Luccas Eagles / TEST_EMBEDDED_LUCCAS

fork of what I have been writing

Dependencies:   Crypto

ES_CW2_Starter_STARFISH/main.cpp@6:5f4a954cb8bc, 2020-03-01 (annotated)

Committer:
kubitz
Date:
Sun Mar 01 12:45:22 2020 +0000
Revision:
6:5f4a954cb8bc
Parent:
5:de6430aee646
Child:
7:aef5b29d7a7c
added thread for printing crypto coins

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kubitz 5:de6430aee646 1
kubitz 0:19fd8c1944fb 2 #include "mbed.h"
kubitz 0:19fd8c1944fb 3 #include "SHA256.h"
kubitz 6:5f4a954cb8bc 4 #include "rtos.h"
kubitz 6:5f4a954cb8bc 5 typedef struct {
kubitz 6:5f4a954cb8bc 6 uint8_t hash[32]; /* hash of successful nonce */
kubitz 6:5f4a954cb8bc 7 } mail_t;
kubitz 0:19fd8c1944fb 8 Timer timer_nonce;
kubitz 6:5f4a954cb8bc 9 Mail<mail_t, 16> mail_box;
kubitz 6:5f4a954cb8bc 10 Thread thread_crypto;
kubitz 0:19fd8c1944fb 11
kubitz 3:8443825642d1 12
kubitz 0:19fd8c1944fb 13 uint8_t sequence[] = {0x45,0x6D,0x62,0x65,0x64,0x64,0x65,0x64,
kubitz 0:19fd8c1944fb 14 0x20,0x53,0x79,0x73,0x74,0x65,0x6D,0x73,
kubitz 0:19fd8c1944fb 15 0x20,0x61,0x72,0x65,0x20,0x66,0x75,0x6E,
kubitz 0:19fd8c1944fb 16 0x20,0x61,0x6E,0x64,0x20,0x64,0x6F,0x20,
kubitz 0:19fd8c1944fb 17 0x61,0x77,0x65,0x73,0x6F,0x6D,0x65,0x20,
kubitz 0:19fd8c1944fb 18 0x74,0x68,0x69,0x6E,0x67,0x73,0x21,0x20,
kubitz 0:19fd8c1944fb 19 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
kubitz 0:19fd8c1944fb 20 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
kubitz 0:19fd8c1944fb 21 uint64_t* key = (uint64_t*)&sequence[48];
kubitz 0:19fd8c1944fb 22 uint64_t* nonce = (uint64_t*)&sequence[56];
kubitz 0:19fd8c1944fb 23 uint32_t successful_nonce = 0;
kubitz 0:19fd8c1944fb 24 uint32_t last_nonce_number = 0;
kubitz 5:de6430aee646 25
kubitz 0:19fd8c1944fb 26 uint8_t hash[32];
kubitz 0:19fd8c1944fb 27 uint32_t previous_time;
kubitz 0:19fd8c1944fb 28 //Photointerrupter input pins
kubitz 0:19fd8c1944fb 29 #define I1pin D3
kubitz 0:19fd8c1944fb 30 #define I2pin D6
kubitz 0:19fd8c1944fb 31 #define I3pin D5
kubitz 0:19fd8c1944fb 32
kubitz 0:19fd8c1944fb 33 //Incremental encoder input pins
kubitz 0:19fd8c1944fb 34 #define CHApin D12
kubitz 0:19fd8c1944fb 35 #define CHBpin D11
kubitz 0:19fd8c1944fb 36
kubitz 0:19fd8c1944fb 37 //Motor Drive output pins //Mask in output byte
kubitz 0:19fd8c1944fb 38 #define L1Lpin D1 //0x01
kubitz 0:19fd8c1944fb 39 #define L1Hpin A3 //0x02
kubitz 0:19fd8c1944fb 40 #define L2Lpin D0 //0x04
kubitz 0:19fd8c1944fb 41 #define L2Hpin A6 //0x08
kubitz 0:19fd8c1944fb 42 #define L3Lpin D10 //0x10
kubitz 0:19fd8c1944fb 43 #define L3Hpin D2 //0x20
kubitz 0:19fd8c1944fb 44
kubitz 0:19fd8c1944fb 45 #define PWMpin D9
kubitz 0:19fd8c1944fb 46
kubitz 0:19fd8c1944fb 47 //Motor current sense
