VIP

Renaesas R5F35MCEJFB

Implements the communication between the main processor and the CAN/LIN busses.

Also performs watchdog function, and will reset the main processor if communication is disrupted. (handled by vim_app)

SPI speed: 4Mhz

SPI mode: 3 (SPI CPHA=1 SPI CPOL = 1)

SPI bits per word: 8

Device: /dev/spidev1.0

Messages

Message ID Table

ID	Message	Sender
0x002	Communications Established	VIP CMU
0x030	Heart Beat	CMU
0x031	Heart Beat Request	VIP
0x037	VIP Self Reset	VIP
0x039		VIP
0x03B		VIP
0x03C		VIP
0x03D		VIP
0x03E		VIP
0x03F		VIP
0x043	Power Hold	CMU
0x048	Emergency	CMU
0x04A	MIC Power	CMU
0x04B	Camera Power	CMU
0x050	Normal Mode	CMU
0x051	Power Down Ready	CMU
0x081	ATOD or Batt Monitor	VIP
0x083	ATOD or Batt Monitor	VIP
0x084	Mouseapp Encoder1 CW	VIP
0x085	Mouseapp Encoder1 CCW	VIP
0x086	KEYAPP Encoder2 CW	VIP
0x087	KEYAPP Encoder2 CCW	VIP
0x088	KEYAPP Invalid	VIP
0x089	KEYAPP Invalid	VIP
0x08A	KEYAPP All Buttons Released	VIP
0x08B	KEYAPP SW1 Button1 Pressed	VIP
0x08C	KEYAPP SW1 Button2 Pressed	VIP
0x08D	KEYAPP SW1 Button3 Pressed	VIP
0x08E	KEYAPP SW1 Button4 Pressed	VIP
0x08F	KEYAPP SW1 Button5 Pressed	VIP
0x090	KEYAPP SW1 Button6 Pressed	VIP
0x091	KEYAPP SW1 Button7 Pressed	VIP
0x092	KEYAPP SW1 Button8 Pressed	VIP
0x093	KEYAPP SW1 Button9 Pressed	VIP
0x094	KEYAPP SW1 Button10 Pressed	VIP
0x095	KEYAPP SW1 Short to Ground	VIP
0x096	KEYAPP SW1 Short to Ground	VIP
0x097	KEYAPP SW1 Open	VIP
0x098	KEYAPP SW2 Button1 Pressed	VIP
0x099	KEYAPP SW2 Button2 Pressed	VIP
0x09A	KEYAPP SW2 Button3 Pressed	VIP
0x09B	KEYAPP SW2 Button4 Pressed	VIP
0x09C	KEYAPP SW2 Button5 Pressed	VIP
0x09D	KEYAPP SW2 Button6 Pressed	VIP
0x09E	KEYAPP SW2 Button7 Pressed	VIP
0x09F	KEYAPP SW2 Button8 Pressed	VIP
0x0A0	KEYAPP SW2 Button9 Pressed	VIP
0x0A1	KEYAPP SW2 Button10 Pressed	VIP
0x0A2	KEYAPP SW2 Short to Ground	VIP
0x0A3	KEYAPP SW2 Short to Ground	VIP
0x0A4	KEYAPP SW2 Open	VIP
0x0A5	KEYAPP SW3 Button1 Pressed	VIP
0x0A6	KEYAPP SW3 Button2 Pressed	VIP
0x0A7	KEYAPP SW3 Button3 Pressed	VIP
0x0A8	KEYAPP SW3 Button4 Pressed	VIP
0x0A9	KEYAPP SW3 Button5 Pressed	VIP
0x0AA	KEYAPP SW3 Button6 Pressed	VIP
0x0AB	KEYAPP SW3 Button7 Pressed	VIP
0x0AC	KEYAPP SW3 Button8 Pressed	VIP
0x0AD	KEYAPP SW3 Button9 Pressed	VIP
0x0AE	KEYAPP SW3 Button10 Pressed	VIP
0x0AF	KEYAPP SW3 Short to Ground	VIP
0x0B0	KEYAPP SW3 Short to Ground	VIP
0x0B1	KEYAPP SW3 Open	VIP
0x0B2	KEYAPP SW4 Button1 Pressed	VIP
0x0B3	KEYAPP SW4 Button2 Pressed	VIP
0x0B4	KEYAPP SW4 Button3 Pressed	VIP
0x0B5	KEYAPP SW4 Button4 Pressed	VIP
0x0B6	KEYAPP SW4 Button5 Pressed	VIP
0x0B7	KEYAPP SW4 Button6 Pressed	VIP
0x0B8	KEYAPP SW4 Button7 Pressed	VIP
0x0B9	KEYAPP SW4 Button8 Pressed	VIP
0x0BA	KEYAPP SW4 Button9 Pressed	VIP
0x0BB	KEYAPP SW4 Button10 Pressed	VIP
0x0BC	KEYAPP SW4 Short to Ground	VIP
0x0BD	KEYAPP SW4 Short to Ground	VIP
0x0BE	KEYAPP SW4 Open	VIP
0x0BF	KEYAPP Max	VIP
0x0C0	GPIO Event (0x0C0)	VIP
0x0C1	ACK (Message length is always 3)	VIP
0x0C2	NACK (Message length is always 3)	VIP
0x0e0	GPIO Event (CAN_Day_Mode)	VIP
0x0e1	GPIO Event (Safe_Shutdown	VIP
0x0e2	GPIO Event (Can_Ignition_Status)	VIP
0x100	Wheel Speed	VIP
0x116	Yaw Rate	VIP
0x118	Reverse Lamp	VIP
0x11E		VIP
0x140		VIP
0x144	VBS Ready	VIP
0x180		VIP
0x1C0		VIP
0x144	VBS Ready
0x160	SPI Ready	vim_app -> vbs

