Denver / Mbed 2 deprecated denver_train_proj

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Dependencies:   mbed TextLCD

main.cpp@13:dbf1ead12cee, 2018-06-07 (annotated)

Committer:
carlosperales95
Date:
Thu Jun 07 12:08:47 2018 +0000
Revision:
13:dbf1ead12cee
Parent:
12:e914ca5cd44b
Child:
14:7bb998edd819
tagss

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mglmx 0:4d06a6a8e785 1 #include "mbed.h"
mglmx 3:fe7010b693a0 2 #include "TextLCD.h"
mglmx 1:0ab26889af9b 3 //mbed DCC Model Train Demo
mglmx 1:0ab26889af9b 4
carlosperales95 7:e2b8461d4f05 5 /******PINS AND DECLARATIONS*******/
carlosperales95 7:e2b8461d4f05 6
carlosperales95 7:e2b8461d4f05 7 ///p5
carlosperales95 7:e2b8461d4f05 8 ///p6
carlosperales95 7:e2b8461d4f05 9 ///p7
carlosperales95 7:e2b8461d4f05 10 ///p8
carlosperales95 7:e2b8461d4f05 11
carlosperales95 10:2088b1935a93 12 //RAIL SENSORS - INT0,INT1
carlosperales95 7:e2b8461d4f05 13 //INT0 - p9
carlosperales95 10:2088b1935a93 14 InterruptIn sensors0(p9);
carlosperales95 7:e2b8461d4f05 15 //INT1 - p10
carlosperales95 10:2088b1935a93 16 InterruptIn sensors1(p10);
carlosperales95 7:e2b8461d4f05 17
carlosperales95 7:e2b8461d4f05 18 ///p11
carlosperales95 7:e2b8461d4f05 19 ///p12
carlosperales95 12:e914ca5cd44b 20
carlosperales95 7:e2b8461d4f05 21 //M0 - p13
carlosperales95 7:e2b8461d4f05 22 DigitalIn d21(p13);
carlosperales95 7:e2b8461d4f05 23 //M1 - p14
carlosperales95 7:e2b8461d4f05 24 DigitalIn d22(p14);
carlosperales95 7:e2b8461d4f05 25 //M2 - p15
carlosperales95 7:e2b8461d4f05 26 DigitalIn d23(p15);
carlosperales95 12:e914ca5cd44b 27
carlosperales95 7:e2b8461d4f05 28 //p16
carlosperales95 12:e914ca5cd44b 29 //p17
carlosperales95 12:e914ca5cd44b 30
carlosperales95 11:021210c59a95 31 //BUZZER - p18
carlosperales95 11:021210c59a95 32 DigitalOut buzz(p18); // buzz=0 doesn't beep, buzz=1 beeps
carlosperales95 7:e2b8461d4f05 33
carlosperales95 7:e2b8461d4f05 34 //POTENTIOMETER - p19
carlosperales95 13:dbf1ead12cee 35 AnalogIn pot(p19); //Gives float value pot.read(). Convert analog input to V with f*3.3
carlosperales95 7:e2b8461d4f05 36
carlosperales95 7:e2b8461d4f05 37 //DAT - p20
mglmx 3:fe7010b693a0 38 DigitalOut Track(p20); //Digital output bit used to drive track power via H-bridge
carlosperales95 7:e2b8461d4f05 39
carlosperales95 7:e2b8461d4f05 40 //LCD SCREEN - p21, p22, p23, p24, p25, p26
carlosperales95 11:021210c59a95 41 TextLCD lcd(p22,p21,p23,p24,p25,p26); // RS, E, A4, A5, A6, A7 // ldc.cls() to clear and printf(String up to 16char)
carlosperales95 7:e2b8461d4f05 42
carlosperales95 7:e2b8461d4f05 43 ///p27
carlosperales95 7:e2b8461d4f05 44 ///p28
carlosperales95 7:e2b8461d4f05 45
carlosperales95 7:e2b8461d4f05 46 //LED1 - p29
mglmx 3:fe7010b693a0 47 DigitalOut redled(p29);
carlosperales95 7:e2b8461d4f05 48 //LED2 - p30
mglmx 3:fe7010b693a0 49 DigitalOut greenled(p30);
carlosperales95 7:e2b8461d4f05 50
mglmx 5:ce0f66ea12c5 51
carlosperales95 12:e914ca5cd44b 52
