Posted on October 24, 2016 at 03:17
I'm working with STM32L476 trying to get a microSD card to communicate. Initially I'm sure I was getting a response, but now when I send CMD8 the chip does not see a respons from the card (SD_CMD_RSP_TIMEOUT)....
Posted on January 12, 2017 at 23:24Sorry I don't recall the models at this time. Mixza 8GB SD card was one andthere were others. If its important I can test it again sometime.Here is the reference to the SD specification:The host shall supply power ...
Posted on October 30, 2016 at 02:51Went through all the SDMMC1 registers and they look ok: - PWRCTRL 11 (on) - WIDBUS 00 (1b wide bus) - PWRSAV/BYPASS 0 - CLKEN 1 (enabled) - CLKDIV (tried various up to 0xFE, no change) - ARG = 0x1AA which is right ...
Posted on October 27, 2016 at 07:16Why are you enabling the usart twice? that doesn't seem right. ''If I send any character to STM, then it would receive it and send back to my computer. But I couldn't receive anything.'' Can you clarify? So with th...
Posted on October 24, 2016 at 04:27There is a FatFS ramdisk example in STM32F4 cube software package. I don't think it has any flash examples, thats a bit more complex. Although there are app notes on that subject.http://www.st.com/content/st_com/en...
