Curtis Mulady
/
4180_mP_WirelessPong_revA
miniProject-Wireless Pong
main.cpp
- Committer:
- cmulady
- Date:
- 2012-10-04
- Revision:
- 6:5563f0026858
- Parent:
- 5:2e08cc167fff
- Child:
- 7:c9ff6b5c8507
File content as of revision 6:5563f0026858:
#include "mbed.h" #include "rtos.h" #include "NokiaLCD.h" #include "XMIT_IR.h" #define FPS 5 #define UART_TIMEOUT 500 /**************************************** |=======================================| |MBED Connections: | | -p5 : DIO on Sparkfun Nokia LCD | | -p7 : CLK on Sparkfun Nokia LCD | | -p8 : CS on Sparkfun Nokia LCD | | -p9 : RST on Sparkfun Nokia LCD | | -p22: GND on Sparkfun IR Xmtr | |=======================================| ****************************************/ //Pin Setup DigitalOut led1(LED1); DigitalOut led2(LED2); DigitalOut led3(LED3); DigitalOut led4(LED4); NokiaLCD lcd(p5, p7, p8, p9, NokiaLCD::LCD6610); // mosi, sclk, cs, rst, type Serial device(p13, p14); // tx, rx Serial pc(USBTX,USBRX); PwmOut IRLED_mod(p21); //Global Vars char buffer[32]; unsigned char irdata_out=0; unsigned char irdata_in=0; char irdatOUT[10]; char irdatIN[10]; char error_code=0; //Function Prototypes void BlinkAlive(void const* arguments); void UpdateLCD(void const* arguments); void IRStuff(void const* arguments); void MakePacket(char* data,int len); char CheckPacket(char* data, int data_size); int main() { //LCD init lcd.background(0x000000); //PWM init IRLED_mod.period(1.0/38000.0); //38kHz Modulation Freq IRLED_mod = 0.5; //pulse width = 50% //Serial init device.baud(2400); //PC serial init pc.baud(19200); //Thread init Thread thread_blinkalive(BlinkAlive); Thread thread_updatelcd(UpdateLCD); Thread thread_irstuff(IRStuff); while(1) { thread_updatelcd.signal_set(0x1); Thread::wait(1000/FPS); } } void UpdateLCD(void const* arguments) { /*while(true) { led2 = 1; lcd.locate(0,1); lcd.printf("Debug:"); lcd.locate(0,3); time_t seconds = time(NULL); strftime(buffer, 32, "%I:%M:%S %p\n", localtime(&seconds)); lcd.printf("%s", buffer); lcd.locate(0,4); lcd.printf("IR_OUT=0x%02X,0x%02X", irdatOUT[0],irdatOUT[1]); lcd.locate(0,5); lcd.printf("IR_IN= 0x%02X,0x%02X", irdatIN[0],irdatIN[1]); lcd.locate(0,6); lcd.printf("Error= 0x%02X", error_code); //End - Sleep thread led2 = 0; Thread::signal_wait(0x1); }*/ } void IRStuff(void const* arguments) { while(true) { //error_code = CheckPacket(irdatIN,2); while(device.readable()) { char tempdata = device.getc(); if(tempdata==0x02) pc.printf("\n"); pc.printf("0x%02X.",tempdata); } //pc.printf("\n\nERROR=0x%02X\n\n",error_code); Thread::wait(3000); } } void BlinkAlive(void const* arguments) { while(true) { led1 = !led1; irdatOUT[0] = 0xA5; irdatOUT[1] = ++irdata_out; MakePacket(irdatOUT,2); Thread::wait(20); } } void MakePacket(char* data,int len) { //pc.printf("\nMaking Packet:\n\t"); char check =0x0; device.putc(0x02); //pc.printf("0x%02X.",0x02); for(int i=0; i<len; i++) { check^=data[i]; device.putc(data[i]); //pc.printf("0x%02X.",data[i]); } device.putc(check); //pc.printf("0x%02X.",check); //pc.printf("\nDone making packet.\n"); } char CheckPacket(char* data, int data_size) //returns success(0) or failure(error code) { Timer t; t.reset(); t.start(); char tempdata=0x0; char check=0x0; pc.printf("\nChecking Packet\n\t"); //Data available if(!device.readable()) { pc.printf("no data"); return 0x4; //no data } while(!device.readable()); //while(!device.readable() && t.read_ms()<=UART_TIMEOUT); //if(t.read_ms()>=UART_TIMEOUT) // return 0x3; //timeout error tempdata = device.getc(); //STX recieved if(tempdata!=0x02) { pc.printf("found bad data: 0x%02X",tempdata); if(tempdata==0xFF) device.getc(); //flush return 0x1; //bad start byte } //Get Data for(int i=0; i<data_size; i++) { while(!device.readable()); //while(!device.readable() && t.read_ms()<=UART_TIMEOUT); //if(t.read_ms()>=UART_TIMEOUT) // return 0x3; //timeout error data[i] = device.getc(); check ^= data[i]; } //Get Checksum while(!device.readable()); //while(!device.readable() && t.read_ms()<=UART_TIMEOUT); //if(t.read_ms()>=UART_TIMEOUT) // return 0x3; //timeout error tempdata = device.getc(); if(tempdata!=check) return 0x2; //bad checksum return 0; }