1.22.3.3 CANx_BitTimingCalculationGet Function
C
bool CANx_BitTimingCalculationGet(CAN_BIT_TIMING_SETUP *setup, CAN_BIT_TIMING *bitTiming);
Summary
Calculate the CAN bit timing parameters which will be used to configure the CAN bit timing using CANx_BitTimingSet() API.
Description
This function is used to calculate the CAN bit timing parameters at run time based on the parameter are specified via the CAN_BIT_TIMING_SETUP type parameter. This function returns the calculated CAN bit timing parameters in the CAN_BIT_TIMING type parameter.
Precondition
None.
Parameters
| Param | Description |
|---|---|
| setup | defines parameters required for bit timing calculations |
| bitTiming | CAN bit timing parameters structure |
Returns
status of the request
true : request successful
false : request failed
Example
volatile bool status = false;
CAN_BIT_TIMING_SETUP setup = {0};
CAN_BIT_TIMING bitTiming = {0};
setup.nominalBitTimingSet = true;
setup.nominalBitRate = 250000;
setup.nominalPrescaler = 0;
setup.nominalSamplePoint = 75;
setup.dataBitTimingSet = true;
setup.dataBitRate = 1000000;
setup.dataPrescaler = 3;
setup.dataSamplePoint = 75;
status = CAN1_BitTimingCalculationGet(&setup, &bitTiming);
if (status)
{
status = CAN1_BitTimingSet(&bitTiming);
}
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volatile bool status = false;
CAN_BIT_TIMING_SETUP setup = {0};
CAN_BIT_TIMING bitTiming = {0};
setup.nominalBitTimingSet = true;
setup.nominalBitRate = 500000;
setup.nominalPrescaler = 7;
setup.nominalSamplePoint = 75;
setup.nominalPropagTime = 300;
status = CAN1_BitTimingCalculationGet(&setup, &bitTiming);
if (status)
{
status = CAN1_BitTimingSet(&bitTiming);
}
Remarks
None.