Added code for using the ac:u service.

libctru/include/ctr/AC.h

@@ -0,0 +1,8 @@
+#ifndef AC_H
+#define AC_H
+
+Result ACU_GetWifiStatus(Handle servhandle, u32 *out);
+Result ACU_WaitInternetConnection();
+
+#endif
+

libctru/source/AC.c

@@ -0,0 +1,87 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctr/types.h>
+
+#include <ctr/AC.h>
+#include <ctr/svc.h>
+#include <ctr/srv.h>
+
+Result ACU_cmd1(Handle servhandle, u32 *ptr)//Unknown what this cmd does at the time of writing. (ptr=0x200-byte outbuf)
+{
+	u32 tmp0, tmp1;
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	tmp0 = cmdbuf[0x100>>2];
+	tmp1 = cmdbuf[0x104>>2];
+
+	cmdbuf[0] = 0x00010000;
+	cmdbuf[0x100>>2] = 0x00800002;
+	cmdbuf[0x104>>2] = (u32)ptr;
+
+	if((ret = svc_sendSyncRequest(servhandle))!=0)return ret;
+
+	cmdbuf[0x100>>2] = tmp0;
+	cmdbuf[0x104>>2] = tmp1;
+
+	return (Result)cmdbuf[1];
+}
+
+Result ACU_cmd26(Handle servhandle, u32 *ptr, u8 val)//Unknown what this cmd does at the time of writing. (ptr=0x200-byte inbuf/outbuf)
+{
+	u32 tmp0, tmp1;
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	tmp0 = cmdbuf[0x100>>2];
+	tmp1 = cmdbuf[0x104>>2];
+
+	cmdbuf[0] = 0x00260042;
+	cmdbuf[1] = (u32)val;
+	cmdbuf[0x100>>2] = 0x00800002;
+	cmdbuf[0x104>>2] = (u32)ptr;
+	cmdbuf[2] = 0x00800002;
+	cmdbuf[3] = (u32)ptr;
+
+	if((ret = svc_sendSyncRequest(servhandle))!=0)return ret;
+
+	cmdbuf[0x100>>2] = tmp0;
+	cmdbuf[0x104>>2] = tmp1;
+
+	return (Result)cmdbuf[1];
+}
+
+Result ACU_GetWifiStatus(Handle servhandle, u32 *out)
+{
+	Result ret=0;
+	u32 *cmdbuf = getThreadCommandBuffer();
+
+	cmdbuf[0] = 0x000D0000;
+
+	if((ret = svc_sendSyncRequest(servhandle))!=0)return ret;
+
+	*out = cmdbuf[2];
+
+	return (Result)cmdbuf[1];
+}
+
+Result ACU_WaitInternetConnection()
+{
+	Handle servhandle = 0;
+	Result ret=0;
+	u32 outval=0;
+
+	if((ret = srv_getServiceHandle(NULL, &servhandle, "ac:u"))!=0)return ret;
+
+	while(1)
+	{
+		ret = ACU_GetWifiStatus(servhandle, &outval);
+		if(ret==0 && outval==1)break;
+	}
+
+	svc_closeHandle(servhandle);
+
+	return ret;
+}
+