1 files changed, 29 insertions, 0 deletions
diff --git a/fw/hid-dials/tools/cwt_wavelet_header_gen.py b/fw/hid-dials/tools/cwt_wavelet_header_gen.py
new file mode 100644
index 0000000..8be785b
--- /dev/null
+++ b/fw/hid-dials/tools/cwt_wavelet_header_gen.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+
+import textwrap
+
+import scipy.signal as sig
+import numpy as np
+
+if __name__ == '__main__':
+    import argparse
+    parser = argparse.ArgumentParser()
+    parser.add_argument('n', type=int, help='Window size')
+    parser.add_argument('w', type=float, help='Wavelet width')
+    parser.add_argument('-v', '--variable', default='cwt_ricker_table', help='Name for alias variable pointing to generated wavelet LUT')
+    args = parser.parse_args()
+    
+    print(f'/* CWT Ricker wavelet LUT for {args.n} sample window of width {args.w}. */')
+    varname = f'cwt_ricker_{args.n}_window_{str(args.w).replace(".", "F")}'
+    print(f'const float {varname}[{args.n}] = {{')
+
+    win = sig.ricker(args.n, args.w)
+    par = ' '.join(f'{f:>015.12e}f,' for f in win)
+    print(textwrap.fill(par,
+        initial_indent=' '*4, subsequent_indent=' '*4,
+        width=120,
+        replace_whitespace=False, drop_whitespace=False))
+    print('};')
+    print()
+    print(f'const float * const {args.variable} __attribute__((weak)) = {varname};')
+