webradio/firmware/main.c

91 lines
1.4 KiB
C

#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/pgmspace.h>
#include <util/delay.h>
#include "oled-display/lcd.h"
#include "input.h"
#include "systick.h"
#define PORT_SPI(t) t##B
#define PIN_SPI_CS (1 << 2)
int dbg = 0;
void spi_init()
{
SPCR = (1 << SPE);
SPSR = (1 << SPI2X);
DDRB |= (1 << 4);
}
uint8_t spi_proc()
{
static uint8_t new_data = 0;
static uint8_t x = 0;
static uint8_t y = DISPLAY_HEIGHT / 8 - 1;
uint8_t spi_cs;
spi_cs = !(PORT_SPI(PIN) & PIN_SPI_CS);
if (spi_cs) {
if (SPSR & (1 << SPIF)) {
//SPDR = get_rotary_delta();
SPDR = get_switch_event();
//SPDR = dbg;
lcd_set_buffer(x, y, SPDR);
if (y == 0) {
y = DISPLAY_HEIGHT / 8 - 1;
x++;
if (x == DISPLAY_WIDTH) {
x = 0;
new_data = 1; // Only update the display if a full frame was received
}
} else {
y--;
}
}
} else {
if (new_data) {
lcd_display();
new_data = 0;
}
x = 0;
y = DISPLAY_HEIGHT / 8 - 1;
}
return spi_cs;
}
void lcd_startup()
{
lcd_init(LCD_DISP_ON);
lcd_gotoxy(0, 0);
lcd_puts_p(PSTR("== Internet Radio =="));
lcd_drawLine(0, 9, 120, 9, WHITE);
lcd_gotoxy(0, 2);
lcd_puts_p(PSTR("Starting up."));
lcd_gotoxy(0, 3);
lcd_puts_p(PSTR("Please wait..."));
lcd_display();
}
int main()
{
cli();
lcd_startup();
spi_init();
systick_init();
input_init();
_delay_ms(10);
while (1) {
if (!spi_proc()) {
timer_proc();
input_proc();
}
}
return 0;
}