unsigned int out_sample_count,
-		short *filter_coeff, unsigned int filter_len,
-		const int P, const int Q, const unsigned int fix_shift,
-		int *branch_table, int *offset_table) {
-	buildPolyphaseCache( P, Q, branch_table, offset_table, 50000);
-	// calculate the sample count of output
-	out_sample_count = (int)(in_sample_count * (float)P / (float)Q);
-
-	short *output_ptr = out_data;
-	unsigned int output_ix = 0;
-	short const *input_end = in_data + in_sample_count * 2;
-	short const *output_end = out_data + out_sample_count * 2;
-	short const *filter_end = filter_coeff + filter_len;
-	while (output_ptr < output_end) 
-	{
-		int output_branch = branch_table[output_ix];
-		int input_offset = offset_table[output_ix];
-
-		short *input_ptr = in_data + 2 * input_offset;
-		short *filter_ptr = filter_coeff + output_branch;
-
-		while (input_ptr >= input_end) {
-			input_ptr -= 2;
-			filter_ptr += P;
-		}
-
-		int sum_real = 0, sum_imag = 0;
-		while ((input_ptr >= in_data) && (filter_ptr < filter_end)) {
-			sum_real += (int)(*input_ptr) * (int)(*filter_ptr);
-			sum_imag += (int)(*(input_ptr + 1)) * (int)(*filter_ptr);
-			input_ptr -= 2;
-			filter_ptr += P;
-		}
-
-		*output_ptr = (short)(sum_real >> fix_shift);
-		*(output_ptr + 1) = (short)(sum_imag >> fix_shift);
-
-		output_ptr += 2;
-		output_ix++;
-	}
-}
-
-
-

targets/ARCH/USRP/USERSPACE/LIB/polyphaseResample.h

-#ifndef _POLYPHASERESAMPLE_H_
-#include <cmath>
-//#include "coeff_3072_to_25.h"
-
-void buildPolyphaseCache(const int P, const int Q, int *&branch_table, int *&offset_table, const int filter_len = 50000);
-
-
-/**
- * @brief polyphase resampler
- * @param in_data input data, layout as [real,imag,real,imag...]
- * @param in_sample_count count of input samples, i.e. a complex 
- *        cosisting of two short int counts as one
- * @param out_data output data, layout same as in_data
- * @param out_sample_count sample count of result, as return
- * @param filter_coeff filter with only real coeffcients
- * @param filter_len count of coeffcients
- * @param P order of upper sampling
- * @param Q order of down sampling
- **/
-
-void polyphaseResample(short *in_data, unsigned int in_sample_count,
-    short *out_data, unsigned int out_sample_count,
-    short *filter_coeff, unsigned int filter_len,
-    const int P, const int Q, const unsigned int fix_shift,
-    int *branch_table, int *offset_table);
-#endif
\ No newline at end of file