System Monitoring _ MCU to CAN

The system monitoring MCU aims to provide the latest system status by leveraging automotive-grade power and MCU. It constantly reports the system thermal, voltage, current information, and power-on sequence through the M12 connector on the panel with CAN bus and digital output.

DO

The DO provide a straight forward status.

	If OS is alive	Else
DO	High	Low

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CAN

A sample parser could be found on https://github.com/qshiwu/NRU-230V-AWP_System_Monitoring

The CAN bus will output a string per second, which involves the following information.

CAN Data

ID	Data0	Data1	Data2	Data3	Data4	Data5	Data6	Data7
0x1B0A0001	DC_IN_H	DC_IN_L	P12VSUS_H	P12VSUS_L	P12VSUS_ISMON_H	P12VSUS_ISMON_L	P5VSUS_H	P5VSUS_L
0x1B0A0002	TEMP_SENSE0_H	TEMP_SENSE0_L	TEMP_SENSE1_H	TEMP_SENSE1_L	TEMP_SENSE2_H	TEMP_SENSE2_L	TEMP_SENSE3_H	TEMP_SENSE3_L
0x1B0A0003	TEMP_SENSE4_H	TEMP_SENSE4_L	TMS320_SUS_PWR_OK	TMS320_MODULE_POWER_ON	TMS320_BIOS_OK	TMS320_MAIN_PWR_OK	TMS320_MODULE_SHDN_N	TMS320_CARRIER_POWER_ON
0x1B0A0004	PC_CPU0_H	PC_CPU0_L	PC_CPU1_H	PC_CPU1_L	PC_CPU2_H	PC_CPU2_L	PC_CPU3_H	PC_CPU3_L
0x1B0A0005	PC_CPU4_H	PC_CPU4_L	PC_CPU5_H	PC_CPU5_L	PC_CPU6_H	PC_CPU6_L	PC_CPU7_H	PC_CPU7_L
0x1B0A0006	PC_RAM_H	PC_RAM_L	0x00	0x00	0x00	0x00	0x00	0x00
0x1B0A0007	PC_CPU_TEMP	PC_CPU_TEMP	PC_CPU_TEMP	PC_CPU_TEMP	PC_GPU_TEMP	PC_GPU_TEMP	PC_GPU_TEMP	PC_GPU_TEMP

Formula table

Name	Raw Voltage (RawV)	Result	Unit
DCIN	DCIN / 2^11 * 3.3	RawV * 32 / 2	V
P12VSUS	P12VSUS / 2^11 * 3.3	RawV * 12 / 2	V
P12VSUS_ISMON	P12VSUS_ISMON / 2^11 * 3.3	(RawV - 0.25) * 28.57	A
P5VSUS	P5VSUS / 2^11 * 3.3	RawV * 12 / 2	V
TEMP_SENSE0	TEMP_SENSE0 / 2^11 * 3.3	Interpolate RawV from Table	°C
TEMP_SENSE1	TEMP_SENSE1 / 2^11 * 3.3	Interpolate RawV from Table	°C
TEMP_SENSE2	TEMP_SENSE2 / 2^11 * 3.3	Interpolate RawV from Table	°C
TEMP_SENSE3	TEMP_SENSE3 / 2^11 * 3.3	Interpolate RawV from Table	°C
TEMP_SENSE4	TEMP_SENSE4 / 2^11 * 3.3	Interpolate RawV from Table	°C
TMS320_SUS_PWR_OK	NA	0 : LOW ; 1 : HIGH	NA
TMS320_MODULE_POWER_ON	NA	0 : LOW ; 1 : HIGH	NA
TMS320_BIOS_OK	NA	0 : LOW ; 1 : HIGH	NA
TMS320_MAIN_PWR_OK	NA	0 : LOW ; 1 : HIGH	NA
TMS320_MODULE_SHDN_N	NA	0 : LOW ; 1 : HIGH	NA
TMS320_CARRIER_POWER_ON	NA	0 : LOW ; 1 : HIGH	NA
PC_CPU0	NA	Hexadecimal to Decimal	%
PC_CPU1	NA	Hexadecimal to Decimal	%
PC_CPU2	NA	Hexadecimal to Decimal	%
PC_CPU3	NA	Hexadecimal to Decimal	%
PC_CPU4	NA	Hexadecimal to Decimal	%
PC_CPU5	NA	Hexadecimal to Decimal	%
PC_CPU6	NA	Hexadecimal to Decimal	%
PC_CPU7	NA	Hexadecimal to Decimal	%
PC_RAM	NA	Hexadecimal to Decimal	MB
PC_CPU_TEMP	NA	IEEE754	°C
PC_GPU_TEMP	NA	IEEE754	°C

Reference Document

28KB

C2000_SensorData_V0.6.xlsx

Open

Power On Sequence with Timestamp

• SUS_PWR_OK: PCBA reports that the sustain power is ready.

• MODULE_PWR_ON: PCBA sends to Jetson AGX Orin after sustain power is ready.

• CARRIER_PWR_ON: Jetson AGX Orin sends a signal to PCBA to enable runtime power.

• MAIN_PWR_OK (runtime okay): PCBA reports that the runtime power is ready.

• BIOS_OK: Jetson AGX Orin reports that it has booted into the OS (via Neousys' startup script).

Voltage Monitoring

• DCIN_SENSE: current DC input voltage

• 12VSUS: 12V sustained power on PCBA. The voltage fluctuation is expected to be smaller than 0.5%

• 5VSUS: 5V sustained power on PCBA. The voltage fluctuation is expected to be smaller than 0.5%

The PoE+ power supply is excluded from 12VSUS.

Current Monitoring

• 12VSUS_ISMON: The current output of 12VSUS

• POE_ISMON: The current output of PoE+ (54V). Read by Jetson I2C

The total system power consumption is: 12VSUS_ISMON * 12VSUS + 54 * POE_ISMON

Thermal Sensor

• Sensor #0: Between M2. M key module and PCBA

• Sensor #1: Between M2. B key module and PCBA

• Sensor #2: Between mPCIe module (w/ SIM) and PCBA

• Sensor #3: Between AGX Orin module and PCBA

• Sensor #4: Near 12VSUS Choke

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