From 2aca6c64ab5f5b0e8a2255413d4845abee2ba34b Mon Sep 17 00:00:00 2001
From: Jason Short <jasonshort@mac.com>
Date: Sat, 21 Apr 2012 15:17:09 -0700
Subject: [PATCH] Added a union for casting floats to ints and back when
storing Floats to the DataFlash
---
ArduCopter/ArduCopter.pde | 6 ++++++
ArduCopter/Log.pde | 13 +++++++++++++
2 files changed, 19 insertions(+)
diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 843d034be..a71f25272 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -488,6 +488,12 @@ static const float radius_of_earth = 6378100; // meters
// Used by Mavlink for unknow reasons
static const float gravity = 9.81; // meters/ sec^2
+// Unions for getting byte values
+union float_int{
+ int32_t int_value;
+ float float_value;
+} float_int;
+
////////////////////////////////////////////////////////////////////////////////
// Location & Navigation
diff --git a/ArduCopter/Log.pde b/ArduCopter/Log.pde
index 0a0b35016..c26a3de01 100644
--- a/ArduCopter/Log.pde
+++ b/ArduCopter/Log.pde
@@ -43,6 +43,19 @@ const struct Menu::command log_menu_commands[] PROGMEM = {
{"disable", select_logs}
};
+static int32_t get_int(float f)
+{
+ float_int.float_value = f;
+ return float_int.int_value;
+}
+
+static float get_float(int32_t i)
+{
+ float_int.int_value = i;
+ return float_int.float_value;
+}
+
+
// A Macro to create the Menu
MENU2(log_menu, "Log", log_menu_commands, print_log_menu);
--
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