GPIO Event (0x0C0)

Byte	GPIO Event
0	Mic Power Good
1	Camera Power Good
2	USB Power Good
3	Reverse
6	DO_USB_PWR_EN
7	Can Inhibit Sense

GPIO Event (0x0E0)

Byte	GPIO Event
0	CAN_Day_Mode

GPIO Event (0x0E1)

Byte	GPIO Event
0	Safe_Shutdown

GPIO Event (0x0E2)

Byte	GPIO Event
0	CAN_Ignition_Status

Message format

20 bytes long

First two bytes are message id

Third byte is length

Last byte is checksum

Checksum calculation

    unsigned int checksum = 0;
    for (int x = 0; x < 19; x += 1) {
		checksum = msg[x] + checksum;
    }

Key message

First two bytes message id

3rd = 0 for release 1 for pressed

Kernel Modules

com.jci.cpp.drivers.GpioChip.ko

Looks to emulate a GpioChip. Doesn’t actually interact with hardware, just reacts to userspace reads and writes to it’s exported GPIO pins at /sys/class/gpio/gpiochip224

cmu_io.ko

Provides VIP interrupt(GPIO2_IO10) to vim_app through /dev/cmu_io

Misc

VIP CPU

Running Renasas MR30 RTOS

1 Cyclic task 21 normal tasks

CAN BUS IDs

Below is a list of all known CAN bus Message IDs that the VIP is listening for.

