HAL_NETX100_500_CX_UART
HI.
I have downloaded the HAL_Netx100_500_XC_UART example.
The example runs and work O.K.
I have connect on the Interbus (RS422) output of the NXDB500-SYS a PC wich gets the sended character over UART0.
But when i set a breakpoint in one line in the code and want to step over the function, only one Character is received at the Port of the XC_UART 2.
When i dont set a breakpoint all character are received at XC_UART2.
/* check for data rx at XC_UART */
if (XC_UART_OKAY != XC_Uart_GetIndicationFifoFillLevel(xcportnr, &ulFillLevel))
{
/* ERROR: something failed */
setRdyRunLed(RDYRUN_LED_RED);
while(1) {}
}
if (ulFillLevel != 0)
{
/* data at XC_UART available transfer it to UART0 */
if (XC_UART_OKAY != XC_Uart_GetDataChar(xcportnr, &ulData))
{
/* ERROR: something failed */
setRdyRunLed(RDYRUN_LED_RED);
while(1) {}
}
NetXPutCharacter(0,ulData);
}
Why the character are lost ?
Br
Rainer
M T
Hilscher Gesellschaft für Systemautomation mbH
Hi Rainer,
Did you initialized the FIFO unit wrong? If there's not enough space in the FIFO unit the UART needs to discard the data as every normal UART does. There is a diagnostics counter for this case (see ulIndDroppedDueFifoFullCnt / ulIndCharDroppedDueFifoFullCnt / ulIndDroppedDueNoEmptyPointerCnt).
The following code comes from the XC Uart Example and is made for UART0:
const unsigned int auPfifoBorders[32] = { 100, 100, 100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };The sum of all elements must not exceed 2048 on netX100/500 (and 1024 on the netX50).
Please try the following which should work for all 4 Ports.
const unsigned int auPfifoBorders[32] = { 100, 100, 100, 100, 28, 28, 28, 28, 100, 100, 100, 100, 28, 28, 28, 28, 100, 100, 100, 100, 28, 28, 28, 28, 100, 100, 100, 100, 28, 28, 28, 28 };ATTENTION: This will reset and re-initalize all FIFO units. These depths are only meant to be used with the UART.
Regards
MT