2013-03-07 23:55:05 -07:00
|
|
|
#include <msp430.h>
|
2013-02-26 22:49:02 -07:00
|
|
|
#include <stdint.h>
|
2013-03-17 23:42:17 -06:00
|
|
|
#include <stdlib.h>
|
2013-03-11 17:14:29 -06:00
|
|
|
#include <stdbool.h>
|
2013-02-26 22:49:02 -07:00
|
|
|
|
2013-03-11 18:28:25 -06:00
|
|
|
// Number of shift registers in your scoreboard
|
|
|
|
// If you want scores to go over 199, you need 8
|
|
|
|
const int nsr = 6;
|
|
|
|
|
2013-03-11 23:14:30 -06:00
|
|
|
volatile bool tick = false; // Set high when clock ticks
|
|
|
|
uint16_t time = 0; // Tenths of a second elapsed since boot
|
|
|
|
|
|
|
|
// Clocks are in deciseconds
|
2013-03-15 23:17:38 -06:00
|
|
|
uint16_t score_a = 0;
|
|
|
|
uint16_t score_b = 0;
|
2013-03-17 23:42:17 -06:00
|
|
|
int16_t period_clock = -600 * 30;
|
|
|
|
int16_t jam_clock = -600 * 2;
|
2013-03-11 23:14:30 -06:00
|
|
|
enum {
|
|
|
|
SETUP,
|
|
|
|
JAM,
|
|
|
|
LINEUP,
|
|
|
|
TIMEOUT
|
2013-03-17 23:42:17 -06:00
|
|
|
} state = SETUP;
|
2013-02-26 22:49:02 -07:00
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
uint8_t last_controller = 0;
|
2013-03-15 23:17:38 -06:00
|
|
|
|
2013-02-26 22:49:02 -07:00
|
|
|
|
2013-03-11 17:14:29 -06:00
|
|
|
#define MODE BIT0
|
|
|
|
#define SIN BIT1
|
|
|
|
#define SCLK BIT2
|
2013-03-15 23:17:38 -06:00
|
|
|
#define XLAT BIT3
|
2013-03-11 23:14:30 -06:00
|
|
|
// Connect GSCLK to SCLK
|
|
|
|
// Connect BLANK to XLAT
|
|
|
|
// TRUST ME, THIS TOTALLY WORKS
|
2013-03-11 17:14:29 -06:00
|
|
|
|
2013-03-15 23:17:38 -06:00
|
|
|
#define NESCLK BIT4
|
|
|
|
#define NESLTCH BIT5
|
|
|
|
#define NESSOUT BIT7
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
|
|
|
|
// NES Controller buttons
|
|
|
|
|
|
|
|
#define BTN_A BIT7
|
|
|
|
#define BTN_B BIT6
|
|
|
|
#define BTN_SELECT BIT5
|
|
|
|
#define BTN_START BIT4
|
|
|
|
#define BTN_UP BIT3
|
|
|
|
#define BTN_DOWN BIT2
|
|
|
|
#define BTN_LEFT BIT1
|
|
|
|
#define BTN_RIGHT BIT0
|
|
|
|
|
|
|
|
|
2013-03-11 17:14:29 -06:00
|
|
|
#define bit(pin, bit, on) pin = (on ? (pin | bit) : (pin & ~bit))
|
|
|
|
|
2013-03-11 23:14:30 -06:00
|
|
|
const uint8_t seven_segment_digits[] = {
|
2013-03-17 23:42:17 -06:00
|
|
|
0x7b, 0x09, 0xb3, 0x9b, 0xc9, 0xda, 0xfa, 0x0b, 0xfb, 0xdb,
|
2013-03-11 23:14:30 -06:00
|
|
|
};
|
2013-03-11 20:17:09 -06:00
|
|
|
|
2013-03-11 17:14:29 -06:00
|
|
|
#define mode(on) bit(P1OUT, MODE, on)
|
|
|
|
#define sin(on) bit(P1OUT, SIN, on)
|
|
|
|
#define sclk(on) bit(P1OUT, SCLK, on)
|
|
|
|
#define xlat(on) bit(P1OUT, XLAT, on)
|
|
|
|
|
|
|
|
void
|
|
|
|
latch()
|
|
|
|
{
|
|
|
|
xlat(true);
|
|
|
|
xlat(false);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2013-03-11 18:28:25 -06:00
|
|
|
pulse()
|
|
|
|
{
|
|
|
|
sclk(true);
|
|
|
|
sclk(false);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write(uint8_t number)
|
2013-03-11 17:14:29 -06:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int j;
|
|
|
|
|
|
|
|
// MSB first
|
2013-03-11 18:28:25 -06:00
|
|
|
for (i = 7; i >= 0; i -= 1) {
|
2013-03-11 17:14:29 -06:00
|
|
|
sin(number & (1 << i));
|
2013-03-17 23:42:17 -06:00
|
|
|
|
2013-03-11 17:14:29 -06:00
|
|
|
for (j = 0; j < 12; j += 1) {
|
2013-03-11 18:28:25 -06:00
|
|
|
pulse();
|
2013-03-11 17:14:29 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-11 18:28:25 -06:00
