Posted on June 05, 2015 at 19:54I was able to compile and run the code provided by Tilen from
http://stm32f4-discovery.com/2014/07/library-21-read-sd-card-fatfs-stm32f4xx-devices/
,
So I can mount , write and read data from file. But when I measured the throughput the measurement was very disappointing for read operation I got only 500KB/s which is lame for an SDIO operation,
I calculated the throughput but toggling a GPIO before and after read/write operation, for example
GPIO_SetBits(GPIOD,GPIO_Pin_4);
f_write(&fil,data_buffer,10240,&written)
GPIO_ResetBits(GPIOD, GPIO_Pin_4);
Is there something that I need to do , in-order to get a better throughput about 5-7MB/s
#stm32 #dma #!stm32f4-disco #fatfs #sdio #sd
