Diff: main.cpp

Revision:

12:9acca1dd0e8e

Parent:

10:4fcd5bdb9642

Child:

13:17fd813ef7c9

--- a/main.cpp	Fri Oct 05 21:56:33 2012 +0000
+++ b/main.cpp	Fri Oct 05 22:13:55 2012 +0000
@@ -2,10 +2,8 @@
 #include "rtos.h"
 #include "NokiaLCD.h"
 #include "XMIT_IR.h"
-#include "queue.h"
 
 #define FPS 5
-#define UART_TIMEOUT 500
 
 /****************************************
 |=======================================|
@@ -14,7 +12,9 @@
 |   -p7 : CLK on Sparkfun Nokia LCD     |
 |   -p8 : CS  on Sparkfun Nokia LCD     |
 |   -p9 : RST on Sparkfun Nokia LCD     |
-|   -p22: GND on Sparkfun IR Xmtr       |
+|   -p21: CTL on Sparkfun IR Xmitter    |
+|   -p14: OUT on Sparkfun IR Rcvr       |
+|   -p13: GND on Sparkfun IR Xmitter    |
 |=======================================|
 ****************************************/
 
@@ -29,15 +29,12 @@
 PwmOut IRLED_mod(p21);
 
 //Global Vars
-char buffer[32];
-unsigned char irdata_out=0;
-unsigned char irdata_in=0;
+char text_buffer[32];
 char irdatOUT[10];
 char irdatIN[10];
+char irdata_out=0;
 char error_code=0;
 Thread* threadptr_irstuff;
-DataQueue RX_DataBuffer(1,100);
-bool rx_data_available = false;
 char packet_buff[10];
 Mail<char,64> rx_data_mailbox;
 
@@ -46,10 +43,8 @@
 void UpdateLCD(void const* arguments);
 void IRStuff(void const* arguments);
 void MakePacket(char* data,int len);
-char CheckPacket(char* data, int data_size);
 void ISR_UARTRX(void);
-void DoNothing(void const* arguments);
-char  CheckPacket2(char new_data, char* packet_buffer, char* data, int data_len);
+char CheckPacket(char new_data, char* packet_buffer, char* data, int data_len);
 
 
 int main()
@@ -73,16 +68,17 @@
     //Variable Init
     for(int i=0; i<10; i++) packet_buff[i]=0;
 
-    //Thread init
+    //Threads init
     Thread thread_blinkalive(BlinkAlive);
     Thread thread_updatelcd(UpdateLCD);
     Thread thread_irstuff(IRStuff);
-    Thread thread_donothing(DoNothing);
     threadptr_irstuff = &thread_irstuff;
 
 
 
     while(1) {
+    
+        //Use main loop to set LCD framerate
         thread_updatelcd.signal_set(0x1);
         Thread::wait(1000/FPS);
 
@@ -92,15 +88,17 @@
 void UpdateLCD(void const* arguments)
 {
     while(true) {
+    
+        //Start flash LED
         led2 = 1;
+        
+        //Write debug text to screen
         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);
-
+        strftime(text_buffer, 32, "%I:%M:%S %p\n", localtime(&seconds));
+        lcd.printf("%s", text_buffer);
         lcd.locate(0,4);
         lcd.printf("IR_OUT=0x%02X,0x%02X", irdatOUT[0],irdatOUT[1]);
         lcd.locate(0,5);
@@ -108,10 +106,9 @@
         lcd.locate(0,6);
         lcd.printf("Error= 0x%02X", error_code);
 
-
-
+        //End - flash LED
+        led2 = 0;
         //End - Sleep thread
-        led2 = 0;
         Thread::signal_wait(0x1);
     }
 }
@@ -119,27 +116,8 @@
 void IRStuff(void const* arguments)
 {
     while(true) {
-        //error_code = CheckPacket(irdatIN,2);
 
