Implemented PINOUT.TXT file

utils/error.h

@@ -39,7 +39,6 @@
     X(NOT_APPLICABLE, NULL) \
     X(HW_TIMEOUT, NULL) \
     X(NO_SUCH_UNIT, NULL) \
-    X(OVERRUN, NULL) /* used in bulk transfer */ \
     X(PROTOCOL_BREACH, NULL) /* eating with the wrong spoon */  \
     X(BAD_UNIT_TYPE, NULL) \
     X(NOT_IMPLEMENTED, NULL) \

utils/ini_writer.c

@@ -91,3 +91,10 @@ void iw_entry(IniWriter *iw, const char *key, const char *format, ...)
     IW_VPRINTF();
     iw_newline(iw);	// one newline after entry
 }
+
+uint32_t iw_measure_total(void (*handler)(IniWriter *))
+{
+    IniWriter iw = iw_init(NULL, 0xFFFFFFFF, 1);
+    handler(&iw);
+    return 0xFFFFFFFF - iw.skip;
+}

utils/ini_writer.h

@@ -97,4 +97,12 @@ __attribute__((format(printf,2,3)));
 void iw_entry(IniWriter *iw, const char *key, const char *format, ...)
     __attribute__((format(printf,3,4)));
 
+/**
+ * Measure total ini writer length using a dummy write
+ *
+ * @param handler - function that normally writes to the writer
+ * @return byte count
+ */
+uint32_t iw_measure_total(void (*handler)(IniWriter *));
+
 #endif //INIWRITER_H