Dear friends
I have a project with LPC1788 where I need to read an audio file from a SD card and play it using DAC unit. The two requirements of the project are to use a file system (FAT is preferred) and the SD card interface of the MCU (not SPI interfacing).
I really do not know where to start. I could not find any sample codes or examples and I am totally lost in those vague code parts over the internet.
PS. I should not use multitasking environment.
Your help is highly appreciated.
Break the problem into smaller pieces you can solve.
Can you output audio data to the DAC now and play sounds?
Do you understand audio file formats outside the LPC1788. Have you looked at the structure of .WAV files and PCM data formats, for different frequencies, channels, bit size?
Any LPC17xx series boards from assorted vendors with SDIO implementations and examples?
Does Keil have some libraries or middleware you can use or review?
Some times when code doesn't fall out of Google you have to sit down, read the manuals, find other examples, and port them to your specific board and chip.
Sit down and discuss your projects with the people who set them, they are best placed to provide the support, advice and training required to complete the work.