kubitz 0:19fd8c1944fb 48 #define MCSPpin A1
kubitz 0:19fd8c1944fb 49 #define MCSNpin A0
kubitz 0:19fd8c1944fb 50
kubitz 0:19fd8c1944fb 51 //Test outputs
kubitz 0:19fd8c1944fb 52 #define TP0pin D4
kubitz 0:19fd8c1944fb 53 #define TP1pin D13
kubitz 0:19fd8c1944fb 54 #define TP2pin A2
kubitz 0:19fd8c1944fb 55
kubitz 0:19fd8c1944fb 56 //Mapping from sequential drive states to motor phase outputs
kubitz 0:19fd8c1944fb 57 /*
kubitz 0:19fd8c1944fb 58 State L1 L2 L3
kubitz 0:19fd8c1944fb 59 0 H - L
kubitz 0:19fd8c1944fb 60 1 - H L
kubitz 0:19fd8c1944fb 61 2 L H -
kubitz 0:19fd8c1944fb 62 3 L - H
kubitz 0:19fd8c1944fb 63 4 - L H
kubitz 0:19fd8c1944fb 64 5 H L -
kubitz 0:19fd8c1944fb 65 6 - - -
kubitz 0:19fd8c1944fb 66 7 - - -
kubitz 0:19fd8c1944fb 67 */
kubitz 0:19fd8c1944fb 68 //Drive state to output table
kubitz 0:19fd8c1944fb 69 const int8_t driveTable[] = {0x12,0x18,0x09,0x21,0x24,0x06,0x00,0x00};
kubitz 0:19fd8c1944fb 70
kubitz 0:19fd8c1944fb 71 //Mapping from interrupter inputs to sequential rotor states. 0x00 and 0x07 are not valid
kubitz 0:19fd8c1944fb 72 const int8_t stateMap[] = {0x07,0x05,0x03,0x04,0x01,0x00,0x02,0x07};
kubitz 0:19fd8c1944fb 73 //const int8_t stateMap[] = {0x07,0x01,0x03,0x02,0x05,0x00,0x04,0x07}; //Alternative if phase order of input or drive is reversed
kubitz 0:19fd8c1944fb 74
kubitz 0:19fd8c1944fb 75 //Phase lead to make motor spin
kubitz 0:19fd8c1944fb 76 const int8_t lead = 2; //2 for forwards, -2 for backwards
kubitz 0:19fd8c1944fb 77
kubitz 0:19fd8c1944fb 78 //Status LED
kubitz 0:19fd8c1944fb 79 DigitalOut led1(LED1);
kubitz 0:19fd8c1944fb 80
kubitz 0:19fd8c1944fb 81 //Photointerrupter inputs
kubitz 0:19fd8c1944fb 82 InterruptIn I1(I1pin);
kubitz 0:19fd8c1944fb 83 InterruptIn I2(I2pin);
kubitz 0:19fd8c1944fb 84 InterruptIn I3(I3pin);
kubitz 0:19fd8c1944fb 85
kubitz 0:19fd8c1944fb 86 //Motor Drive outputs
kubitz 0:19fd8c1944fb 87 DigitalOut L1L(L1Lpin);
kubitz 0:19fd8c1944fb 88 DigitalOut L1H(L1Hpin);
kubitz 0:19fd8c1944fb 89 DigitalOut L2L(L2Lpin);
kubitz 0:19fd8c1944fb 90 DigitalOut L2H(L2Hpin);
kubitz 0:19fd8c1944fb 91 DigitalOut L3L(L3Lpin);
kubitz 0:19fd8c1944fb 92 DigitalOut L3H(L3Hpin);
kubitz 0:19fd8c1944fb 93
kubitz 0:19fd8c1944fb 94 DigitalOut TP1(TP1pin);
kubitz 0:19fd8c1944fb 95 PwmOut MotorPWM(PWMpin);
kubitz 0:19fd8c1944fb 96
kubitz 0:19fd8c1944fb 97 int8_t orState = 0; //Rotot offset at motor state 0
kubitz 0:19fd8c1944fb 98 int8_t intState = 0;
kubitz 0:19fd8c1944fb 99 int8_t intStateOld = 0;
kubitz 0:19fd8c1944fb 100
kubitz 0:19fd8c1944fb 101
kubitz 0:19fd8c1944fb 102 //Set a given drive state
kubitz 0:19fd8c1944fb 103 void motorOut(int8_t driveState){
kubitz 0:19fd8c1944fb 104
kubitz 0:19fd8c1944fb 105 //Lookup the output byte from the drive state.
