Fix the SD Card and EMAC issue:
1. The issue concerns sdmmc library bug (I finally solved) in SD_Init() in the file sdmmc/src/fsl_sd.c:SD_SelectBusTiming() calls SD_SwitchFunction() which sets block size to 64bytes (512bits).Therefore SD_SetBlockSize(card, FSL_SDMMC_DEFAULT_BLOCK_SIZE) should be called again before SD_Init() exits. 2. The issue is wrong variable in drv_emac.c:lpc_emac_tx(), and the wrong data length of send packet to cause the send failure. Signed-off-by: zheng-chow <sernia.zhou@foxmail.com>
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@ -433,6 +433,8 @@ rt_err_t lpc_emac_tx(rt_device_t dev, struct pbuf *p)
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enet_handle_t * enet_handle = &lpc_emac_device.handle;
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ENET_Type *enet_base = lpc_emac_device.base;
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uint8_t * data;
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uint16_t len;
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RT_ASSERT(p != NULL);
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RT_ASSERT(enet_handle != RT_NULL);
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@ -454,11 +456,13 @@ rt_err_t lpc_emac_tx(rt_device_t dev, struct pbuf *p)
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}
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}
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data = (uint8_t *)ENET_ALIGN(&lpc_emac_device.RxDataBuff[lpc_emac_device.txIdx * ENET_ALIGN(ENET_RXBUFF_SIZE)]);
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pbuf_copy_partial(p, data, p->tot_len, 0);
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// fix RxDataBuff -> TxDataBuff, ENET_RXBUFF_SIZE -> ENET_TXBUFF_SIZE
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data = (uint8_t *)ENET_ALIGN(&lpc_emac_device.TxDataBuff[lpc_emac_device.txIdx * ENET_ALIGN(ENET_TXBUFF_SIZE)]);
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len = pbuf_copy_partial(p, data, p->tot_len, 0);
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lpc_emac_device.txIdx = (lpc_emac_device.txIdx + 1) / ENET_TXBD_NUM;
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result = ENET_SendFrame(enet_base, enet_handle, data, p->len);
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// fix 'p->len' to 'len', avoid send wrong partial packet.
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result = ENET_SendFrame(enet_base, enet_handle, data, len);
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if ((result == kStatus_ENET_TxFrameFail) || (result == kStatus_ENET_TxFrameOverLen) || (result == kStatus_ENET_TxFrameBusy))
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{
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@ -407,6 +407,22 @@ rt_err_t mci_hw_init(const char *device_name)
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rt_kprintf("SD_Init failed!\n");
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return -RT_ERROR;
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}
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/*
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follow the page: https://community.nxp.com/thread/454769
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The issue concerns sdmmc library bug (I finally solved) in SD_Init() in the file sdmmc/src/fsl_sd.c:SD_SelectBusTiming()
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calls SD_SwitchFunction() which sets block size to 64bytes (512bits).Therefore SD_SetBlockSize(card, FSL_SDMMC_DEFAULT_BLOCK_SIZE)
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should be called again before SD_Init() exits.
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*/
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if (kStatus_Success != SDMMC_SetBlockSize(_mci_device->card.host.base, _mci_device->card.host.transfer, FSL_SDMMC_DEFAULT_BLOCK_SIZE))
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{
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SD_Deinit(&_mci_device->card);
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memset(&_mci_device->card, 0U, sizeof(_mci_device->card));
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rt_kprintf("SD_Init failed!\n");
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return -RT_ERROR;
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}
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/* initialize mutex lock */
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rt_mutex_init(&_mci_device->lock, device_name, RT_IPC_FLAG_FIFO);
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