void USBFrameHandler(U16 wFrame)
{
// send over USB
if( isConnectedFlag ) {
if( delay < 4000 ) {
//FIXME need to delay a few seconds before doing isoc writes, impliment more elegant solution, status or event driven....
delay++;
} else {
//Check to see if the DMA descriptor is marked in the normal-completion status and ready for reset
int needToResetInputDMADescriptorFlag = (((inputDmaDescriptor[3] >> 1) & 0x0F ) == 2);
if (needToResetInputDMADescriptorFlag || !didInputInit) {
//normal completion
if ( !didInputInit) {
didInputInit = 1;
}
//Always write whatever is in our most recent isoc output data buffer, you may want to pust somthing interesting in there....
incrementingNumberCounter++;
memcpy(inputIsocDataBuffer, &incrementingNumberCounter, sizeof(incrementingNumberCounter));
resetDMATransfer(ISOC_IN_EP, inputDmaDescriptor, inputIsocFrameArray,
1, 4, &commonIsocFrameNumber, MAX_PACKET_SIZE, inputIsocDataBuffer);
}
//Check to see if the DMA descriptor is marked in the normal-completion status and ready for reset
int needToResetOutputDMADescriptorFlag = (((outputDmaDescriptor[3] >> 1) & 0x0F ) == 2);
if (needToResetOutputDMADescriptorFlag || !didOutputInit) {
//normal completion
if ( !didOutputInit) {
didOutputInit = 1;
} else {
//The host sample code will send a byte indicating if the sample LED on olimex 2148 dev board should be on of off.
if( outputIsocDataBuffer[0] ) {//Note: were only inspecting the first of 4 isoc frames, this is just for the blinky light example
IOSET0 = (1<<10);//turn on led on olimex dev board
} else {
IOCLR0 = (1<<10);//turn off led on olimex dev board
}
}
resetCount++;
resetDMATransfer(ISOC_OUT_EP, outputDmaDescriptor, outputIsocFrameArray,
NUM_ISOC_FRAMES, BYTES_PER_ISOC_FRAME, &commonIsocFrameNumber, MAX_PACKET_SIZE, outputIsocDataBuffer);
}
}
}
}
void USBFrameHandler(U16 wFrame)
{
if( cc < 4000 ) {
cc++;
}
int inputR = (((inputDmaDescriptor[3] >> 1) & 0x0F ) == 2);
if (cc >= 4000 && (inputR || !didInputInit)) {
//normal completion
if ( !didInputInit) {
didInputInit = 1;
}
/*
resetDMATransfer(ISOC_IN_EP, inputDmaDescriptor, inputIsocFrameArray,
NUM_ISOC_FRAMES, BYTES_PER_ISOC_FRAME, &commonIsocFrameNumber, MAX_PACKET_SIZE, inputIsocDataBuffer);
*/
memcpy(inputIsocDataBuffer, ¤tADCReadValue, 4);
resetDMATransfer(ISOC_IN_EP, inputDmaDescriptor, inputIsocFrameArray,
1, 4, &commonIsocFrameNumber, MAX_PACKET_SIZE, inputIsocDataBuffer);
}
}
