32 lines
1.4 KiB
C
32 lines
1.4 KiB
C
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#ifndef __CARLINK_UTILS_H
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#define __CARLINK_UTILS_H
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void hex2str(const uint8_t *input, uint16_t input_len, char *output);
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int string2hex(char *input, int input_len, char *output, int max_len);
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void str2asiistr(const char *input, int input_len, char *output, int max_len);
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typedef struct
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{
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uint8_t * buffer;
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//const uint8_t * end;
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uint32_t size;
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uint32_t mask;
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uint32_t read_offset;
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uint32_t write_offset;
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} ring_buffer_t;
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int ring_buffer_init( ring_buffer_t *ctx, int buffer_size);
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void ring_buffer_free( ring_buffer_t *ctx );
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uint32_t ring_buffer_write(ring_buffer_t *ctx, uint8_t *buffer, uint32_t len);
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uint32_t ring_buffer_read(ring_buffer_t *ctx, uint8_t *buffer, uint32_t len);
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/*#define ring_buffer_get_read_ptr( RING ) ( &(RING)->buffer[ (RING)->read_offset & (RING)->mask ] )
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#define ring_buffer_get_write_ptr( RING ) ( &(RING)->buffer[ (RING)->write_offset & (RING)->mask ] )
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#define ring_buffer_read_advance( RING, COUNT ) do { (RING)->read_offset += (COUNT); } while( 0 )
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#define ring_buffer_write_advance( RING, COUNT ) do { (RING)->write_offset += (COUNT); } while( 0 )
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#define ring_buffer_reset( RING ) do { (RING)->read_offset = (RING)->write_offset; } while( 0 )*/
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#define ring_buffer_get_bytes_used( RING ) ( (uint32_t)( (RING)->write_offset - (RING)->read_offset ) )
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#define ring_buffer_get_bytes_free( RING ) ( (RING)->size - ring_buffer_get_bytes_used( RING ) )
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#endif
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