Luccas Eagles / TEST_EMBEDDED_LUCCAS

fork of what I have been writing

Dependencies:   Crypto

ES_CW2_Starter_STARFISH/main.cpp@1:e9be8b2c8c69, 2020-02-28 (annotated)

Committer:
kubitz
Date:
Fri Feb 28 17:40:23 2020 +0000
Revision:
1:e9be8b2c8c69
Parent:
0:19fd8c1944fb
Child:
2:60ec222456b6
added crypto thread

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kubitz 0:19fd8c1944fb 1 #include "mbed.h"
kubitz 0:19fd8c1944fb 2 #include "SHA256.h"
kubitz 0:19fd8c1944fb 3
kubitz 0:19fd8c1944fb 4 Timer timer_nonce;
kubitz 0:19fd8c1944fb 5
kubitz 1:e9be8b2c8c69 6 typedef struct {
kubitz 1:e9be8b2c8c69 7 uint32_t counter; /* A counter value */
kubitz 1:e9be8b2c8c69 8 } mail_t;
kubitz 1:e9be8b2c8c69 9
kubitz 1:e9be8b2c8c69 10 Mail<mail_t, 16> mail_box;
kubitz 0:19fd8c1944fb 11
kubitz 0:19fd8c1944fb 12 uint8_t sequence[] = {0x45,0x6D,0x62,0x65,0x64,0x64,0x65,0x64,
kubitz 0:19fd8c1944fb 13 0x20,0x53,0x79,0x73,0x74,0x65,0x6D,0x73,
kubitz 0:19fd8c1944fb 14 0x20,0x61,0x72,0x65,0x20,0x66,0x75,0x6E,
kubitz 0:19fd8c1944fb 15 0x20,0x61,0x6E,0x64,0x20,0x64,0x6F,0x20,
kubitz 0:19fd8c1944fb 16 0x61,0x77,0x65,0x73,0x6F,0x6D,0x65,0x20,
kubitz 0:19fd8c1944fb 17 0x74,0x68,0x69,0x6E,0x67,0x73,0x21,0x20,
kubitz 0:19fd8c1944fb 18 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
kubitz 0:19fd8c1944fb 19 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
kubitz 1:e9be8b2c8c69 20
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 0:19fd8c1944fb 25
kubitz 0:19fd8c1944fb 26 uint8_t hash[32];
kubitz 0:19fd8c1944fb 27 uint32_t previous_time;
kubitz 1:e9be8b2c8c69 28
kubitz 1:e9be8b2c8c69 29
kubitz 0:19fd8c1944fb 30 //Photointerrupter input pins
kubitz 0:19fd8c1944fb 31 #define I1pin D3
kubitz 0:19fd8c1944fb 32 #define I2pin D6
kubitz 0:19fd8c1944fb 33 #define I3pin D5
kubitz 0:19fd8c1944fb 34
kubitz 0:19fd8c1944fb 35 //Incremental encoder input pins
kubitz 0:19fd8c1944fb 36 #define CHApin D12
kubitz 0:19fd8c1944fb 37 #define CHBpin D11
kubitz 0:19fd8c1944fb 38
kubitz 0:19fd8c1944fb 39 //Motor Drive output pins //Mask in output byte
kubitz 0:19fd8c1944fb 40 #define L1Lpin D1 //0x01
kubitz 0:19fd8c1944fb 41 #define L1Hpin A3 //0x02
kubitz 0:19fd8c1944fb 42 #define L2Lpin D0 //0x04
kubitz 0:19fd8c1944fb 43 #define L2Hpin A6 //0x08
kubitz 0:19fd8c1944fb 44 #define L3Lpin D10 //0x10
kubitz 0:19fd8c1944fb 45 #define L3Hpin D2 //0x20
kubitz 0:19fd8c1944fb 46
kubitz 0:19fd8c1944fb 47 #define PWMpin D9
kubitz 0:19fd8c1944fb 48
kubitz 0:19fd8c1944fb 49 //Motor current sense
kubitz 0:19fd8c1944fb 50 #define MCSPpin A1
kubitz 0:19fd8c1944fb 51 #define MCSNpin A0