carlosperales95 11:021210c59a95 53 //**************** FUNCTIONS FOR DENVER TRAIN ****************//
carlosperales95 10:2088b1935a93 54
mglmx 5:ce0f66ea12c5 55 void interrupted(){
mglmx 5:ce0f66ea12c5 56
mglmx 5:ce0f66ea12c5 57 }
mglmx 1:0ab26889af9b 58
mglmx 1:0ab26889af9b 59 void DCC_send_command(unsigned int address, unsigned int inst, unsigned int repeat_count)
mglmx 1:0ab26889af9b 60 {
mglmx 1:0ab26889af9b 61 unsigned __int64 command = 0x0000000000000000; // __int64 is the 64-bit integer type
mglmx 1:0ab26889af9b 62 unsigned __int64 temp_command = 0x0000000000000000;
mglmx 1:0ab26889af9b 63 unsigned __int64 prefix = 0x3FFF; // 14 "1" bits needed at start
mglmx 1:0ab26889af9b 64 unsigned int error = 0x00; //error byte
mglmx 1:0ab26889af9b 65 //calculate error detection byte with xor
mglmx 1:0ab26889af9b 66 error = address ^ inst;
mglmx 1:0ab26889af9b 67 //combine packet bits in basic DCC format
mglmx 1:0ab26889af9b 68 command = (prefix<<28)|(address<<19)|(inst<<10)|((error)<<1)|0x01;
mglmx 1:0ab26889af9b 69 //printf("\n\r %llx \n\r",command);
mglmx 1:0ab26889af9b 70 int i=0;
mglmx 1:0ab26889af9b 71 //repeat DCC command lots of times
mglmx 1:0ab26889af9b 72 while(i < repeat_count) {
mglmx 1:0ab26889af9b 73 temp_command = command;
mglmx 1:0ab26889af9b 74 //loops through packet bits encoding and sending out digital pulses for a DCC command
mglmx 1:0ab26889af9b 75 for (int j=0; j<64; j++) {
mglmx 1:0ab26889af9b 76 if((temp_command&0x8000000000000000)==0) { //test packet bit
mglmx 1:0ab26889af9b 77 //send data for a "0" bit
mglmx 1:0ab26889af9b 78 Track=0;
mglmx 1:0ab26889af9b 79 wait_us(100);
mglmx 1:0ab26889af9b 80 Track=1;
mglmx 1:0ab26889af9b 81 wait_us(100);
mglmx 1:0ab26889af9b 82 //printf("0011");
mglmx 1:0ab26889af9b 83 } else {
mglmx 1:0ab26889af9b 84 //send data for a "1"bit
mglmx 1:0ab26889af9b 85 Track=0;
mglmx 1:0ab26889af9b 86 wait_us(58);
mglmx 1:0ab26889af9b 87 Track=1;
mglmx 1:0ab26889af9b 88 wait_us(58);
mglmx 1:0ab26889af9b 89 //printf("01");
mglmx 1:0ab26889af9b 90 }
mglmx 1:0ab26889af9b 91 // next bit in packet
mglmx 1:0ab26889af9b 92 temp_command = temp_command<<1;
mglmx 1:0ab26889af9b 93 }
mglmx 1:0ab26889af9b 94 i++;
mglmx 0:4d06a6a8e785 95 }
mglmx 0:4d06a6a8e785 96 }
carlosperales95 11:021210c59a95 97
carlosperales95 11:021210c59a95 98
carlosperales95 12:e914ca5cd44b 99
carlosperales95 11:021210c59a95 100 //**************** MAIN PROGRAM FOR DENVER TRAIN ****************//
carlosperales95 11:021210c59a95 101
mglmx 1:0ab26889af9b 102 int main()
mglmx 1:0ab26889af9b 103 {
mglmx 2:f580707c44fa 104 led1 = 1;
mglmx 2:f580707c44fa 105 wait(0.5);
mglmx 2:f580707c44fa 106 led1 = 0;
mglmx 2:f580707c44fa 107 wait(0.5);
mglmx 2:f580707c44fa 108 led1 = 1;
mglmx 1:0ab26889af9b 109 //typical out of box default engine DCC address is 3 (at least for Bachmann trains)
mglmx 1:0ab26889af9b 110 //Note: A DCC controller can reprogram the address whenever needed
mglmx 1:0ab26889af9b 111 unsigned int DCCaddress = 0x01;
