49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
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#ifndef _AIRKISS_PING_PONG_H_
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#define _AIRKISS_PING_PONG_H_
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#include "airkiss_main.h"
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#define BUF_LEN AIRKISS_MIN_RX_BUF_SIZE
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#define PINIGPONG_DEBUG 1
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#if PINIGPONG_DEBUG
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#define PINIGPONG_PRT os_printf
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#define PINIGPONG_WARN warning_prf
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#define PINIGPONG_FATAL fatal_prf
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#else
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#define PINIGPONG_PRT null_prf
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#define PINIGPONG_WARN null_prf
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#define PINIGPONG_FATAL null_prf
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#endif
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struct buff_str {
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char *addr;
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struct buff_str *next_buf_addr;
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uint32_t read_enable;
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uint32_t write_enable;
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uint32_t length;
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uint32_t offset;
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uint32_t actual;
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};
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struct pingpong_buffer {
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struct buff_str buf1;
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struct buff_str buf2;
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struct buff_str *current_read;
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int read_switch;
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struct buff_str *current_write;
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int write_switch;
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};
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/* return valule: bytes have read, or 0 if not read enable */
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extern int pingpong_init(void);
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extern void pingpong_free(void);
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extern uint32_t read_from_pingpong_buf(void *buf_user, const uint32_t count, uint32_t *actual);
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extern uint32_t write_to_pingpong_buf(void *buf_user, const uint32_t count, const uint32_t actual);
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#endif // _AIRKISS_PING_PONG_H_
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// eof
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