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author | jaseg <git-bigdata-wsl-arch@jaseg.de> | 2021-04-09 18:38:02 +0200 |
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committer | jaseg <git-bigdata-wsl-arch@jaseg.de> | 2021-04-09 18:38:57 +0200 |
commit | 50998fcfb916ae251309bd4b464f2c122e8cb30d (patch) | |
tree | 4ecf7a7443b75ab51c4dc0c0fc9289342dc7d6a0 /controller/fw/tools/freq_meas_test.c | |
parent | 312fee491cfab436d52db4b6265107e20f3e1293 (diff) | |
download | master-thesis-50998fcfb916ae251309bd4b464f2c122e8cb30d.tar.gz master-thesis-50998fcfb916ae251309bd4b464f2c122e8cb30d.tar.bz2 master-thesis-50998fcfb916ae251309bd4b464f2c122e8cb30d.zip |
Repo re-org
Diffstat (limited to 'controller/fw/tools/freq_meas_test.c')
-rw-r--r-- | controller/fw/tools/freq_meas_test.c | 106 |
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; -} |