update lib/ymodem.c

Signed-off-by: surenyi <surenyi82@163.com>
5 years ago · d8ce5d5d85
1 changed files with 8 additions and 8 deletions
--- a/lib/ymodem.c
+++ b/lib/ymodem.c
@ -334,14 +334,14 @@ retry:
        /* eot */
        if (pkt_size == 0) {
-            if (rx->eot == 1) {
+            switch (rx->eot) {
-                put_byte(uart, NAK);
+                case 1:
-                continue;
+                    put_byte(uart, NAK);
-            }
+                    break;
-
+                case 2:
-            if (rx->eot == 2) {
+                    put_byte(uart, ACK);
-                put_byte(uart, ACK);
+                    put_byte(uart, WANTCRC);
-                put_byte(uart, WANTCRC);
+                    break;
            }
        }
    }