diff options
| author | Josh Rahm <joshuarahm@gmail.com> | 2018-01-23 23:13:16 -0700 |
|---|---|---|
| committer | Josh Rahm <joshuarahm@gmail.com> | 2018-01-23 23:13:16 -0700 |
| commit | acd8afd83da625d36ef39bc01717f29f3b689952 (patch) | |
| tree | 9ca98e5b0bd66e10e30fd074d55834140637dcaa /usart/include/common.h | |
| parent | af0244fb51ccb608440128d0f3303ccce77c14c2 (diff) | |
| download | stm32l4-acd8afd83da625d36ef39bc01717f29f3b689952.tar.gz stm32l4-acd8afd83da625d36ef39bc01717f29f3b689952.tar.bz2 stm32l4-acd8afd83da625d36ef39bc01717f29f3b689952.zip | |
simple uart enabled.
Diffstat (limited to 'usart/include/common.h')
| -rw-r--r-- | usart/include/common.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/usart/include/common.h b/usart/include/common.h index d88d82d..9d5c7cd 100644 --- a/usart/include/common.h +++ b/usart/include/common.h @@ -1,6 +1,8 @@ #ifndef COMMON__H #define COMMON__H +#include <stdint.h> + /* Define __IO to be volatile if it's not already. */ #ifndef __IO #define __IO volatile @@ -15,4 +17,14 @@ #define PACKED __attribute__((packed)) #define BIT(n) (1 << (n)) +#define RESERVED_CONCAT_IMPL(x, y) x ## y +#define RESERVED_MACRO_CONCAT(x, y) RESERVED_CONCAT_IMPL(x, y) +#define RESERVED(n) \ + bits_t RESERVED_MACRO_CONCAT(_r, __COUNTER__) :n + +#define RESERVE(type) \ + __IO type RESERVED_MACRO_CONCAT(_r, __COUNTER__) + +typedef uint32_t bits_t; + #endif /* COMMON_H */ |