diff options
author | Fred Sundvik <fsundvik@gmail.com> | 2016-07-06 13:26:20 +0300 |
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committer | Fred Sundvik <fsundvik@gmail.com> | 2016-07-06 13:26:20 +0300 |
commit | d5e7603d551a31836bf0c59db259ddc3593a1aa7 (patch) | |
tree | cf2ae7163eb7431e24e8a93752ef4fd18d292cd0 /quantum/serial_link/protocol/triple_buffered_object.h | |
parent | c5bf090d16cf1fc4d8186f1e8fbbd62457e72da6 (diff) |
Remove extra serial_link subdirectory
Diffstat (limited to 'quantum/serial_link/protocol/triple_buffered_object.h')
-rw-r--r-- | quantum/serial_link/protocol/triple_buffered_object.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/quantum/serial_link/protocol/triple_buffered_object.h b/quantum/serial_link/protocol/triple_buffered_object.h new file mode 100644 index 0000000000..2e57db3f50 --- /dev/null +++ b/quantum/serial_link/protocol/triple_buffered_object.h @@ -0,0 +1,51 @@ +/* +The MIT License (MIT) + +Copyright (c) 2016 Fred Sundvik + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +*/ + +#ifndef SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H +#define SERIAL_LINK_TRIPLE_BUFFERED_OBJECT_H + +#include <stdint.h> + +typedef struct { + uint8_t state; + uint8_t buffer[] __attribute__((aligned(4))); +}triple_buffer_object_t; + +void triple_buffer_init(triple_buffer_object_t* object); + +#define triple_buffer_begin_write(object) \ + (typeof(*object.buffer[0])*)triple_buffer_begin_write_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object) + +#define triple_buffer_end_write(object) \ + triple_buffer_end_write_internal((triple_buffer_object_t*)object) + +#define triple_buffer_read(object) \ + (typeof(*object.buffer[0])*)triple_buffer_read_internal(sizeof(*object.buffer[0]), (triple_buffer_object_t*)object) + +void* triple_buffer_begin_write_internal(uint16_t object_size, triple_buffer_object_t* object); +void triple_buffer_end_write_internal(triple_buffer_object_t* object); +void* triple_buffer_read_internal(uint16_t object_size, triple_buffer_object_t* object); + + +#endif |