Use io buffer

Author: kmeudic-ledger

lib_stusb/src/usbd_ledger_cdc.c

@@ -426,8 +426,8 @@ USBD_StatusTypeDef USBD_LEDGER_CDC_data_out(USBD_HandleTypeDef *pdev,
 
     // Filter anything not starting with AT+ :
     if (packet_length > 3) {
-        memset(G_io_apdu_buffer, 0, sizeof(G_io_apdu_buffer));
-        memcpy(G_io_apdu_buffer, packet, packet_length);
+        memset(USBD_LEDGER_io_buffer, 0, packet_length);
+        memcpy(USBD_LEDGER_io_buffer, packet, packet_length);
         G_io_app.apdu_length = packet_length;
         G_io_app.apdu_media  = IO_APDU_MEDIA_CDC;
     }
@@ -489,8 +489,10 @@ int32_t USBD_LEDGER_CDC_data_ready(USBD_HandleTypeDef *pdev,
         // First update packet type in buff :
         buffer[0] = OS_IO_PACKET_TYPE_AT_APDU;
         // Then copy data to G_io_rx_buffer.
-        memmove(buffer + 1, G_io_apdu_buffer, G_io_app.apdu_length);
-        status = G_io_app.apdu_length + 1;
+        if (G_io_app.apdu_length < (max_length - 1)) {
+            memmove(buffer + 1, USBD_LEDGER_io_buffer, G_io_app.apdu_length);
+            status = G_io_app.apdu_length + 1;
+        }
     }
 
     return status;