commit 4b8ef89848ee84a1e7d1cf56531fb32094b1ddd7
author yq.wang <yq.wang@mobiletek.cn> Fri Sep 13 02:23:38 2024 -0700
committer yq.wang <yq.wang@mobiletek.cn> Fri Sep 13 02:23:38 2024 -0700
tree fcbe1d7d74b9672435fba218041cb55374d1edbb
parent 15f493d30096ce2a2be2f466dd88c76e53b7e114

解决插拔USB，USB nmea口无数据输出

Change-Id: I4a15e540bf3930e17b25fbd28ab4750e4614ab73

mbtk/mbtk_gnssd/gnss_main.c

diff --git a/mbtk/mbtk_gnssd/gnss_main.c b/mbtk/mbtk_gnssd/gnss_main.c
index 8b91df2..a495f4f 100755
--- a/mbtk/mbtk_gnssd/gnss_main.c
+++ b/mbtk/mbtk_gnssd/gnss_main.c
@@ -322,6 +322,15 @@
 
     if(gnss_usb_nmea_port_fd > 0) {
         ret = write(gnss_usb_nmea_port_fd, nmea, nmea_len);
+        if(ret < 0 && errno != EAGAIN) {
+            LOGE("gnss_port_fd write fail [errno = %d].", errno);
+            if(errno == EIO) {
+                tcflush(gnss_usb_nmea_port_fd, TCIOFLUSH);
+                close(gnss_usb_nmea_port_fd);
+                gnss_usb_nmea_port_fd = -1;
+                gnss_usb_nmea_port_fd = gnss_port_open(GNSS_PORT_USB_NMEA, O_RDWR | O_NONBLOCK | O_NOCTTY, 115200, TRUE);
+            }
+        }
     }
 
     if(gnss_uart_at_port_fd > 0) {