restructuring

F0:F030,F042,F072/Snippets/printuhex.c

@@ -0,0 +1,36 @@
+// print 32bit unsigned int as hex
+void printuhex(uint32_t val){
+    addtobuf("0x");
+    uint8_t *ptr = (uint8_t*)&val + 3;
+    int8_t i, j;
+    for(i = 0; i < 4; ++i, --ptr){
+        for(j = 1; j > -1; --j){
+            uint8_t half = (*ptr >> (4*j)) & 0x0f;
+            if(half < 10) bufputchar(half + '0');
+            else bufputchar(half - 10 + 'a');
+        }
+    }
+}
+
+// print 32bit unsigned int
+void printu(uint32_t val){
+    char buf[11], *bufptr = &buf[10];
+    *bufptr = 0;
+    if(!val){
+        *(--bufptr) = '0';
+    }else{
+        while(val){
+            register uint32_t o = val;
+            val /= 10;
+            *(--bufptr) = (o - 10*val) + '0';
+        }
+    }
+    addtobuf(bufptr);
+}
+void printi(int32_t val){
+    if(val < 0){
+        val = -val;
+        bufputchar('-');
+    }
+    printu((uint32_t)val);
+}