add pot. support; L4 trig; eagle schematic draft

2 files changed, 19 insertions, 6 deletions

diff --git a/source/cordic.cpp b/source/cordic.cpp
index d2997f2..29ee068 100644
--- a/source/cordic.cpp
+++ b/source/cordic.cpp
@@ -1,8 +1,8 @@
 #include "cordic.hpp"
 #include "hal.h"
 
-namespace cordic {
 #if !defined(TARGET_PLATFORM_L4)
+namespace cordic {
 
 void init()
 {
@@ -93,16 +93,21 @@ double tan(double x) {
     return tanx;
 }
 
+}
 #else // L4
+#include <cmath>
+namespace cordic {
 
 void init() {}
 
-double mod(double, double) { return 0; }
+float mod(float a, float b) {
+    return a - (b * std::floor(a / b));
+}
 
-double cos(double) { return 0; }
-double sin(double) { return 0; }
-double tan(double) { return 0; }
+float cos(float x) { return std::cos(x); }
+float sin(float x) { return std::sin(x); }
+float tan(float x) { return std::tan(x); }
 
-#endif
 }
+#endif
 
diff --git a/source/cordic.hpp b/source/cordic.hpp
index 5c52fe4..5d640cc 100644
--- a/source/cordic.hpp
+++ b/source/cordic.hpp
@@ -6,11 +6,19 @@ namespace cordic {
 
     void init();
 
+#if !defined(TARGET_PLATFORM_L4)
     double mod(double n, double d);
 
     double cos(double x);
     double sin(double x);
     double tan(double x);
+#else
+    float mod(float n, float d);
+
+    float cos(float x);
+    float sin(float x);
+    float tan(float x);
+#endif
 }
 
 #endif // CORDIC_HPP_