SLMX4 Health Firmware – Protocol Buffer

Back

The defined protocol buffers specification includes a number of message types which are only used for testing and/or development purposes. This section will show some examples of what the binary data looks like for the Start/Stop commands, and the health message.

In the binary data representations below, the first four bytes indicate the length of the message.

The format is:
[len][data]

Health-specific Protobuf files

• .proto
• .options

Start

The Start command uses opcode 3 with an empty payload type. This results in the bytes:

0x4 0x0 0x0 0x0 0x8 0x3 0x12 0x0

Stop

The Stop command uses opcode 4 also with an empty payload. This results in the bytes:

0x4 0x0 0x0 0x0 0x8 0x4 0x12 0x0

ACK

Both the Start and Stop commands will be acknowledged on reception by the device. An acknowledgement message has the opcode 0 and an acknowledgement type payload which reflects the original opcode being acknowledged. The ACK for a Start command is:

0x4 0x0 0x0 0x0 0x12 0x2 0x8 0x3

The ACK for a Stop command is:

0x4 0x0 0x0 0x0 0x12 0x2 0x8 0x4

Health

Once started the radar will begin streaming data in the form of two messages: a health message, and a respiration waveform. The first four bytes indicate the length, which is 0x56 or 86 bytes. Example health message:

0x56 0x0 0x0 0x0 0x8 0x11 0x52 0x52 0x8 0x1 0x10 0x1 0x18 0x1 0x20 0x1 0x2d 0x3e 0x9b 0x10 0x3f 0x35 0x0 0x0 0xc8 0x42 0x3d 0x0 0xe0 0xc4 0x41 0x45 0x0 0x0 0x84 0x42 0x4d 0x8c 0x3f 0x92 0x3f 0x55 0xcd 0xcc 0x6 0x42 0x5d 0x9a 0x99 0xed 0x41 0x65 0x89 0x8 0x65 0x42 0x6a 0x20 0x0 0x80 0xf5 0x43 0x0 0x0 0x0 0x0 0xb8 0x65 0x81 0x41 0x0 0x0 0x0 0x0 0x8c 0x3f 0x92 0x3f 0x0 0x0 0x0 0x0 0x59 0x5f 0x86 0x40 0xbd 0xa6 0xba 0x40

Respiration Waveform

The respiration waveform has the opcode 2 with a payload of vector type. This payload starts off with two integer values which both indicate the vector length. The vector data itself are encoded as single-precision float values.

Example respiration waveform:

