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Car_test
OBD II see: https://os.mbed.com/users/okini3939/notebook/obd2-can-bus/
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main.cpp
00001 #include "mbed.h" 00002 #include "OBD2.h" 00003 00004 DigitalOut led1(LED1), led2(LED2), led3(LED3), led4(LED4); 00005 Serial pc(USBTX, USBRX); 00006 OBD2 obd(p30, p29); 00007 00008 float readObd2 (int cmd) { 00009 00010 if (obd.request(cmd)) { 00011 return -1; 00012 } 00013 return obd.read(); 00014 } 00015 00016 int main() { 00017 int i; 00018 float f; 00019 00020 pc.baud(115200); 00021 pc.printf("--- OBD2\n\r"); 00022 led1 = 1; 00023 00024 for (;;) { 00025 if (pc.readable()) { 00026 i = 0; 00027 switch (pc.getc()) { 00028 case '1': i = ENGINE_LOAD; break; 00029 case '2': i = THROTTLE; break; 00030 case '3': i = FUEL_LEVEL; break; 00031 case '4': i = ENGINE_COOLANT_TEMP; break; 00032 case '5': i = INTAKE_TEMP; break; 00033 case '6': i = AMB_AIR_TEMP; break; 00034 case '7': i = INTAKE_PRESSURE; break; 00035 case '8': i = ENGINE_RPM; break; 00036 case '9': i = VEHICLE_SPEED; break; 00037 } 00038 00039 if (i) { 00040 f = readObd2(i); 00041 pc.printf("PID=%02x, Result=%f\r\n", i, f); 00042 } 00043 led2 = !led2; 00044 } 00045 } 00046 }
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