The PRIVATE bus is used for communication between the CMU, CD player, TAU

The PUBLIC bus is used to communcate with the rest of the car

INDEX	BUS	CAN Message ID
000	PRIVATE	0x470
001	PRIVATE	0x452
002	PRIVATE	0x451
003	PRIVATE	0x450
004	PRIVATE	0x425
005	PRIVATE	0x424
006	PRIVATE	0x423
007	PRIVATE	0x422
008	PRIVATE	0x421
009	PRIVATE	0x41b
010	PRIVATE	0x41a
011	PRIVATE	0x419
012	PRIVATE	0x418
013	PRIVATE	0x417
014	PRIVATE	0x416
015	PRIVATE	0x415
016	PRIVATE	0x414
017	PRIVATE	0x412
018	PRIVATE	0x411
019	PRIVATE	0x410
020	PRIVATE	0x310
021	PRIVATE	0x397
022	PRIVATE	0x393
023	PRIVATE	0x392
024	PRIVATE	0x391
025	PRIVATE	0x390
026	PRIVATE	0x38C
027	PRIVATE	0x38B
028	PRIVATE	0x381
029	PRIVATE	0x380
030	PRIVATE	0x37C
031	PRIVATE	0x379
032	PRIVATE	0x370
033	PRIVATE	0x36E
034	PRIVATE	0x36D
035	PRIVATE	0x36C
036	PRIVATE	0x36B
037	PRIVATE	0x36A
038	PRIVATE	0x366
039	PRIVATE	0x365
040	PRIVATE	0x364
041	PRIVATE	0x363
042	PRIVATE	0x362
043	PRIVATE	0x361
044	PRIVATE	0x351
045	PRIVATE	0x116
046	PRIVATE	0x115
048	PUBLIC	0x4FE
049	PUBLIC	0x4FD
050	PUBLIC	0x4FB
051	PUBLIC	0x4FA
052	PUBLIC	0x4F7
053	PUBLIC	0x4F3
054	PUBLIC	0x4F0
055	PUBLIC	0x4E0
056	PUBLIC	0x4DE
057	PUBLIC	0x4DC
058	PUBLIC	0x4DB
059	PUBLIC	0x4DA
060	PUBLIC	0x4D9
061	PUBLIC	0x4D8
062	PUBLIC	0x4D7
063	PUBLIC	0x4D6
064	PUBLIC	0x4D5
065	PUBLIC	0x4D4
066	PUBLIC	0x4D3
067	PUBLIC	0x4D2
068	PUBLIC	0x4D1
069	PUBLIC	0x4D0
070	PUBLIC	0x4CA
071	PUBLIC	0x49C
072	PUBLIC	0x49B
073	PUBLIC	0x499
074	PUBLIC	0x498
075	PUBLIC	0x495
076	PUBLIC	0x494
077	PUBLIC	0x492
078	PUBLIC	0x491
079	PUBLIC	0x48E
080	PUBLIC	0x48D
081	PUBLIC	0x48B
082	PUBLIC	0x48A
083	PUBLIC	0x488
084	PUBLIC	0x487
085	PUBLIC	0x485
086	PUBLIC	0x484
087	PUBLIC	0x482
088	PUBLIC	0x481
089	PUBLIC	0x47B
090	PUBLIC	0x477
091	PUBLIC	0x445
092	PUBLIC	0x43E
093	PUBLIC	0x43B
094	PUBLIC	0x436
095	PUBLIC	0x42E
096	PUBLIC	0x425
097	PUBLIC	0x420
098	PUBLIC	0x415
099	PUBLIC	0x40a
100	PUBLIC	0x35f
101	PUBLIC	0x340
102	PUBLIC	0x274
103	PUBLIC	0x25d
104	PUBLIC	0x24b
105	PUBLIC	0x24a
106	PUBLIC	0x249
107	PUBLIC	0x240
108	PUBLIC	0x228
109	PUBLIC	0x21d
110	PUBLIC	0x21c
111	PUBLIC	0x21b
112	PUBLIC	0x215
113	PUBLIC	0x211
114	PUBLIC	0x20a
115	PUBLIC	0x202
116	PUBLIC	0x165
117	PUBLIC	0x130
118	PUBLIC	0x0fd
119	PUBLIC	0x09F
120	PUBLIC	0x09E
121	PUBLIC	0x09B
122	PUBLIC	0x09A
123	PUBLIC	0x08a
124	PUBLIC	0x086
125	PUBLIC	0x079
126	PUBLIC	0x078
127	PUBLIC	0x7EA
128	PUBLIC	0x7E9
129	PUBLIC	0x7E8
130	PUBLIC	0x7DF
131	PUBLIC	0x7CF
132	PUBLIC	0x7CC
133	PUBLIC	0x7BF
134	PUBLIC	0x7B8
135	PUBLIC	0x7AC
136	PUBLIC	0x7A8
137	PUBLIC	0x79B
138	PUBLIC	0x784
139	PUBLIC	0x76C
140	PUBLIC	0x769
141	PUBLIC	0x768
142	PUBLIC	0x74E
143	PUBLIC	0x74C
144	PUBLIC	0x73F
145	PUBLIC	0x73C
146	PUBLIC	0x73B
147	PUBLIC	0x739
148	PUBLIC	0x738
149	PUBLIC	0x72F
150	PUBLIC	0x72E
151	PUBLIC	0x728
152	PUBLIC	0x71E
153	PUBLIC	0x70E

Input Events

VIP Message ID	Button Name	Input Event Code (Hex)	Input Event Code	Use
0x84	WheelUp	0x06	REL_HWHEEL	Horizontal Scroll/Rotary Input
0x85	WheelDown	0x06	REL_HWHEEL	Horizontal Scroll/Rotary Input
0x86	Encoder2CW	0x32	KEY_M	Volume
0x87	Encoder2CCW	0x31	KEY_N	Volume
0x89	Invalid
0x94	SW1Button10	0x35	KEY_SLASH	Mute
0xA7	SW3Button3	0x12	KEY_E
0xA8	SW3Button4	0x13	KEY_R	Navi
0xA9	SW3Button5	0x14	KEY_T
0xAA	SW3Button6	0x67	KEY_UP	Up
0xAB	SW3Button7	0x1C	KEY_ENTER	Enter
0xAC	SW3Button8	0x6C	KEY_DOWN	Down
0xAD	SW3Button9	0x69	KEY_LEFT	Left
0xAE	SW3Button10	0x6A	KEY_RIGHT	Right
0xB2	SW4Button1	0x66	KEY_HOME	Home
0xB3	SW4Button2	0x0E	KEY_BACKSPACE	Back