Luccas Eagles
fork of what I have been writing
Revision 0:19fd8c1944fb, committed 2020-02-28
- Comitter:
- kubitz
- Date:
- Fri Feb 28 17:36:48 2020 +0000
- Child:
- 1:e9be8b2c8c69
- Commit message:
- asdf
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ES_CW2_Starter_STARFISH/Crypto.lib Fri Feb 28 17:36:48 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/feb11/code/Crypto/#f04410cef037
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ES_CW2_Starter_STARFISH/main.cpp Fri Feb 28 17:36:48 2020 +0000
@@ -0,0 +1,196 @@
+#include "mbed.h"
+#include "SHA256.h"
+
+Timer timer_nonce;
+Mail<string, 16> mail_box;
+
+
+uint8_t sequence[] = {0x45,0x6D,0x62,0x65,0x64,0x64,0x65,0x64,
+0x20,0x53,0x79,0x73,0x74,0x65,0x6D,0x73,
+0x20,0x61,0x72,0x65,0x20,0x66,0x75,0x6E,
+0x20,0x61,0x6E,0x64,0x20,0x64,0x6F,0x20,
+0x61,0x77,0x65,0x73,0x6F,0x6D,0x65,0x20,
+0x74,0x68,0x69,0x6E,0x67,0x73,0x21,0x20,
+0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
+0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
+uint64_t* key = (uint64_t*)&sequence[48];
+uint64_t* nonce = (uint64_t*)&sequence[56];
+uint32_t successful_nonce = 0;
+uint32_t last_nonce_number = 0;
+
+uint8_t hash[32];
+uint32_t previous_time;
+//Photointerrupter input pins
+#define I1pin D3
+#define I2pin D6
+#define I3pin D5
+
+//Incremental encoder input pins
+#define CHApin D12
+#define CHBpin D11
+
+//Motor Drive output pins //Mask in output byte
+#define L1Lpin D1 //0x01
+#define L1Hpin A3 //0x02
+#define L2Lpin D0 //0x04
+#define L2Hpin A6 //0x08
+#define L3Lpin D10 //0x10
+#define L3Hpin D2 //0x20
+
+#define PWMpin D9
+
+//Motor current sense
+#define MCSPpin A1
+#define MCSNpin A0
+
+//Test outputs
+#define TP0pin D4
+#define TP1pin D13
+#define TP2pin A2
+
+//Mapping from sequential drive states to motor phase outputs
+/*
+State L1 L2 L3
+0 H - L
+1 - H L
+2 L H -
+3 L - H
+4 - L H
+5 H L -
+6 - - -
+7 - - -
+*/
+//Drive state to output table
+const int8_t driveTable[] = {0x12,0x18,0x09,0x21,0x24,0x06,0x00,0x00};
+
+//Mapping from interrupter inputs to sequential rotor states. 0x00 and 0x07 are not valid
+const int8_t stateMap[] = {0x07,0x05,0x03,0x04,0x01,0x00,0x02,0x07};
+//const int8_t stateMap[] = {0x07,0x01,0x03,0x02,0x05,0x00,0x04,0x07}; //Alternative if phase order of input or drive is reversed
+
+//Phase lead to make motor spin
+const int8_t lead = 2; //2 for forwards, -2 for backwards
+
+//Status LED
+DigitalOut led1(LED1);
+
+//Photointerrupter inputs
+InterruptIn I1(I1pin);
+InterruptIn I2(I2pin);
+InterruptIn I3(I3pin);
+
+//Motor Drive outputs
+DigitalOut L1L(L1Lpin);
+DigitalOut L1H(L1Hpin);
+DigitalOut L2L(L2Lpin);
+DigitalOut L2H(L2Hpin);
+DigitalOut L3L(L3Lpin);
+DigitalOut L3H(L3Hpin);
+
+DigitalOut TP1(TP1pin);
+PwmOut MotorPWM(PWMpin);
+
+int8_t orState = 0; //Rotot offset at motor state 0
+int8_t intState = 0;
+int8_t intStateOld = 0;
+
+
+//Set a given drive state
+void motorOut(int8_t driveState){
+
+ //Lookup the output byte from the drive state.
+ int8_t driveOut = driveTable[driveState & 0x07];
+
+ //Turn off first
+ if (~driveOut & 0x01) L1L = 0;
+ if (~driveOut & 0x02) L1H = 1;
+ if (~driveOut & 0x04) L2L = 0;
+ if (~driveOut & 0x08) L2H = 1;
+ if (~driveOut & 0x10) L3L = 0;
+ if (~driveOut & 0x20) L3H = 1;
+
+ //Then turn on
+ if (driveOut & 0x01) L1L = 1;
+ if (driveOut & 0x02) L1H = 0;
+ if (driveOut & 0x04) L2L = 1;
+ if (driveOut & 0x08) L2H = 0;
+ if (driveOut & 0x10) L3L = 1;
+ if (driveOut & 0x20) L3H = 0;
+ }
+
+ //Convert photointerrupter inputs to a rotor state
+inline int8_t readRotorState(){
+ return stateMap[I1 + 2*I2 + 4*I3];
+ }
+
+//Basic synchronisation routine
+int8_t motorHome() {
+ //Put the motor in drive state 0 and wait for it to stabilise
+ motorOut(0);
+ wait(2.0);
+
+ //Get the rotor state
+ return readRotorState();
+}
+
+void move() {
+ intState = readRotorState();
+ motorOut((intState-orState+lead+6)%6); //+6 to make sure the remainder is positive
+ intStateOld = intState;
+}
+
+void print_mails(){
+
+
+
+ }
+
+//Main
+int main() {
+
+ const int32_t PWM_PRD = 2500;
+ MotorPWM.period_us(PWM_PRD);
+ MotorPWM.pulsewidth_us(PWM_PRD);
+
+ //Initialise the serial port
+ Serial pc(SERIAL_TX, SERIAL_RX);
+ pc.printf("Hello\n\r");
+
+ //Run the motor synchronisation
+ orState = motorHome();
+ pc.printf("Rotor origin: %x\n\r",orState);
+
+ I1.rise(&move);
+ I1.fall(&move);
+ I2.rise(&move);
+ I2.fall(&move);
+ I3.rise(&move);
+ I3.fall(&move);
+ timer_nonce.start();
+ previous_time = timer_nonce.read();
+
+ while(1==1){
+ uint8_t hash[32];
+
+ *nonce ++;
+ SHA256::computeHash(hash, (uint8_t*)sequence, 64);
+ mail_box.put(mail);
+
+ if ((hash[0]==0)&&(hash[1]==0)){
+ last_nonce_number = successful_nonce;
+ successful_nonce++;
+ printf("Successful Nonce -- hash: ");
+ for(int i = 0; i < 32; ++i)
+ printf("\n");
+ }
+
+ if ((timer_nonce.read()-previous_time) > 1000){
+ printf("Computation Rate: %d computation /sec", (*nonce-last_nonce_number));
+ last_nonce_number = *nonce;
+ }
+
+ }
+
+ return 0;
+
+ }
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ES_CW2_Starter_STARFISH/mbed-os.lib Fri Feb 28 17:36:48 2020 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#bc132a6066cafdb9e4028251b5aff7cfcbcaa444