Jasmine Karlsson
/
train_rail
New project
main.cpp
- Committer:
- jasminealice
- Date:
- 2018-06-08
- Revision:
- 17:b7b5f40cebff
- Parent:
- 16:55c3c5727f14
- Child:
- 18:f5824ba95892
File content as of revision 17:b7b5f40cebff:
#include "mbed.h" #include "TextLCD.h" #include "mcp23017.h" #include "train.h" //Board 1 /*---------------------------------------------------------------------------- Pin definitions *----------------------------------------------------------------------------*/ DigitalOut Track(p20); // train track DigitalOut myled1(LED1); DigitalOut myled2(LED2); DigitalOut myled3(LED3); DigitalOut myled4(LED4); DigitalOut externalLed1(p15); DigitalOut externalLed2(p16); DigitalOut externalLed3(p17); DigitalOut externalLed4(p18); TextLCD lcd(p22, p21, p23, p24, p25, p26); // lcd //AnalogIn Ain(p20); // pot. met. /* Train detectors d2, d21, d22 (trainstation) */ // detect_21(p17); //DigitalIn detect_22(p16); //DigitalIn detect_2(p15); DigitalIn sw1(p29); DigitalIn sw2(p30); DigitalIn sw3(p11); DigitalIn sw4(p12); //InterruptIn sw1(p5); InterruptIn inter0(p13); InterruptIn inter1(p14); /*---------------------------------------------------------------------------- Addresses *----------------------------------------------------------------------------*/ const unsigned int DCCaddress_darkRed = 0x01; const unsigned int DCCaddress_lightRed = 0x03; const unsigned int DCCaddress_switch = 0x06; /*---------------------------------------------------------------------------- Train movement *----------------------------------------------------------------------------*/ //move backwards/reverse const unsigned int DCCinst_reverse = 0x48; //reverse speed //speed dial forward const unsigned int DCCinst_step2 = 0x72; //step 2 const unsigned int DCCinst_step4 = 0x73; //step 4 const unsigned int DCCinst_step6 = 0x68; //step 6 1/4 speed const unsigned int DCCinst_step13 = 0x78; //step 13 1/2 speed const unsigned int DCCinst_step20 = 0x75; //step 20 3/4 speed const unsigned int DCCinst_step28 = 0x7F; //step 28 Full speed const unsigned int DCCinst_switch1 = 0x81; //Activate switch1 const unsigned int DCCinst_switch2 = 0x82; //Activate switch2 const unsigned int DCCinst_switch3 = 0x84; //Activate switch3 const unsigned int DCCinst_switch4 = 0x88; //Activate switch4 const unsigned int DCCinst_deactive_switch = 0x80; //Deactivate switches //stop const unsigned int DCCinst_stop = 0x40; //forward and stop 01100000 /*---------------------------------------------------------------------------- Function definitions *----------------------------------------------------------------------------*/ void readVoltage(); bool readDetector(); bool readSwitch(DigitalIn theSwitch); void DCC_send_command(unsigned int address, unsigned int inst, unsigned int repeat_count); //send command /*---------------------------------------------------------------------------- Main *----------------------------------------------------------------------------*/ int main() { /*sw1.rise(&testInterupt2); sw1.fall(&testInterupt); inter0.rise(&riseFunction); inter1.rise(&riseFunction);*/ lcd.printf("Start the journey"); while(1){ wait(0.2); if(readSwitch(sw1)){ lcd.cls(); lcd.printf("Forward"); DCC_send_command(DCCaddress_darkRed,DCCinst_step13,10); // forward half speed train address 3 }else{ lcd.cls(); lcd.printf("Stop"); DCC_send_command(DCCaddress_darkRed,DCCinst_stop,10); // forward half speed train address 3 } if(readSwitch(sw2)){ DCC_send_command(DCCaddress_switch,DCCinst_switch1,10); myled1 = 1; externalLed1 = 1; DCC_send_command(DCCaddress_switch,DCCinst_deactive_switch,10); myled1 = 0; externalLed1 = 0; DCC_send_command(DCCaddress_switch,DCCinst_switch2,10); //Make sure to deactivate 2 right after activating it myled2 = 1; externalLed2 = 1; DCC_send_command(DCCaddress_switch,DCCinst_deactive_switch,10); myled2 = 0; externalLed2 = 0; DCC_send_command(DCCaddress_switch,DCCinst_switch3,10); myled3 = 1; externalLed3 = 1; DCC_send_command(DCCaddress_switch,DCCinst_deactive_switch,10); myled3 = 0; externalLed3 = 0; DCC_send_command(DCCaddress_switch,DCCinst_switch4,10); myled4 = 1; externalLed4 = 1; DCC_send_command(DCCaddress_switch,DCCinst_deactive_switch,10); myled4 = 0; externalLed4 = 0; } } } /*---------------------------------------------------------------------------- Functions *----------------------------------------------------------------------------*/ /* void testInterupt(){ lcd.cls(); myled = 1; lcd.printf("In interupt function"); lcd.printf("%d", sw1.read()); myled4 = 0; } void testInterupt2(){ lcd.cls(); myled = 0; lcd.printf("In interupt2 function"); lcd.printf("%d", sw1.read()); myled4 = 1; } void riseFunction(){ lcd.printf("In rise function"); lcd.printf("%d", inter1.read()); } void fallFunction(){ lcd.printf("In fall function"); lcd.printf("%d", inter1.read()); }*/ bool readSwitch(DigitalIn theSwitch){ int val = theSwitch.read(); lcd.printf("%d", val); if(val == 1) return true; else return false; } bool readDetector(){ /*int val1 = detect_2.read(); if(val1 == 1) { lcd.cls(); lcd.printf("Detect 2: "); lcd.printf("%d", val1); return true; } int val2 = detect_21.read(); if(val2 == 1) { lcd.cls(); lcd.printf("Detect 21: "); lcd.printf("%d", val2); return true; } int val3 = detect_22.read(); if(val3 == 1) { lcd.cls(); lcd.printf("Detect 22: "); lcd.printf("%d", val3); return true; }*/ return false; } void readVoltage(){ /*float f = Ain.read(); //Read voltage value float Vin = f *3.3; lcd.printf("%.2f", Vin); wait(0.1); lcd.printf("\n");*/ } void DCC_send_command(unsigned int address, unsigned int inst, unsigned int repeat_count) { unsigned __int64 command = 0x0000000000000000; // __int64 is the 64-bit integer type unsigned __int64 temp_command = 0x0000000000000000; unsigned __int64 prefix = 0x3FFF; // 14 "1" bits needed at start unsigned int error = 0x00; //error byte //calculate error detection byte with xor error = address ^ inst; //combine packet bits in basic DCC format command = (prefix<<28)|(address<<19)|(inst<<10)|((error)<<1)|0x01; //printf("\n\r %llx \n\r",command); int i=0; //repeat DCC command lots of times while(i < repeat_count) { temp_command = command; //loops through packet bits encoding and sending out digital pulses for a DCC command for (int j=0; j<64; j++) { if((temp_command&0x8000000000000000)==0) { //test packet bit //send data for a "0" bit Track=0; wait_us(100); Track=1; wait_us(100); } else { //send data for a "1"bit Track=0; wait_us(58); Track=1; wait_us(58); } // next bit in packet temp_command = temp_command<<1; } i++; } }