Freertos tcp sdio dma write tx overwritten - FreeRTOS

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This is a read only archive of threads posted to the FreeRTOS support forum. Use these archive pages to search previous posts. New forum support threads can be started at the FreeRTOS forums.

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Freertos tcp sdio dma write tx overwritten

Posted by anithraj1 on July 18, 2018

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

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