fopen write error sdmmc

I am driving a 32 GB SD card with Keil MDK5 Flash File System v6.14.1 with core LFN debug mode. Init, Mounting, and also read operations from SD card works properly. But creating or deleting a file and...
fopen write error sdmmc

I am driving a 32 GB SD card with Keil MDK5 Flash File System v6.14.1 with core LFN debug mode. Init, Mounting, and also read operations from SD card works properly. But creating or deleting a file and...
problem with SPI & MAX6662 (at89s8252)

I have problem with implementing MAX6662 chip. I have already interfaced ds1306 rtc with 3wire serial interface and it works. The problem is that the max6662 uses non usual spi interface. There are no...
problem with SPI & MAX6662 (at89s8252)

I have problem with implementing MAX6662 chip. I have already interfaced ds1306 rtc with 3wire serial interface and it works. The problem is that the max6662 uses non usual spi interface. There are no...
AT89S8252 Interrupt based SPI Communication

I am trying to send bytes from UART & SPI by involving ISR. Since there is no SPI simulation available in KEIL. For debuging purpose i toggle a pin after sening one byte from SPI port & then from UART...