small fixes

Makefile

@@ -1,7 +1,7 @@
 CFLAGS += -Wall -Os  -I. -mmcu=attiny26 -std=c99
 DEFINES += -DF_CPU=16e6
 
-OBJECTS = gg.o mmc.o ringbuf_small.o
+OBJECTS = gg.o mmc.o #ringbuf_small.o
 
 # further optimization:
 # this removes dead code and does global linker optimization

gg.c

@@ -3,6 +3,7 @@
 #include <avr/interrupt.h>
 
 #include "ringbuf_small.h"
+#include "ringbuf_small.c"
 #include "mmc.h"
 
 #include "gg.h"
@@ -31,6 +32,7 @@ uint32_t mmc_position;/* current reading position on mmc */
 
 uint8_t overflows = 1;/* remaining counter overflows until next sample */
 #define SAMPLE_BITS 11
+ringbuf_t rb;
 
 #define BUFFER_SIZE 32
 uint16_t buffer[BUFFER_SIZE];/* buffer for mmc data */
@@ -57,7 +59,7 @@ ISR(TIMER1_OVF1_vect){
     uint16_t next;
 
     if(--cnt_to_next){
-        next = ringbuf_get(ringbuf);
+        ringbuf_get(&rb, &next);
         OCR1A = next>>8;
         cnt_to_ocr_incr = 7-(next & 0x7);        
         cnt_to_next = 7;
@@ -75,7 +77,6 @@ ISR(TIMER1_OVF1_vect){
 int main(void) __attribute__((noreturn));
 int main(void)
 {
-	ringbuf_t rb;
 	ringbuf_init(&rb, buffer, BUFFER_SIZE);
 	if(mmc_init() != 0) {/* mmc fail */;}
 	

gg.h

@@ -11,4 +11,4 @@ register uint8_t next_cnt_to_incr __asm__("r6");
 register uint8_t cnt_to_next __asm__("r7");
 register uint8_t needs_new_data_flag __asm__("r8");
 
-ringbuf_t ringbuf;
+extern ringbuf_t rb;

ringbuf_small.h

@@ -13,6 +13,6 @@ typedef struct {
 
 void ringbuf_init(ringbuf_t* rb, uint16_t *buf, uint8_t size);
 uint8_t ringbuf_put(ringbuf_t *rb, uint16_t value);
-uint8_t ringbuf_get(ringbuf_t *rb, uint16_t *data);
+uint8_t ringbuf_get(ringbuf_t *rb, uint16_t *data) __attribute__((always_inline));
 
 #endif