Freertos tcp sdio dma write tx overwritten
Hi All,
i am using STM32f746NE,
a)
where i am doing sd card write operation 342 Mb, write fails and gets the following log on terminal
prvFFWrite: 16947: 5 (TXUNDERRUN: Transmit FIFO underrun)
prvFFWrite: 16947: 5 (TXUNDERRUN: Transmit FIFO underrun)
prvFFWrite: 1: 5 (TXUNDERRUN: Transmit FIFO underrun)
prvFFWrite: 16947: 5 (TXUNDERRUN: Transmit FIFO underrun)
prvFFWrite: 1: 5 (TX_UNDERRUN: Transmit FIFO underrun)
b)
, the same file in sd card read successly to my PC through Filezilla,
c)
read and write works only few Kb
any idea what could be issue
conditions :
1. am using DMA buffer in 512 buffer which is internal SRAM2 32 alligned