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serial: add writeBuf() and implement for USB.

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This lets USB send up to 32 bytes in a frame instead of 32 one byte
frames.  Add a fallback for drivers that don't implement writeBuf().

Signed-off-by: Michael Hope <mlhx@google.com>
This commit is contained in:
Michael Hope 2015-07-21 21:23:59 +02:00 • committed by borisbstyle
parent 75c86825f7
commit 96306ff9ab
6 changed files with 36 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

22
src/main/drivers/serial.c
View file

@ -40,6 +40,17 @@ void serialWrite(serialPort_t *instance, uint8_t ch)
instance->vTable->serialWrite(instance, ch);
}
void serialWriteBuf(serialPort_t *instance, void *data, int count)
{
if (instance->vTable->writeBuf) {
instance->vTable->writeBuf(instance, data, count);
} else {
for (uint8_t *p = data; count > 0; count--, p++) {
serialWrite(instance, *p);
}
}
}
uint8_t serialRxBytesWaiting(serialPort_t *instance)
{
return instance->vTable->serialTotalRxWaiting(instance);
@ -70,14 +81,7 @@ void serialSetMode(serialPort_t *instance, portMode_t mode)
instance->vTable->setMode(instance, mode);
}
void serialBeginWrite(serialPort_t *instance)
void serialWriteBufShim(void *instance, void *data, int count)
{
if (instance->vTable->beginWrite)
instance->vTable->beginWrite(instance);
}
void serialEndWrite(serialPort_t *instance)
{
if (instance->vTable->endWrite)
instance->vTable->endWrite(instance);
serialWriteBuf((serialPort_t *)instance, data, count);
}