Added string conversion functions for ff16, ff32 and updated console …

…module description (Stephane-D#396)

* Updated the description of memory consumption by the Console module

* Added functions fastFix16ToStr, fastFix32ToStr, FF16_toStr, FF32_toStr

inc/config.h

@@ -159,7 +159,7 @@
 /**
  *  \brief
  *      Set it to 1 if you want to enable the TTY text console module (written by Andreas Dietrich).<br>
- *      It consume about 34 bytes of memory when enabled.
+ *      It consume about 28 bytes of memory when enabled.
  */
 #define MODULE_CONSOLE          1
 

inc/string.h

@@ -278,6 +278,34 @@ void fix16ToStr(fix16 value, char *str, u16 numdec);
  * Converts the specified fix32 value to string.<br>
  */
 void fix32ToStr(fix32 value, char *str, u16 numdec);
+/**
+ *  \brief
+ *      Convert a fastfix16 value to string.
+ *
+ *  \param value
+ *      The fastfix16 value to convert to string.
+ *  \param str
+ *      Destination string (it must be large enough to receive result).
+ *  \param numdec
+ *      Number of wanted decimal.
+ *
+ * Converts the specified fastfix16 value to string.<br>
+ */
+void fastFix16ToStr(fastfix16 value, char *str, u16 numdec);
+/**
+ *  \brief
+ *      Convert a fastfix32 value to string.
+ *
+ *  \param value
+ *      The fastfix32 value to convert to string.
+ *  \param str
+ *      Destination string (it must be large enough to receive result).
+ *  \param numdec
+ *      Number of wanted decimal.
+ *
+ * Converts the specified fastfix32 value to string.<br>
+ */
+void fastFix32ToStr(fastfix32 value, char *str, u16 numdec);
 /**
  *  \brief
  *      Same as fix16ToStr(..)
@@ -290,6 +318,18 @@ void F16_toStr(fix16 value, char *str, u16 numdec);
  *  \see fix32ToStr
  */
 void F32_toStr(fix32 value, char *str, u16 numdec);
+/**
+ *  \brief
+ *      Same as fastFix16ToStr(..)
+ *  \see fastFix16ToStr
+ */
+void FF16_toStr(fastfix16 value, char *str, u16 numdec);
+/**
+ *  \brief
+ *      Same as fastFix32ToStr(..)
+ *  \see fastFix32ToStr
+ */
+void FF32_toStr(fastfix32 value, char *str, u16 numdec);
 
 #endif // _STRING_H_
 

src/string.c

@@ -334,6 +334,64 @@ void fix32ToStr(fix32 value, char *str, u16 numdec)
     else dst[numdec] = 0;
 }
 
+void fastFix16ToStr(fastfix16 value, char *str, u16 numdec)
+{
+    char *dst = str;
+    fastfix16 v = value;
+
+    if (v < 0)
+    {
+        v = -v;
+        *dst++ = '-';
+    }
+
+    dst += uintToStr(FF16_toInt(v), dst, 1);
+    *dst++ = '.';
+
+    // get fractional part
+    const u16 frac = (((u16) FF16_frac(v)) * (u16) 1000) / ((u16) 1 << FASTFIX16_FRAC_BITS);
+    u16 len = uint16ToStr(frac, dst, 3);
+
+    if (len < numdec)
+    {
+        // need to add ending '0'
+        dst += len;
+        while(len++ < numdec) *dst++ = '0';
+        // mark end here
+        *dst = 0;
+    }
+    else dst[numdec] = 0;
+}
+
+void fastFix32ToStr(fastfix32 value, char *str, u16 numdec)
+{
+    char *dst = str;
+    fastfix32 v = value;
+
+    if (v < 0)
+    {
+        v = -v;
+        *dst++ = '-';
+    }
+
+    dst += uintToStr(FF32_toInt(v), dst, 1);
+    *dst++ = '.';
+
+    // get fractional part
+    const u16 frac = (((u16) FF32_frac(v)) * (u16) 1000) / ((u16) 1 << FASTFIX32_FRAC_BITS);
+    u16 len = uint16ToStr(frac, dst, 3);
+
+    if (len < numdec)
+    {
+        // need to add ending '0'
+        dst += len;
+        while(len++ < numdec) *dst++ = '0';
+        // mark end here
+        *dst = 0;
+    }
+    else dst[numdec] = 0;
+}
+
 void F16_toStr(fix16 value, char *str, u16 numdec)
 {
     fix16ToStr(value, str, numdec);
@@ -344,6 +402,15 @@ void F32_toStr(fix32 value, char *str, u16 numdec)
     fix32ToStr(value, str, numdec);
 }
 
+void FF16_toStr(fastfix16 value, char *str, u16 numdec)
+{
+    fastFix16ToStr(value, str, numdec);
+}
+
+void FF32_toStr(fastfix32 value, char *str, u16 numdec)
+{
+    fastFix32ToStr(value, str, numdec);
+}
 
 static u16 digits10(const u16 v)
 {