kubitz 0:19fd8c1944fb 52
kubitz 0:19fd8c1944fb 53 //Test outputs
kubitz 0:19fd8c1944fb 54 #define TP0pin D4
kubitz 0:19fd8c1944fb 55 #define TP1pin D13
kubitz 0:19fd8c1944fb 56 #define TP2pin A2
kubitz 0:19fd8c1944fb 57
kubitz 0:19fd8c1944fb 58 //Mapping from sequential drive states to motor phase outputs
kubitz 0:19fd8c1944fb 59 /*
kubitz 0:19fd8c1944fb 60 State L1 L2 L3
kubitz 0:19fd8c1944fb 61 0 H - L
kubitz 0:19fd8c1944fb 62 1 - H L
kubitz 0:19fd8c1944fb 63 2 L H -
kubitz 0:19fd8c1944fb 64 3 L - H
kubitz 0:19fd8c1944fb 65 4 - L H
kubitz 0:19fd8c1944fb 66 5 H L -
kubitz 0:19fd8c1944fb 67 6 - - -
kubitz 0:19fd8c1944fb 68 7 - - -
kubitz 0:19fd8c1944fb 69 */
kubitz 0:19fd8c1944fb 70 //Drive state to output table
kubitz 0:19fd8c1944fb 71 const int8_t driveTable[] = {0x12,0x18,0x09,0x21,0x24,0x06,0x00,0x00};
kubitz 0:19fd8c1944fb 72
kubitz 0:19fd8c1944fb 73 //Mapping from interrupter inputs to sequential rotor states. 0x00 and 0x07 are not valid
kubitz 0:19fd8c1944fb 74 const int8_t stateMap[] = {0x07,0x05,0x03,0x04,0x01,0x00,0x02,0x07};
kubitz 0:19fd8c1944fb 75 //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 76
kubitz 0:19fd8c1944fb 77 //Phase lead to make motor spin
kubitz 0:19fd8c1944fb 78 const int8_t lead = 2; //2 for forwards, -2 for backwards
kubitz 0:19fd8c1944fb 79
kubitz 0:19fd8c1944fb 80 //Status LED
kubitz 0:19fd8c1944fb 81 DigitalOut led1(LED1);
kubitz 0:19fd8c1944fb 82
kubitz 0:19fd8c1944fb 83 //Photointerrupter inputs
kubitz 0:19fd8c1944fb 84 InterruptIn I1(I1pin);
kubitz 0:19fd8c1944fb 85 InterruptIn I2(I2pin);
kubitz 0:19fd8c1944fb 86 InterruptIn I3(I3pin);
kubitz 0:19fd8c1944fb 87
kubitz 0:19fd8c1944fb 88 //Motor Drive outputs
kubitz 0:19fd8c1944fb 89 DigitalOut L1L(L1Lpin);
kubitz 0:19fd8c1944fb 90 DigitalOut L1H(L1Hpin);
kubitz 0:19fd8c1944fb 91 DigitalOut L2L(L2Lpin);
kubitz 0:19fd8c1944fb 92 DigitalOut L2H(L2Hpin);
kubitz 0:19fd8c1944fb 93 DigitalOut L3L(L3Lpin);
kubitz 0:19fd8c1944fb 94 DigitalOut L3H(L3Hpin);
kubitz 0:19fd8c1944fb 95
kubitz 0:19fd8c1944fb 96 DigitalOut TP1(TP1pin);
kubitz 0:19fd8c1944fb 97 PwmOut MotorPWM(PWMpin);
kubitz 0:19fd8c1944fb 98
kubitz 0:19fd8c1944fb 99 int8_t orState = 0; //Rotot offset at motor state 0
kubitz 0:19fd8c1944fb 100 int8_t intState = 0;
kubitz 0:19fd8c1944fb 101 int8_t intStateOld = 0;
kubitz 0:19fd8c1944fb 102
kubitz 0:19fd8c1944fb 103
kubitz 0:19fd8c1944fb 104 //Set a given drive state
kubitz 0:19fd8c1944fb 105 void motorOut(int8_t driveState){
kubitz 0:19fd8c1944fb 106
kubitz 0:19fd8c1944fb 107 //Lookup the output byte from the drive state.
