From 24e621a8d8424721ed21ce329d2a28dbf8c35343 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Fri, 30 Jul 2010 03:52:11 +0000 Subject: Altered the CDC Deivice and Host Class drivers' receive byte routines, so that no data is indicated by a negative return value. Added auto flushing of OUT data to the CDC Host Class driver's USBTask function to automatically flush the send pipe buffer. --- Projects/USBtoSerial/USBtoSerial.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) (limited to 'Projects/USBtoSerial') diff --git a/Projects/USBtoSerial/USBtoSerial.c b/Projects/USBtoSerial/USBtoSerial.c index 2c2d0c006..d7df3d91f 100644 --- a/Projects/USBtoSerial/USBtoSerial.c +++ b/Projects/USBtoSerial/USBtoSerial.c @@ -82,13 +82,9 @@ int main(void) for (;;) { /* Read bytes from the USB OUT endpoint into the USART transmit buffer */ - for (uint8_t DataBytesRem = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--) - { - if (RingBuffer_IsFull(&USBtoUSART_Buffer)) - break; - - RingBuffer_AtomicInsert(&USBtoUSART_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface)); - } + int16_t ReceivedByte = CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface); + if (!(ReceivedByte < 0) && !(RingBuffer_IsFull(&USBtoUSART_Buffer))) + RingBuffer_AtomicInsert(&USBtoUSART_Buffer, (uint8_t)ReceivedByte); /* Check if the software USART flush timer has expired */ if (TIFR0 & (1 << TOV0)) -- cgit v1.2.3