Yujing Qian / Mbed 2 deprecated 202hm2_master

//EE 202 hm2 //This is a program built for the mbed1(master mbed) in generation mode //This code has been tested and should be function, if you has any problem, //please mail me.

Dependencies:   mbed

main.cpp@3:5149e55c21e3, 2014-03-16 (annotated)

Committer:
allonq
Date:
Sun Mar 16 08:06:07 2014 +0000
Revision:
3:5149e55c21e3
Parent:
2:1c7e1110ac61 
//EE 202 hm2; //This is a program built for the mbed1(master mbed) in generation mode; //This code has been tested and should be function, if you has any problem,; //please mail me.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
allonq 3:5149e55c21e3 1 //EE 202 hm2
allonq 3:5149e55c21e3 2 //This is a program built for the mbed1(master mbed) in generation mode
allonq 3:5149e55c21e3 3 //This code has been tested and should be function, if you has any problem,
allonq 3:5149e55c21e3 4 //please mail me.
allonq 3:5149e55c21e3 5 //Author: Yujing Qian
allonq 3:5149e55c21e3 6 //y.qian42@gmail.com
allonq 0:fac0542384d7 7 #include "mbed.h"
allonq 0:fac0542384d7 8
allonq 0:fac0542384d7 9 #define mod 0x0000bb80
allonq 0:fac0542384d7 10 #define duty_cycle 0.5
allonq 0:fac0542384d7 11 #define high_cycle mod*duty_cycle
allonq 0:fac0542384d7 12 #define low_cycle mod-high_cycle
allonq 0:fac0542384d7 13 #define buffer_size 9
allonq 0:fac0542384d7 14 #define BBBbuff_size 30
allonq 0:fac0542384d7 15
allonq 0:fac0542384d7 16 DigitalOut LED(LED_RED);
allonq 2:1c7e1110ac61 17 DigitalOut out(PTD4);
allonq 2:1c7e1110ac61 18 Serial uart_bbb(PTE16,PTE17);
allonq 2:1c7e1110ac61 19 Serial uart(PTE0, PTE1);
allonq 0:fac0542384d7 20 Serial pc(USBTX,USBRX);
allonq 0:fac0542384d7 21
allonq 1:55f3661a2050 22 int loop_num=0;
allonq 2:1c7e1110ac61 23 int per_num=0;
allonq 2:1c7e1110ac61 24 int Period=500;
allonq 0:fac0542384d7 25 int state=0;
allonq 0:fac0542384d7 26 uint32_t T1=0;
allonq 0:fac0542384d7 27 uint32_t T2=0;
allonq 0:fac0542384d7 28 uint32_t T3=0;
allonq 0:fac0542384d7 29 uint32_t T4=0;
allonq 2:1c7e1110ac61 30 bool flag=false;
allonq 2:1c7e1110ac61 31 int syc_f=2;
allonq 2:1c7e1110ac61 32 int syc_interval=1000/syc_f;
allonq 2:1c7e1110ac61 33 uint32_t syc_cnt=0;
allonq 2:1c7e1110ac61 34
allonq 0:fac0542384d7 35 uint32_t Mod=mod;
allonq 0:fac0542384d7 36 char BBBbuffer[BBBbuff_size];
allonq 0:fac0542384d7 37 bool cmd_received=false;
allonq 0:fac0542384d7 38 int BBBbuff=0;
allonq 0:fac0542384d7 39 char buffer[4];
allonq 1:55f3661a2050 40 int buff=0;
allonq 2:1c7e1110ac61 41 uint32_t TIME(){return per_num*Period*48000+loop_num*48000+(TPM0->CNT);}
allonq 0:fac0542384d7 42
allonq 0:fac0542384d7 43 void receive_handler(){
allonq 3:5149e55c21e3 44 while( pc.readable() && BBBbuff<BBBbuff_size){
allonq 3:5149e55c21e3 45 BBBbuffer[BBBbuff] =pc.getc();
allonq 3:5149e55c21e3 46 pc.putc(BBBbuffer[BBBbuff]);
allonq 0:fac0542384d7 47 //pc.printf(& rx_buffer[buff]);
allonq 0:fac0542384d7 48 if (BBBbuffer[BBBbuff] == '#'){
allonq 0:fac0542384d7 49 BBBbuffer[BBBbuff] = '\0';
allonq 0:fac0542384d7 50 cmd_received=true;
allonq 0:fac0542384d7 51 BBBbuff++;
