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Revert "fix the bug that rx_notice out of sync when data received after last rt_device_read() is zero"

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Wayne 2021-02-04 22:53:58 +08:00 committed by GitHub
parent d514fea54a
commit a50d81827a
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1 changed files with 10 additions and 12 deletions
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14
components/net/at/src/at_client.c
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@ -434,21 +434,19 @@ static rt_err_t at_client_getchar(at_client_t client, char *ch, rt_int32_t timeo
{ {
rt_err_t result = RT_EOK; rt_err_t result = RT_EOK;
__retry: while (rt_device_read(client->device, 0, ch, 1) == 0)
{
rt_sem_control(client->rx_notice, RT_IPC_CMD_RESET, RT_NULL);
result = rt_sem_take(client->rx_notice, rt_tick_from_millisecond(timeout)); result = rt_sem_take(client->rx_notice, rt_tick_from_millisecond(timeout));
if (result != RT_EOK) if (result != RT_EOK)
{ {
return result; return result;
} }
if(rt_device_read(client->device, 0, ch, 1) == 1) }
{
return RT_EOK; return RT_EOK;
} }
else
{
goto __retry;
}
}
/** /**
* AT client receive fixed-length data. * AT client receive fixed-length data.