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Standard
FlexCAN Driver Comparison Chart
FlexCAN
Driver
Configure bitrate in registry
√
Set/Get bitrate (runtime)
√
Manual fine-tuning of CAN timing parameters and clock frequency
×
Configure IST priority in registry
√
Send a single CAN message
√
Receive a single CAN message
√
Send/receive multiple CAN messages in one call
√
High speed reception & buffering of an unlimited amount of messages
×
Configure “Receive Own” in registry
×
Enable/Disable “Receive Own” (runtime)
×
Configure Rx FIFO (Enable/Receive All/FIFO Size) in registry
×
Enable/Disable Rx FIFO (runtime)
×
Set/Get Rx FIFO ID filtering (runtime)
×
Configure “Listen Only” mode in registry
×
Enable/Disable “Listen Only” mode (runtime)
×
Configure oversampling in registry
×
Enable/Disable oversampling (runtime)
×
Configure loopback mode in registry
×
Enable/Disable loopback mode (runtime)
×
Configure Timer Synchronization in registry
×
Enable/Disable Timer Synchronization (runtime)
×
High
Performance
FlexCAN
Driver
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√
√
√
√
√
√
√
√
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√
√
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4.3.8 FlexCAN SDK
The FlexCAN SDK headers allow easy use of the CAN bus. The SDK handles all underlying
communications with the FlexCAN driver. Usage documentation is included in the flexcansdk.h
header file:
//------------// FlexCANInit
//------------// Must be called before anything else.
//
// Input:
//
dwIndex
- CAN instance index (1-based)
// Return:
//
FALSE on error (GetLastError() will return error code)
BOOL FlexCANInit(DWORD dwIndex);
//--------------// FlexCANDeinit
//--------------// Must be called when the FlexCAN is no longer needed (cleans up handles etc).
//
// Input:
//
dwIndex
- CAN instance index (1-based)
// Return:
//
FALSE on error (GetLastError() will return error code)
BOOL FlexCANDeinit(DWORD dwIndex);
//----------------// FlexCANTransfer
//----------------// Transfer multiple packets (either read or write).
//
// Input:
//
dwIndex
- CAN instance index (1-based)
Topaz BSP User Guide (rev. 20)
19