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Learn pointers, actually check code with a compiler, and fix some mistakes, phew
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int CCR_IPCBufPoolAllocate(void) //020038AC+ int handle = CCR_IPCBufPoolAllocate();+ int handle = CCR_IPCBufPoolAllocate();+ int handle = CCR_IPCBufPoolAllocate();+
nsysccr is Nintendo System CCR which interfaces with the IOS-PAD part of IOSU through various /dev nodes. See the [[IOSU#IOS-PAD|IOSU]] wiki page for a list.
nsysccr is Nintendo System CCR which interfaces with the IOS-PAD part of IOSU through various /dev nodes. See the [[IOSU#IOS-PAD|IOSU]] wiki page for a list.
−==Reverse Engineered (Pseudo)Code==
+==Code Translation==
===CCR - Misc. Gamepad ===
===CCR - Misc. Gamepad ===
<syntaxhighlight lang="C">
<syntaxhighlight lang="C">
−#define CCR_CDC_Handle 0x10000618
+#define CCR_CDC_Handle 0x10000618 /* Base addresses in .data in IDA- */
−#define CCR_IPCBufPool 0x10000620
+#define CCR_IPCBufPool 0x10000620 /* -Probably global vars when building */
#define CCR_ERROR_BASE 0xFFEE0000
#define CCR_ERROR_BASE 0xFFEE0000
#define CCR_ERROR_NO_BUFPOOL (CCR_ERROR_BASE + 2)
#define CCR_ERROR_NO_BUFPOOL (CCR_ERROR_BASE + 2)
−uint32_t* CCR_IPCBufPoolAllocate(void) //020038AC
{
{
− return IPCBufPoolAllocate(&CCR_IPCBufPool, 0x3A4);
+ return IPCBufPoolAllocate(*CCR_IPCBufPool, 0x3A4);
}
}
−void CCR_IPCBufPoolFree(int handle) //020038BC
+void CCR_IPCBufPoolFree(uint32_t *handle) //020038BC
{
{
− return IPCBufPoolFree(&CCR_IPCBufPool, handle);
+ return IPCBufPoolFree(*CCR_IPCBufPool, handle);
}
}
int CCREnableDrhCheck(int value) //02002D14
int CCREnableDrhCheck(int value) //02002D14
{
{
− uint32_t *handle = CCR_IPCBufPoolAllocate();
if (!handle)
if (!handle)
return CCR_ERROR_NO_BUFPOOL;
return CCR_ERROR_NO_BUFPOOL;
− handle[0] = value;
+ *handle = value;
− handle[0x80/4] = handle;
+ handle[32] = &handle;
− handle[0x84/4] = 4;
+ handle[33] = 4;
− int ret = IOS_Ioctlv(&CCR_CDC_Handle, 0x385, 1, 0, handle + 0x80);
+ int ret = IOS_Ioctlv(*CCR_CDC_Handle, 0x385, 1, 0, &handle[32]);
CCR_IPCBufPoolFree(handle);
CCR_IPCBufPoolFree(handle);
return ret;
return ret;
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int CCREnablePowerButton(int value) //02002D9C
int CCREnablePowerButton(int value) //02002D9C
{
{
− uint32_t *handle = CCR_IPCBufPoolAllocate();
if (!handle)
if (!handle)
return CCR_ERROR_NO_BUFPOOL;
return CCR_ERROR_NO_BUFPOOL;
− handle[0] = value;
+ *handle = value;
− handle[0x80/4] = handle;
+ handle[32] = &handle;
− handle[0x84/4] = 4;
+ handle[33] = 4;
− int ret = IOS_Ioctlv(&CCR_CDC_Handle, 0x386, 1, 0, handle + 0x80);
+ int ret = IOS_Ioctlv(*CCR_CDC_Handle, 0x386, 1, 0, &handle[32]);
CCR_IPCBufPoolFree(handle);
CCR_IPCBufPoolFree(handle);
return ret;
return ret;
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int CCRSetCompatMode(int value) //02002E24
int CCRSetCompatMode(int value) //02002E24
{
{
− uint32_t *handle = CCR_IPCBufPoolAllocate();
if (!handle)
if (!handle)
return CCR_ERROR_NO_BUFPOOL;
return CCR_ERROR_NO_BUFPOOL;
− handle[0] = value;
+ *handle = value;
− handle[0x80/4] = handle;
+ handle[32] = &handle;
− handle[0x84/4] = 4;
+ handle[33] = 4;
− int ret = IOS_Ioctlv(&CCR_CDC_Handle, 0x387, 1, 0, handle + 0x80);
+ int ret = IOS_Ioctlv(*CCR_CDC_Handle, 0x387, 1, 0, &handle[32]);
CCR_IPCBufPoolFree(handle);
CCR_IPCBufPoolFree(handle);
return ret;
return ret;
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void CCREnableFwUpdateMode(void) //020038CC
void CCREnableFwUpdateMode(void) //020038CC
{
{
− if(bspWrite("CCRH", 0, "Reset") == 0) //bspWrite in coreinit, interfaces with IOS-BSP
+ int var = 2;
+ if(bspWrite("CCRH", 0, "Reset", 4, &var) == 0) //bspWrite in coreinit, interfaces with IOS-BSP, r3-r7
COSWarn(1, "Successfully reset host and ENabled fw update\n");
COSWarn(1, "Successfully reset host and ENabled fw update\n");
else
else
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void CCRDisableFwUpdateMode(void) //02003970
void CCRDisableFwUpdateMode(void) //02003970
{
{
− if(bspWrite("CCRH", 0, "Reset") == 0) //bspWrite in coreinit, interfaces with IOS-BSP
+ int var = 4;
+ if(bspWrite("CCRH", 0, "Reset", 4, &var) == 0) //bspWrite in coreinit, interfaces with IOS-BSP, r3-r7
COSWarn(1, "Successfully reset host and DISabled fw update\n");
COSWarn(1, "Successfully reset host and DISabled fw update\n");
else
else
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===CCRCDC - Gamepad Communications Device Class API===
===CCRCDC - Gamepad Communications Device Class API===
<syntaxhighlight lang="C">
<syntaxhighlight lang="C">
−uint16_t CCRCDCCalcCRC16(uint32_t *data, uint32_t size) //02002EAC
+uint16_t CCRCDCCalcCRC16(uint8_t *data, uint32_t size) //02002EAC
{
{
uint16_t crc = 0xFFFF;
uint16_t crc = 0xFFFF;
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for (int j = 0; j < size; j++)
for (int j = 0; j < size; j++)
{
{
− crc = (uint16_t)(crc ^ data[j]); //load in new byte
+ crc ^= data[j]; //load in new byte
for (int i = 0; i < 8; i++)
for (int i = 0; i < 8; i++)
{
{
if ((crc & 0x0001) == 1) //if LSB is set, do xor
if ((crc & 0x0001) == 1) //if LSB is set, do xor
− crc = (uint16_t)((crc >> 1) ^ 0x8408);
+ crc = (crc >> 1) ^ 0x8408;
else //just cycle 1
else //just cycle 1
crc >>= 1;
crc >>= 1;