Curtis Mulady / Mbed 2 deprecated 4180_mP_WirelessPong_revC

ir stuff working nicely. rx on interrupt. tx is blocking.

Fork of 4180_mP_WirelessPong_revB by Curtis Mulady

main.cpp@14:68f7cefd7359, 2012-10-06 (annotated)

Committer:
cmulady
Date:
Sat Oct 06 02:46:01 2012 +0000
Revision:
14:68f7cefd7359
Parent:
13:17fd813ef7c9
Child:
15:21c512907cf6
bad luck ol mum;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cmulady 0:c8ddcaa575ba 1 #include "mbed.h"
cmulady 0:c8ddcaa575ba 2 #include "rtos.h"
cmulady 0:c8ddcaa575ba 3 #include "NokiaLCD.h"
cmulady 1:9ba884d85ac6 4 #include "XMIT_IR.h"
cmulady 0:c8ddcaa575ba 5
cmulady 1:9ba884d85ac6 6 #define FPS 5
cmulady 1:9ba884d85ac6 7
cmulady 3:8e492eacd346 8 /****************************************
cmulady 3:8e492eacd346 9 |=======================================|
cmulady 3:8e492eacd346 10 |MBED Connections: |
cmulady 3:8e492eacd346 11 | -p5 : DIO on Sparkfun Nokia LCD |
cmulady 3:8e492eacd346 12 | -p7 : CLK on Sparkfun Nokia LCD |
cmulady 3:8e492eacd346 13 | -p8 : CS on Sparkfun Nokia LCD |
cmulady 3:8e492eacd346 14 | -p9 : RST on Sparkfun Nokia LCD |
cmulady 12:9acca1dd0e8e 15 | -p21: CTL on Sparkfun IR Xmitter |
cmulady 12:9acca1dd0e8e 16 | -p14: OUT on Sparkfun IR Rcvr |
cmulady 12:9acca1dd0e8e 17 | -p13: GND on Sparkfun IR Xmitter |
cmulady 3:8e492eacd346 18 |=======================================|
cmulady 3:8e492eacd346 19 ****************************************/
cmulady 1:9ba884d85ac6 20
cmulady 13:17fd813ef7c9 21 //Function Prototypes
cmulady 13:17fd813ef7c9 22 void BlinkAlive(void const* arguments);
cmulady 13:17fd813ef7c9 23 void UpdateLCD(void const* arguments);
cmulady 13:17fd813ef7c9 24 void IRStuff(void const* arguments);
cmulady 13:17fd813ef7c9 25 void ISR_UARTRX(void);
cmulady 13:17fd813ef7c9 26 char CheckPacket(char new_data, char* packet_buffer, char* data, int data_len);
cmulady 13:17fd813ef7c9 27 void MakePacket2(char* data,int len);
cmulady 13:17fd813ef7c9 28
cmulady 3:8e492eacd346 29 //Pin Setup
cmulady 13:17fd813ef7c9 30 PwmOut led1(LED1);
cmulady 13:17fd813ef7c9 31 PwmOut led2(LED2);
cmulady 3:8e492eacd346 32 DigitalOut led3(LED3);
cmulady 3:8e492eacd346 33 DigitalOut led4(LED4);
cmulady 0:c8ddcaa575ba 34 NokiaLCD lcd(p5, p7, p8, p9, NokiaLCD::LCD6610); // mosi, sclk, cs, rst, type
cmulady 13:17fd813ef7c9 35 Serial* devicerx;
cmulady 13:17fd813ef7c9 36
cmulady 13:17fd813ef7c9 37 //Serial devicetx(p13,NC);
cmulady 6:5563f0026858 38 Serial pc(USBTX,USBRX);
cmulady 5:2e08cc167fff 39 PwmOut IRLED_mod(p21);
cmulady 1:9ba884d85ac6 40
cmulady 13:17fd813ef7c9 41 IRTransmitter ir_tx(p13,p21,p14,4,&ISR_UARTRX); //tx,pwm,size
cmulady 13:17fd813ef7c9 42
cmulady 3:8e492eacd346 43 //Global Vars
