ringBuffer.h

00001 #ifndef RINGBUFFER_H
00002 #define RINGBUFFER_H
00003 
00004 #include <stdint.h>
00005 
00006 #define RX_BUFF_SIZE            129 
00007 #define BYTES_PER_INTERRUPT     1
00008 
00009 typedef struct {
00010     uint8_t buffer[RX_BUFF_SIZE];
00011     uint16_t length;
00012     uint16_t start;
00013     uint16_t end;
00014 } RingBuffer;
00015 
00016 void RingBuffer_init(RingBuffer *buffer);
00017 
00018 int16_t RingBuffer_read(RingBuffer *buffer, uint8_t *target, uint16_t amount);
00019 int16_t RingBuffer_write(RingBuffer *buffer, uint8_t *data, uint16_t amount);
00020 bool RingBuffer_readbyte(RingBuffer *buffer, uint8_t *target);
00021 bool RingBuffer_writebyte(RingBuffer *buffer, uint8_t byte);
00022 
00023 bool RingBuffer_isEmpty(RingBuffer *buffer);
00024 bool RingBuffer_isFull(RingBuffer *buffer);
00025 uint16_t RingBuffer_availableDataAmount(RingBuffer *buffer);
00026 uint16_t RingBuffer_avalailableSpaceAmount(RingBuffer *buffer);
00027 
00028 
00029 #define RingBuffer_available_data(B) (((B)->end + (B)->length - (B)->start) % (B)->length)
00030 #define RingBuffer_available_space(B) ((B)->length - 1 - RingBuffer_available_data((B)))
00031 #define RingBuffer_full(B) (RingBuffer_available_data((B)) - ((B)->length - 1) == 0)
00032 #define RingBuffer_empty(B) (RingBuffer_available_data((B)) == 0)
00033 #define RingBuffer_puts(B, D) RingBuffer_write((B), bdata((D)), blength((D)))
00034 #define RingBuffer_get_all(B) RingBuffer_gets((B), RingBuffer_available_data((B)))
00035 #define RingBuffer_starts_at(B) ((B)->buffer + (B)->start)
00036 #define RingBuffer_ends_at(B) ((B)->buffer + (B)->end)
00037 #define RingBuffer_commit_read(B, A) ((B)->start = ((B)->start + (A)) % (B)->length)
00038 #define RingBuffer_commit_write(B, A) ((B)->end = ((B)->end + (A)) % (B)->length)
00039 
00040 #endif