/****************************************************************************
* DESCRIPTION: Waits on the SilenceTimer for 40 bits.
* RETURN: none
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Turnaround_Delay(
void)
{
uint16_t turnaround_time;
// U8_T i;
// uint16_t RS485_Baud;
/* delay after reception before trasmitting - per MS/TP spec */
/* wait a minimum 40 bit times since reception */
/* at least 1 ms for errors: rounding, clock tick */
// if baud is 9600, turnaround_time is 4
// if baud if 19200, turnaround time is 2
// turnaround_time = 2 + ((Tturnaround * 1000UL) / RS485_Baud);
if(modbus.com_config[0] == BAC_MSTP)
{
if(modbus.baudrate == 9600)
{
turnaround_time = 6;
}
else if(modbus.baudrate == 19200)
{
turnaround_time = 4;
}
else if(modbus.baudrate == 38400)
{
turnaround_time = 3;
}
else
turnaround_time = 2;
}
while (Timer_Silence() < turnaround_time)
{
/* do nothing - wait for timer to increment */
};
}
/****************************************************************************
* DESCRIPTION: Waits on the SilenceTimer for 40 bits.
* RETURN: none
* ALGORITHM: none
* NOTES: none
*****************************************************************************/
void RS485_Turnaround_Delay(
void)
{
uint16_t turnaround_time;
/* delay after reception before trasmitting - per MS/TP spec */
/* wait a minimum 40 bit times since reception */
/* at least 1 ms for errors: rounding, clock tick */
turnaround_time = 1 + ((Tturnaround * 1000UL) / RS485_Baud);
while (Timer_Silence() < turnaround_time) {
/* do nothing - wait for timer to increment */
};
}