cmulady 12:9acca1dd0e8e 44 char text_buffer[32];
cmulady 6:5563f0026858 45 char irdatOUT[10];
cmulady 6:5563f0026858 46 char irdatIN[10];
cmulady 12:9acca1dd0e8e 47 char irdata_out=0;
cmulady 6:5563f0026858 48 char error_code=0;
cmulady 8:54dd4a3d0de9 49 Thread* threadptr_irstuff;
cmulady 9:3e4e9d6a8ad8 50 char packet_buff[10];
cmulady 10:4fcd5bdb9642 51 Mail<char,64> rx_data_mailbox;
cmulady 1:9ba884d85ac6 52
cmulady 13:17fd813ef7c9 53
cmulady 1:9ba884d85ac6 54
cmulady 1:9ba884d85ac6 55
cmulady 1:9ba884d85ac6 56 int main()
cmulady 1:9ba884d85ac6 57 {
cmulady 0:c8ddcaa575ba 58
cmulady 3:8e492eacd346 59 //LCD init
cmulady 0:c8ddcaa575ba 60 lcd.background(0x000000);
cmulady 1:9ba884d85ac6 61
cmulady 6:5563f0026858 62 //PC serial init
cmulady 6:5563f0026858 63 pc.baud(19200);
cmulady 7:c9ff6b5c8507 64 pc.printf("Starting...\n\n");
cmulady 6:5563f0026858 65
cmulady 13:17fd813ef7c9 66 //Serial init
cmulady 13:17fd813ef7c9 67 /*devicerx = new Serial(p13, p14); // tx, rx
cmulady 13:17fd813ef7c9 68 (*devicerx).baud(2400);
cmulady 13:17fd813ef7c9 69 //devicetx.baud(2400);
cmulady 13:17fd813ef7c9 70 (*devicerx).attach(&ISR_UARTRX,Serial::RxIrq);
cmulady 13:17fd813ef7c9 71 IRLED_mod.period(1.0/38000.0); //38kHz Modulation Freq
cmulady 13:17fd813ef7c9 72 IRLED_mod = 0.5; */
cmulady 13:17fd813ef7c9 73
cmulady 13:17fd813ef7c9 74
cmulady 9:3e4e9d6a8ad8 75 //Variable Init
cmulady 9:3e4e9d6a8ad8 76 for(int i=0; i<10; i++) packet_buff[i]=0;
cmulady 9:3e4e9d6a8ad8 77
cmulady 12:9acca1dd0e8e 78 //Threads init
cmulady 1:9ba884d85ac6 79 Thread thread_blinkalive(BlinkAlive);
cmulady 1:9ba884d85ac6 80 Thread thread_updatelcd(UpdateLCD);
cmulady 3:8e492eacd346 81 Thread thread_irstuff(IRStuff);
cmulady 8:54dd4a3d0de9 82 threadptr_irstuff = &thread_irstuff;
cmulady 1:9ba884d85ac6 83
cmulady 1:9ba884d85ac6 84
cmulady 1:9ba884d85ac6 85
cmulady 0:c8ddcaa575ba 86 while(1) {
cmulady 13:17fd813ef7c9 87
cmulady 12:9acca1dd0e8e 88 //Use main loop to set LCD framerate
cmulady 1:9ba884d85ac6 89 thread_updatelcd.signal_set(0x1);
cmulady 1:9ba884d85ac6 90 Thread::wait(1000/FPS);
cmulady 1:9ba884d85ac6 91
cmulady 0:c8ddcaa575ba 92 }
cmulady 0:c8ddcaa575ba 93 }
cmulady 1:9ba884d85ac6 94
cmulady 1:9ba884d85ac6 95 void UpdateLCD(void const* arguments)
cmulady 1:9ba884d85ac6 96 {
cmulady 7:c9ff6b5c8507 97 while(true) {
cmulady 13:17fd813ef7c9 98
cmulady 12:9acca1dd0e8e 99 //Start flash LED
cmulady 13:17fd813ef7c9 100 led2 = 0.02;
cmulady 13:17fd813ef7c9 101
cmulady 12:9acca1dd0e8e 102 //Write debug text to screen
cmulady 1:9ba884d85ac6 103 lcd.locate(0,1);
cmulady 1:9ba884d85ac6 104 lcd.printf("Debug:");
cmulady 1:9ba884d85ac6 105 lcd.locate(0,3);
