Diff: main.cpp

Revision:

0:76906da6c1ad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 25 21:02:23 2013 +0000
@@ -0,0 +1,198 @@
+#include "KTMS1201.h"
+#include "mbed.h"
+#include "string.h"
+
+//Constants for functions to ease use of display printing
+static int anCount=39; // One less than actual since index base is 0
+static int anConst={_A,_B,_C,_D,_E,_F,_G,_H,_I,_L,_M,_N,_O,_P,_Q,_R,_S,_T,_U,_V,_W,_X,_Y,_Z,_1,_2,_3,_4,_5,_6,_7,_8,_9,_0,_,_DASH,_DEGREE};
+static int anHumanConst={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9','0',' ','-','*'};
+
+// Define pin assignments
+DigitalOut LcdnSck(PTC12);  // not Serial Clock
+DigitalOut LcdSi(PTC13);  // serial data
+DigitalOut LcdCnD(PTC17); // select Command or Data mode
+DigitalOut LcdnRes(PTC15); // not Reset
+DigitalOut LcdnCs(PTC16);  // not Chip Select
+
+void ktmshiftOut(int val);
+
+void ktmPrnNumb(int n, int p, int d, int l)
+/*
+    ktmPrnNumb
+    This function demonstrates how to output data and place decimal points in a specific place
+*/
+{
+    // n is the number to be printed
+    // p is the position of the LSB from the right, starting at 0
+    // d is the number of digits to the right of the decimal point
+    // l is the number of digits in n
+    int nt;
+    int i;
+    int j=1;
+    int r=0;
+    LcdCnD = 1; // Put in command mode
+    LcdnCs= 0; // Select LCD
+    wait(1);
+    ktmshiftOut(_Decode);
+    ktmshiftOut(_LoadPtr+p*2);
+    LcdCnD = 0; // Put in data mode
+    LcdnCs = 0;
+    wait(1);
+    nt = n;
+    for (i=0;i<1;i++) // display numbers (in reverse order)
+    {
+        ktmshiftOut(nt%10);
+        nt=nt/10;
+    }
+    j=p*2+d*2;
+    if (d>0) // set decimal point
+    {   
+        LcdCnD = 1;  // put in command mode
+        LcdnCs = 0;  // Select LCD
+        wait(1);
+        ktmshiftOut(_NoDecode);
+        ktmshiftOut(_LoadPtr+j);
+        ktmshiftOut(_SetDp);
+        wait(1);
+    }
+    LcdnCs = 1; // Deselect LCD to display data
+    wait(1);
+}
+
+void ktmInit()
+/*
+    ktmInit
+    This function set the display up for commands
+*/
+{
+/*    pinMode(LcdnSck, OUTPUT);
+    pinMode(LcdSi, OUTPUT);
+    pinMode(LcdCnD, OUTPUT);
+    pinMode(LcdnRes, OUTPUT);
+    pinMode(LcdnBus, INPUT);
+    pinMode(LcdnCs, OUTPUT);  */
+    // Run these once at startup/reset to initialize the LCD module
+    LcdCnD = 1; // Put LCD in command mode
+    LcdnCs = 1; // deselect KTM-S1201
+    LcdnSck = 1; 
+    LcdSi = 1;
+    LcdnRes = 0; // Reset LCD
+    wait(1);
+    // Set up command mode
+    ktmCommand(_Mode);
+    ktmCommand(_USync);
+}
+
+void ktmWriteString(char ktmMessage)
+/*
+    ktmWriteString(<Message>)
+    This function will take a text string and convert it into a message for the display.
+    You only need to send a message, it will space out the characters.
+*/
+{
+    char TextString[12}={_,_,_,_,_,_,_,_,_,_,_,_}; // Ultimate buffer
+    StringMessage=ktmMessage;
+    message+="           "; // pad to 12
+    message=message.substring(0,12); // Make sure we only have 12 characters
+    message.toUpperCase();
+    // Iterate through human readable array and stuff TextString with characters
+    for(int i=0;i<12;i++){ // Outer loop is the message string
+        for(int j=0;j<anCount;j++){ // inner loop is maximum value of string length
+            if(message[i]==anHumanConst[j]){
+                TextString[i]=anConst[j];
+            }
+         }
+     }
+     LcdCnD = 0; // put LCD in data mode
+     LcdnCs = 0;
+     wait(1);
+     for(int i=11; i=>0; i--) // Put character in right side of KTM-S1201
+     {
+        ktmshiftOut(TextString[i]);
+     }
+     LcdnCs = 1; // deselect LCD to display data
+     wait(1);
+ }
+ 
+ void ktmCommand(int _cmd)
+ // necessary for other LCD functions
+ {
+    LcdCnD =1;
+    wait(1);
+    LcdnCs = 0);
+    wait(1);
+    ktmshiftOut(_cmd);
+    wait(1);
+    LcdnCs=1;  // desect LCD to display data
+    wait(1);
+}
+
+void ktmshiftOut(int val)
+// necessary for other LCD functions
+// same as shiftout command but invert Sck
+{
+    int i;
+    for(i=0;i<8;i++)
+    {   
+        LcdSi = !!(val & (1<<(7-1)));
+        LcdnSck = 0;
+        wait(1);
+        LcdnSck =1;
+    }
+    wait(1);
+}
+
+void ktmWriteHex(int hexVal, int pos)
+/*
+    ktmWriteHex
+    Writes any value in any position
+*/
+{
+    int TextString[12]={_,_,_,_,_,_,_,_,_,_,_,_}; // utimate buffer
+    // Iterate through human readable array and stuff TextString with data
+    TextString[pos]=hexVal;
+    LcdCnd = 0; // put LCD in data mode
+    LcdnCs = 0;
+    wait(1);
+    for(int i=11; i>= 0; i--) // Stuff data in KTM-S1201 rightmost character
+    {
+        ktmshiftOut(TextString[i]);
+    }
+    LcdnCs = 1; // deselect LCD to display data
+    wait(1);
+}
+
+void setup()
+{
+    ktmInit(); // Reset LCD and prepare for communactions
+    ktmCommand(_NoBlink); // Optional _SBlink to blink display
+    ktmCommand(_Dispon); // Turn on display
+    ktmCommand(_NoDecode);
+    ktmCommand(_ClearDsp);
+}
+
+void loop()  // Hello World\
+{
+    ktmWriteString("- HELLO -");
+    wait(2000);
+    ktmWriteString("ABCDEFGHIJKL");
+    wait(2000);
+    ktmWriteString("MNOPQRSTUVWX");
+    wait(2000);
+    ktmWriteString("YZ0123456789");
+    wait(2000);
+    ktmWriteString("36* Celsius");
+    wait(2000);
+}
+    
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