Initial public release.

2020TPCApp1.cydsn/COMM/COMM_Util.c

@@ -0,0 +1,48 @@
+/** \file
+ *  \brief This file implements utility functions used by the communications package.
+ */
+
+/**
+ *  \ingroup CONSOLE
+ */
+
+/* Include Files */
+#include "KTag.h"
+
+/* Local Definitions and Constants */
+
+/* Public Variables */
+
+/* Private Variables */
+static char8 uint64_buffer[20+1];
+
+/* Private Function Prototypes */
+
+/* Public Functions */
+
+//! Converts a UInt64 to a NULL-terminated string.
+/*!
+ *  This function is necessary because newlib-nano does not support "%llu" / #PRIu64.
+ *  \see https://answers.launchpad.net/gcc-arm-embedded/+question/257014
+ *
+ *  \note    This function is not reentrant!
+ *
+ *  \param   value      pointer to the digital input object.
+ *  \return             pointer to a NULL-terminated string containing the base-10 textual representation of #value.
+ */
+char8 * COMM_UInt64ToDecimal(uint64_t value)
+{
+    char8 * p = uint64_buffer + sizeof(uint64_buffer);
+    *(--p) = 0x00;
+    
+    for (bool first_time = true; value || first_time; first_time = false)
+    {
+        const uint32_t digit = value % 10;
+        const char c = '0' + digit;
+        *(--p) = c;
+        value = value / 10;
+    }
+    return p;
+}
+
+/* Private Functions */