cmulady 1:9ba884d85ac6 106 time_t seconds = time(NULL);
cmulady 12:9acca1dd0e8e 107 strftime(text_buffer, 32, "%I:%M:%S %p\n", localtime(&seconds));
cmulady 12:9acca1dd0e8e 108 lcd.printf("%s", text_buffer);
cmulady 3:8e492eacd346 109 lcd.locate(0,4);
cmulady 6:5563f0026858 110 lcd.printf("IR_OUT=0x%02X,0x%02X", irdatOUT[0],irdatOUT[1]);
cmulady 3:8e492eacd346 111 lcd.locate(0,5);
cmulady 6:5563f0026858 112 lcd.printf("IR_IN= 0x%02X,0x%02X", irdatIN[0],irdatIN[1]);
cmulady 6:5563f0026858 113 lcd.locate(0,6);
cmulady 6:5563f0026858 114 lcd.printf("Error= 0x%02X", error_code);
cmulady 3:8e492eacd346 115
cmulady 12:9acca1dd0e8e 116 //End - flash LED
cmulady 13:17fd813ef7c9 117 led2 = 0.0;
cmulady 1:9ba884d85ac6 118 //End - Sleep thread
cmulady 1:9ba884d85ac6 119 Thread::signal_wait(0x1);
cmulady 7:c9ff6b5c8507 120 }
cmulady 1:9ba884d85ac6 121 }
cmulady 1:9ba884d85ac6 122
cmulady 3:8e492eacd346 123 void IRStuff(void const* arguments)
cmulady 3:8e492eacd346 124 {
cmulady 3:8e492eacd346 125 while(true) {
cmulady 7:c9ff6b5c8507 126
cmulady 12:9acca1dd0e8e 127 //If data available - Print data directly to USB port (for debug)
cmulady 14:68f7cefd7359 128 osEvent evt = rx_data_mailbox.get();
cmulady 10:4fcd5bdb9642 129 while(evt.status == osEventMail) {
cmulady 10:4fcd5bdb9642 130 char* mail = (char*)evt.value.p;
cmulady 13:17fd813ef7c9 131 //if((*mail)==0x02) pc.printf("\n");
cmulady 13:17fd813ef7c9 132 //pc.printf("0x%02X.",*mail);
cmulady 13:17fd813ef7c9 133 error_code = CheckPacket(*mail,packet_buff,irdatIN,4);
cmulady 13:17fd813ef7c9 134 pc.printf(" ERROR=0x%02X.\n",error_code);
cmulady 13:17fd813ef7c9 135
cmulady 10:4fcd5bdb9642 136 rx_data_mailbox.free(mail);
cmulady 10:4fcd5bdb9642 137 evt = rx_data_mailbox.get();
cmulady 14:68f7cefd7359 138 }
cmulady 10:4fcd5bdb9642 139
cmulady 14:68f7cefd7359 140 /*char* data;
cmulady 13:17fd813ef7c9 141 while(ir_tx.ReadPacket(data)==0)
cmulady 13:17fd813ef7c9 142 pc.printf("0x%02X.",*data);
cmulady 14:68f7cefd7359 143 */
cmulady 13:17fd813ef7c9 144
cmulady 12:9acca1dd0e8e 145 //Do not return until we have more data
cmulady 13:17fd813ef7c9 146 //Thread::signal_wait(0x1);
cmulady 13:17fd813ef7c9 147 Thread::wait(20);
cmulady 3:8e492eacd346 148 }
cmulady 4:8fdff78c13c8 149
cmulady 3:8e492eacd346 150 }
cmulady 3:8e492eacd346 151
cmulady 13:17fd813ef7c9 152 char CheckPacket(char new_data, char* packet_buffer, char* data, int data_len)
cmulady 6:5563f0026858 153 {
cmulady 13:17fd813ef7c9 154 //Requires a packet buffer of length 'data_len'+3.
cmulady 9:3e4e9d6a8ad8 155 //Shifts data and checks each 'set' for a valid packet.
cmulady 9:3e4e9d6a8ad8 156 //Once a valid packet is receievd, the data buffer is updated with new values.