|
|
|
void
|
|
|
|
write_num(uint16_t number, int digits)
|
|
|
|
{
|
2013-03-15 23:17:38 -06:00
|
|
|
uint16_t divisor = 1;
|
2013-03-11 18:28:25 -06:00
|
|
|
int i;
|
|
|
|
|
2013-03-15 23:17:38 -06:00
|
|
|
for (i = 1; i < digits; i += 1) {
|
|
|
|
divisor *= 10;
|
|
|
|
}
|
|
|
|
|
2013-03-11 18:28:25 -06:00
|
|
|
for (i = 0; i < digits; i += 1) {
|
2013-03-15 23:17:38 -06:00
|
|
|
uint16_t n = (number / divisor) % 10;
|
|
|
|
|
|
|
|
write(seven_segment_digits[n]);
|
|
|
|
divisor /= 10;
|
2013-03-11 18:28:25 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-11 17:14:29 -06:00
|
|
|
void
|
|
|
|
blip()
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2013-03-15 23:17:38 -06:00
|
|
|
for (i = 0; i < 12; i += 1) {
|
|
|
|
__delay_cycles(1);
|
2013-03-11 17:14:29 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-11 18:28:25 -06:00
|
|
|
/* Set up grayscale */
|
|
|
|
void
|
|
|
|
setup_gs()
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < nsr; i += 1) {
|
|
|
|
write(0);
|
|
|
|
}
|
|
|
|
latch();
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set up dot correction.
|
|
|
|
*
|
|
|
|
* We don't use dot correction so this is easy: set everything to full brightness.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
setup_dc()
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
mode(true);
|
|
|
|
sin(true);
|
|
|
|
for (i = 0; i < nsr * 96; i += 1) {
|
|
|
|
pulse();
|
|
|
|
}
|
|
|
|
latch();
|
|
|
|
mode(false);
|
|
|
|
}
|
|
|
|
|
2013-03-11 23:14:30 -06:00
|
|
|
/*
|
|
|
|
* Update all the digits
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
draw()
|
|
|
|
{
|
2013-03-15 23:17:38 -06:00
|
|
|
uint16_t clk;
|
|
|
|
|
|
|
|
write_num(score_a, 3);
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
if ((state == TIMEOUT) && (jam_clock % 8 == 0)) {
|
|
|
|
for (clk = 0; clk < 4; clk += 1) {
|
|
|
|
write(0);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
clk = (abs(period_clock / 10) / 60) * 100;
|
|
|
|
clk += abs(period_clock / 10) % 60;
|
|
|
|
write_num(clk, 4);
|
|
|
|
}
|
2013-03-11 23:14:30 -06:00
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
clk = (abs(jam_clock / 600) % 10) * 1000;
|
|
|
|
clk += abs(jam_clock) % 600;
|
2013-03-15 23:17:38 -06:00
|
|
|
write_num(clk, 4);
|
2013-03-11 23:14:30 -06:00
|
|
|
|
2013-03-15 23:17:38 -06:00
|
|
|
write_num(score_b, 2);
|
2013-03-11 23:14:30 -06:00
|
|
|
|
|
|
|
latch();
|
|
|
|
pulse();
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2013-03-15 23:17:38 -06:00
|
|
|
* Probe the NES controller
|
2013-03-11 23:14:30 -06:00
|
|
|
*/
|
2013-03-15 23:17:38 -06:00
|
|
|
uint8_t
|
|
|
|
nesprobe()
|
2013-03-11 23:14:30 -06:00
|
|
|
{
|
2013-03-15 23:17:38 -06:00
|
|
|
int i;
|
|
|
|
uint8_t state = 0;
|
2013-03-17 23:42:17 -06:00
|
|
|
uint8_t ret = 0;
|
2013-03-15 23:17:38 -06:00
|
|
|
|
|
|
|
P1OUT |= NESLTCH;
|
|
|
|
P1OUT &= ~NESLTCH;
|
2013-03-11 23:14:30 -06:00
|
|
|
|
2013-03-15 23:17:38 -06:00
|
|
|
for (i = 0; i < 8; i += 1) {
|
|
|
|
state <<= 1;
|
|
|
|
if (P1IN & NESSOUT) {
|
|
|
|
// Button not pressed
|
|
|
|
} else {
|
|
|
|
state |= 1;
|
|
|
|
}
|
|
|
|
P1OUT |= NESCLK;
|
|
|
|
P1OUT &= ~NESCLK;
|
2013-03-11 23:14:30 -06:00
|
|
|
}
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
// Only report button down events.
