application: improve swd result display

application.c

@@ -342,26 +342,23 @@ static void command_swd_scan(void* argument)
 					} else {
 						printf("(invalid: RAO != 1)");
 					}
+					puts("\n");
+					retry = 0; // no need to retry since we found a valid response
 					break;
 				case SWD_ACK_NOREPLY: // the is no SWD here
-					puts("no reply");
 					retry = 0; // no need to retry
 					break;
 				case SWD_ACK_WAIT: // not allowed for DPIDR
 				case SWD_ACK_FAULT: // not allowed for DPIDR
 				default: // invalid ACK
-					if (!swd_read(&data)) { // read the data
-						puts("parity error ");
-					}
-					printf("garbage data %+08x ", data);
-					swd_turnaround(1); // switch from reading to writing
+					printf("\nSWD possible: SWCLK=CH%02u SWDIO=CH%02u, garbage data=0x%08x\n", swclk, swdio, data);
 					break;
 				}
 				if (retry) {
 					retry--; // decrement retry count
 				}
 			}
-			puts("\n");
+			putc('.');
 			swd_release_pins(); // release pins
 		} // end SWDIO
 	} // end SWCLK