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Code Issues Wiki Activity

Ability to see how many Tx bytes are free in serial port buffer

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This commit is contained in:
Nicholas Sherlock 2015-06-23 00:30:37 +12:00
parent d0b940bf75
commit 6e504ca52a
13 changed files with 90 additions and 22 deletions
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20
src/main/drivers/serial_softserial.c
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@ -403,7 +403,7 @@ void onSerialRxPinChange(timerCCHandlerRec_t *cbRec, captureCompare_t capture)
}
}
uint8_t softSerialTotalBytesWaiting(serialPort_t *instance)
uint8_t softSerialRxBytesWaiting(serialPort_t *instance)
{
if ((instance->mode & MODE_RX) == 0) {
return 0;
@ -414,6 +414,19 @@ uint8_t softSerialTotalBytesWaiting(serialPort_t *instance)
return (s->port.rxBufferHead - s->port.rxBufferTail) & (s->port.rxBufferSize - 1);
}
uint8_t softSerialTxBytesFree(serialPort_t *instance)
{
if ((instance->mode & MODE_TX) == 0) {
return 0;
}
softSerial_t *s = (softSerial_t *)instance;
uint8_t bytesUsed = (s->port.txBufferHead - s->port.txBufferTail) & (s->port.txBufferSize - 1);
return (s->port.txBufferSize - 1) - bytesUsed;
}
uint8_t softSerialReadByte(serialPort_t *instance)
{
uint8_t ch;
@ -422,7 +435,7 @@ uint8_t softSerialReadByte(serialPort_t *instance)
return 0;
}
if (softSerialTotalBytesWaiting(instance) == 0) {
if (softSerialRxBytesWaiting(instance) == 0) {
return 0;
}
@ -460,7 +473,8 @@ bool isSoftSerialTransmitBufferEmpty(serialPort_t *instance)
const struct serialPortVTable softSerialVTable[] = {
{
softSerialWriteByte,
softSerialTotalBytesWaiting,
softSerialRxBytesWaiting,
softSerialTxBytesFree,
softSerialReadByte,
softSerialSetBaudRate,
isSoftSerialTransmitBufferEmpty,