kubitz 0:19fd8c1944fb 106 int8_t driveOut = driveTable[driveState & 0x07];
kubitz 0:19fd8c1944fb 107
kubitz 0:19fd8c1944fb 108 //Turn off first
kubitz 0:19fd8c1944fb 109 if (~driveOut & 0x01) L1L = 0;
kubitz 0:19fd8c1944fb 110 if (~driveOut & 0x02) L1H = 1;
kubitz 0:19fd8c1944fb 111 if (~driveOut & 0x04) L2L = 0;
kubitz 0:19fd8c1944fb 112 if (~driveOut & 0x08) L2H = 1;
kubitz 0:19fd8c1944fb 113 if (~driveOut & 0x10) L3L = 0;
kubitz 0:19fd8c1944fb 114 if (~driveOut & 0x20) L3H = 1;
kubitz 0:19fd8c1944fb 115
kubitz 0:19fd8c1944fb 116 //Then turn on
kubitz 0:19fd8c1944fb 117 if (driveOut & 0x01) L1L = 1;
kubitz 0:19fd8c1944fb 118 if (driveOut & 0x02) L1H = 0;
kubitz 0:19fd8c1944fb 119 if (driveOut & 0x04) L2L = 1;
kubitz 0:19fd8c1944fb 120 if (driveOut & 0x08) L2H = 0;
kubitz 0:19fd8c1944fb 121 if (driveOut & 0x10) L3L = 1;
kubitz 0:19fd8c1944fb 122 if (driveOut & 0x20) L3H = 0;
kubitz 0:19fd8c1944fb 123 }
kubitz 0:19fd8c1944fb 124
kubitz 0:19fd8c1944fb 125 //Convert photointerrupter inputs to a rotor state
kubitz 0:19fd8c1944fb 126 inline int8_t readRotorState(){
kubitz 0:19fd8c1944fb 127 return stateMap[I1 + 2*I2 + 4*I3];
kubitz 0:19fd8c1944fb 128 }
kubitz 0:19fd8c1944fb 129
kubitz 0:19fd8c1944fb 130 //Basic synchronisation routine
kubitz 0:19fd8c1944fb 131 int8_t motorHome() {
kubitz 0:19fd8c1944fb 132 //Put the motor in drive state 0 and wait for it to stabilise
kubitz 0:19fd8c1944fb 133 motorOut(0);
kubitz 0:19fd8c1944fb 134 wait(2.0);
kubitz 0:19fd8c1944fb 135
kubitz 0:19fd8c1944fb 136 //Get the rotor state
kubitz 0:19fd8c1944fb 137 return readRotorState();
kubitz 0:19fd8c1944fb 138 }
kubitz 0:19fd8c1944fb 139
kubitz 0:19fd8c1944fb 140 void move() {
kubitz 0:19fd8c1944fb 141 intState = readRotorState();
kubitz 0:19fd8c1944fb 142 motorOut((intState-orState+lead+6)%6); //+6 to make sure the remainder is positive
kubitz 0:19fd8c1944fb 143 intStateOld = intState;
kubitz 0:19fd8c1944fb 144 }
kubitz 0:19fd8c1944fb 145
kubitz 6:5f4a954cb8bc 146 // Thread to print successful Hashes
kubitz 6:5f4a954cb8bc 147 void print_crypto_thread() {
kubitz 6:5f4a954cb8bc 148 while (true) {
kubitz 6:5f4a954cb8bc 149 osEvent evt = mail_box.get();
kubitz 6:5f4a954cb8bc 150 if (evt.status == osEventMail) {
kubitz 6:5f4a954cb8bc 151 mail_t *mail = (mail_t*)evt.value.p;
kubitz 6:5f4a954cb8bc 152 for (int i = 0; i < 32; i++)
kubitz 6:5f4a954cb8bc 153 printf("%d", mail->hash[i]);
kubitz 6:5f4a954cb8bc 154 printf("/n");
kubitz 6:5f4a954cb8bc 155 mail_box.free(mail);
kubitz 6:5f4a954cb8bc 156 }
kubitz 6:5f4a954cb8bc 157 }
kubitz 6:5f4a954cb8bc 158 }
kubitz 6:5f4a954cb8bc 159
kubitz 6:5f4a954cb8bc 160 // Put message in Mail box
