WiinScale: simple reads a connected balance board and displays measured weight.

wiiuse_board/main.c

@@ -0,0 +1,64 @@
+#include "wiiuse.h"
+
+#define MAX_WIIMOTES 5
+static wiimote** wiimotes;
+static int board;
+
+__declspec(dllexport) int wiiuse_board_init()
+{
+	wiimotes = wiiuse_init(MAX_WIIMOTES);
+	int count = wiiuse_find(wiimotes, MAX_WIIMOTES, 5);
+	count = wiiuse_connect(wiimotes, count);
+	board = -1;
+	for (int i = 0; i < count; i++)
+		if (board == -1 && wiimotes[i]->exp.type == EXP_WII_BOARD)
+			board = i;
+		else
+			wiiuse_disconnect(wiimotes[i]);
+			
+	if (board == -1)
+		wiiuse_cleanup(wiimotes, MAX_WIIMOTES);
+
+	return board != -1;
+}
+
+__declspec(dllexport) int wiiuse_board_read(float* weight, float* x, float* y)
+{
+	int read = 0;
+	if (board != -1)
+	{
+		while (wiiuse_poll(wiimotes, MAX_WIIMOTES))
+		{
+			switch (wiimotes[board]->event)
+			{
+				case WIIUSE_EVENT:
+				{
+					struct wii_board_t* wb = (wii_board_t*)&wiimotes[board]->exp.wb;
+					*weight = wb->tl + wb->tr + wb->bl + wb->br;
+					*x = ((wb->tr + wb->br) / *weight) * 2 - 1;
+					*y = ((wb->tl + wb->tr) / *weight) * 2 - 1;
+					read++;
+					break;
+				}
+
+				case WIIUSE_WII_BOARD_CTRL_REMOVED:
+				case WIIUSE_DISCONNECT:
+				case WIIUSE_UNEXPECTED_DISCONNECT:
+				{
+					return 0;
+					break;
+				}
+			}
+		}
+	}
+	return read;
+}
+
+__declspec(dllexport) void wiiuse_board_shutdown()
+{
+	if (board != -1 && wiimotes[board]->state == WIIMOTE_STATE_CONNECTED)
+		wiiuse_disconnect(wiimotes[board]);
+	wiiuse_cleanup(wiimotes, MAX_WIIMOTES);
+	wiimotes = 0;
+	board = -1;
+}