allonq 0:fac0542384d7 52 pc.printf("cmd received\n");
allonq 0:fac0542384d7 53 break;
allonq 0:fac0542384d7 54 }
allonq 0:fac0542384d7 55 BBBbuff++;
allonq 0:fac0542384d7 56 }
allonq 0:fac0542384d7 57 return;
allonq 0:fac0542384d7 58 }
allonq 0:fac0542384d7 59 void TPM1_IRQHandler(void);
allonq 2:1c7e1110ac61 60 uint32_t calculate_delay(){// calculate delay using hand shake
allonq 2:1c7e1110ac61 61
allonq 1:55f3661a2050 62
allonq 2:1c7e1110ac61 63 T1=TIME();
allonq 2:1c7e1110ac61 64 uart.putc('a');
allonq 2:1c7e1110ac61 65 uart.getc();
allonq 0:fac0542384d7 66 T4=TIME();
allonq 2:1c7e1110ac61 67
allonq 2:1c7e1110ac61 68 return (T4-T1)/2;
allonq 2:1c7e1110ac61 69 }
allonq 2:1c7e1110ac61 70 void Syc(uint32_t delay){
allonq 2:1c7e1110ac61 71 //pc.printf("delay=%d\n",delay);
allonq 0:fac0542384d7 72 TPM1->MOD=delay;
allonq 0:fac0542384d7 73 TPM1->CNT=0x0;
allonq 2:1c7e1110ac61 74 //loop_num=0;
allonq 2:1c7e1110ac61 75 TPM1->SC=0x000000c8;
allonq 2:1c7e1110ac61 76 NVIC_EnableIRQ(TPM1_IRQn);
allonq 2:1c7e1110ac61 77 // open tpm1
allonq 2:1c7e1110ac61 78 uart.putc(0);//send signal to slave
allonq 2:1c7e1110ac61 79 }
allonq 2:1c7e1110ac61 80 void synchronize(uint32_t Cmd_per){
allonq 2:1c7e1110ac61 81
allonq 2:1c7e1110ac61 82 char* tmp=(char*)&Cmd_per;
allonq 2:1c7e1110ac61 83
allonq 2:1c7e1110ac61 84 uart.getc();
allonq 2:1c7e1110ac61 85 //pc.printf("TFS love xuemei");
allonq 2:1c7e1110ac61 86 uart.putc((*tmp));//pc.printf("0=%d\n",*tmp);
allonq 2:1c7e1110ac61 87 uart.getc();
allonq 2:1c7e1110ac61 88 uart.putc((*(tmp+1)));//pc.printf("1=%d\n",(*(tmp+1)));
allonq 2:1c7e1110ac61 89 uart.getc();
allonq 2:1c7e1110ac61 90 uart.putc((*(tmp+2)));//pc.printf("2=%d\n",(*(tmp+2)));
allonq 2:1c7e1110ac61 91 uart.getc();
allonq 2:1c7e1110ac61 92 uart.putc((*(tmp+3)));//pc.printf("3=%d\n",(*(tmp+3)));
allonq 3:5149e55c21e3 93 uart.getc();//clear the buffer
allonq 2:1c7e1110ac61 94 Period=Cmd_per;
allonq 3:5149e55c21e3 95 Syc(calculate_delay());
allonq 3:5149e55c21e3 96 loop_num=0;//clear clock
allonq 2:1c7e1110ac61 97 }
allonq 2:1c7e1110ac61 98
allonq 2:1c7e1110ac61 99 void TPM0_IRQHandler(void){
allonq 3:5149e55c21e3 100
allonq 2:1c7e1110ac61 101 loop_num++;
allonq 3:5149e55c21e3 102
allonq 2:1c7e1110ac61 103 if(loop_num==Period){
allonq 2:1c7e1110ac61 104 out=!out;
allonq 2:1c7e1110ac61 105 LED=!LED;
allonq 2:1c7e1110ac61 106 per_num++;
allonq 2:1c7e1110ac61 107 loop_num=0;
allonq 2:1c7e1110ac61 108 }
allonq 0:fac0542384d7 109 TPM0->SC|= 0x000000c8;
allonq 2:1c7e1110ac61 110
allonq 0:fac0542384d7 111 return;
allonq 0:fac0542384d7 112 }
allonq 0:fac0542384d7 113
allonq 2:1c7e1110ac61 114 void TPM1_IRQHandler(void){// time to restart the system
allonq 2:1c7e1110ac61 115 LED=1;
allonq 0:fac0542384d7 116 //TPM0->SC= 0x000000c8;
allonq 3:5149e55c21e3 117 TPM0->CNT=0x0;
allonq 0:fac0542384d7 118 TPM1->CNT=0x0;
allonq 2:1c7e1110ac61 119 //pc.printf("SC=%d",TPM1->SC);
allonq 0:fac0542384d7 120 TPM1->SC= 0x00000080;
allonq 2:1c7e1110ac61 121 //TPM1->SC= 0x00000000;
allonq 2:1c7e1110ac61 122 //pc.printf("SC_after=%d\n",TPM1->SC);
allonq 2:1c7e1110ac61 123 //pc.printf("Tic-Toc\n");
