Subject:
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Re: LegOS + Lego Remote
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Tue, 18 Jul 2000 15:09:55 GMT
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Viewed:
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4760 times
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here are the diffs, apply against 0.2.4...
um, not sure how to do multi-file diffs, so there are 5 files here; note that
dll.exe needs to be rebuilt to handle the changed parity...
still looking in the kernel for a clean place to stick in timeout code, for now
that has to be done in user code (unless you just want the 0 to 1 pulses)...
call lnp_remote_set_handler with your remote handler as the callback...
chris
patch against util/dll-src/rcxtty.c
126c126
< dcb.Parity = 0; // 0-4=no,odd,even,mark,space
---
> dcb.Parity = 1; // 0-4=no,odd,even,mark,space
patch against kernel/lnp-logical.c
212c212
< S_MR =SMR_P_NONE;
---
> S_MR =SMR_P_ODD;
patch against include/lnp/lnp.h
48a49,53
> //! handler for remote
> /*! arguments are (buttonstate)
> */
> typedef void (*lnp_remote_handler_t) (unsigned int);
54a60,62
> //! dummy remote packet handler
> #define LNP_DUMMY_REMOTE ((lnp_remote_handler_t)0)
66a75,77
> //! packets from remote have no ports
> extern lnp_remote_handler_t lnp_remote_handler;
84a96,101
> }
>
> //! set the remote packet handler
> extern inline void lnp_remote_set_handler(lnp_remote_handler_t handler)
> {
> lnp_remote_handler = handler;
patch against include/lnp/sys/lnp.h
44a45,47
> //! length of header from remote, -1 because first byte is used to id • sequence
> #define LNP_REMOTE_HEADER_LENGTH (5-1)
50c53,65
< LNPwaitCRC
---
> LNPwaitCRC,
>
> //! states when waiting for remote
> LNPwaitRH1, // note that first byte is consumed by LNPwaitHeader
> LNPwaitRH2,
> LNPwaitRH3,
> LNPwaitRH4,
> LNPwaitRB0,
> LNPwaitRB0I,
> LNPwaitRB1,
> LNPwaitRB1I,
> LNPwaitRC,
> LNPwaitRCI,
68d82
<
patch against kernel/lnp.c
72a73,75
> //! remote handler
> lnp_remote_handler_t lnp_remote_handler;
75a79,87
> //! remote header bytes excluding first byte
> const unsigned char lnp_remote_sequence[LNP_REMOTE_HEADER_LENGTH] = • {0xff,0x00,0xd2,0x2d};
>
> //! button masks from remote
> unsigned char lnp_remote_button0;
> unsigned char lnp_remote_button1;
>
> //! checksum from remote
> unsigned char lnp_remote_checksum; • 194a207,211
> if ( b == 0x55 )
> {
> lnp_integrity_state = LNPwaitRH1;
> }
> else • 225a243,313
>
> // state machine to handle remote
> case LNPwaitRH1:
> case LNPwaitRH2:
> case LNPwaitRH3:
> case LNPwaitRH4:
> // waiting for header bytes
> // compressed code to save mem
> if ( b == lnp_remote_sequence[ lnp_integrity_state-LNPwaitRH1 ] )
> {
> lnp_integrity_state++;
> }
> else
> {
> lnp_integrity_state = LNPwaitHeader;
> };
> break;
>
> case LNPwaitRB0:
> lnp_remote_button0 = b;
> lnp_integrity_state++;
> break;
>
> case LNPwaitRB0I:
> if ( (0xff-(unsigned)b) == lnp_remote_button0 )
> {
> lnp_integrity_state++;
> }
> else
> {
> lnp_integrity_state = LNPwaitHeader;
> };
> break;
>
> case LNPwaitRB1:
> lnp_remote_button1 = b;
> lnp_integrity_state++;
> break;
>
> case LNPwaitRB1I:
> if ( (0xff-(unsigned)b) == lnp_remote_button1 )
> {
> lnp_integrity_state++;
> }
> else
> {
> lnp_integrity_state = LNPwaitHeader;
> };
> break;
>
> case LNPwaitRC:
> lnp_remote_checksum = 0xd2 + lnp_remote_button0 + lnp_remote_button1;
> if ( b == lnp_remote_checksum )
> {
> lnp_integrity_state++;
> }
> else
> {
> lnp_integrity_state = LNPwaitHeader;
> };
>
> break;
>
> case LNPwaitRCI:
> // if checksum valid and remote handler has been installed, call remote • handler
> if ( (b == 0xff - lnp_remote_checksum) && (lnp_remote_handler) )
> {
> lnp_remote_handler( (lnp_remote_button0<<8)+lnp_remote_button1 );
> }; // else just drop remote info
> lnp_integrity_state = LNPwaitHeader;
> break; • 286a375
> lnp_remote_handler=LNP_DUMMY_REMOTE;
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