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@17:f92e4a384637, 2012-10-06 (annotated)

Committer:
cmulady
Date:
Sat Oct 06 13:40:39 2012 +0000
Revision:
17:f92e4a384637
Parent:
16:bc0e213ba52d
Child:
18:98839f78fc01
mutex lock = black magic; all problems fixed

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 16:bc0e213ba52d 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 17:f92e4a384637 52 Mutex data_update_mutex;
cmulady 1:9ba884d85ac6 53
cmulady 13:17fd813ef7c9 54
cmulady 1:9ba884d85ac6 55
cmulady 1:9ba884d85ac6 56
cmulady 1:9ba884d85ac6 57 int main()
cmulady 1:9ba884d85ac6 58 {
cmulady 0:c8ddcaa575ba 59
cmulady 3:8e492eacd346 60 //LCD init
cmulady 0:c8ddcaa575ba 61 lcd.background(0x000000);
cmulady 1:9ba884d85ac6 62
cmulady 6:5563f0026858 63 //PC serial init
cmulady 6:5563f0026858 64 pc.baud(19200);
cmulady 7:c9ff6b5c8507 65 pc.printf("Starting...\n\n");
cmulady 6:5563f0026858 66
cmulady 16:bc0e213ba52d 67 //IR_TRX module
cmulady 16:bc0e213ba52d 68 ir_tx.set_debug_port(&pc);
cmulady 16:bc0e213ba52d 69
cmulady 13:17fd813ef7c9 70
cmulady 9:3e4e9d6a8ad8 71 //Variable Init
cmulady 9:3e4e9d6a8ad8 72 for(int i=0; i<10; i++) packet_buff[i]=0;
cmulady 9:3e4e9d6a8ad8 73
cmulady 12:9acca1dd0e8e 74 //Threads init
cmulady 1:9ba884d85ac6 75 Thread thread_blinkalive(BlinkAlive);
cmulady 1:9ba884d85ac6 76 Thread thread_updatelcd(UpdateLCD);
cmulady 3:8e492eacd346 77 Thread thread_irstuff(IRStuff);
cmulady 8:54dd4a3d0de9 78 threadptr_irstuff = &thread_irstuff;
cmulady 1:9ba884d85ac6 79
cmulady 1:9ba884d85ac6 80
cmulady 1:9ba884d85ac6 81
cmulady 0:c8ddcaa575ba 82 while(1) {
cmulady 13:17fd813ef7c9 83
cmulady 12:9acca1dd0e8e 84 //Use main loop to set LCD framerate
cmulady 1:9ba884d85ac6 85 thread_updatelcd.signal_set(0x1);
cmulady 1:9ba884d85ac6 86 Thread::wait(1000/FPS);
cmulady 1:9ba884d85ac6 87
cmulady 0:c8ddcaa575ba 88 }
cmulady 0:c8ddcaa575ba 89 }
cmulady 1:9ba884d85ac6 90
cmulady 1:9ba884d85ac6 91 void UpdateLCD(void const* arguments)
cmulady 1:9ba884d85ac6 92 {
cmulady 7:c9ff6b5c8507 93 while(true) {
cmulady 13:17fd813ef7c9 94
cmulady 12:9acca1dd0e8e 95 //Start flash LED
cmulady 13:17fd813ef7c9 96 led2 = 0.02;
cmulady 17:f92e4a384637 97 data_update_mutex.lock();
cmulady 17:f92e4a384637 98 char irdatbuff[4];
cmulady 17:f92e4a384637 99 for(int i=0; i<4; i++) irdatbuff[i] = irdatIN[i];
cmulady 17:f92e4a384637 100 data_update_mutex.unlock();
cmulady 17:f92e4a384637 101
cmulady 17:f92e4a384637 102 if(irdatbuff[0]!=0xA5 && irdatbuff[0]!=0x00) {
cmulady 17:f92e4a384637 103 lcd.locate(0,7);
cmulady 17:f92e4a384637 104 lcd.printf("Big Problem! 0x%02X",irdatbuff[0]);
cmulady 17:f92e4a384637 105 while(1);
cmulady 17:f92e4a384637 106 }
cmulady 17:f92e4a384637 107
cmulady 13:17fd813ef7c9 108
cmulady 12:9acca1dd0e8e 109 //Write debug text to screen
cmulady 1:9ba884d85ac6 110 lcd.locate(0,1);
