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executable file 130 lines (111 sloc) 3.97 KB
/*
* main.c - Atmel main loop for LED matrix driving
*
* Copyright (c) 2015 Raspberry Pi Foundation
*
* Author: Serge Schneider <serge@raspberrypi.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Raspberry Pi nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <avr/interrupt.h>
#include <avr/io.h>
#include <util/twi.h>
#include <stdio.h>
#include <stdlib.h>
#define EE_WP (1 << PB0)
#define KEYS_INT (1 << PB6)
#define FRAME_INT (1 << PB7)
#define LED_SDO (1 << PC0)
#define LED_CLKR (1 << PC1)
#define LED_LE (1 << PC2)
#define LED_SDI (1 << PC3)
#define LED_OE_N (1 << PC7)
#define set(port,x) port |= (x)
#define clr(port,x) port &= ~(x)
extern void draw_loop();
extern void clear_gain(void);
extern void delay(uint8_t ticks);
extern void write_data(uint32_t data, char type);
enum REG_ADDR {
REG_ID = 192,
REG_CFG_LOW,
REG_CFG_HIGH,
};
typedef enum {
DAT_LATCH = 22,
CONF_WRITE = 20,
CONF_READ = 18,
GAIN_WRITE = 16,
GAIN_READ = 14,
DET_OPEN = 13,
DET_SHORT = 12,
DET_OPEN_SHORT = 11,
THERM_READ = 10,
} le_key;
volatile uint8_t pixels[] = {
0x1F, 0x1F, 0x1F, 0x1F, 0x14, 0x03, 0x00, 0x00,
0x00, 0x00, 0x03, 0x12, 0x1F, 0x1F, 0x1F, 0x1F,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
0x1F, 0x1F, 0x1F, 0x12, 0x03, 0x00, 0x00, 0x00,
0x00, 0x04, 0x14, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x1D,
0x1F, 0x1F, 0x11, 0x02, 0x00, 0x00, 0x00, 0x00,
0x05, 0x15, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x0B,
0x00, 0x00, 0x00, 0x00, 0x00, 0x09, 0x1F, 0x1F,
0x1F, 0x0F, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
0x17, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x0A, 0x00,
0x00, 0x00, 0x00, 0x00, 0x0A, 0x1F, 0x1F, 0x1F,
0x0E, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
0x1F, 0x1F, 0x1F, 0x1F, 0x1D, 0x08, 0x00, 0x00,
0x00, 0x00, 0x01, 0x0B, 0x1F, 0x1F, 0x1F, 0x1F,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x14,
0x1F, 0x1F, 0x1F, 0x1B, 0x07, 0x00, 0x00, 0x00,
0x00, 0x01, 0x0C, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F,
0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x15, 0x1F,
0x1F, 0x1F, 0x19, 0x06, 0x00, 0x00, 0x00, 0x00,
0x02, 0x0E, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x12,
0x00, 0x00, 0x00, 0x00, 0x05, 0x17, 0x1F, 0x1F,
0x1F, 0x17, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x0F, 0x02,
};
volatile char keys;
volatile char i2c_reg = 0xff;
int main(void)
{
PORTA = 0;
PORTB = 1;
PORTC = 0;
PORTD = 0xFF;
DDRB = EE_WP | FRAME_INT | KEYS_INT;
DDRC = LED_SDI | LED_CLKR | LED_LE | LED_OE_N;
DDRD = 0xFF;
TCCR0A = (1<<CS12);
TWBR = 0xff;
TWAR = 0x46 << 1;
TWCR = (1 << TWEA) | (1 << TWEN) | (1 << TWINT) | (1 << TWIE);
//clear_gain();
sei();
draw_loop();
for(;;);
}
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