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authorjaseg <git-bigdata-wsl-arch@jaseg.de>2021-04-09 18:38:02 +0200
committerjaseg <git-bigdata-wsl-arch@jaseg.de>2021-04-09 18:38:57 +0200
commit50998fcfb916ae251309bd4b464f2c122e8cb30d (patch)
tree4ecf7a7443b75ab51c4dc0c0fc9289342dc7d6a0 /controller/fw/tools/freq_meas_test.c
parent312fee491cfab436d52db4b6265107e20f3e1293 (diff)
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Repo re-org
Diffstat (limited to 'controller/fw/tools/freq_meas_test.c')
-rw-r--r--controller/fw/tools/freq_meas_test.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/controller/fw/tools/freq_meas_test.c b/controller/fw/tools/freq_meas_test.c
deleted file mode 100644
index e2900ad..0000000
--- a/controller/fw/tools/freq_meas_test.c
+++ /dev/null
@@ -1,106 +0,0 @@
-
-#include <stdint.h>
-#include <math.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/fcntl.h>
-
-#include "freq_meas.h"
-
-void print_usage(void);
-
-void print_usage() {
- fprintf(stderr, "Usage: freq_meas_test [test_data.bin]\n");
-}
-
-int main(int argc, char **argv) {
- if (argc != 2) {
- fprintf(stderr, "Error: Invalid arguments.\n");
- print_usage();
- return 1;
- }
-
- int fd = open(argv[1], O_RDONLY);
- struct stat st;
- if (fstat(fd, &st)) {
- fprintf(stderr, "Error querying test data file size: %s\n", strerror(errno));
- return 2;
- }
-
- if (st.st_size < 0 || st.st_size > 1000000) {
- fprintf(stderr, "Error reading test data: too much test data (size=%zd)\n", st.st_size);
- return 2;
- }
-
- if (st.st_size % sizeof(float) != 0) {
- fprintf(stderr, "Error reading test data: file size is not divisible by %zd (size=%zd)\n", sizeof(float), st.st_size);
- return 2;
- }
-
- char *buf = malloc(st.st_size);
- if (!buf) {
- fprintf(stderr, "Error allocating memory");
- return 2;
- }
-
- fprintf(stderr, "Reading %zd samples test data...", st.st_size/sizeof(float));
- ssize_t nread = 0;
- while (nread < st.st_size) {
- ssize_t rc = read(fd, buf + nread, st.st_size - nread);
-
- if (rc == -EINTR || rc == -EAGAIN)
- continue;
-
- if (rc < 0) {
- fprintf(stderr, "\nError reading test data: %s\n", strerror(errno));
- return 2;
- }
-
- if (rc == 0) {
- fprintf(stderr, "\nError reading test data: Unexpected end of file\n");
- return 2;
- }
-
- nread += rc;
- }
- fprintf(stderr, " done.\n");
-
- const size_t n_samples = st.st_size / sizeof(float);
- float *buf_f = (float *)buf;
-
- int16_t *sim_adc_buf = calloc(sizeof(int16_t), n_samples);
- if (!sim_adc_buf) {
- fprintf(stderr, "Error allocating memory\n");
- return 2;
- }
-
- fprintf(stderr, "Converting and truncating test data...");
- for (size_t i=0; i<n_samples; i++)
- /* Note on scaling: We can't simply scale by 0x8000 (1/2 full range) here. Our test data is nominally 1Vp-p but
- * certain tests such as the interharmonics one can have some samples exceeding that range. */
- sim_adc_buf[i] = buf_f[i] * (0x4000-1);
- fprintf(stderr, " done.\n");
-
- fprintf(stderr, "Starting simulation.\n");
-
- size_t iterations = (n_samples-FMEAS_FFT_LEN)/(FMEAS_FFT_LEN/2);
- for (size_t i=0; i<iterations; i++) {
-
- fprintf(stderr, "Iteration %zd/%zd\n", i, iterations);
- float res = NAN;
- int rc = adc_buf_measure_freq(sim_adc_buf + i*(FMEAS_FFT_LEN/2), &res);
- if (rc)
- printf("ERROR: Simulation error in iteration %zd at position %zd: %d\n", i, i*(FMEAS_FFT_LEN/2), rc);
-
- printf("%09zd %12f\n", i, res);
- }
-
- free(buf);
- free(sim_adc_buf);
- return 0;
-}