|
|
|
|
ret = (last_controller ^ state) & state;
|
|
|
|
last_controller = state;
|
|
|
|
|
|
|
|
return ret;
|
2013-03-15 23:17:38 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
update_controller()
|
|
|
|
{
|
|
|
|
uint8_t val = nesprobe();
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
if (val & BTN_A) {
|
2013-03-11 23:14:30 -06:00
|
|
|
switch (state) {
|
|
|
|
case JAM:
|
2013-03-17 23:42:17 -06:00
|
|
|
jam_clock = -300;
|
2013-03-11 23:14:30 -06:00
|
|
|
state = LINEUP;
|
|
|
|
break;
|
|
|
|
default:
|
2013-03-17 23:42:17 -06:00
|
|
|
jam_clock = -600 * 2;
|
2013-03-11 23:14:30 -06:00
|
|
|
state = JAM;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2013-03-17 23:42:17 -06:00
|
|
|
|
|
|
|
if (val & BTN_START) {
|
|
|
|
switch (state) {
|
|
|
|
case TIMEOUT:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
state = TIMEOUT;
|
|
|
|
jam_clock = 1;
|
|
|
|
}
|
|
|
|
}
|
2013-03-27 21:02:14 -06:00
|
|
|
|
|
|
|
if (val & BTN_LEFT) {
|
|
|
|
score_a += 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (val & BTN_RIGHT) {
|
|
|
|
score_b += 1;
|
|
|
|
}
|
2013-03-15 23:17:38 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Run logic for this decisecond
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
loop()
|
|
|
|
{
|
2013-03-17 23:42:17 -06:00
|
|
|
switch (state) {
|
|
|
|
case SETUP:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (jam_clock) {
|
|
|
|
jam_clock += 1;
|
|
|
|
}
|
2013-03-15 23:17:38 -06:00
|
|
|
}
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
switch (state) {
|
|
|
|
case SETUP:
|
|
|
|
case TIMEOUT:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (period_clock) {
|
|
|
|
period_clock += 1;
|
|
|
|
}
|
2013-03-15 23:17:38 -06:00
|
|
|
}
|
2013-03-11 23:14:30 -06:00
|
|
|
|
|
|
|
draw();
|
|
|
|
}
|
|
|
|
|
2013-02-26 22:49:02 -07:00
|
|
|
int
|
2013-03-07 23:55:05 -07:00
|
|
|
main(void)
|
2013-02-26 22:49:02 -07:00
|
|
|
{
|
2013-03-15 23:17:38 -06:00
|
|
|
uint16_t jiffies = 0;
|
2013-03-11 23:14:30 -06:00
|
|
|
|
2013-03-07 23:55:05 -07:00
|
|
|
WDTCTL = WDTPW + WDTHOLD; // Disable Watchdog Timer
|
2013-03-15 23:17:38 -06:00
|
|
|
P1DIR |= MODE + SIN + SCLK + XLAT + NESCLK + NESLTCH + BIT6; // P1 output bits
|
|
|
|
P1DIR &= ~(NESSOUT);
|
2013-03-11 17:14:29 -06:00
|
|
|
|
|
|
|
P1OUT = 0;
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
//setup_gs();
|
2013-03-11 18:28:25 -06:00
|
|
|
setup_dc();
|
2013-03-11 17:14:29 -06:00
|
|
|
|
2013-03-11 18:28:25 -06:00
|
|
|
// Enable interrupts
|
2013-03-15 23:17:38 -06:00
|
|
|
CCTL0 |= CCIE; // Trigger interrupt on A checkpoint
|
2013-03-07 23:55:05 -07:00
|
|
|
TACTL = TASSEL_2 + MC_1; // Set timer A to SMCLCK, up mode
|
2013-03-11 18:28:25 -06:00
|
|
|
TACCR0 = 0x4444; // Interrupt 60 times per second
|
2013-03-07 23:55:05 -07:00
|
|
|
|
|
|
|
__enable_interrupt();
|
2013-03-11 17:14:29 -06:00
|
|
|
|
|
|
|
// Now actually run
|
2013-02-26 22:49:02 -07:00
|
|
|
for (;;) {
|
2013-03-15 23:17:38 -06:00
|
|
|
update_controller();
|
|
|
|
|
2013-03-11 23:14:30 -06:00
|
|
|
if (tick) {
|
|
|
|
tick = false;
|
|
|
|
jiffies += 1;
|
|
|
|
|
|
|
|
if (jiffies == 6) {
|
|
|
|
jiffies = 0;
|
|
|
|
time += 1;
|
|
|
|
|
|
|
|
loop();
|
|
|
|
|
2013-03-17 23:42:17 -06:00
|
|
|
//P1OUT ^= BIT6;
|
2013-03-11 23:14:30 -06:00
|
|
|
}
|
2013-03-07 23:55:05 -07:00
|
|
|
}
|
2013-02-26 22:49:02 -07:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-07 23:55:05 -07:00
|
|
|
// Timer A0 interrupt service routine
|
|
|
|
__attribute__((interrupt(TIMER0_A0_VECTOR)))
|
|
|
|
void timer_a(void)
|
|
|
|
{
|
2013-03-11 23:14:30 -06:00
|
|
|
tick = true;
|
2013-03-07 23:55:05 -07:00
|
|
|
}
|