kubitz 0:19fd8c1944fb 108 int8_t driveOut = driveTable[driveState & 0x07];
kubitz 0:19fd8c1944fb 109
kubitz 0:19fd8c1944fb 110 //Turn off first
kubitz 0:19fd8c1944fb 111 if (~driveOut & 0x01) L1L = 0;
kubitz 0:19fd8c1944fb 112 if (~driveOut & 0x02) L1H = 1;
kubitz 0:19fd8c1944fb 113 if (~driveOut & 0x04) L2L = 0;
kubitz 0:19fd8c1944fb 114 if (~driveOut & 0x08) L2H = 1;
kubitz 0:19fd8c1944fb 115 if (~driveOut & 0x10) L3L = 0;
kubitz 0:19fd8c1944fb 116 if (~driveOut & 0x20) L3H = 1;
kubitz 0:19fd8c1944fb 117
kubitz 0:19fd8c1944fb 118 //Then turn on
kubitz 0:19fd8c1944fb 119 if (driveOut & 0x01) L1L = 1;
kubitz 0:19fd8c1944fb 120 if (driveOut & 0x02) L1H = 0;
kubitz 0:19fd8c1944fb 121 if (driveOut & 0x04) L2L = 1;
kubitz 0:19fd8c1944fb 122 if (driveOut & 0x08) L2H = 0;
kubitz 0:19fd8c1944fb 123 if (driveOut & 0x10) L3L = 1;
kubitz 0:19fd8c1944fb 124 if (driveOut & 0x20) L3H = 0;
kubitz 0:19fd8c1944fb 125 }
kubitz 0:19fd8c1944fb 126
kubitz 0:19fd8c1944fb 127 //Convert photointerrupter inputs to a rotor state
kubitz 0:19fd8c1944fb 128 inline int8_t readRotorState(){
kubitz 0:19fd8c1944fb 129 return stateMap[I1 + 2*I2 + 4*I3];
kubitz 0:19fd8c1944fb 130 }
kubitz 0:19fd8c1944fb 131
kubitz 0:19fd8c1944fb 132 //Basic synchronisation routine
kubitz 0:19fd8c1944fb 133 int8_t motorHome() {
kubitz 0:19fd8c1944fb 134 //Put the motor in drive state 0 and wait for it to stabilise
kubitz 0:19fd8c1944fb 135 motorOut(0);
kubitz 0:19fd8c1944fb 136 wait(2.0);
kubitz 0:19fd8c1944fb 137
kubitz 0:19fd8c1944fb 138 //Get the rotor state
kubitz 0:19fd8c1944fb 139 return readRotorState();
kubitz 0:19fd8c1944fb 140 }
kubitz 0:19fd8c1944fb 141
kubitz 0:19fd8c1944fb 142 void move() {
kubitz 0:19fd8c1944fb 143 intState = readRotorState();
kubitz 0:19fd8c1944fb 144 motorOut((intState-orState+lead+6)%6); //+6 to make sure the remainder is positive
kubitz 0:19fd8c1944fb 145 intStateOld = intState;
kubitz 0:19fd8c1944fb 146 }
kubitz 0:19fd8c1944fb 147
kubitz 1:e9be8b2c8c69 148 void print_crypto_thread() {
kubitz 1:e9be8b2c8c69 149 while (true) {
kubitz 1:e9be8b2c8c69 150 osEvent evt = mail_box.get();
kubitz 1:e9be8b2c8c69 151 if (evt.status == osEventMail) {
kubitz 1:e9be8b2c8c69 152 mail_t *mail = (mail_t*)evt.value.p;
kubitz 1:e9be8b2c8c69 153 printf("Number of cycles: %u\n\r", mail->counter);