-
-
-        //pc.printf("UART_STATE: 0x%08X",*((unsigned int *)0x400FC0C4));
-
-        /*if(rx_data_available) {
-            if(irdatIN[0]==0x2) pc.printf("\n");
-            pc.printf("0x%02X.",irdatIN[0]);
-            //pc.printf("0x%02X.",irdatIN[1]);
-            //pc.printf("0x%02X.",irdatIN[2]);
-            //pc.printf("0x%02X.\n",irdatIN[3]);
-            rx_data_available = false;
-        }*/
-
-
-        /* while(device.readable()) {
-             error_code = CheckPacket2(device.getc(), packet_buff, irdatOUT, 2);
-             pc.printf("  = 0x%02X.\n",error_code);
-         }*/
-
+        //If data available - Print data directly to USB port (for debug)
         osEvent evt = rx_data_mailbox.get();
         while(evt.status == osEventMail) {
             char* mail = (char*)evt.value.p;
@@ -149,21 +127,8 @@
             evt = rx_data_mailbox.get();
         }
         
-
-
-
-        //pc.printf("\n\nE=0x%02X\n\n",error_code);
-        /*if(error_code==0x0) {
-            pc.printf("0x%02X.",irdatIN[1]);
-            Thread::wait(10);
-        } else if(error_code==0x2) {
-            pc.printf("!");
-            Thread::wait(10);
-        } else {
-            Thread::wait(10);
-        }*/
-        //Thread::signal_wait(0x1);
-        Thread::wait(5);
+        //Do not return until we have more data
+        Thread::signal_wait(0x1);
     }
 
 }
@@ -171,17 +136,21 @@
 void BlinkAlive(void const* arguments)
 {
     while(true) {
+    
+        //Change LED1 state (debug)
         led1 = !led1;
 
+        //Form a test packet and send it over IR transmitter
         irdatOUT[0] = 0xA5;
         irdatOUT[1] = ++irdata_out;
         MakePacket(irdatOUT,2);
-        //pc.printf("UART_STATE: 0x%08X",*((unsigned int *)0x40010014));
 
+        //Roughly use to set rate of data packets per second
         Thread::wait(20);
     }
 }
 
+//TURN THIS INTO CLASS FUNCTION
 void MakePacket(char* data,int len)
 {
     //pc.printf("\nMaking Packet:\n\t");
@@ -198,59 +167,8 @@
     //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) {
-        if(tempdata==0xFF) pc.printf("found bad data: 0x%02X",tempdata);
-        pc.printf("UART_STATE: 0x%08X",*((unsigned int *)0x40010014));
-        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;
-
-}
-
-char  CheckPacket2(char new_data, char* packet_buffer, char* data, int data_len)
+//TURN THIS INTO CLASS FUNCTION
+char  CheckPacket(char new_data, char* packet_buffer, char* data, int data_len)
 //returns success(0) or failure(error code)
 {
     //Requires a packet buffer of length 'data_len'+2.
@@ -281,40 +199,19 @@
     return 0;
 }
 
-void DoNothing(void const* arguments)
-{
-    while(true) {
-        Thread::signal_wait(0x1);
-    }
-}
-
+//Handle Reception of RX data (mail it to appropriate thread)
 void ISR_UARTRX(void)
 {
+    //get RX data (and prevent ISR from looping forever
     uint32_t RBR = LPC_UART1->RBR;
 
-
-    //irdatIN[0] = (char)RBR;
-
+    //write letter and put in mailbox
     char* mail = rx_data_mailbox.alloc();
     mail[0] = (char)RBR;
     rx_data_mailbox.put(mail);
 
-    /*if(device.readable())
-        irdatIN[1] = (char) LPC_UART1->RBR;
-    if(device.readable())
-        irdatIN[2] = (char) LPC_UART1->RBR;
-    if(device.readable())
-        irdatIN[3] = (char) LPC_UART1->RBR;
-        */
-
-    rx_data_available = true;
+    //Let message handler run
     (*threadptr_irstuff).signal_set(0x1);
 
-
-    /*while(device.readable()) {
-        char data = device.getc();
-        //pc.printf("*");
-    }*/
-
 }