kubitz 6:5f4a954cb8bc 161 void putMessage(uint8_t *hash[32]){
kubitz 6:5f4a954cb8bc 162 mail_t *mail = mail_box.alloc();
kubitz 6:5f4a954cb8bc 163 strcpy(*hash, mail->hash);
kubitz 6:5f4a954cb8bc 164 mail_box.put(mail);
kubitz 6:5f4a954cb8bc 165 }
kubitz 6:5f4a954cb8bc 166
kubitz 0:19fd8c1944fb 167 //Main
kubitz 0:19fd8c1944fb 168 int main() {
kubitz 0:19fd8c1944fb 169
kubitz 0:19fd8c1944fb 170 const int32_t PWM_PRD = 2500;
kubitz 0:19fd8c1944fb 171 MotorPWM.period_us(PWM_PRD);
kubitz 0:19fd8c1944fb 172 MotorPWM.pulsewidth_us(PWM_PRD);
kubitz 0:19fd8c1944fb 173
kubitz 0:19fd8c1944fb 174 //Initialise the serial port
kubitz 0:19fd8c1944fb 175 Serial pc(SERIAL_TX, SERIAL_RX);
kubitz 0:19fd8c1944fb 176 pc.printf("Hello\n\r");
kubitz 0:19fd8c1944fb 177
kubitz 0:19fd8c1944fb 178 //Run the motor synchronisation
kubitz 0:19fd8c1944fb 179 orState = motorHome();
kubitz 0:19fd8c1944fb 180 pc.printf("Rotor origin: %x\n\r",orState);
kubitz 0:19fd8c1944fb 181
kubitz 0:19fd8c1944fb 182 I1.rise(&move);
kubitz 0:19fd8c1944fb 183 I1.fall(&move);
kubitz 0:19fd8c1944fb 184 I2.rise(&move);
kubitz 0:19fd8c1944fb 185 I2.fall(&move);
kubitz 0:19fd8c1944fb 186 I3.rise(&move);
kubitz 0:19fd8c1944fb 187 I3.fall(&move);
kubitz 0:19fd8c1944fb 188 timer_nonce.start();
kubitz 5:de6430aee646 189 pc.printf("time is %d\n\r", timer_nonce.read_ms());
kubitz 5:de6430aee646 190 pc.printf("time is %d\n\r", (timer_nonce.read_ms()-previous_time));
kubitz 5:de6430aee646 191 uint8_t hash[32];
kubitz 6:5f4a954cb8bc 192 thread_crypto.start(print_crypto_thread);
kubitz 5:de6430aee646 193
kubitz 5:de6430aee646 194 while (1){
kubitz 5:de6430aee646 195
kubitz 5:de6430aee646 196 *nonce = *nonce + 1;
kubitz 5:de6430aee646 197
kubitz 0:19fd8c1944fb 198 SHA256::computeHash(hash, (uint8_t*)sequence, 64);
kubitz 5:de6430aee646 199
kubitz 0:19fd8c1944fb 200 if ((hash[0]==0)&&(hash[1]==0)){
kubitz 0:19fd8c1944fb 201 last_nonce_number = successful_nonce;
kubitz 0:19fd8c1944fb 202 successful_nonce++;
kubitz 6:5f4a954cb8bc 203 putMessage(hash);
kubitz 0:19fd8c1944fb 204 }
kubitz 5:de6430aee646 205
kubitz 5:de6430aee646 206 if ((timer_nonce.read_ms()-previous_time) > 1000){
kubitz 5:de6430aee646 207 pc.printf("Computation Rate: %lu computation /sec\n\r" , (*nonce-last_nonce_number));
kubitz 0:19fd8c1944fb 208 last_nonce_number = *nonce;
kubitz 5:de6430aee646 209 previous_time = timer_nonce.read_ms();
kubitz 5:de6430aee646 210
kubitz 0:19fd8c1944fb 211 }
kubitz 0:19fd8c1944fb 212
kubitz 0:19fd8c1944fb 213 }
kubitz 0:19fd8c1944fb 214
kubitz 0:19fd8c1944fb 215 return 0;
kubitz 0:19fd8c1944fb 216
kubitz 0:19fd8c1944fb 217 }
kubitz 0:19fd8c1944fb 218