kubitz 1:e9be8b2c8c69 154 mail_box.free(mail);
kubitz 1:e9be8b2c8c69 155 }
kubitz 1:e9be8b2c8c69 156 }
kubitz 0:19fd8c1944fb 157
kubitz 0:19fd8c1944fb 158 //Main
kubitz 0:19fd8c1944fb 159 int main() {
kubitz 0:19fd8c1944fb 160
kubitz 0:19fd8c1944fb 161 const int32_t PWM_PRD = 2500;
kubitz 0:19fd8c1944fb 162 MotorPWM.period_us(PWM_PRD);
kubitz 0:19fd8c1944fb 163 MotorPWM.pulsewidth_us(PWM_PRD);
kubitz 0:19fd8c1944fb 164
kubitz 0:19fd8c1944fb 165 //Initialise the serial port
kubitz 0:19fd8c1944fb 166 Serial pc(SERIAL_TX, SERIAL_RX);
kubitz 0:19fd8c1944fb 167 pc.printf("Hello\n\r");
kubitz 0:19fd8c1944fb 168
kubitz 0:19fd8c1944fb 169 //Run the motor synchronisation
kubitz 0:19fd8c1944fb 170 orState = motorHome();
kubitz 0:19fd8c1944fb 171 pc.printf("Rotor origin: %x\n\r",orState);
kubitz 0:19fd8c1944fb 172
kubitz 0:19fd8c1944fb 173 I1.rise(&move);
kubitz 0:19fd8c1944fb 174 I1.fall(&move);
kubitz 0:19fd8c1944fb 175 I2.rise(&move);
kubitz 0:19fd8c1944fb 176 I2.fall(&move);
kubitz 0:19fd8c1944fb 177 I3.rise(&move);
kubitz 0:19fd8c1944fb 178 I3.fall(&move);
kubitz 0:19fd8c1944fb 179 timer_nonce.start();
kubitz 0:19fd8c1944fb 180 previous_time = timer_nonce.read();
kubitz 0:19fd8c1944fb 181
kubitz 0:19fd8c1944fb 182 while(1==1){
kubitz 0:19fd8c1944fb 183 uint8_t hash[32];
kubitz 0:19fd8c1944fb 184
kubitz 0:19fd8c1944fb 185 *nonce ++;
kubitz 0:19fd8c1944fb 186 SHA256::computeHash(hash, (uint8_t*)sequence, 64);
kubitz 0:19fd8c1944fb 187 mail_box.put(mail);
kubitz 0:19fd8c1944fb 188
kubitz 0:19fd8c1944fb 189 if ((hash[0]==0)&&(hash[1]==0)){
kubitz 0:19fd8c1944fb 190 last_nonce_number = successful_nonce;
kubitz 0:19fd8c1944fb 191 successful_nonce++;
kubitz 0:19fd8c1944fb 192 printf("Successful Nonce -- hash: ");
kubitz 0:19fd8c1944fb 193 for(int i = 0; i < 32; ++i)
kubitz 0:19fd8c1944fb 194 printf("\n");
kubitz 0:19fd8c1944fb 195 }
kubitz 0:19fd8c1944fb 196
kubitz 0:19fd8c1944fb 197 if ((timer_nonce.read()-previous_time) > 1000){
kubitz 0:19fd8c1944fb 198 printf("Computation Rate: %d computation /sec", (*nonce-last_nonce_number));
kubitz 0:19fd8c1944fb 199 last_nonce_number = *nonce;
kubitz 0:19fd8c1944fb 200 }
kubitz 0:19fd8c1944fb 201
kubitz 0:19fd8c1944fb 202 }
kubitz 0:19fd8c1944fb 203
kubitz 0:19fd8c1944fb 204 return 0;
kubitz 0:19fd8c1944fb 205
kubitz 0:19fd8c1944fb 206 }
kubitz 0:19fd8c1944fb 207