0xbb 0x3 0x0 0x0 0x8 0x2 0x2a 0xb6 0x7 0x8 0xec 0x1 0x12 0xb0 0x7 0x2f 0x6a 0xfa 0x3d 0xc0 0xb3 0xe4 0x3d 0xe1 0x94 0xc6 0x3d 0x6b 0xf0 0xa5 0x3d 0xe9 0xbf 0x83 0x3d 0xbd 0xf1 0x43 0x3d 0x3d 0xd3 0x7 0x3d 0x5 0xed 0xad 0x3c 0xb9 0x8d 0x6f 0xbd 0x10 0xca 0x93 0xbd 0xed 0x92 0xa8 0xbd 0xd7 0xee 0xb6 0xbd 0x4f 0x28 0xbc 0xbd 0x59 0xac 0xb9 0xbd 0xbb 0x72 0xad 0xbd 0xb 0xda 0x9b 0xbd 0x76 0xa8 0x81 0xbd 0x8b 0x5f 0x3f 0xbd 0xe3 0xe4 0xe8 0xbc 0xb7 0xa3 0x24 0xbc 0x3d 0xc6 0xd 0x3c 0x57 0x44 0xdc 0x3c 0x9f 0x81 0x36 0x3d 0x86 0x83 0x74 0x3d 0x9c 0xf2 0x92 0x3d 0x31 0x49 0xa3 0x3d 0x1a 0x9e 0xac 0x3d 0x8f 0xf 0xae 0x3d 0xbf 0xe5 0xa9 0x3d 0xfb 0x18 0x9b 0x3d 0x45 0xab 0x84 0x3d 0x59 0x97 0x4c 0x3d 0x35 0x3c 0x5 0x3d 0xa9 0x8a 0x5b 0x3c 0x64 0x35 0xa1 0xbb 0x9d 0xf3 0xbd 0xbc 0xb1 0xb2 0x28 0xbd 0x2b 0xbd 0x6d 0xbd 0x11 0x96 0x92 0xbd 0x85 0xa4 0xa7 0xbd 0x5e 0x20 0xb3 0xbd 0xe6 0xb8 0xb5 0xbd 0xf9 0xa1 0xae 0xbd 0xf 0x8c 0xa0 0xbd 0x6d 0xd9 0x88 0xbd 0xde 0xb9 0x54 0xbd 0xbe 0x8e 0xf 0xbd 0x7a 0x46 0x90 0xbc 0x0 0x80 0xd0 0x37 0x63 0xac 0x86 0x3c 0xfc 0x8d 0xfb 0x3c 0xc6 0x2a 0x31 0x3d 0x3a 0xb7 0x59 0x3d 0x7c 0xc9 0x77 0x3d 0x82 0xe9 0x81 0x3d 0x64 0xe3 0x80 0x3d 0x20 0x6e 0x74 0x3d 0xab 0x4 0x56 0x3d 0x4e 0x92 0x29 0x3d 0xa0 0xf1 0xde 0x3c 0x55 0xbd 0x46 0x3c 0x40 0xb0 0x6b 0xbb 0x2c 0x64 0x9d 0xbc 0xd 0xc5 0xd 0xbd 0x37 0x12 0x48 0xbd 0x1f 0xb4 0x71 0xbd 0x66 0xbe 0x84 0xbd 0x44 0x1c 0x88 0xbd 0x30 0xd9 0x84 0xbd 0xcd 0xc0 0x6d 0xbd 0x42 0xd9 0x44 0xbd 0xc4 0x26 0x14 0xbd 0x6 0x9e 0xb9 0xbc 0x38 0x8a 0x5 0xbc 0xf3 0xb5 0xc8 0x3b 0x6f 0xcc 0x96 0x3c 0x46 0x95 0xe9 0x3c 0xe5 0xca 0x12 0x3d 0x63 0xee 0x29 0x3d 0xdd 0xbe 0x39 0x3d 0x9f 0x8a 0x3b 0x3d 0x21 0xea 0x2e 0x3d 0x45 0x53 0x15 0x3d 0x71 0x55 0xe1 0x3c 0x55 0x7d 0x8d 0x3c 0xd3 0xfc 0xa7 0x3b 0x19 0x9 0xa 0xbc 0xc1 0xea 0xb6 0xbc 0x8b 0x20 0xe 0xbd 0xb0 0x8 0x37 0xbd 0x66 0x31 0x50 0xbd 0x80 0x5b 0x57 0xbd 0xd4 0x77 0x4c 0xbd 0xf 0x94 0x35 0xbd 0xf3 0x26 0x13 0xbd 0x40 0x6f 0xce 0xbc 0xea 0x26 0x54 0xbc 0x9a 0xb9 0xb9 0x37 0x8f 0xfc 0x4d 0x3c 0xf3 0x8f 0xbf 0x3c 0xa1 0x87 0x5 0x3d 0x92 0xdc 0x25 0x3d 0x1a 0xff 0x3d 0x3d 0x57 0x60 0x49 0x3d 0xa0 0x98 0x4a 0x3d 0xd1 0x54 0x3c 0x3d 0xba 0xd6 0x1e 0x3d 0xfa 0xfe 0xeb 0x3c 0x5 0x1d 0x89 0x3c 0x9e 0xf7 0x35 0x3b 0x1a 0x4d 0x48 0xbc 0x6c 0xb2 0xdb 0xbc 0xc7 0xcd 0x27 0xbd 0xa9 0x32 0x5d 0xbd 0x6c 0x54 0x84 0xbd 0x56 0x53 0x92 0xbd 