mirror of
https://github.com/Derisis13/AT-VFD.git
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64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
//
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// Created by lacko on 02/03/2022.
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//
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#define F_CPU 8000000UL
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#include <avr/io.h>
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#include <util/delay.h>
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#include "PT6302.h"
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inline void PT6302_startup (void)
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{
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DDRB |= (CSBpin | CLKBpin | DINpin);
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DDRC |= RSTpin;
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PORTB |= (CSBpin | CLKBpin);
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PORTB &= ~DINpin;
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PORTC &= ~RSTpin;
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_delay_us (TPRZ);
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PORTC |= RSTpin;
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_delay_us (TWRSTB);
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}
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void transmit_bytes (const uint8_t *payload, const uint8_t size)
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{
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_delay_us (1);
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PORTB &= ~CSBpin;
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for (int i = 0; i < size; ++i)
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{
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uint8_t data = payload[i];
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for (int j = 0; j < 8; ++j, data = (data >> 1))
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{
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PORTB &= ~CLKBpin;
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if ((data & 0x01) == 0)
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PORTB &= ~DINpin;
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else
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PORTB |= DINpin;
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_delay_us (TCW);
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PORTB |= CLKBpin;
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_delay_us (TCW);
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}
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_delay_us (TDOFF);
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}
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_delay_us (DTCSH);
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PORTB |= CSBpin;
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}
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void set_ports (uint8_t gp1, uint8_t gp2)
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{
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uint8_t command = 0x40;
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if (gp1 != 0)
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command |= 0x01;
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if (gp2 != 0)
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command |= 0x02;
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transmit_bytes (&command, 1);
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}
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void set_duty (uint8_t brightness)
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{
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if (brightness > 7)
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{
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brightness = 7;
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}
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uint8_t command = 0x50 | brightness;
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transmit_bytes (&command, 1);
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}
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