What is Vcu Bhl Mcp2518fd

VCU_BHL_MCP2518FD is a communication protocol board that integrates an ESP32 microcontroller with an MCP2518FD CAN controller, designed for automotive applications such as the E650 Dashboard.

Use cases

Use cases include monitoring vehicle parameters such as RPM and power, controlling relays for various functions, and integrating with other automotive systems via CAN communication.

How to use

To use VCU_BHL_MCP2518FD, connect the specified pins according to the pinout diagram, configure the baud rate to 500kbps, and utilize the provided functions for controlling relays, reading voltages, and managing PWM signals.

Key features

Key features include support for both input and output data formats, control of relays, reading of analog voltages, and PWM signal generation. It operates at a baud rate of 500kbps and supports both Intel and Motorola data formats.

Where to use

VCU_BHL_MCP2518FD is suitable for automotive applications, particularly in vehicle dashboards and control systems where CAN communication is required.

VCU_BHL Board Communication Protocol

• Pinout (ESP32)
  • 02 : LED Built-in
  • 05 : CS (SPI)
  • 25 : Digital Input1
  • 25 : Digital Input2
  • 27 : Relay1
  • 04 : Relay2
  • 22 : Buzzer
  • 32 : Analog Input1
  • 33 : Analog Input2
  • 34 : Acceletor Input
  • 13 : PWM1
  • 14 : PWM2
• baud rate 500kbps
• Intel format
• Extended

data input

• ID: 0x1500A150

Byte	Description
0	BIT-4 : Relay1 , BIT-0 : Relay2
1	error code
2	Freq PWM1 (LOW Byte)
3	Freq PWM1 HIGH Byte
4	Duty PWM1
5	Freq PWM2 LOW Byte
6	Freq PWM2 HIGH Byte
7	Duty PWM2

data output

• ID: 0x150050A1

Byte	Description
0	BIT-4 : Relay1 , BIT-0 : Relay2
1	error code
2	Freq PWM1 (LOW Byte)
3	Freq PWM1 HIGH Byte
4	Duty PWM1
5	Freq PWM2 LOW Byte
6	Freq PWM2 HIGH Byte
7	Duty PWM2

• ID: 0x150050A2

Byte	Description
0	BIT-4 : D_INPUT1 , BIT-0 : D_INPUT2
1	error code
2	Volt Acceletor (LOW Byte)
3	Volt Acceletor (HIGH Byte)
4	Volt AnalogInput1 (LOW Byte)
5	Volt AnalogInput1 (HIGH Byte)
6	Volt AnalogInput2 (LOW Byte)
7	Volt AnalogInput2 (HIGH Byte)

Function

• control Relay

Relay(channel, state);

• Read Voltage

readVolt(analogPin);

• PWM

pwm(channel, frequency, duty_cycle);

• Error code

error_code = 0;

E650 Dashboard Communication Protocol

• Pinout
  • A03 : The seat belt is not fastened with the indication (12V-)
  • A08 : CAN-H
  • A09 : CAN-L
  • A10 : GND
  • A11 : BATT(12V+)
  • A12 : TGN (12V+)
  • A20 : Braking fault indication (12V-)
• baud rate 500kbps
• Motorola format
• Standard

data input

• ID: 0x101

Byte	Description	Offset	resolution	Unit
0	RPM (HIGH Byte)	-15,000	1	rpm
1	RPM (LOW Byte)
5	Power			%POWER

• ID: 0x112

Byte	Description
6	[BIT-3] --> Motor overheating indication
6	[BIT-4] --> Motor fault indication

• ID: 0x251

Byte	Description	Offset	resolution	Unit
0	Voltage gauge (HIGH Byte)		0.01	V
1	Voltage gauge (LOW Byte)
2	Current meter (HIGH Byte)	-500	0.1	A
3	Current meter (LOW Byte)
4	Fuel gauge			%

