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machine: add TxFifoFreeLevel() for CAN

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sago35
2024-05-10 22:35:36 +09:00
committed by Ron Evans
parent 7d6b667bba
commit 6e58c44390
1 changed files with 5 additions and 0 deletions
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src/machine/machine_atsame5x_can.go
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@@ -221,6 +221,11 @@ func (can *CAN) TxFifoIsFull() bool {
return (can.Bus.TXFQS.Get() & sam.CAN_TXFQS_TFQF_Msk) == sam.CAN_TXFQS_TFQF_Msk
}
// TxFifoFreeLevel returns how many messages can still be set in the TxFifo.
func (can *CAN) TxFifoFreeLevel() int {
return int(can.Bus.GetTXFQS_TFFL())
}
// TxRaw sends a CAN Frame according to CANTxBufferElement.
func (can *CAN) TxRaw(e *CANTxBufferElement) {
putIndex := (can.Bus.TXFQS.Get() & sam.CAN_TXFQS_TFQPI_Msk) >> sam.CAN_TXFQS_TFQPI_Pos