[incubator-nuttx-apps] branch master updated: nshlib/nsh_ddcmd: calculate time difference with microsecond precision

[xi...@apache.org]

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xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx-apps.git


The following commit(s) were added to refs/heads/master by this push:
     new 71ea8b052 nshlib/nsh_ddcmd: calculate time difference with microsecond precision
71ea8b052 is described below

commit 71ea8b052dc469b8fca0965a0441f17fb7cb91a0
Author: pengyiqiang <pe...@xiaomi.com>
AuthorDate: Fri Jul 15 16:23:39 2022 +0800

    nshlib/nsh_ddcmd: calculate time difference with microsecond precision
    
    Signed-off-by: pengyiqiang <pe...@xiaomi.com>
---
 nshlib/nsh_ddcmd.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/nshlib/nsh_ddcmd.c b/nshlib/nsh_ddcmd.c
index 0b05860db..288cdcc74 100644
--- a/nshlib/nsh_ddcmd.c
+++ b/nshlib/nsh_ddcmd.c
@@ -353,14 +353,15 @@ int cmd_dd(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
 
   elapsed  = (((uint64_t)ts1.tv_sec * NSEC_PER_SEC) + ts1.tv_nsec);
   elapsed -= (((uint64_t)ts0.tv_sec * NSEC_PER_SEC) + ts0.tv_nsec);
-  elapsed /= NSEC_PER_MSEC; /* msec */
+  elapsed /= NSEC_PER_USEC; /* usec */
 
   total = ((uint64_t)dd.sector * (uint64_t)dd.sectsize);
 
-  nsh_output(vtbl, "%llu bytes copied, %u msec, ",
+  nsh_output(vtbl, "%llu bytes copied, %u usec, ",
              total, (unsigned int)elapsed);
   nsh_output(vtbl, "%u KB/s\n" ,
-             (unsigned int)((double)total / (double)elapsed));
+             (unsigned int)(((double)total / 1024)
+             / ((double)elapsed / USEC_PER_SEC)));
 #endif
 
 errout_with_outf: