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58 lines
1.6 KiB
58 lines
1.6 KiB
//
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// Created by MightyPork on 2017/11/21.
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//
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// TinyFrame integration
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//
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#include <USB/usb_device.h>
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#include "platform.h"
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#include "task_main.h"
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#include "USB/usbd_cdc_if.h"
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#include "TinyFrame.h"
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extern osSemaphoreId semVcomTxReadyHandle;
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extern osMutexId mutTinyFrameTxHandle;
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void TF_WriteImpl(TinyFrame *tf, const uint8_t *buff, uint32_t len)
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{
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(void) tf;
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#define CHUNK 64 // same as TF_SENDBUF_LEN, so we should always have only one run of the loop
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int32_t total = (int32_t) len;
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while (total > 0) {
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const int32_t mxStatus = osSemaphoreWait(semVcomTxReadyHandle, 100);
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if (mxStatus != osOK) {
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TF_Error("Tx stalled");
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return;
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}
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const uint16_t chunksize = (uint16_t) MIN(total, CHUNK);
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// this is an attempt to speed it up a little by removing a couple levels of indirection
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assert_param(HAL_OK == HAL_PCD_EP_Transmit(hUsbDeviceFS.pData, CDC_IN_EP, (uint8_t *) buff, chunksize));
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// USBD_LL_Transmit(&hUsbDeviceFS, CDC_IN_EP, (uint8_t *) buff, chunksize);
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// assert_param(USBD_OK == CDC_Transmit_FS((uint8_t *) buff, chunksize));
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buff += chunksize;
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total -= chunksize;
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}
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}
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/** Claim the TX interface before composing and sending a frame */
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bool TF_ClaimTx(TinyFrame *tf)
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{
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(void) tf;
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// assert_param(osThreadGetId() != tskMainHandle);
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assert_param(!inIRQ());
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assert_param(osOK == osMutexWait(mutTinyFrameTxHandle, 5000));
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return true;
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}
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/** Free the TX interface after composing and sending a frame */
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void TF_ReleaseTx(TinyFrame *tf)
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{
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(void) tf;
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assert_param(osOK == osMutexRelease(mutTinyFrameTxHandle));
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}
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