From 47e6268e236e0f133c1e36b363abee05895824ff Mon Sep 17 00:00:00 2001
From: TuxSH <1922548+TuxSH@users.noreply.github.com>
Date: Sun, 17 May 2020 18:17:38 +0100
Subject: [PATCH] Add ptm rtc time commands

---
 libctru/include/3ds/services/ptmsysm.h | 15 ++++++++++++
 libctru/source/services/ptmsysm.c      | 33 ++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/libctru/include/3ds/services/ptmsysm.h b/libctru/include/3ds/services/ptmsysm.h
index f39af46..a1b7053 100644
--- a/libctru/include/3ds/services/ptmsysm.h
+++ b/libctru/include/3ds/services/ptmsysm.h
@@ -81,6 +81,21 @@ Result PTMSYSM_GetWakeReason(PtmSleepConfig *outSleepConfig);
 /// Cancels the "half-awake" state and fully wakes up the 3DS after some delay.
 Result PTMSYSM_Awaken(void);
 
+/// Invalidates the "system time" (cfg block 0x30002)
+Result PTMSYSM_InvalidateSystemTime(void);
+
+/**
+ * @brief Reads the time and date coming from the RTC and converts the result.
+ * @returns The number of milliseconds since 01/01/2000.
+ */
+Result PTMSYSM_GetRtcTime(s64 *outMsY2k);
+
+/**
+ * @brief Writes the time and date coming to the RTC, after conversion.
+ * @param msY2k The number of milliseconds since 01/01/2000.
+ */
+Result PTMSYSM_SetRtcTime(s64 msY2k);
+
 /**
  * @brief Returns 1 if it's a New 3DS, otherwise 0.
  */
diff --git a/libctru/source/services/ptmsysm.c b/libctru/source/services/ptmsysm.c
index de9d2ad..b9b1b85 100644
--- a/libctru/source/services/ptmsysm.c
+++ b/libctru/source/services/ptmsysm.c
@@ -143,3 +143,36 @@ Result PTMSYSM_RebootAsync(u64 timeout)
 
 	return (Result)cmdbuf[1];
 }
+
+Result PTMSYSM_InvalidateSystemTime(void)
+{
+	Result ret;
+	u32 *cmdbuf = getThreadCommandBuffer();
+	cmdbuf[0] = IPC_MakeHeader(0x080D,0,0); // 0x080D0000
+
+	if(R_FAILED(ret = svcSendSyncRequest(ptmSysmHandle)))return ret;
+
+	return (Result)cmdbuf[1];
+}
+
+Result PTMSYSM_GetRtcTime(s64 *outMsY2k)
+{
+	Result ret;
+	u32 *cmdbuf = getThreadCommandBuffer();
+	cmdbuf[0] = IPC_MakeHeader(0x0816,0,0); // 0x08160000
+	if(R_FAILED(ret = svcSendSyncRequest(ptmSysmHandle)))return ret;
+	memcpy(outMsY2k, &cmdbuf[2], 8);
+
+	return (Result)cmdbuf[1];
+}
+
+Result PTMSYSM_SetRtcTime(s64 msY2k)
+{
+	Result ret;
+	u32 *cmdbuf = getThreadCommandBuffer();
+	cmdbuf[0] = IPC_MakeHeader(0x0817,2,0); // 0x08170080
+	memcpy(&cmdbuf[1], &msY2k, 8);
+	if(R_FAILED(ret = svcSendSyncRequest(ptmSysmHandle)))return ret;
+
+	return (Result)cmdbuf[1];
+}