126 lines
2.1 KiB
C++
126 lines
2.1 KiB
C++
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/*
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* max7219.cpp
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*
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* Created: 17-10-17 21:26:30
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* Author: Adrien
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*/
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#define F_CPU 16000000UL
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#include "max7219.h"
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#include "util.h"
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#include <assert.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include <avr/cpufunc.h>
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max7219::max7219(uint8_t din, uint8_t load, uint8_t clk, uint8_t nOfDigit)
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{
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this->din = pinArduinoToPINXX(din);
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this->load = pinArduinoToPINXX(load);
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this->clk = pinArduinoToPINXX(clk);
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this->nOfDigit = nOfDigit;
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pinDin = pinToPINX(din);
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pinLoad = pinToPINX(load);
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pinClk = pinToPINX(clk);
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ddrDin = pinDin+1; ddrLoad=pinLoad+1;ddrClk=pinClk+1;
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portDin = pinDin+2; portLoad=pinLoad+2;portClk=pinClk+2;
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*ddrDin |= _BV(pinArduinoToPINXX(din));
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*ddrLoad |= _BV(pinArduinoToPINXX(load));
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*ddrClk |= _BV(pinArduinoToPINXX(clk));
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setLoadTo(1);
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setClkTo(0);
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setDataTo(0);
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_delay_ms(50);
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sendRAWdata(nOfDigit, SCANLIMIT);
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sendRAWdata((0xff),DECODEMODE);
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on();
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}
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void max7219::sendRAWdata(volatile uint8_t data, volatile address ad)
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{
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int i = 0;
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setClkTo(0);
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setLoadTo(0);
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_NOP();
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_NOP();
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for (i=0; i<8 ; i++)
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{
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setDataTo(ad&(0b10000000>>i));
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_NOP();
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_NOP();
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setClkTo(1);
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_delay_us(1);
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setClkTo(0);
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_NOP();
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_NOP();
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}
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for (i=0; i<8 ; i++)
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{
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setClkTo(0);
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setDataTo(data&(0b10000000>>i));
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_NOP();
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_NOP();
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setClkTo(1);
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_delay_us(1);
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setClkTo(0);
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_NOP();
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_NOP();
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}
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setLoadTo(1);
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_delay_us(1);
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}
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void max7219::on()
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{
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sendRAWdata(0x01, SHUTDOWN);
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}
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void max7219::off()
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{
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sendRAWdata(0x00, SHUTDOWN);
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}
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void max7219::sendDigitFromArray(uint8_t *array, uint8_t s)
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{
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sendRAWdata(0xFF, DECODEMODE);
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for (int i=0;i<s;i++)
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{
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sendRAWdata(array[i],(address)(D1+i));
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}
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}
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void max7219::setIntensity(const uint8_t i)
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{
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sendRAWdata(i, INTENSITY);
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}
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void max7219::setClkTo(uint8_t v)
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{
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if(v)
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{
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*portClk |= _BV(clk);
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}
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else
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{
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*portClk &= ~(_BV(clk));
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}
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}
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void max7219::setLoadTo(uint8_t v)
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{
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if(v)
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{
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*portLoad |= _BV(load);
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}
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else
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{
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*portLoad &= ~(_BV(load));
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}
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}
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void max7219::setDataTo(uint8_t v)
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{
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if(v)
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{
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*portDin |= _BV(din);
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}
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else
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{
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*portDin &= ~(_BV(din));
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}
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}
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