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What else could I possibly be missing?

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XANTRONIX 2016-05-29 15:26:06 -05:00
parent c675fc1f54
commit be7b8d0f66
1 changed files with 13 additions and 10 deletions
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23
avr/main.c
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@ -10,14 +10,14 @@
#include <tabby/avr/uart.h> #include <tabby/avr/uart.h>
#include <tabby/avr/buffer.h> #include <tabby/avr/buffer.h>
static volatile uint8_t bits = 0;
static volatile uint8_t value_in = 0x00; /* Data coming in from Game Boy */
static volatile uint8_t value_out = 0x00; /* Data going out to Game Boy */
static const uint16_t timer_counter_intervals[4] = { static const uint16_t timer_counter_intervals[4] = {
1953, 977, 61, 31 1953, 977, 61, 31
}; };
static volatile uint8_t bits = 0;
static volatile uint8_t value_in = 0x00; /* Data coming in from Game Boy */
static volatile uint8_t value_out = 0x00; /* Data going out to Game Boy */
static volatile tabby_avr_buffer buffer = { static volatile tabby_avr_buffer buffer = {
.len = 0, .len = 0,
.cur = 0, .cur = 0,
@ -48,9 +48,9 @@ ISR(TIMER0_COMPB_vect) {
if (--bits == 0) { if (--bits == 0) {
uart_putchar(value_in, NULL); uart_putchar(value_in, NULL);
if (buffer.cur < buffer.len) { if (buffer.cur < buffer.read) {
value_out = buffer.data[buffer.cur++]; value_out = buffer.data[buffer.cur++];
} else { } else if (buffer.cur == buffer.len) {
buffer.len = 0; buffer.len = 0;
buffer.cur = 0; buffer.cur = 0;
buffer.read = 0; buffer.read = 0;
@ -70,11 +70,11 @@ ISR(TIMER0_COMPB_vect) {
* SPI byte receipt interrupt vector * SPI byte receipt interrupt vector
*/ */
ISR(SPI_STC_vect) { ISR(SPI_STC_vect) {
uart_putchar(SPDR, NULL); uart_putchar(SPDR);
if (buffer.cur < buffer.len) { if (buffer.cur < buffer.read) {
SPDR = buffer.data[buffer.cur++]; SPDR = buffer.data[buffer.cur++];
} else { } else if (buffer.cur == buffer.len) {
buffer.len = 0; buffer.len = 0;
buffer.cur = 0; buffer.cur = 0;
buffer.read = 0; buffer.read = 0;
@ -198,7 +198,10 @@ int main() {
buffer.data[buffer.read++] = c; buffer.data[buffer.read++] = c;
if (buffer.read == buffer.len) { if (buffer.read == buffer.len) {
goto reset; state = TABBY_COMMAND_NONE;
received = 0;
continue;
} }
} }