Hi, can any one plz help me to solve fatfs read problem?
I am using Cortex-M3 luminary lm3s6965 controller. My application is such that I am writing 100-150k data(1024 bytes at a time; i.e. using for loop), in single .csv file, in 4GB micro SD card using fat16. and it is working perferctly.
Bt when I am trying to read data from sd card(1024 bytes at a time), then it will read data upto 65535 bytes and then it gets hang.
So can i read complete 100-150k data from sd card.
Could any body help? Thanks in advance...
"So what is real problem?"
That you don't seem to like to perform any debugging.
Haven't you taken a closer look at the low-level SPI code and seen if it does what it should?
I'm not too impressed with an implementation that requires the interrupts to be disabled while you read 1023 bytes - that's a significant amount of time, which means serial ports, timers etc will not be properly serviced during this time. Maybe you don't use other time-critical peripherial hardware, but real-world applications normally do. Correct code should only need to turn off interrupts around a few processor instructions, when something needs to be performed atomically.