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#include "mbed.h"
#include "2048.h"
#include "spi_init.h"
#include "counter.h"
#include "Adafruit_SSD1306.h"
#define SW_PINS p24, p23, p22, p21
#define SW_PERIOD 20000 // 20ms
void tout(void);
void draw(int board[4][4]);
// Onboard LED
PinName switch_pin[] = { SW_PINS };
Counter *switch_position[4];
Ticker timer;
//Ticker pwm;
volatile uint16_t switch_count[4] = { 0, 0, 0, 0 };
volatile uint16_t switch_pressed[4] = { 0, 0, 0, 0 };
volatile uint16_t last_pressed[4] = { 0, 0, 0, 0 };
uint16_t current_f[4] = { 0, 0, 0, 0 };
volatile uint16_t update = 0;
// Initialise display
SPInit gSpi(D_MOSI_PIN, NC, D_CLK_PIN);
Adafruit_SSD1306_Spi oled(gSpi, D_DC_PIN, D_RST_PIN, D_CS_PIN, 64, 128);
int main(void)
{
int done = 0;
int board[4][4];
init(board);
oled.setRotation(2);
wait(0.5);
// Enable ISR for the switch rising edge
for (int i = 0; i < 4; ++i) {
switch_position[i] = new Counter(switch_pin[i]);
}
//Attach switch sampling timer ISR to the timer instance with the required period
timer.attach_us(&tout, SW_PERIOD);
oled.clearDisplay();
oled.printf("%ux%u Group Ay08-04\n", oled.width(), oled.height());
draw(board);
for (;;) {
if (update) {
update = 0;
done = 0;
oled.setTextCursor(0, 0);
//Write the latest switch osciallor count
for (int i = 3; i >= 0; --i) {
if (switch_pressed[i] && !last_pressed[i])
done = move(i, board);
}
if(done){
add2(board);
draw(board);
}
if(gameover(board))
oled.printf("\nGame Over!");
//Copy the display buffer to the display
oled.display();
}
}
}
//Interrupt Service Routine for the switch sampling timer
void tout(void)
{
// Query how many times switch triggered
for (int i = 0; i < 4; ++i) {
switch_count[i] = switch_position[i]->read();
switch_position[i]->write(0);
last_pressed[i] = switch_pressed[i];
if (switch_count[i] < 600)
switch_pressed[i] = 1;
else if (switch_count[i] > 700)
switch_pressed[i] = 0;
}
// Update display
update = 1;
}
void draw(int board[SIZE][SIZE])
{
int x, y;
int value;
for (y = 0; y < SIZE; y++) {
for (x = 0; x < SIZE; x++) {
if (board[x][y] != 0) {
value = 2;
for (int i = 1; i < board[x][y]; ++i) {
value = value * 2;
}
} else {
value = 0;
}
oled.printf("%d\t", value);
}
oled.printf("\n");
}
}
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