Daniel Worrall
6 x 7 segment display library for PCA9637 driven breakout board
Dependents: FTSE100 InternetDispBoB digitalThermometer Counter ... more
Revision 9:44de04d410df, committed 2011-06-30
- Comitter:
- d_worrall
- Date:
- Thu Jun 30 15:03:18 2011 +0000
- Parent:
- 8:a875c4229c57
- Child:
- 10:1fda6b0ee3bc
- Commit message:
- version5
Changed in this revision
| dispBoB.cpp | Show annotated file Show diff for this revision Revisions of this file |
| dispBoB.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/dispBoB.cpp Wed Jun 29 14:08:42 2011 +0000
+++ b/dispBoB.cpp Thu Jun 30 15:03:18 2011 +0000
@@ -6,13 +6,11 @@
#include "PCA9635.h"
#include "dispBoB.h"
-Serial pc(USBTX, USBRX);
-
- static const char _loc[] = {0x02, 0x02, 0x04, 0x04, 0x10, 0x10, 0x12, 0x12};
- static const short _dispL[] = {
+ static const char loc[] = {0x02, 0x02, 0x04, 0x04, 0x10, 0x10, 0x12, 0x12};
+ static const short dispL[] = {
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
- 0x0000, 0x1008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0002, 0xC006, 0x600C, 0x0000, 0x0000, 0x0000, 0x0001, 0x0000, 0x0000,
+ 0x0000, 0x1008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0002, 0xC006, 0x600C, 0x0000, 0x0000, 0x0000, 0x0000, 0x1000, 0x0000,
0xE00E, 0x2008, 0xC00D, 0x600D, 0x200B, 0x6007, 0xE007, 0x200E, 0xE00F, 0x600F, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0xF001, 0xE003, 0xC001, 0xE009, 0xC007, 0x8007, 0x600F, 0xA003, 0x8000, 0x6008, 0xA007, 0x3008, 0xA005, 0xA001, 0xE001,
@@ -20,10 +18,10 @@
0x1000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0xC006, 0x0000, 0x600C, 0x0000, 0x0000
};
- static const short _dispR[] = {
+ static const short dispR[] = {
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
- 0x0000, 0x0180, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0020, 0x0C60, 0x06C0, 0x0000, 0x0000, 0x0000, 0x0010, 0x0000, 0x0000,
+ 0x0000, 0x0180, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0020, 0x0C60, 0x06C0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0100, 0x0000,
0x0EE0, 0x0280, 0x0CD0, 0x06D0, 0x02B0, 0x0670, 0x0E70, 0x02E0, 0x0EF0, 0x06F0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0F10, 0x0E30, 0x0C10, 0x0E90, 0x0C70, 0x0870, 0x06F0, 0x0A30, 0x0800, 0x0680, 0x0A70, 0x0380, 0x0A50, 0x0A10, 0x0E10,
@@ -31,13 +29,13 @@
0x0100, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0C60, 0x0000, 0x06C0, 0x0000, 0x0000
};
- short _element[8];
- short _pair[4];
+ short element[8];
+ short ppair[4];
string nullArray = " ";
dispBoB::dispBoB(PinName sda, PinName scl, PinName en): _pca(sda, scl), _en(en) {
_en = 0;
- _pca.init(_loc[5]);
+ _pca.init(loc[0]);
}
void dispBoB::cls(void){
@@ -45,47 +43,51 @@
locate(j);
_pca.bus(0x0000);
}
- _cursor = 0x10;
+ locate(0);
}
void dispBoB::locate(char pos){
- _pca.setAddress(_loc[pos]);
+ _pca.setAddress(loc[pos]);
_cursor = pos;
+ _pos = pos;
}
-void dispBoB::putc(char c){
+int dispBoB::_putc(int c){
+ if(_pos>5) return -1;
if(_cursor & 1){
- _element[_cursor] = _dispR[c];
+ element[_cursor] = dispR[toupper(c)];
} else {
- _element[_cursor] = _dispL[c];
+ element[_cursor] = dispL[toupper(c)];
}
int i = _cursor/2;
- _pair[i] = _element[(2*i)] + _element[(2*i)+1];
- _pca.bus(_pair[i]);
+ ppair[i] = element[(2*i)] + element[(2*i)+1];
+ _pca.bus(ppair[i]);
+
+ locate(_pos+1);
+
+ return c;
}
-void dispBoB::write(string str){
- for(int j = 5; j >= 0; j--){
- locate(j);
- putc(toupper(str[j]));
- }
+int dispBoB::_getc(){
+ return -1;
}
void dispBoB::scroll(string str, float speed){
char buffer[6];
-
- str.insert(0, nullArray);
+ str.insert(0, nullArray);
str.insert(str.length(), nullArray);
for(int k = 0; k < str.length(); k++){
- str.copy(buffer, 6, k);
- write(buffer);
- wait(speed);
+ str.copy(buffer, 6, k);
+ locate(0);
+ printf("%s", buffer);
+ wait(speed);
}
}
+//supply PCA9635 functionality to dispBoB class
void dispBoB::bus(short leds){
_pca.bus(leds);
}
--- a/dispBoB.h Wed Jun 29 14:08:42 2011 +0000
+++ b/dispBoB.h Thu Jun 30 15:03:18 2011 +0000
@@ -28,7 +28,7 @@
* }
* @endcode
*/
-class dispBoB {
+class dispBoB : public Stream {
public:
//constructor
/** Create a dispBoB object defined on the I2C master bus
@@ -43,23 +43,12 @@
/** Clear screen
*
*/
- void cls(void);
+ virtual void cls(void);
/** Set cursor position
*
* @param pos display location left to right (0-5)
*/
- void locate(char pos);
- /** Put an ASCII encoded character onto display at current location
- *
- * @param c ASCII encoded character or number (no punctuation)
- */
- void putc(char c);
- /** Put an ASCII encoded character onto display at specified location
- *
- * @param c ASCII encoded character or number
- * @param pos display location left to right (0-5)
- */
- void write(string str);
+ virtual void locate(char pos);
/** Write a scrolling string (right to left) to display
*
* @param str String to be displayed (no punctuation)
@@ -72,11 +61,31 @@
*/
void bus(short leds);
-private:
+#if DOXYGEN_ONLY
+ /** Write a character to the display
+ *
+ * @param c The character to write to the display
+ */
+ int putc(int c);
+ /** Write a formated string to the LCD
+ *
+ * @param format A printf-style format string, followed by the
+ * variables to use in formating the string. N.B. it will
+ * only display the first 6 characters.
+ */
+ int printf(const char* format, ...);
+#endif
+
+protected:
+
+ //Stream implementation functions
+ virtual int _putc(int c);
+ virtual int _getc();
PCA9635 _pca;
DigitalOut _en;
char _cursor;
+ char _pos;
};
#endif