From 75bd1ad5a7d4132b09475b327f4b511e658cae0b Mon Sep 17 00:00:00 2001
From: Stanley Huang <stanleyhuangyc@gmail.com>
Date: Thu, 5 Jun 2014 10:53:15 +1000
Subject: Update OBD library for Arduino DUE
---
libraries/OBD/OBD.cpp | 64 +++++++++++++++++++++++++--------------------------
1 file changed, 31 insertions(+), 33 deletions(-)
(limited to 'libraries')
diff --git a/libraries/OBD/OBD.cpp b/libraries/OBD/OBD.cpp
index dd770d9..5b57df9 100644
--- a/libraries/OBD/OBD.cpp
+++ b/libraries/OBD/OBD.cpp
@@ -6,25 +6,24 @@
*************************************************************************/
#include <Arduino.h>
-#include <avr/pgmspace.h>
#include "OBD.h"
//#define DEBUG Serial
//#define REDIRECT Serial
-unsigned int hex2uint16(const char *p)
+uint16_t hex2uint16(const char *p)
{
char c = *p;
- unsigned int i = 0;
+ uint16_t i = 0;
for (char n = 0; c && n < 4; c = *(++p)) {
if (c >= 'A' && c <= 'F') {
c -= 7;
} else if (c>='a' && c<='f') {
c -= 39;
} else if (c == ' ') {
- continue;
+ continue;
} else if (c < '0' || c > '9') {
- break;
+ break;
}
i = (i << 4) | (c & 0xF);
n++;
@@ -32,21 +31,21 @@ unsigned int hex2uint16(const char *p)
return i;
}
-unsigned char hex2uint8(const char *p)
+byte hex2uint8(const char *p)
{
- unsigned char c1 = *p;
- unsigned char c2 = *(p + 1);
+ byte c1 = *p;
+ byte c2 = *(p + 1);
if (c1 >= 'A' && c1 <= 'F')
c1 -= 7;
else if (c1 >='a' && c1 <= 'f')
- c1 -= 39;
+ c1 -= 39;
else if (c1 < '0' || c1 > '9')
return 0;
if (c2 >= 'A' && c2 <= 'F')
c2 -= 7;
else if (c2 >= 'a' && c2 <= 'f')
- c2 -= 39;
+ c2 -= 39;
else if (c2 < '0' || c2 > '9')
return 0;
@@ -85,7 +84,7 @@ char COBD::read()
{
char c = OBDUART.read();
#ifdef REDIRECT
- REDIRECT.write(c);
+ REDIRECT.write(c);
#endif
return c;
}
@@ -218,12 +217,12 @@ void COBD::begin(unsigned long baudrate)
{
OBDUART.begin(OBD_SERIAL_BAUDRATE);
if (baudrate) {
- OBDUART.print("ATBR1 ");
- OBDUART.print(baudrate);
- OBDUART.print('\r');
- OBDUART.end();
- delay(100);
- OBDUART.begin(baudrate);
+ OBDUART.print("ATBR1 ");
+ OBDUART.print(baudrate);
+ OBDUART.print('\r');
+ OBDUART.end();
+ delay(100);
+ OBDUART.begin(baudrate);
}
}
@@ -254,9 +253,8 @@ byte COBD::receive(char* buffer, int timeout)
dataIdleLoop();
}
}
-
- if (buffer) buffer[n] = 0;
- return n;
+ if (buffer) buffer[n] = 0;
+ return n;
}
void COBD::recover()
@@ -276,20 +274,20 @@ bool COBD::init(byte protocol)
for (unsigned char i = 0; i < sizeof(initcmd) / sizeof(initcmd[0]); i++) {
#ifdef DEBUG
- debugOutput(initcmd[i]);
+ debugOutput(initcmd[i]);
#endif
- write(initcmd[i]);
+ write(initcmd[i]);
if (receive(buffer) == 0) {
- return false;
+ return false;
}
delay(50);
}
if (protocol) {
- write("ATSP");
- write('0' + protocol);
- write('\r');
- receive(buffer);
- delay(50);
+ write("ATSP");
+ write('0' + protocol);
+ write('\r');
+ receive(buffer);
+ delay(50);
}
while (available()) read();
@@ -461,7 +459,7 @@ uint16_t COBDI2C::getData(byte pid, int& result)
for (n = 0; n < MAX_PIDS && obdPid[n] != pid; n++);
if (n == MAX_PIDS)
return -1;
-
+
PID_INFO* pi = obdInfo + n;
switch (pid) {
case PID_RPM:
@@ -482,7 +480,7 @@ uint16_t COBDI2C::getData(byte pid, int& result)
case PID_ABSOLUTE_ENGINE_LOAD:
case PID_ETHANOL_PERCENTAGE:
case PID_HYBRID_BATTERY_PERCENTAGE:
- result = (uint16_t)(pi->value * 100 + 50) / 255;
+ result = pi->value * 100 / 255; // %
break;
case PID_MAF_FLOW:
result = pi->value / 100;
@@ -490,14 +488,14 @@ uint16_t COBDI2C::getData(byte pid, int& result)
case PID_TIMING_ADVANCE:
result = (int)pi->value / 2 - 64;
break;
- case PID_CONTROL_MODULE_VOLTAGE: // mV
- result = pi->value;
+ case PID_CONTROL_MODULE_VOLTAGE: // V
+ result = pi->value / 1000;
break;
case PID_ENGINE_FUEL_RATE: // L/h
result = pi->value / 20;
break;
case PID_ENGINE_TORQUE_PERCENTAGE: // %
- result = (uint16_t)pi->value - 125;
+ result = (int)pi->value - 125;
break;
default:
result = pi->value;
--
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