USB CAN sniffer: works as broadcast listener & can write someth; TODO: add filters

F0-nolib/Snippets/printuhex.c

@@ -0,0 +1,14 @@
+// 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){
+        if(*ptr == 0 && i != 3) continue; // omit leading zeros
+        for(j = 1; j > -1; --j){
+            uint8_t half = (*ptr >> (4*j)) & 0x0f;
+            if(half < 10) bufputchar(half + '0');
+            else bufputchar(half - 10 + 'a');
+        }
+    }
+}