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-rw-r--r--recipes-demo/de10-nano-fftsw-apps/files/stream_fpga_256x32x128.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/recipes-demo/de10-nano-fftsw-apps/files/stream_fpga_256x32x128.c b/recipes-demo/de10-nano-fftsw-apps/files/stream_fpga_256x32x128.c
new file mode 100644
index 0000000..4377903
--- /dev/null
+++ b/recipes-demo/de10-nano-fftsw-apps/files/stream_fpga_256x32x128.c
@@ -0,0 +1,118 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <error.h>
+#include <errno.h>
+
+#include "NE10.h"
+
+/* customize these macros and variables for a particular implementation */
+#define FFT_IN_ROUNDS (128)
+#define FFT_CALC_POINTS (256)
+#define FFT_CALC_ROUNDS (32)
+#define FFT_POINTS (FFT_CALC_POINTS * FFT_CALC_ROUNDS)
+#define IN_SAMPLE_TYPE ne10_fft_cpx_int16_t
+#define OUT_SAMPLE_TYPE ne10_fft_cpx_int32_t
+
+const char *g_test = "stream_fpga_256x32x128";
+const char *g_description = "256x32x128 point FFT, FPGA, 16-bit input 24/32-bit output";
+
+/* these functions and variables are implemented in overhead.c as a library */
+extern void initialize_everything(int argc, char **argv);
+extern uint64_t get_gt_value(void);
+extern void release_everything(void);
+extern void print_results(void);
+
+extern char *g_input_filename;
+extern char *g_output_filename;
+extern uint64_t g_start_time;
+extern uint64_t g_end_time;
+
+int main(int argc, char **argv)
+{
+ int input_fd;
+ int output_fd;
+ int fft256stream_dev_fd;
+ int result;
+ IN_SAMPLE_TYPE *in_buf;
+ OUT_SAMPLE_TYPE *out_buf;
+ int j;
+
+ initialize_everything(argc, argv);
+
+ /* allocate storage for input, output and config buffers */
+ in_buf = (IN_SAMPLE_TYPE*) NE10_MALLOC (FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE));
+ if(in_buf == NULL)
+ error(1, errno, "in_buf allocation");
+
+ out_buf = (OUT_SAMPLE_TYPE*) NE10_MALLOC (FFT_POINTS * sizeof(OUT_SAMPLE_TYPE));
+ if(out_buf == NULL)
+ error(1, errno, "out_buf allocation");
+
+ /* open the input and output files and fft dev */
+ input_fd = open(g_input_filename, O_RDONLY);
+ if(input_fd < 0)
+ error(1, errno, "opening input file '%s'", g_input_filename);
+
+ output_fd = open(g_output_filename, O_WRONLY | O_CREAT, ~((mode_t)umask));
+ if(output_fd < 0)
+ error(1, errno, "opening output file '%s'", g_output_filename);
+
+ fft256stream_dev_fd = open("/dev/fft256stream", O_RDWR);
+ if(fft256stream_dev_fd < 0)
+ error(1, errno, "opening fft256stream_dev_fd");
+
+ /* read the input data */
+ result = read(input_fd, in_buf, FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE));
+ if(result < 0)
+ error(1, errno, "read input file");
+ if(result != (FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE)))
+ error(1, 0, "input data size, expected %d but got %d", FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE), result);
+
+ /* write the waveform buffer */
+ result = write(fft256stream_dev_fd, in_buf, FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE));
+ if(result < 0)
+ error(1, errno, "write waveform buffer");
+ if(result != (FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE)))
+ error(1, 0, "output data size, expected %d but got %d", FFT_CALC_POINTS * sizeof(IN_SAMPLE_TYPE), result);
+
+ /* capture the start value of the GT */
+ g_start_time = get_gt_value();
+
+ for(j = 0 ; j < FFT_IN_ROUNDS ; j++) {
+ /* fetch the preprocessed stream from the FPGA, 16 bit input 24/32 bit output */
+ result = read(fft256stream_dev_fd, out_buf, FFT_POINTS * sizeof(OUT_SAMPLE_TYPE));
+ if(result < 0)
+ error(1, errno, "read from fft256stream_dev_fd");
+ if (result != (int)(FFT_POINTS * sizeof(OUT_SAMPLE_TYPE)))
+ error(1, 0, "fft256stream_dev_fd output data size, expected %d but got %d", FFT_POINTS * sizeof(OUT_SAMPLE_TYPE), result);
+
+ /* write the output data */
+ result = write(output_fd, out_buf, FFT_POINTS * sizeof(OUT_SAMPLE_TYPE));
+ if(result < 0)
+ error(1, errno, "write output file");
+ if(result != (FFT_POINTS * sizeof(OUT_SAMPLE_TYPE)))
+ error(1, 0, "output data size, expected %d but got %d", FFT_POINTS * sizeof(OUT_SAMPLE_TYPE), result);
+ }
+
+ /* capture the end value of the GT */
+ g_end_time = get_gt_value();
+
+ /* close the input and output files and fft dev */
+ close(fft256stream_dev_fd);
+ close(output_fd);
+ close(input_fd);
+
+ /* free storage for input, output and config buffers */
+ NE10_FREE (out_buf);
+ NE10_FREE (in_buf);
+
+ print_results();
+ release_everything();
+ return 0;
+}
+