neale
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hw-rollerderby-scoreboard
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Working with Arduino

This commit is contained in:
Neale Pickett 2013-03-27 22:47:17 -06:00
parent b58818bb08
commit e6de181523
2 changed files with 44 additions and 51 deletions
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8
Makefile
View File

@ -1,3 +1,5 @@
PROG = main
CC = avr-gcc CC = avr-gcc
CFLAGS += -mmcu=atmega328p CFLAGS += -mmcu=atmega328p
CFLAGS += -DF_CPU=16000000UL CFLAGS += -DF_CPU=16000000UL
@ -12,15 +14,15 @@ AVDFLAGS += -P /dev/ttyACM0
upload: .upload upload: .upload
.upload: blink.hex .upload: $(PROG).hex
avrdude $(AVDFLAGS) -U flash:w:$< avrdude $(AVDFLAGS) -U flash:w:$<
touch $@ touch $@
blink.hex: blink $(PROG).hex: $(PROG)
avr-objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@ avr-objcopy -O ihex -R .eeprom -R .fuse -R .lock -R .signature $< $@
clean: clean:
rm -f blink.hex blink rm -f $(PROG) *.hex .upload

91
main.c
View File

@ -1,4 +1,4 @@
#include <msp430.h> #include <avr/io.h>
#include <stdint.h> #include <stdint.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdbool.h> #include <stdbool.h>
@ -25,29 +25,29 @@ enum {
uint8_t last_controller = 0; uint8_t last_controller = 0;
#define MODE BIT0 #define MODE _BV(0)
#define SIN BIT1 #define SIN _BV(1)
#define SCLK BIT2 #define SCLK _BV(2)
#define XLAT BIT3 #define XLAT _BV(3)
// Connect GSCLK to SCLK // Connect GSCLK to SCLK
// Connect BLANK to XLAT // Connect BLANK to XLAT
// TRUST ME, THIS TOTALLY WORKS // TRUST ME, THIS TOTALLY WORKS
#define NESCLK BIT4 #define NESCLK _BV(4)
#define NESLTCH BIT5 #define NESLTCH _BV(5)
#define NESSOUT BIT7 #define NESSOUT _BV(6)
// NES Controller buttons // NES Controller buttons
#define BTN_A BIT7 #define BTN_A _BV(7)
#define BTN_B BIT6 #define BTN_B _BV(6)
#define BTN_SELECT BIT5 #define BTN_SELECT _BV(5)
#define BTN_START BIT4 #define BTN_START _BV(4)
#define BTN_UP BIT3 #define BTN_UP _BV(3)
#define BTN_DOWN BIT2 #define BTN_DOWN _BV(2)
#define BTN_LEFT BIT1 #define BTN_LEFT _BV(1)
#define BTN_RIGHT BIT0 #define BTN_RIGHT _BV(0)
#define bit(pin, bit, on) pin = (on ? (pin | bit) : (pin & ~bit)) #define bit(pin, bit, on) pin = (on ? (pin | bit) : (pin & ~bit))
@ -56,10 +56,10 @@ const uint8_t seven_segment_digits[] = {
0x7b, 0x09, 0xb3, 0x9b, 0xc9, 0xda, 0xfa, 0x0b, 0xfb, 0xdb, 0x7b, 0x09, 0xb3, 0x9b, 0xc9, 0xda, 0xfa, 0x0b, 0xfb, 0xdb,
}; };
#define mode(on) bit(P1OUT, MODE, on) #define mode(on) bit(PORTD, MODE, on)
#define sin(on) bit(P1OUT, SIN, on) #define sin(on) bit(PORTD, SIN, on)
#define sclk(on) bit(P1OUT, SCLK, on) #define sclk(on) bit(PORTD, SCLK, on)
#define xlat(on) bit(P1OUT, XLAT, on) #define xlat(on) bit(PORTD, XLAT, on)
void void
latch() latch()
@ -109,16 +109,6 @@ write_num(uint16_t number, int digits)
} }
} }
void
blip()
{
int i;
for (i = 0; i < 12; i += 1) {
__delay_cycles(1);
}
}
/* Set up grayscale */ /* Set up grayscale */
void void
setup_gs() setup_gs()
@ -190,18 +180,18 @@ nesprobe()
uint8_t state = 0; uint8_t state = 0;
uint8_t ret = 0; uint8_t ret = 0;
P1OUT |= NESLTCH; PORTD |= NESLTCH;
P1OUT &= ~NESLTCH; PORTD &= ~NESLTCH;
for (i = 0; i < 8; i += 1) { for (i = 0; i < 8; i += 1) {
state <<= 1; state <<= 1;
if (P1IN & NESSOUT) { if (PIND & NESSOUT) {
// Button not pressed // Button not pressed
} else { } else {
state |= 1; state |= 1;
} }
P1OUT |= NESCLK; PORTD |= NESCLK;
P1OUT &= ~NESCLK; PORTD &= ~NESCLK;
} }
// Only report button down events. // Only report button down events.
@ -281,24 +271,18 @@ main(void)
{ {
uint16_t jiffies = 0; uint16_t jiffies = 0;
WDTCTL = WDTPW + WDTHOLD; // Disable Watchdog Timer DDRD = ~(NESSOUT);
P1DIR |= MODE + SIN + SCLK + XLAT + NESCLK + NESLTCH + BIT6; // P1 output bits DDRB = 0xff;
P1DIR &= ~(NESSOUT);
P1OUT = 0; PORTD = 0;
//setup_gs(); //setup_gs();
setup_dc(); setup_dc();
// Enable interrupts
CCTL0 |= CCIE; // Trigger interrupt on A checkpoint
TACTL = TASSEL_2 + MC_1; // Set timer A to SMCLCK, up mode
TACCR0 = 0x4444; // Interrupt 60 times per second
__enable_interrupt();
// Now actually run // Now actually run
for (;;) { for (;;) {
uint32_t i;
update_controller(); update_controller();
if (tick) { if (tick) {
@ -311,14 +295,21 @@ main(void)
loop(); loop();
//P1OUT ^= BIT6; PORTB ^= 0xff;
}
}
} }
} }
// XXX: fix timer_a
for (i = 0; i < 20000; i += 1) {
tick = !tick;
}
tick = true;
}
}
// XXX: reenable this
// Timer A0 interrupt service routine // Timer A0 interrupt service routine
__attribute__((interrupt(TIMER0_A0_VECTOR))) //__attribute__((interrupt(TIMER0_A0_VECTOR)))
void timer_a(void) void timer_a(void)
{ {
tick = true; tick = true;