allonq 0:fac0542384d7 124 NVIC_DisableIRQ(TPM1_IRQn);
allonq 2:1c7e1110ac61 125 //NVIC_ClearPendingIRQ(TPM1_IRQn);
allonq 2:1c7e1110ac61 126 //flag=true;
allonq 2:1c7e1110ac61 127 //pc.printf("Tic-Toc\n");
allonq 0:fac0542384d7 128 return;
allonq 0:fac0542384d7 129 }
allonq 0:fac0542384d7 130
allonq 2:1c7e1110ac61 131
allonq 0:fac0542384d7 132
allonq 0:fac0542384d7 133 void Initial(){
allonq 2:1c7e1110ac61 134 Period=1000;
allonq 0:fac0542384d7 135 LED=1;
allonq 2:1c7e1110ac61 136 out=0;
allonq 2:1c7e1110ac61 137 SIM->SOPT2=0x05000000;
allonq 0:fac0542384d7 138 SIM->SCGC6=0x03000000;//enable TPM 0,1
allonq 0:fac0542384d7 139 TPM0->SC=0x0;
allonq 1:55f3661a2050 140
allonq 0:fac0542384d7 141 TPM0->CNT=0x0;
allonq 0:fac0542384d7 142 TPM0->SC=0x00000040;
allonq 0:fac0542384d7 143 TPM0->MOD=0x0000bb80;
allonq 0:fac0542384d7 144 TPM0->SC=0x00000048;//0008
allonq 0:fac0542384d7 145
allonq 0:fac0542384d7 146 TPM1->CNT=0x0;
allonq 0:fac0542384d7 147 TPM1->SC=0x00000040;
allonq 0:fac0542384d7 148 TPM1->MOD=0x0000ffff;
allonq 0:fac0542384d7 149 TPM1->SC=0x00000008;//0008
allonq 0:fac0542384d7 150 }
allonq 0:fac0542384d7 151 int main() {
allonq 1:55f3661a2050 152 loop_num=0;
allonq 0:fac0542384d7 153 cmd_received=false;
allonq 3:5149e55c21e3 154 pc.attach(&receive_handler);
allonq 2:1c7e1110ac61 155 int CMD_Per=0;
allonq 0:fac0542384d7 156 Initial();
allonq 0:fac0542384d7 157
allonq 3:5149e55c21e3 158 pc.baud(9600);
allonq 3:5149e55c21e3 159 pc.attach(&receive_handler);
allonq 2:1c7e1110ac61 160
allonq 2:1c7e1110ac61 161 uart.baud(9600);
allonq 0:fac0542384d7 162 pc.baud(9600);
allonq 0:fac0542384d7 163
allonq 0:fac0542384d7 164 NVIC_SetVector(TPM0_IRQn, (uint32_t)&TPM0_IRQHandler);
allonq 0:fac0542384d7 165 NVIC_SetPriority(TPM0_IRQn, 1);
allonq 0:fac0542384d7 166 NVIC_EnableIRQ(TPM0_IRQn);
allonq 0:fac0542384d7 167
allonq 0:fac0542384d7 168 NVIC_SetVector(TPM1_IRQn, (uint32_t)&TPM1_IRQHandler);
allonq 0:fac0542384d7 169 NVIC_SetPriority(TPM1_IRQn, 0);
allonq 0:fac0542384d7 170 NVIC_EnableIRQ(TPM1_IRQn);
allonq 2:1c7e1110ac61 171 //wait(5);
allonq 2:1c7e1110ac61 172 //pc.printf("Initial done\n");
allonq 0:fac0542384d7 173
allonq 0:fac0542384d7 174
allonq 2:1c7e1110ac61 175 pc.printf("please enter T(in us)...\n");
allonq 2:1c7e1110ac61 176 //Syc(2000000);
allonq 2:1c7e1110ac61 177
allonq 0:fac0542384d7 178 //Syc(48000);
allonq 0:fac0542384d7 179
allonq 0:fac0542384d7 180 while(1){
allonq 0:fac0542384d7 181 if(cmd_received){
allonq 0:fac0542384d7 182 pc.printf(BBBbuffer);
allonq 0:fac0542384d7 183 for(int i=0;i<BBBbuff-1;i++){
allonq 2:1c7e1110ac61 184 CMD_Per*=10;
allonq 2:1c7e1110ac61 185 CMD_Per+=(BBBbuffer[i]-'0');
allonq 0:fac0542384d7 186 }
allonq 0:fac0542384d7 187 cmd_received=false;
allonq 0:fac0542384d7 188 BBBbuff=0;
allonq 2:1c7e1110ac61 189 Period=CMD_Per;
allonq 2:1c7e1110ac61 190 uart.putc('#');
allonq 2:1c7e1110ac61 191 synchronize(CMD_Per);
allonq 2:1c7e1110ac61 192 CMD_Per=0;
allonq 0:fac0542384d7 193 }
allonq 0:fac0542384d7 194
allonq 0:fac0542384d7 195 }
allonq 0:fac0542384d7 196
allonq 0:fac0542384d7 197
allonq 0:fac0542384d7 198 }