| 0,0 → 1,45 |
|---|
| #ifndef _FIFO_H_ |
| #define _FIFO_H_ |
| |
| #include <stdio.h> |
| #include "91x_lib.h" |
| |
| // the fifo object |
| typedef struct |
| { |
| u8 *buffer; // pointrer to start of the ringbuffer |
| u8 count; // number of characters in FIFO |
| u8 size; // buffer size |
| u8 *pread; // read pointer |
| u8 *pwrite; // write pointer |
| } fifo_t; |
| |
| /* |
| The initialization of the FIFO sets the read/write pointers etc.. |
| The FIFO uses the buffer 'buf' which byte length must 'size'. |
| Returns 1 on success ans 0 in case of an error. |
| */ |
| u8 fifo_init (fifo_t* f, u8* buf, const u8 size); |
| |
| /* |
| Puts a byte into the FIFO. Returns 1 on success and 0 in case of FIFO overflow. |
| */ |
| u8 fifo_put (fifo_t* f, const u8 data); |
| |
| /* |
| Get the next byte from the FIFO as int. Returns 0 if the FIFO is empty. |
| */ |
| u8 fifo_get (fifo_t* f, u8* pdata); |
| |
| /* |
| Get the next byte out of the FIFO. If the FIFO is empty the function blocks |
| until the next byte is put into the FIFO. |
| */ |
| u8 fifo_get_wait (fifo_t* f, u8* pdata); |
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| #endif /* _FIFO_H_ */ |