cmulady 1:9ba884d85ac6 111 lcd.printf("Debug:");
cmulady 1:9ba884d85ac6 112 lcd.locate(0,3);
cmulady 1:9ba884d85ac6 113 time_t seconds = time(NULL);
cmulady 12:9acca1dd0e8e 114 strftime(text_buffer, 32, "%I:%M:%S %p\n", localtime(&seconds));
cmulady 12:9acca1dd0e8e 115 lcd.printf("%s", text_buffer);
cmulady 3:8e492eacd346 116 lcd.locate(0,4);
cmulady 6:5563f0026858 117 lcd.printf("IR_OUT=0x%02X,0x%02X", irdatOUT[0],irdatOUT[1]);
cmulady 3:8e492eacd346 118 lcd.locate(0,5);
cmulady 17:f92e4a384637 119 lcd.printf("IR_IN= 0x%02X,0x%02X", irdatbuff[0],irdatbuff[1]);
cmulady 6:5563f0026858 120 lcd.locate(0,6);
cmulady 6:5563f0026858 121 lcd.printf("Error= 0x%02X", error_code);
cmulady 3:8e492eacd346 122
cmulady 12:9acca1dd0e8e 123 //End - flash LED
cmulady 13:17fd813ef7c9 124 led2 = 0.0;
cmulady 1:9ba884d85ac6 125 //End - Sleep thread
cmulady 1:9ba884d85ac6 126 Thread::signal_wait(0x1);
cmulady 7:c9ff6b5c8507 127 }
cmulady 1:9ba884d85ac6 128 }
cmulady 1:9ba884d85ac6 129
cmulady 3:8e492eacd346 130 void IRStuff(void const* arguments)
cmulady 3:8e492eacd346 131 {
cmulady 3:8e492eacd346 132 while(true) {
cmulady 7:c9ff6b5c8507 133
cmulady 12:9acca1dd0e8e 134 //If data available - Print data directly to USB port (for debug)
cmulady 16:bc0e213ba52d 135
cmulady 16:bc0e213ba52d 136 char result;
cmulady 17:f92e4a384637 137 char temp_buff[4];
cmulady 17:f92e4a384637 138
cmulady 17:f92e4a384637 139 //buffer data into temp register
cmulady 17:f92e4a384637 140 result = ir_tx.ReadPacket(temp_buff,4);
cmulady 17:f92e4a384637 141
cmulady 16:bc0e213ba52d 142 if(result == 0x1) {
cmulady 16:bc0e213ba52d 143 pc.printf("\n");
cmulady 17:f92e4a384637 144 //update data - mutex
cmulady 17:f92e4a384637 145 data_update_mutex.lock();
cmulady 17:f92e4a384637 146 for(int i=0; i<4; i++) {
cmulady 17:f92e4a384637 147 irdatIN[i] = temp_buff[i];
cmulady 17:f92e4a384637 148 }
cmulady 17:f92e4a384637 149 data_update_mutex.unlock();
cmulady 16:bc0e213ba52d 150 for(int i=0; i<4; i++) {
cmulady 16:bc0e213ba52d 151 pc.printf("0x%02X.",irdatIN[i]);
cmulady 16:bc0e213ba52d 152 }
cmulady 16:bc0e213ba52d 153 }
cmulady 16:bc0e213ba52d 154
cmulady 15:21c512907cf6 155
cmulady 13:17fd813ef7c9 156
cmulady 12:9acca1dd0e8e 157 //Do not return until we have more data
cmulady 13:17fd813ef7c9 158 //Thread::signal_wait(0x1);
cmulady 16:bc0e213ba52d 159 Thread::wait(10);
cmulady 3:8e492eacd346 160 }
cmulady 4:8fdff78c13c8 161
cmulady 3:8e492eacd346 162 }
cmulady 3:8e492eacd346 163
cmulady 13:17fd813ef7c9 164 char CheckPacket(char new_data, char* packet_buffer, char* data, int data_len)
cmulady 6:5563f0026858 165 {
cmulady 13:17fd813ef7c9 166 //Requires a packet buffer of length 'data_len'+3.
cmulady 9:3e4e9d6a8ad8 167 //Shifts data and checks each 'set' for a valid packet.
cmulady 9:3e4e9d6a8ad8 168 //Once a valid packet is receievd, the data buffer is updated with new values.
