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I am new to ARM Cortex 4 and to ADSP-CM403F. I worked with AVR stuff and was able using SD cards with SPI, AVR-GCC. I am working on a schematic for the 120pin ADSP-CM403F chip. To be able to code for MicroSD I will have to connect the right pins of the card to the CPU. Unfortunately I did not find an example yet to see if its possible using 4 data lines as SDIO offers. In the data sheet Rev. A november 2015 there are signals like SPI clock, SPI data 2, SPI data 3. I cannot see SPI data 0 or data 1.
Can anybody please give me a hint where to find an example how to add a MicroSD card (and also a QSPI flash, SRAM) to this chip including a simple C example code? Thank you very much !
"Dealing with the peripherals on an ARM chip is really no different to dealing with the peripherals on an AVR or any other microcontroller - it's all just about reading & writing registers."Yes. I know how to access a MicroSD card with one channel SPI and AVR. But I did not do yet with a 4 channel SPI. I read the data sheets of the SD card and the data sheet from ADI. But unfortunately its still not clear for me where to connect CMD to. I still search for an example. Hopefully at ADI there will be somebody willing to help here.