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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>
This commit is contained in:
zheng-chow 2018-06-04 18:14:59 +08:00
parent 666d39c093
commit ed75173cac
2 changed files with 23 additions and 3 deletions
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10
bsp/lpc54608-LPCXpresso/drivers/drv_emac.c
View File

@ -434,6 +434,8 @@ rt_err_t lpc_emac_tx(rt_device_t dev, struct pbuf *p)
ENET_Type *enet_base = lpc_emac_device.base;
uint8_t * data;
uint16_t len;
RT_ASSERT(p != NULL);
RT_ASSERT(enet_handle != RT_NULL);
@ -454,11 +456,13 @@ rt_err_t lpc_emac_tx(rt_device_t dev, struct pbuf *p)
}
}
data = (uint8_t *)ENET_ALIGN(&lpc_emac_device.RxDataBuff[lpc_emac_device.txIdx * ENET_ALIGN(ENET_RXBUFF_SIZE)]);
pbuf_copy_partial(p, data, p->tot_len, 0);
// fix RxDataBuff -> TxDataBuff, ENET_RXBUFF_SIZE -> ENET_TXBUFF_SIZE
data = (uint8_t *)ENET_ALIGN(&lpc_emac_device.TxDataBuff[lpc_emac_device.txIdx * ENET_ALIGN(ENET_TXBUFF_SIZE)]);
len = pbuf_copy_partial(p, data, p->tot_len, 0);
lpc_emac_device.txIdx = (lpc_emac_device.txIdx + 1) / ENET_TXBD_NUM;
result = ENET_SendFrame(enet_base, enet_handle, data, p->len);
// fix 'p->len' to 'len', avoid send wrong partial packet.
result = ENET_SendFrame(enet_base, enet_handle, data, len);
if ((result == kStatus_ENET_TxFrameFail) || (result == kStatus_ENET_TxFrameOverLen) || (result == kStatus_ENET_TxFrameBusy))
{

16
bsp/lpc54608-LPCXpresso/drivers/drv_sd.c
View File

@ -408,6 +408,22 @@ rt_err_t mci_hw_init(const char *device_name)
return -RT_ERROR;
}
/*
follow the page: https://community.nxp.com/thread/454769
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.
*/
if (kStatus_Success != SDMMC_SetBlockSize(_mci_device->card.host.base, _mci_device->card.host.transfer, FSL_SDMMC_DEFAULT_BLOCK_SIZE))
{
SD_Deinit(&_mci_device->card);
memset(&_mci_device->card, 0U, sizeof(_mci_device->card));
rt_kprintf("SD_Init failed!\n");
return -RT_ERROR;
}
/* initialize mutex lock */
rt_mutex_init(&_mci_device->lock, device_name, RT_IPC_FLAG_FIFO);
/* create finish event */