Kojo / FourDigitLED

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Dependents:   IF-SmartClock

7segment4LED.cpp@0:7a8925d2a8e7, 2015-06-25 (annotated)

Committer:
takashikojo
Date:
Thu Jun 25 23:30:58 2015 +0000
Revision:
0:7a8925d2a8e7
Initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
takashikojo 0:7a8925d2a8e7 1 #include <mbed.h>
takashikojo 0:7a8925d2a8e7 2 #include "7segment4LED.h"
takashikojo 0:7a8925d2a8e7 3
takashikojo 0:7a8925d2a8e7 4 static unsigned char SegPattern[] = {
takashikojo 0:7a8925d2a8e7 5 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x27, 0x7f, 0x6f,
takashikojo 0:7a8925d2a8e7 6 0x77, 0x7c, 0x39, 0x5e, 0x79, 0x71
takashikojo 0:7a8925d2a8e7 7 };
takashikojo 0:7a8925d2a8e7 8
takashikojo 0:7a8925d2a8e7 9 FourDigitLED::FourDigitLED(PinName seg0, PinName seg1, PinName seg2, PinName seg3,
takashikojo 0:7a8925d2a8e7 10 PinName seg4, PinName seg5, PinName seg6, PinName dot,
takashikojo 0:7a8925d2a8e7 11 PinName digit0, PinName digit1, PinName digit2, PinName digit3
takashikojo 0:7a8925d2a8e7 12 )
takashikojo 0:7a8925d2a8e7 13 {
takashikojo 0:7a8925d2a8e7 14 LEDs = new BusOut( seg0, seg1, seg2, seg3, seg4, seg5, seg6, dot, digit0, digit1, digit2, digit3) ;
takashikojo 0:7a8925d2a8e7 15 scan_digit = 0 ;
takashikojo 0:7a8925d2a8e7 16 /* test LEDs */
takashikojo 0:7a8925d2a8e7 17 LEDs->write(0xfe00 | MASK_DOT | 0x0) ;
takashikojo 0:7a8925d2a8e7 18 wait(1.0) ;
takashikojo 0:7a8925d2a8e7 19 setNum(0, 8); setNum(1, 8); setNum(2, 8); setNum(3, 8);
takashikojo 0:7a8925d2a8e7 20 setDot(0, 1); setDot(1, 1); setDot(2, 1); setDot(3, 1);
takashikojo 0:7a8925d2a8e7 21 /* end test */
takashikojo 0:7a8925d2a8e7 22 Scan_tick.attach(this, &FourDigitLED::Scan, 0.005);
takashikojo 0:7a8925d2a8e7 23 wait(1.0) ;
takashikojo 0:7a8925d2a8e7 24 val[0] = 0 ; val[1] = 0 ; val[2] = 0 ; val[3] = 0 ;
takashikojo 0:7a8925d2a8e7 25 }
takashikojo 0:7a8925d2a8e7 26
takashikojo 0:7a8925d2a8e7 27 FourDigitLED::~FourDigitLED()
takashikojo 0:7a8925d2a8e7 28 {
takashikojo 0:7a8925d2a8e7 29 }
takashikojo 0:7a8925d2a8e7 30
takashikojo 0:7a8925d2a8e7 31 void FourDigitLED::Scan (void)
takashikojo 0:7a8925d2a8e7 32 {
takashikojo 0:7a8925d2a8e7 33 int d ;
takashikojo 0:7a8925d2a8e7 34 d= ++scan_digit ;
takashikojo 0:7a8925d2a8e7 35 d= d % DIGITS ;
takashikojo 0:7a8925d2a8e7 36 LEDs->write(~(0x100 << d) & 0xff00 | (val[d] & 0xff) ) ;
takashikojo 0:7a8925d2a8e7 37 }
takashikojo 0:7a8925d2a8e7 38
takashikojo 0:7a8925d2a8e7 39 int FourDigitLED::setNum(int d, int n)
takashikojo 0:7a8925d2a8e7 40 {
takashikojo 0:7a8925d2a8e7 41 if((n <0) || (n >= 16))return n ;
takashikojo 0:7a8925d2a8e7 42 val[d] = (val[d] & 0xff80) | SegPattern[n] ;
takashikojo 0:7a8925d2a8e7 43 return n ;
takashikojo 0:7a8925d2a8e7 44 }
takashikojo 0:7a8925d2a8e7 45
takashikojo 0:7a8925d2a8e7 46 int FourDigitLED::setDot(int d, bool n)
takashikojo 0:7a8925d2a8e7 47 {
takashikojo 0:7a8925d2a8e7 48 val[d] = (val[d] & 0xff7f) | ((n == false) ? 0x0 : 0x80) ;
takashikojo 0:7a8925d2a8e7 49 return n ;
takashikojo 0:7a8925d2a8e7 50 }
takashikojo 0:7a8925d2a8e7 51
takashikojo 0:7a8925d2a8e7 52 void FourDigitLED::dump(void) {
takashikojo 0:7a8925d2a8e7 53 printf("val = %02x, %02x, %02x, %02x\n", val[3], val[2], val[1], val[0]) ;
takashikojo 0:7a8925d2a8e7 54 }