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rt_ssize_t can give negative error code, which follows the unix style correctly
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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 <[email protected]>
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- fix 10 or hard duplex not work
- rewrite tx/rx function
- update emac init function
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1. Change the type of cmd to 'int';
2. Remove RT_LWIP_USING_RT_MEM macro;
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