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The patch is to change the timeout from 10us to 0 so that we just do a poll for more receive data when there is already data queued. With this patch, the code seems to work just fine with 100Hz timer tick. Thank you, David Mosberger

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This commit is contained in:
skarg
2019-03-17 22:15:27 +00:00
parent f028874041
commit d7ad240f05
1 changed files with 4 additions and 4 deletions
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bacnet-stack/ports/linux/rs485.c
+4 -4
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@@ -482,9 +482,9 @@ void RS485_Check_UART_Data(
/* data is available */
mstp_port->DataRegister = FIFO_Get(&Rx_FIFO);
mstp_port->DataAvailable = true;
/* FIFO is giving data - don't wait very long */
/* FIFO is giving data - just poll */
waiter.tv_sec = 0;
waiter.tv_usec = 10;
waiter.tv_usec = 0;
} else {
/* FIFO is empty - wait a longer time */
waiter.tv_sec = 0;
@@ -514,9 +514,9 @@ void RS485_Check_UART_Data(
/* data is available */
mstp_port->DataRegister = FIFO_Get(&poSharedData->Rx_FIFO);
mstp_port->DataAvailable = true;
/* FIFO is giving data - don't wait very long */
/* FIFO is giving data - just poll */
waiter.tv_sec = 0;
waiter.tv_usec = 10;
waiter.tv_usec = 0;
} else {
/* FIFO is empty - wait a longer time */
waiter.tv_sec = 0;