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[net][at] fix repeated enter issue

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This commit is contained in:
zylx 2018-08-04 17:38:16 +08:00
parent 7cb670b205
commit e5d9bb9013
1 changed files with 2 additions and 2 deletions
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4
components/net/at/src/at_client.c
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@ -355,10 +355,10 @@ static char at_client_getchar(void)
{
char ch;
if (rt_device_read(at_client_local->device, 0, &ch, 1) == 0)
while (rt_device_read(at_client_local->device, 0, &ch, 1) == 0)
{
rt_sem_control(at_client_local->rx_notice, RT_IPC_CMD_RESET, RT_NULL);
rt_sem_take(at_client_local->rx_notice, RT_WAITING_FOREVER);
rt_device_read(at_client_local->device, 0, &ch, 1);
}
return ch;