Revision 1:30e3abd959e2, committed 2012-09-27

Comitter:

nelsonoliveira

Date:

Thu Sep 27 20:28:05 2012 +0000

Parent:

0:329ba18c901d

Commit message:

Now with options for baud rate and custom splash

Changed in this revision

--- a/SparkfunSerialLCD.cpp	Mon Jan 10 21:23:15 2011 +0000
+++ b/SparkfunSerialLCD.cpp	Thu Sep 27 20:28:05 2012 +0000
@@ -9,10 +9,15 @@
 #include "SparkfunSerialLCD.h"
 #include "mbed.h"
 #include "stdarg.h"
-
- SparkfunSerialLCD::SparkfunSerialLCD(PinName tx): _lcd(tx,NC)
+   
+SparkfunSerialLCD::SparkfunSerialLCD(PinName tx, int baud, bool clrError): _lcd(tx,NC)
 {
-    wait_ms(500);   //Gives the serial module time to wakeup
+    if (clrError)
+    {
+        SendCmd(Target::Module, Cmd::ResetUnit);
+    }
+    wait(1);        //Gives the serial module time to wakeup
+    setBaud(baud);  //Changes the baud
     cls();          //Clears the screen
     Backlight(29);  //Default backlight
 }
@@ -52,3 +57,40 @@
 {
     SendCmd(Target::Module, bright+128);    //Adjusts bright to conform to serial module needs and sends instruction
 }
+
+void SparkfunSerialLCD::setSplash()
+{
+    SendCmd(Target::Module, Cmd::SetSplash);//Sets the current text as the splash screen
+}
+
+void SparkfunSerialLCD::setBaud(int baud)
+{
+    //Changes baud, defaults to 9600 in case of invalid value
+    switch (baud)
+    {
+        case 2400:
+            SendCmd(Target::Module, Cmd::b2400);
+            _lcd.baud(baud);
+            break;
+        case 4800:
+            SendCmd(Target::Module, Cmd::b4800);
+            _lcd.baud(baud);
+            break;
+        case 14400:
+            SendCmd(Target::Module, Cmd::b14400);
+            _lcd.baud(baud);
+            break;
+        case 19200:
+            SendCmd(Target::Module, Cmd::b19200);
+            _lcd.baud(baud);
+            break;
+        case 38400:
+            SendCmd(Target::Module, Cmd::b38400);
+            _lcd.baud(baud);
+            break;
+        default:
+            SendCmd(Target::Module, Cmd::b9600);
+            _lcd.baud(9600);
+            break;
+    }
+}
\ No newline at end of file

--- a/SparkfunSerialLCD.h	Mon Jan 10 21:23:15 2011 +0000
+++ b/SparkfunSerialLCD.h	Thu Sep 27 20:28:05 2012 +0000
@@ -13,12 +13,17 @@
 
 class SparkfunSerialLCD
 {
-public:
+private:
     //Direct access to the serial connection
     Serial _lcd;
-    
-    //Constructor only asks for mbed TX pin, choose from list -> {9,13,28}
-    SparkfunSerialLCD(PinName tx);
+public:
+    /**
+     * Constructor:
+     * tx           TX pin (choose from list -> {9,13,28}) and an optional baud rate
+     * baud         The baud rate for the LCD (optional, defaults to 9600)
+     * clsError     Resets the LCD to defaults (must use immediatly after power on)
+     */
+    SparkfunSerialLCD(PinName tx, int baud = 9600, bool clrError = false);
 
     //basic functions
     void SendCmd(int target, int cmd);      //Send special commands (see tables below)
@@ -26,6 +31,8 @@
     void print(const char *msg);            //Sends message to screen
     void printf(const char *msg, ...);      //Sends formated message to screen
     void cls();                             //Clear screen
+    void setSplash();                       //Sets the current text as the splash screen
+    void setBaud(int baud);                 //Changes the LCD baud rate, defaults to 9600 in case of invalid value
 
     //Adjusts Backlight -> bright: 0 to 29 (darker to brighter)
     void Backlight(int bright);
@@ -47,6 +54,14 @@
             BlinkingCursorOn    = 0x0D,
             BlinkingCursorOff   = 0x0C,
             CursorPos           = 0x80,
+            ResetUnit           = 0x11,
+            SetSplash           = 0x0A,
+            b2400               = 0x0B, //These lines stating with "b" are the baud rates
+            b4800               = 0x0C,
+            b9600               = 0x0D,
+            b14400              = 0x0E,
+            b19200              = 0x0F,
+            b38400              = 0x10
         };
     };
     

--- a/example.cpp	Mon Jan 10 21:23:15 2011 +0000
+++ b/example.cpp	Thu Sep 27 20:28:05 2012 +0000
@@ -10,7 +10,7 @@
 #include "SparkfunSerialLCD.h"
 
 //Declares a SparkFun Serial LCD on mbed pin 13
-SparkfunSerialLCD LCD(p13);
+SparkfunSerialLCD LCD(p13, 38400, true);
 
 int main()
 {
@@ -21,7 +21,7 @@
     LCD.print("LCD");
     
     wait(2);                //Leaves message on screen for 2 seconds
-
+    
     while (1)               //Eternal loop
     {
         LCD.cls();                      //Clear screen