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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