Justin Howard
Example of how to use an Ada Fruit RGB LCD with the Ada Fruit RGB LCD Shield Library
Dependencies: AdaFruit_RGBLCDShield MCP23017 mbed RTclock
Fork of
MCP_test
by 
Wim Huiskamp
Updated the Adafruit RGB LCD Shield test app with a module system.
It pulls in RTclock which is another library I did for controlling the DS1307 RTC in a sane way (marries stdlib time and the RTC together cleanly). You don't need an RTC to run the example, it'll just use stdlib time instead. This class also maps RTC to system time, so if you loose the RTC the mbed will free run.
Four modules are defined in the modules folder plus the module base class. These examples provide:
- title menu item
- time menu item (updates automatically)
- date menu item
- fake temp menu item
Press select to switch modes: menu->cursor->change
Menu switches menu items going up/down. Cursor allows you to move around editable fields using the cursor keys / marker. Change allows you to move left/right on a particular line and change values by using up/down on an item with the blink box.
Custom fonts are defined for UI arrows and degree character.
If you want a menu item to update over time then you need to implement the canRefresh() member function in any child module you derive from class Module. Make it return true to receive update requests in your show() member function. Date and time both check when refreshing to see if anything has changed, then update.
main() registers a table of modules with the MenuManager. Others can be added easily by creating children derived from the Module base class..
Depending on what you want to do you may need to adjust the loop wait time in MenuManager::loop(). If you don't balance this based on work you need to do then the key presses may get a little lively. I may adjust the key checking to be fixed to 200ms regardless of loop wait time, however the catch there is that you'll consume more power the more loops you do so the wait is still important.
Happy coding!
Diff: LCD2004/lcd2004.h
- Revision:
- 25:24654d08a99a
diff -r e67c825ec6d8 -r 24654d08a99a LCD2004/lcd2004.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/LCD2004/lcd2004.h Thu Oct 09 08:03:20 2014 +0000
@@ -0,0 +1,34 @@
+#ifndef __LCD2004_H__
+#define __LCD2004_H__
+
+#include "lcd.h"
+
+class LCD2004
+ : public LCD
+{
+public:
+ LCD2004(I2C & in_cI2C);
+ virtual int _putc(int c);
+
+ virtual uint8_t columns();
+ virtual void clear();
+ virtual void createChar(uint8_t location, uint8_t charmap[]);
+ virtual void home();
+ virtual uint8_t rows();
+ virtual void setCursor(uint8_t in_nX, uint8_t in_nY);
+ virtual void showBlink(bool in_bShow);
+ virtual void showCursor(bool in_bShow);
+ virtual void showDisplay(bool in_bShow);
+
+protected:
+ uint8_t read_reg(void);
+ uint8_t remap(uint8_t in_nValue);
+ void setDisplayControl(uint8_t in_nReg, bool in_bEnable);
+ void write_data(uint8_t in_nReg, uint8_t in_nValue);
+ void write_reg(uint8_t in_nValue);
+
+protected:
+ uint8_t m_nDisplayControl;
+};
+
+#endif // __LCD2004_H__