• ID: 0x226

Byte	Description	Offset	resolution	Unit
0	[BIT-1] --> ABS indication
1	Speed (HIGH Byte)		0.05625	km/h
2	Speed (LOW Byte)

• ID: 0x302

Byte	Description
0	[BIT-4] ----------> Right turn
0	[BIT-5] ----------> Left turn
0	[BIT-7] ----------> Rear fog lights
1	[BIT-4, 5, 6, 7] --> Door alarm indications
5	[BIT-5] ----------> Position lights
5	[BIT-7] ----------> High beam

• ID: 0x390

Byte	Description	Offset	resolution	Unit
3	[BIT-6] --> System failure
4	Range (HIGH Byte)			km
5	Range (LOW Byte)

• ID: 0x3C0

Byte	Description
0	[BIT-0] --> Run preparation (Ready)
1	[BIT-0] --> Power reduction
5	[BIT-7] --> Park brake
6	rd gear --> (0x00:R, 0x01:N, 0x02:D, 0x03:S)

• ID: 0x3C3

Byte	Description
3	Charge status indicatoin --> ((0x10:Flashing, 0x20:Solid on)
5	[BIT-0] -------------------> Charging cable
5	[BIT-1] -------------------> Power battery failure
5	[BIT-2] -------------------> Indication of insulation failure
5	[BIT-3] -------------------> Battery cut-off
6	[BIT-0] -------------------> Power battery heating indication

• ID: 0x3C6

Byte	Description
0	[BIT-0] --> EPS indications

• ID: 0x5B3

Byte	Description
5	Auxiliary battery charge indication (DCDC_Fault)–> 0x07:Light up

• ID: 0x228

Byte	Description
0	[BIT-2] --> Tire pressure monitoring status 1
0	[BIT-3] --> Tire pressure monitoring status 2

• ID: 0x345

Byte	Description
0	[BIT-0] --> Tire pressure monitoring status 3
0	[BIT-3] --> Tire pressure monitoring status 4

data input (Cycle 1000 ms)

• ID: 0x623

Byte	Description
0	Accrued miles (HIGH Byte)
1	Accrued miles …^…
2	Accrued miles (LOW Byte)
4	[BIT-6] --> safety belt (0:Close, 1:Open)
4	[BIT-7] --> Brake failure (0:Normal, 1:Fault)

• ID: 0x624

Byte	Description
0	Product code (HIGH Byte)
1	Product code …^…
2	Product code …^…
3	Product code (LOW Byte)
4	Hardware version (HIGH Byte)
5	Hardware version (LOW Byte)
6	Software version (HIGH Byte)
7	Software version (LOW Byte)

Function

• Gauge

set_E650_Dashboard_Gauge(Speed, RPM, Fuel, Voltage, Current, Range, Power);

• Gear

set_E650_Dashboard_Gear(Gear('R', 'N', 'D', 'S'), Gear_effective_position, Run_Preparation);

• Turn Signal

set_E650_Dashboard_TurnSignal(turnLeft, turnRight);

• Light

set_E650_Dashboard_Light(position_light, high_beam, rear_fog);

• Door alarm

set_E650_Dashboard_Door_alarm(Door1, Door2, Door3, Door4);

• Alarm

set_E650_Dashboard_Alarm(Park brake, ESP, Power reduction, Battery cut-off, ABS, Charging cable, Charge_status(0:Off, 1:Flashing, 2:Solid On));

• Failure

set_E650_Dashboard_Failure(System failure, Battery failure, Motor_fault, Motor_overheating, Auxiliary battery, Insulation failure);

• Tire_pressure

set_E650_Dashboard_Tire_pressure(Wheel1, Wheel2, Wheel3, Wheel4);

• Send data

send_E650_Dashboard();

Original source

​
This library is possible thanks to original Longan Labs CAN FD Library library. Thank you, Longan Labs.

License

MIT

Overview

Repositories