cmulady 13:17fd813ef7c9 169 //returns success(0) or failure(error code)
cmulady 13:17fd813ef7c9 170
cmulady 9:3e4e9d6a8ad8 171
cmulady 9:3e4e9d6a8ad8 172 char check=0x0;
cmulady 9:3e4e9d6a8ad8 173 //Shift All data 1 cell over
cmulady 13:17fd813ef7c9 174 for(int i=0; i<data_len+2; i++) {
cmulady 9:3e4e9d6a8ad8 175 packet_buffer[i] = packet_buffer[i+1];
cmulady 9:3e4e9d6a8ad8 176 }
cmulady 13:17fd813ef7c9 177 packet_buffer[data_len+2] = new_data;
cmulady 9:3e4e9d6a8ad8 178
cmulady 9:3e4e9d6a8ad8 179 //check for valid packet
cmulady 13:17fd813ef7c9 180 if(packet_buffer[0]!=ASCII_STX)
cmulady 9:3e4e9d6a8ad8 181 return 0x1; //bad start byte
cmulady 13:17fd813ef7c9 182 if(packet_buffer[data_len+2]!=ASCII_ETX)
cmulady 13:17fd813ef7c9 183 return 0x2; //bad end byte
cmulady 9:3e4e9d6a8ad8 184
cmulady 9:3e4e9d6a8ad8 185 for(int i=1; i<data_len+1; i++) {
cmulady 9:3e4e9d6a8ad8 186 check^=packet_buffer[i];
cmulady 9:3e4e9d6a8ad8 187 }
cmulady 15:21c512907cf6 188 if(check!=packet_buffer[data_len+1]) {
cmulady 15:21c512907cf6 189 return 0x3; //bad checksum
cmulady 9:3e4e9d6a8ad8 190 }
cmulady 13:17fd813ef7c9 191
cmulady 9:3e4e9d6a8ad8 192 return 0;
cmulady 9:3e4e9d6a8ad8 193 }
cmulady 9:3e4e9d6a8ad8 194
cmulady 13:17fd813ef7c9 195 void BlinkAlive(void const* arguments)
cmulady 13:17fd813ef7c9 196 {
cmulady 13:17fd813ef7c9 197 while(true) {
cmulady 13:17fd813ef7c9 198
cmulady 13:17fd813ef7c9 199 //Change LED1 state (debug)
cmulady 13:17fd813ef7c9 200 (led1==0.0)?led1=0.02:led1=0.0;
cmulady 13:17fd813ef7c9 201
cmulady 13:17fd813ef7c9 202 //Form a test packet and send it over IR transmitter
cmulady 13:17fd813ef7c9 203 irdatOUT[0] = 0xA5;
cmulady 13:17fd813ef7c9 204 irdatOUT[1] = ++irdata_out;
cmulady 13:17fd813ef7c9 205 irdatOUT[2] = ~(irdata_out*2);
cmulady 13:17fd813ef7c9 206 irdatOUT[3] = irdata_out*7+13;
cmulady 13:17fd813ef7c9 207 //MakePacket2(irdatOUT,4);
cmulady 16:bc0e213ba52d 208 ir_tx.MakePacket(irdatOUT,4);
cmulady 13:17fd813ef7c9 209
cmulady 13:17fd813ef7c9 210 //Roughly use to set rate of data packets per second
cmulady 16:bc0e213ba52d 211 Thread::wait(200);
cmulady 13:17fd813ef7c9 212 }
cmulady 13:17fd813ef7c9 213 }
cmulady 13:17fd813ef7c9 214
cmulady 13:17fd813ef7c9 215 void MakePacket2(char* data,int len)
cmulady 13:17fd813ef7c9 216 {
cmulady 13:17fd813ef7c9 217 /*char check =0x0;
cmulady 13:17fd813ef7c9 218 (*devicerx).putc(ASCII_STX);
cmulady 13:17fd813ef7c9 219 for(int i=0; i<len; i++) {
cmulady 13:17fd813ef7c9 220 check^=data[i];
cmulady 13:17fd813ef7c9 221 (*devicerx).putc(data[i]);
cmulady 13:17fd813ef7c9 222 }
cmulady 13:17fd813ef7c9 223 (*devicerx).putc(check);
cmulady 13:17fd813ef7c9 224 (*devicerx).putc(ASCII_ETX);*/
cmulady 13:17fd813ef7c9 225 }
cmulady 13:17fd813ef7c9 226
cmulady 13:17fd813ef7c9 227
cmulady 13:17fd813ef7c9 228
cmulady 12:9acca1dd0e8e 229 //Handle Reception of RX data (mail it to appropriate thread)
cmulady 14:68f7cefd7359 230 void ISR_UARTRX()
cmulady 7:c9ff6b5c8507 231 {
cmulady 12:9acca1dd0e8e 232 //get RX data (and prevent ISR from looping forever
cmulady 7:c9ff6b5c8507 233 uint32_t RBR = LPC_UART1->RBR;
cmulady 9:3e4e9d6a8ad8 234
cmulady 12:9acca1dd0e8e 235 //write letter and put in mailbox
cmulady 15:21c512907cf6 236 /*char* mail = rx_data_mailbox.alloc();
cmulady 10:4fcd5bdb9642 237 mail[0] = (char)RBR;
cmulady 15:21c512907cf6 238 rx_data_mailbox.put(mail);*/
cmulady 15:21c512907cf6 239
cmulady 15:21c512907cf6 240 /*char* mail = ir_tx.ir_data_mailbox.alloc();
cmulady 15:21c512907cf6 241 mail[0] = (char)RBR;
cmulady 15:21c512907cf6 242 ir_tx.ir_data_mailbox.put(mail);*/
cmulady 16:bc0e213ba52d 243
cmulady 16:bc0e213ba52d 244 ir_tx.isr(RBR);
cmulady 10:4fcd5bdb9642 245
cmulady 12:9acca1dd0e8e 246 //Let message handler run
cmulady 15:21c512907cf6 247 //(*threadptr_irstuff).signal_set(0x1);
cmulady 8:54dd4a3d0de9 248
cmulady 7:c9ff6b5c8507 249 }
cmulady 7:c9ff6b5c8507 250