added to utils

Author: caiodasilva2005

middleware/include/c_utils.h

@@ -33,6 +33,18 @@
 */
 #define EXTRACT_BIT(byte, bit_index) ((byte >> (bit_index)) & 0x01)
 
+/**
+ * Macro for returning the min of two numbers
+ * @param a first number
+ * @param b second number
+ */
+#define min(a, b)                       \
+	({                              \
+		__typeof__(a) _a = (a); \
+		__typeof__(b) _b = (b); \
+		_a < _b ? _a : _b;      \
+	})
+
 void endian_swap(void *ptr, int size);
 
 /// @brief Reverses the bit order of a byte

threadX/inc/u_mutex.h

@@ -0,0 +1,28 @@
+#ifndef __U_MUTEX_H
+#define __U_MUTEX_H
+
+#include "tx_api.h"
+#include "u_general.h"
+#include "u_debug.h"
+#include <stdint.h>
+#include <stdbool.h>
+
+#define MUTEX_WAIT_TIME TX_WAIT_FOREVER
+
+typedef struct {
+    /* PUBLIC: Mutex Configuration Settings */
+    /* Set these when defining an instance of this struct. */
+    const CHAR *name;            /* Name of Mutex */
+    const UINT priority_inherit; /* Specifies if the mutex supports priority inheritance. See page 55 of the "Azure RTOS ThreadX User Guide". */
+
+    /* PRIVATE: Internal implementation - DO NOT ACCESS DIRECTLY */
+    /* (should only be accessed by functions in u_mutexes.c) */
+    TX_MUTEX _TX_MUTEX;
+} mutex_t;
+
+/* API */
+uint8_t mutexes_init(); // Initializes all mutexes set up in u_mutexes.c
+uint8_t mutex_get(mutex_t *mutex); // Gets a mutex.
+uint8_t mutex_put(mutex_t *mutex); // Puts a mutex.
+
+#endif /* u_mutex.h */