some traps

platform/debug_uart.c

@@ -117,8 +117,7 @@ void debug_write(const char *buf, uint16_t len)
 /** Debug print, used by debug / newlib */
 ssize_t _write_r(struct _reent *rptr, int fd, const void *buf, size_t len)
 {
-    (void)rptr;
-    debug_write(buf, len);
+    trap("Use of newlib printf");
     return len;
 }
 

platform/plat_compat.h

@@ -12,10 +12,10 @@
 #if DISABLE_MSC
  #define TSK_STACK_MAIN      100 // without MSC the stack usage is significantly lower
 #else
- #define TSK_STACK_MAIN      170
+ #define TSK_STACK_MAIN      160
 #endif
 
-#define TSK_STACK_MSG       220 // TF message handler task stack size (all unit commands run on this thread)
+#define TSK_STACK_MSG       180 // TF message handler task stack size (all unit commands run on this thread)
 
 #define BULK_READ_BUF_LEN 256   // Buffer for TF bulk reads
 #define UNIT_TMP_LEN      512   // Buffer for internal unit operations