cmulady 13:17fd813ef7c9 157 //returns success(0) or failure(error code)
cmulady 13:17fd813ef7c9 158
cmulady 9:3e4e9d6a8ad8 159
cmulady 9:3e4e9d6a8ad8 160 char check=0x0;
cmulady 9:3e4e9d6a8ad8 161 //Shift All data 1 cell over
cmulady 13:17fd813ef7c9 162 for(int i=0; i<data_len+2; i++) {
cmulady 9:3e4e9d6a8ad8 163 packet_buffer[i] = packet_buffer[i+1];
cmulady 9:3e4e9d6a8ad8 164 }
cmulady 13:17fd813ef7c9 165 packet_buffer[data_len+2] = new_data;
cmulady 9:3e4e9d6a8ad8 166
cmulady 9:3e4e9d6a8ad8 167 //check for valid packet
cmulady 13:17fd813ef7c9 168 if(packet_buffer[0]!=ASCII_STX)
cmulady 9:3e4e9d6a8ad8 169 return 0x1; //bad start byte
cmulady 13:17fd813ef7c9 170 if(packet_buffer[data_len+2]!=ASCII_ETX)
cmulady 13:17fd813ef7c9 171 return 0x2; //bad end byte
cmulady 9:3e4e9d6a8ad8 172
cmulady 9:3e4e9d6a8ad8 173 for(int i=1; i<data_len+1; i++) {
cmulady 9:3e4e9d6a8ad8 174 check^=packet_buffer[i];
cmulady 9:3e4e9d6a8ad8 175 }
cmulady 9:3e4e9d6a8ad8 176 if(check==packet_buffer[data_len+1]) {
cmulady 9:3e4e9d6a8ad8 177 return 0;
cmulady 9:3e4e9d6a8ad8 178 }
cmulady 13:17fd813ef7c9 179
cmulady 9:3e4e9d6a8ad8 180 return 0;
cmulady 9:3e4e9d6a8ad8 181 }
cmulady 9:3e4e9d6a8ad8 182
cmulady 13:17fd813ef7c9 183 void BlinkAlive(void const* arguments)
cmulady 13:17fd813ef7c9 184 {
cmulady 13:17fd813ef7c9 185 while(true) {
cmulady 13:17fd813ef7c9 186
cmulady 13:17fd813ef7c9 187 //Change LED1 state (debug)
cmulady 13:17fd813ef7c9 188 (led1==0.0)?led1=0.02:led1=0.0;
cmulady 13:17fd813ef7c9 189
cmulady 13:17fd813ef7c9 190 //Form a test packet and send it over IR transmitter
cmulady 13:17fd813ef7c9 191 irdatOUT[0] = 0xA5;
cmulady 13:17fd813ef7c9 192 irdatOUT[1] = ++irdata_out;
cmulady 13:17fd813ef7c9 193 irdatOUT[2] = ~(irdata_out*2);
cmulady 13:17fd813ef7c9 194 irdatOUT[3] = irdata_out*7+13;
cmulady 13:17fd813ef7c9 195 //MakePacket2(irdatOUT,4);
cmulady 13:17fd813ef7c9 196 ir_tx.MakePacket(irdatOUT,4);
cmulady 13:17fd813ef7c9 197
cmulady 13:17fd813ef7c9 198 //Roughly use to set rate of data packets per second
cmulady 13:17fd813ef7c9 199 Thread::wait(50);
cmulady 13:17fd813ef7c9 200 }
cmulady 13:17fd813ef7c9 201 }
cmulady 13:17fd813ef7c9 202
cmulady 13:17fd813ef7c9 203 void MakePacket2(char* data,int len)
cmulady 13:17fd813ef7c9 204 {
cmulady 13:17fd813ef7c9 205 /*char check =0x0;
cmulady 13:17fd813ef7c9 206 (*devicerx).putc(ASCII_STX);
cmulady 13:17fd813ef7c9 207 for(int i=0; i<len; i++) {
cmulady 13:17fd813ef7c9 208 check^=data[i];
cmulady 13:17fd813ef7c9 209 (*devicerx).putc(data[i]);
cmulady 13:17fd813ef7c9 210 }
cmulady 13:17fd813ef7c9 211 (*devicerx).putc(check);
cmulady 13:17fd813ef7c9 212 (*devicerx).putc(ASCII_ETX);*/
cmulady 13:17fd813ef7c9 213 }
cmulady 13:17fd813ef7c9 214
cmulady 13:17fd813ef7c9 215
cmulady 13:17fd813ef7c9 216
cmulady 12:9acca1dd0e8e 217 //Handle Reception of RX data (mail it to appropriate thread)
cmulady 14:68f7cefd7359 218 void ISR_UARTRX()
cmulady 7:c9ff6b5c8507 219 {
cmulady 12:9acca1dd0e8e 220 //get RX data (and prevent ISR from looping forever
cmulady 7:c9ff6b5c8507 221 uint32_t RBR = LPC_UART1->RBR;
cmulady 9:3e4e9d6a8ad8 222
cmulady 12:9acca1dd0e8e 223 //write letter and put in mailbox
cmulady 14:68f7cefd7359 224 char* mail = rx_data_mailbox.alloc();
cmulady 10:4fcd5bdb9642 225 mail[0] = (char)RBR;
cmulady 14:68f7cefd7359 226 rx_data_mailbox.put(mail);
cmulady 14:68f7cefd7359 227
cmulady 10:4fcd5bdb9642 228
cmulady 12:9acca1dd0e8e 229 //Let message handler run
cmulady 8:54dd4a3d0de9 230 (*threadptr_irstuff).signal_set(0x1);
cmulady 8:54dd4a3d0de9 231
cmulady 7:c9ff6b5c8507 232 }
cmulady 7:c9ff6b5c8507 233