Add transmission of ack/nack over USB

2019-01-01 11:59:15 -05:00 · 2019-01-01 11:59:15 -05:00 · 3a0efec0b9
parent 3e6b6d7428
commit 3a0efec0b9
1 changed files with 11 additions and 2 deletions
--- a/src/usbd_cdc_if.c
+++ b/src/usbd_cdc_if.c
@ -306,9 +306,18 @@ static int8_t CDC_Receive_FS (uint8_t* Buf, uint32_t *Len)
    uint8_t n = *Len;
    uint8_t i;

-    for (i = 0; i < n; i++) {
+    for (i = 0; i < n; i++)
+    {
       if (Buf[i] == '\r') {
-           slcan_parse_str(slcan_str, slcan_str_index);
+           int result = slcan_parse_str(slcan_str, slcan_str_index);
+
+           // Success
+           if(result == 0)
+               CDC_Transmit_FS("\n", 1); 
+           // Failure
+           else
+               CDC_Transmit_FS("\a", 1);
+
           slcan_str_index = 0;
       } else {
           slcan_str[slcan_str_index++] = Buf[i];