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1.修复tty读取不完整的问题

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This commit is contained in:
payton 2023-12-07 15:56:49 +08:00
parent 409b49d5dd
commit 93990c03a1
1 changed files with 4 additions and 2 deletions
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6
code/application/source/sf_app/code/source/ttyusb/sf_hal_ttyusb.c
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@ -430,23 +430,25 @@ SINT32 sf_hal_ttyusb2_read_buf(SF_TTY_DATA_TYPE_S *recv)
TimeoutVal.tv_sec = 0;
TimeoutVal.tv_usec = (recv->waitMs)*1000;
while(waitTime--)
while(waitTime)
{
s32ret = select(TtyUSB2Fd + 1, &read_fds, NULL, NULL, &TimeoutVal);
if (s32ret > 0) {
if (FD_ISSET(TtyUSB2Fd, &read_fds)) {
s32ret = read(TtyUSB2Fd, recv->data+dataL, recv->lenMax);
dataL += strlen(recv->data);
if ((((dataL) >= (recv->len)) && (strstr(recv->data, recv->cmp))) || (strstr(recv->data, recv->cmperr))) {
if (((dataL) >= (recv->len)) || (strstr(recv->data, recv->cmp)) || (strstr(recv->data, recv->cmperr))) {
break;
}
}
}
else if (s32ret < 0) {
waitTime--;
MLOGE(" select failed\n");
continue;
}
else if (0 == s32ret) {
waitTime--;
MLOGW("FIFO select timeout [%d]\n",waitTime);
continue;
}