0x55 0x33 0x99 0xbd 0xbc 0xb4 0x97 0xbd 0x23 0x3d 0x8f 0xbd 0x7c 0x44 0x82 0xbd 0xa9 0x2a 0x60 0xbd 0xbf 0x3b 0x33 0xbd 0x8b 0x53 0x1 0xbd 0x8d 0xf4 0x99 0xbc 0x3f 0xf7 0xcb 0xbb 0x80 0xc8 0x9d 0x3b 0x54 0x2c 0x60 0x3c 0xbb 0xbb 0xa4 0x3c 0xd2 0x35 0xca 0x3c 0xd7 0xb3 0xdb 0x3c 0x4c 0x82 0xd8 0x3c 0x3e 0x1d 0xc0 0x3c 0x46 0x89 0x8e 0x3c 0xe6 0x17 0x14 0x3c 0xe6 0xed 0x90 0xba 0x17 0x6c 0x54 0xbc 0xa0 0xd3 0xcb 0xbc 0x17 0xc7 0x14 0xbd 0x43 0x39 0x3d 0xbd 0x80 0xac 0x5a 0xbd 0xa6 0x61 0x6a 0xbd 0xf2 0x3c 0x6d 0xbd 0x6e 0x87 0x60 0xbd 0x9c 0x6b 0x46 0xbd 0x64 0x89 0x22 0xbd 0x5 0x72 0xf3 0xbc 0xc1 0x53 0x99 0xbc 0xa9 0x49 0xea 0xbb 0x22 0x6d 0x8b 0x3b 0x5c 0xd9 0x73 0x3c 0x57 0x59 0xc4 0x3c 0x97 0xd5 0xff 0x3c 0xd3 0x2e 0x13 0x3d 0x42 0x60 0x1b 0x3d 0x87 0x5b 0x17 0x3d 0x34 0x56 0x9 0x3d 0xb 0xd1 0xe2 0x3c 0x10 0xfa 0xa0 0x3c 0xaf 0x64 0x15 0x3c 0x60 0xcb 0xe 0xbb 0x7c 0x90 0x5d 0xbc 0x1e 0x26 0xc4 0xbc 0x9f 0xd 0x5 0xbd 0x34 0x44 0x1b 0xbd 0x34 0x12 0x25 0xbd 0x62 0x5a 0x22 0xbd 0xcd 0xde 0x14 0xbd 0x2f 0xca 0xf9 0xbc 0xda 0xb 0xb9 0xbc 0xd6 0xcf 0x5c 0xbc 0x4b 0x30 0x7e 0xbb 0x40 0xc 0xba 0x3b 0x55 0xb9 0x70 0x3c 0xb4 0x2c 0xbc 0x3c 0x22 0x2d 0xe5 0x3c 0x16 0x47 0x4 0x3d 0x1e 0x6d 0xd 0x3d 0xcd 0x9a 0xc 0x3d 0xb1 0x37 0xfe 0x3c 0xc 0xda 0xce 0x3c 0x29 0x23 0x92 0x3c 0x17 0x48 0xa 0x3c 0x4d 0xb5 0x7 0xbb 0x34 0x2e 0x4f 0xbc 0x9c 0xfe 0xb7 0xbc 0x67 0xeb 0xfb 0xbc 0x89 0x6f 0x17 0xbd 0x73 0x9d 0x28 0xbd 0xcf 0x45 0x29 0xbd 0xbe 0x3e 0x1a 0xbd 0xe4 0x41 0x5 0xbd 0x57 0xf4 0xd3 0xbc 0x61 0x59 0x95 0xbc 0xc2 0x80 0x26 0xbc 0x19 0xe 0x10 0xbb 0x15 0x1c 0xa9 0x3b 0x92 0xb1 0x42 0x3c 0xad 0x73 0x89 0x3c 0xae 0x2e 0xa5 0x3c 0x19 0x24 0xb3 0x3c 0x36 0xb4 0xae 0x3c 0x4c 0x53 0x99 0x3c 0xba 0xfc 0x6d 0x3c 0xa7 0xaa 0x2 0x3c 0x55 0x23 0x16 0x3a 0x40 0x33 0xf1 0xbb 0xc7 0x85 0x77 0xbc 0x35 0x2b 0xb4 0xbc 0x90 0x38 0xe0 0xbc 0xea 0xbc 0xf8 0xbc 0x3 0xfe 0xfe 0xbc 0x76 0x4a 0xf2 0xbc 0xa2 0x19 0xcf 0xbc 0x9 0x29 0x9f 0xbc 0x2b 0x81 0x4d 0xbc 0x44 0xc6 0x9c 0xbb 0x5f 0xc6 0x4f 0x3b 0x8a 0xf5 0x32 0x3c 0x4c 0x21 0x91 0x3c 0xeb 0xf2 0xbc 0x3c 0xec 0xbd 0xcb 0x3c 0x85 0xe7 0xce 0x3c 0x0 0x7a 0xc9 0x3c 0xe4 0x7c 0xb3 0x3c 0xa2 0x38 0x8d 0x3c 0xae 0x7 0x3a 0x3c 0xb 0x14 0x4a 0x3b 0xf3 0x69 0xae 0xbb 0xba 0x93 0x60 0xbc 0x11 0x1 0xb1 0xbc 0xa 0xf5 0xe7 0xbc 0xb9 0xf8 0x6 0xbd 0xd5 0x26 0xf 0xbd 0xb9 0x41 0xf 0xbd 0xb3 0xbc 0x5 0xbd 0xea 0x9c 0xda 0xbc