Diff: main.cpp

Revision:

0:c8dd8b2c6942

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 12 19:17:47 2015 +0000
@@ -0,0 +1,201 @@
+#include "mbed.h"
+
+#include "./Parser.h"
+#include "./terminal.h"
+
+#define DEBUG_CMD_PROCESS
+
+#define LED_ON   1
+#define LED_OFF  0
+DigitalOut AlarmLED(LED1);
+
+
+#define RXBUFFERSIZE    128
+#define RXBUFFERMASK    0x7F
+char receiveBuffer[RXBUFFERSIZE];
+unsigned char insertPointRxBuffer;
+
+Serial pc(USBTX, USBRX);            // tx, rx 
+void characterReceivedFromPC();
+char globalStartofSentence;
+bool globalSentenceFromPCReady;
+//extern    char *commandTokens[20];
+
+
+
+
+// initializeRingBufferAndTokenArray: -----------------------------------------
+//
+//
+//-----------------------------------------------------------------------------
+void initializeRingBufferAndTokenArray()
+{
+    insertPointRxBuffer = 0;
+    globalStartofSentence = 0;
+
+    globalSentenceFromPCReady = false;
+
+    //make sure the array is full of address 0x000's
+    for (int i = 0; i< 20; i++) {
+        commandTokens[i] = NULL;
+        }
+}//eo initializeRingBufferAndTokenArray:: =====================================
+
+
+
+
+// initializeSystem: ----------------------------------------------------------
+//
+//
+//-----------------------------------------------------------------------------
+
+void initializeSystem(void)
+{
+//    lcd.printf("Hi Brad\n");
+//    lcd.locate(0,1);
+//    lcd.printf("row 2\n");
+ 
+    initializeRingBufferAndTokenArray();
+    initializePCTerminal(&pc);
+    clearScreen();
+    
+    locateCursor(0, 2);
+    drawBox(30, 10);
+    pc.attach(characterReceivedFromPC);  // set calback function to be called when a character is received
+    
+    AlarmLED = LED_ON;
+    wait(0.2);  //wait .2 seconds
+    AlarmLED = LED_OFF;
+    wait(0.2);  //wait .2 seconds
+    AlarmLED = LED_ON;
+    wait(0.2);  //wait .2 seconds
+    AlarmLED = LED_OFF;
+}//eo initializeSystem:: ======================================================
+
+
+
+
+// characterReceivedFromPC: ---------------------------------------------------
+//
+//
+//-----------------------------------------------------------------------------
+
+void characterReceivedFromPC()
+{
+    static unsigned char StartofNextSentence = 0;
+    while(pc.readable()) 
+        {
+        receiveBuffer[insertPointRxBuffer] = pc.getc();
+        if( receiveBuffer[insertPointRxBuffer] == '$' )
+            {
+            StartofNextSentence = insertPointRxBuffer;
+            }
+        if( receiveBuffer[insertPointRxBuffer] == '\r' ) 
+            {
+            receiveBuffer[insertPointRxBuffer] = '\0';
+
+            //makeSentence available to main loop
+            globalStartofSentence = StartofNextSentence;
+            globalSentenceFromPCReady = true;
+            printf("\n\rsentence rec %s\n\r", &receiveBuffer[StartofNextSentence]);
+            }
+        insertPointRxBuffer = (insertPointRxBuffer + 1) & RXBUFFERMASK;
+        }
+}//eo characterReceivedFromPC:: ===============================================
+
+
+
+// processCommandMessage: -----------------------------------------------------
+// transfer one sentence from incoming receive buffer into a command buffer for parsing
+//
+// 
+//-----------------------------------------------------------------------------
+
+void processCommandMessage()
+{
+    unsigned char fp = globalStartofSentence;  // initalize fetch point from receive buffer
+    unsigned char ip = 0;                // initilize insert point into command buffer
+    
+    // copy the sentence (which contains a command) from the ring buffer (named receiveBuffer) 
+    // into a normal linear array named commandBuffer
+    char commandBuffer[60];
+    #ifdef DEBUG_CMD_PROCESS
+    printf("\n\r^^Start of sentence:%d\n\r",  fp);
+    #endif
+    while(receiveBuffer[fp] != '\0') 
+        {
+        #ifdef DEBUG_CMD_PROCESS
+        if(pc.writeable()) pc.putc(receiveBuffer[fp]);
+        #endif
+        commandBuffer[ip] = receiveBuffer[fp];
+        ip++;
+        fp = (fp+1) & RXBUFFERMASK;
+        }
+    commandBuffer[ip] = '\0';
+    
+    parseCommandSentence(commandBuffer);
+
+    #ifdef DEBUG_CMD_PROCESS
+    // print out the tokens back to the terminal
+    {
+    int  i = 0;  
+    while (strcmp(commandTokens[i],"END OF TOKENS" )) {
+        pc.printf("$token %i: %s\n\r",i, commandTokens[i]);
+        i++;     
+        }
+    }
+    #endif
+        
+    if(strcmp(commandTokens[0],"$ST" )== 0) 
+        {
+        long newtime = atol(commandTokens[1]); 
+        #ifdef DEBUG_CMD_PROCESS
+        pc.printf("Setting time to: %l \n\r ", newtime);
+        #endif
+        set_time( newtime); 
+        //int limitValue = atoi(commandTokens[3]);
+        //if( *commandTokens[2] == 'U') setUpperLimitForChannel(channel, limitValue);   
+        //if( *commandTokens[2] == 'L') setLowerLimitForChannel(channel, limitValue);                
+        }
+}//eo processCommandMessage:: =================================================
+
+
+
+// main: ----------------------------------------------------------------------
+//
+//
+//-----------------------------------------------------------------------------
+
+int main() {
+     set_time(1256729737);
+    initializeSystem();
+    
+    while(1) 
+        {//so infinite loop ...................................................
+        if( globalSentenceFromPCReady == true ) 
+            {
+            processCommandMessage();
+            globalSentenceFromPCReady = false;
+            }
+        
+        time_t seconds = time(NULL);
+        
+        printf("Time as seconds since January 1, 1970 = %d\n", seconds);
+        
+        printf("Time as a basic string = %s", ctime(&seconds));
+ 
+        char buffer[32];
+        strftime(buffer, 32, "%I:%M %p\n", localtime(&seconds));
+        printf("Time as a custom formatted string = %s", buffer);
+        
+        
+       
+        AlarmLED = LED_OFF;
+        wait(10);
+        AlarmLED = LED_ON;
+        wait(1);
+        }//eo infinite loop :::::::::::::::::::::::::::::::::::::::::::::::::::
+        
+}//eo main ====================================================================
+
+ 
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