pico_rand() is now a weak symbol to allow alternative implementations.

tass-belgium · Nov 27, 2014 · c692099 · c692099
1 parent 48041c7
commit c692099
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/include/pico_config.h b/include/pico_config.h
@@ -14,10 +14,12 @@
 #   define PACKED_STRUCT_DEF __packed struct
 #   define PEDANTIC_STRUCT_DEF __packed struct
 #   define PACKED_UNION_DEF  __packed union
+#   define WEAK 
 #else
 #   define PACKED_STRUCT_DEF struct __attribute__((packed))
 #   define PEDANTIC_STRUCT_DEF struct
 #   define PACKED_UNION_DEF  union   /* Sane compilers do not require packed unions */
+#   define WEAK __attribute__((weak))
 #endif
 
 

diff --git a/stack/pico_stack.c b/stack/pico_stack.c
@@ -62,7 +62,7 @@ void pico_rand_feed(uint32_t feed)
     _rand_seed ^= ~(feed);
 }
 
-uint32_t pico_rand(void)
+uint32_t WEAK pico_rand(void)
 {
     pico_rand_feed((uint32_t)pico_tick);
     return _rand_seed;