Đồ án tốt nghiệp - Design a system to display vehicle parameters Via OBDII Port on smartphones

HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION
FACULTY OF INTERNATIONAL EDUCATION

GRADUATION PROJECT

DESIGN A SYSTEM TO DISPLAY
VEHICLE PARAMETERS VIA OBDII PORT
ON SMARTPHONES

NGUYEN MINH PHU
Student ID: 20145426
NGO TAN TRUNG
Student ID: 20145443

Major: AUTOMOTIVE ENGINEERING
Supervisor: ASSOC. PROF .DR. DO VAN DUNG
Ho Chi Minh City, May 2024

THE SOCIALIST REPUBLIC OF VIETNAM

Independence – Freedom– Happiness


Ho Chi Minh City, January 20, 2023

GRADUATION PROJECT ASSIGNMENT
Student name: _________________________ Student ID: ___________________
Student name: __________________________ Student ID: ___________________
Student name: __________________________ Student ID: ___________________
Major: ________________________________ Class: ________________________
Supervisor: ____________________________ Phone number: _________________
Date of assignment: _____________________ Date of submission: _____________
1. Project title: _________________________________________________________
2. Initial materials provided by supervisor: ___________________________________
3. Content of the project: _________________________________________________
4. Final product: ________________________________________________________
CHAIR OF THE PROGRAM
(Sign with full name)

SUPERVISOR

(Sign with full name)

THE SOCIALIST REPUBLIC OF VIETNAM

Independence – Freedom– Happiness




SUPERVISOR’S EVALUATION SHEET
Student name: ................................................................. Student ID: .................................
Student name: ................................................................. Student ID: .................................
Student name: ................................................................. Student ID: .................................
Major: .....................................................................................................................................
Project title: ............................................................................................................................
................................................................................................................................................
Supervisor: .............................................................................................................................
EVALUATION
1. Content of the project:
..............................................
...

...
ataDecodeDTCsBuf[3 + j] = receive_data_value[j]
if ((3 + j) == (numOfDTCs*2 - 1))
{
FulldataDecodeDTCsBuf = true
break
}
}
}
if (receive_data_value[0] == 0x22)
{
for (uint8_t j = 1 j 8 j++)
{
dataDecodeDTCsBuf[10 + j] = receive_data_value[j]
if ((10 + j) == (numOfDTCs*2 - 1))
{
FulldataDecodeDTCsBuf = true
break
}

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}
}
if (receive_data_value[0] == 0x23)
{
for (uint8_t j = 1 j 8 j++)
{
dataDecodeDTCsBuf[17 + j] = receive_data_value[j]
if ((17 + j) == (numOfDTCs*2 - 1))
{
FulldataDecodeDTCsBuf = true
break
}
}
}
if (receive_data_value[0] == 0x24)
{
for (uint8_t j = 1 j 8 j++)
{
dataDecodeDTCsBuf[24 + j] = receive_data_value[j]
if ((24 + j) == (numOfDTCs*2 - 1))
{
FulldataDecodeDTCsBuf = true
break
}
}
}
if (FulldataDecodeDTCsBuf)
{
decode_DTCs()
}
}
if ((V_old[0] == 0)&amp&amp(V[4] == 1))
{
ReadPendingDTCs()
}
if ((V_old[1] == 0)&amp&amp(V[5] == 1))
{
ReadStoredDTCs()
}
if ((V_old[2] == 0)&amp&amp(V[6] == 1))
ClearDTCs()
V_old[0] = V[4]

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V_old[1] = V[5]
V_old[2] = V[6]
if ((V[4] == 0)&amp&amp(V[5] == 0))
{
sDTCs[0] = empty_String
sDTCs[1] = empty_String
sDTCs[2] = empty_String
sDTCs[3] = empty_String
sDTCs[4] = empty_String
sDTCs[5] = empty_String
}
if (Serial.available())
{
read_buf = Serial.read()
if (read_buf == 3)
ReadStoredDTCs()
if (read_buf == 4)
ClearDTCs()
if (read_buf == 7)
ReadPendingDTCs()
}
}
void onReceived(char variableType, uint8_t variableIndex, String valueAsText)
{
if (variableType == V)
{
float value = valueAsText.toFloat()
if (variableIndex V_memory_count)
V[variableIndex] = value
}
}
String onRequested(char variableType, uint8_t variableIndex)
{
if (variableType == V)
{
if (variableIndex V_memory_count)
return String(V[variableIndex])
else if (variableIndex == 7)
return sDTCs[0]
else if (variableIndex == 8)
return sDTCs[1]

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else if (variableIndex == 9)
return sDTCs[2]
else if (variableIndex == 10)
return sDTCs[3]
else if (variableIndex == 11)
return sDTCs[4]
else if (variableIndex == 12)
return sDTCs[5]
}
return
}
void virtuinoRun()
{
while (espSerial.available())
{
char tempChar = espSerial.read()
if (tempChar == CM_START_CHAR)
{
virtuino.readBuffer = CM_START_CHAR
virtuino.readBuffer += espSerial.readStringUntil(CM_END_CHAR)
virtuino.readBuffer += CM_END_CHAR
String* response = virtuino.getResponse()
espSerial.print(*response)
break
}
}
}
void v(int InMillis)
{
long t = millis() + InMillis
while (millis() t)
virtuinoRun()
}

73