#librm.h notes

This is the EE RPC code to access the module RMMAN in my PS2.

RMMAN is in rom1 not rom0, to access it you must load the rom0:ADDDRV module, then you can load it manually. If the rom0:SIO2MAN has been loaded you MUST reboot the IOP and load rom1:SIO2MAN fresh else it will not work. The rom1:PADMAN looks to use the XPADMAN RPC interface so use the appropriate library from PS2SDK.

To use it is the same as using the PAD library.

Call RMMan_Init() to initialise the RPC interface. Call RMMan_Open(port, slot, data) to open the port with the remote in it. Data should be a 64byte aligned data structure of 256 bytes. Call RMMan_Read(port, slot) to read out the current status.

Check the status value equals either RM_READY or RM_KEYPRESSED to check its state. If (status == RM_KEYPRESSED) then the button is set to one of the RM keys defines in librm.h

The remote only has a concept of one keypress at a time, if you press more than one then neither is registered.

When you hold the button then this button value is returned, when you release the button RM_RELEASED will be returned.

When you press (or hold) any directional arrow button on the remote, 2 button values will be returned: first DVD section button, then PS2 section button, then the value that button was released. For example when you press UP, then RMMan_Read() will return

RM_DVD_UP
RM_PS2_UP
RM_RELEASED

Each 2 minutes with no action RMMAN will return RM_IDLE followed by RM_RELEASED value.

Sony Remote Theory

PS2 remote is from Sony20 remote family. That means that Remote sends a 20-bit length signal, which is then parsed and translated into hex. Input IR signal has some internal standards, in short, 20 bits are divided into 3 blocks (8-5-7 bits in each block). For example, the IR signal for RM_PS2_SQUARE will be

11011010-11010-1011111

The first block 11011010 in decimal will be 28, this block is identical on all Sony remotes. The second block 11010 in decimal will be 218, this block is responsible for a specific device. In our case 218 is the codename for PS2. PS2 also accepts block 26 for DVD side buttons. These 2 families are called: 28.218 and 28.26, both are supported by PS2. The third block is the actual button code (7 bits) in the range 0-127.

PS2 IR code conversion

PS2 will accept any 20 bit IR code and will convert it into its own format. For example RM_PS2_SQUARE IR 20-bit code will be in hex:

DAD5F

PS2 will add trailing Zeroes and change endian: DAD5F -> DAD5F000 -> 00 F0 D5 DA In short - 3 bytes can get only 2 values (0xDAD or 0x49D) for PS2 and DVD side. 2 bytes: button number (higher bit always zero)

RMMAN revision history

Firstly RMMAN was introduced in SCPH-18000 with DVD version 2.00. To get it to work in older models, you should install a DVD player update. The next revision was introduced when SCPH-5xxxx was released. The next revision was introduced when SCPH-7xxxx (slim) was released. Also in SCPH-5xxxx appeared new module RMMAN2 The next revision was introduced when SCPH-7xxxx (slim) was released.

Were released 2 remote revisions: SCPH-10170 and SCPH-10420. The first came with an external IR receiver, which can be plugged into the controller port. The latter one contains 2 additional buttons: EJECT and RESET and has no eternal IR reciever. These 2 buttons work only on SLIM models with a built-in IR receiver. The external IR receiver has no effect when plugged into Slim PS2.

Undocumented features

PS2 will accept additional IR commands which are not presented on its remote. Some standard DVD commands from the 28.26 family are supported. The most useful additional commands from the PS2 side (28.218 family) will be digital POWER_ON and POWER_OFF commands. These commands by default will work only on SLIM models.

SCMD

It seems that there are 2 SCMD commands for RMMAN: 0x1E - ReadSIRc - will return pressed button code and stat value: as an example: 0014 DAD1 6000, where 00 60 D1 DA - button code. 0x1F - IgnoreSIRc - seems that this will disable IR completely

SCMD command 0x1E is presented on PS3 Backward Compatible. On PS3 it just replicates each controller button press.

Programmable IR remotes

Lirc format will accept 20-bit code, you only need to reverse it and translate it into hex. Example: RM_PS2_SQUARE

11011010110101011111
in reverse
11111010101101011011
in hex
0x00000000000FAB5B

Other information about IR signal:

Frequency=40000
Time Base=600
One=2,-1
Zero=1,-1
Prefix=4,-1
Message Time=45000

Credits

Information about Sony remotes taken from http://www.hifi-remote.com/sony/Sony_ps2.htm