mglmx 1:0ab26889af9b 112 //see http://www.nmra.org/standards/DCC/standards_rps/RP-921%202006%20Aug%2021.pdf
mglmx 1:0ab26889af9b 113 //01DCSSSS for speed, D is direction (fwd=1 and rev=0), C is speed(SSSSC) LSB
mglmx 1:0ab26889af9b 114 unsigned int DCCinst_forward = 0x68; //forward half speed
mglmx 1:0ab26889af9b 115 unsigned int DCCinst_reverse = 0x48; //reverse half speed
mglmx 4:50879dfb82d5 116 unsigned int DCCinst_stop = 0x50;
mglmx 1:0ab26889af9b 117 //100DDDDD for basic headlight functions
mglmx 1:0ab26889af9b 118 unsigned int DCC_func_lighton = 0x90; //F0 turns on headlight function
mglmx 1:0ab26889af9b 119 unsigned int DCC_func_dimlight = 0x91; //F0 + F1 dims headlight
mglmx 1:0ab26889af9b 120 //
mglmx 1:0ab26889af9b 121 //Basic DCC Demo Commands
mglmx 1:0ab26889af9b 122 DCC_send_command(DCCaddress,DCC_func_lighton,200); // turn light on full
mglmx 1:0ab26889af9b 123 DCC_send_command(DCCaddress,DCC_func_dimlight,200); //dim light
mglmx 1:0ab26889af9b 124 DCC_send_command(DCCaddress,DCC_func_lighton,200); //light full again
mglmx 2:f580707c44fa 125 led2 = 1;
mglmx 1:0ab26889af9b 126 while(1) {
mglmx 4:50879dfb82d5 127
mglmx 4:50879dfb82d5 128
mglmx 4:50879dfb82d5 129
mglmx 4:50879dfb82d5 130 if(d21 == 1 || d22 == 1 || d23 == 1){
mglmx 4:50879dfb82d5 131 lcd.cls();
mglmx 4:50879dfb82d5 132 lcd.printf("Choo Choo station");
mglmx 4:50879dfb82d5 133 DCC_send_command(DCCaddress,DCCinst_stop,400); // forward half speed train address 3
mglmx 4:50879dfb82d5 134
mglmx 4:50879dfb82d5 135 }else{
mglmx 4:50879dfb82d5 136 DCC_send_command(DCCaddress,DCCinst_forward,1); // forward half speed train address 3
mglmx 4:50879dfb82d5 137 }
mglmx 4:50879dfb82d5 138
mglmx 4:50879dfb82d5 139
mglmx 4:50879dfb82d5 140 /*
mglmx 3:fe7010b693a0 141 float f = pot.read();
mglmx 3:fe7010b693a0 142 float vin = f * 3.3;
mglmx 3:fe7010b693a0 143
mglmx 2:f580707c44fa 144 led3 = 1;
mglmx 3:fe7010b693a0 145 if(switch1 == 1){
mglmx 3:fe7010b693a0 146 lcd.cls();
mglmx 3:fe7010b693a0 147 lcd.printf("Going forward");
mglmx 3:fe7010b693a0 148 greenled = 0;
mglmx 3:fe7010b693a0 149 redled = 1;
mglmx 3:fe7010b693a0 150 DCC_send_command(DCCaddress,DCCinst_forward,400); // forward half speed train address 3
mglmx 3:fe7010b693a0 151 lcd.cls();
mglmx 3:fe7010b693a0 152
mglmx 3:fe7010b693a0 153 lcd.printf("vin: %.4f",vin);
mglmx 3:fe7010b693a0 154 wait(0.2);
mglmx 3:fe7010b693a0 155
mglmx 3:fe7010b693a0 156 }else{
mglmx 3:fe7010b693a0 157 lcd.cls();
mglmx 3:fe7010b693a0 158 lcd.printf("Going backwards");
mglmx 3:fe7010b693a0 159 greenled = 1;
mglmx 3:fe7010b693a0 160 redled = 0;
mglmx 3:fe7010b693a0 161 DCC_send_command(DCCaddress,DCCinst_reverse,400); // reverse half speed train address 3
mglmx 3:fe7010b693a0 162 lcd.cls();
mglmx 3:fe7010b693a0 163
mglmx 3:fe7010b693a0 164 lcd.printf("vin: %.4f",vin);
mglmx 3:fe7010b693a0 165 wait(0.2);
mglmx 3:fe7010b693a0 166
mglmx 3:fe7010b693a0 167 }
mglmx 4:50879dfb82d5 168 */
mglmx 1:0ab26889af9b 169 }
mglmx 3:fe7010b693a0 170 }