added lpf filter, pwm output

2022-09-10 16:23:33 +02:00
parent 12347b2df2
commit 8c1c99f27f
6 changed files with 264 additions and 31 deletions
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2022 Oleg Borodin  <borodin@unix7.org>
+ */
+
+#ifndef FILTER_H_QWERTY
+#define FILTER_H_QWERTY
+
+
+typedef struct {
+    double x0;
+    double x1;
+    double rc;
+} lpf_t;
+
+void lpf_init(lpf_t *lpf, double freq);
+double lpf_apply(lpf_t *lpf, double x2, double dt);
+
+#endif