The RTC demo application demonstrates the important features of the RTC Module by using the RTC Peripheral Driver.The RTC demo supports the following features:- Calendar + Get the current date time with Year, Month, Day, Hour, Minute, and Second. + Set the current date time with Year, Month, Day, Hour, Minute, and Second.- Alarm + Set the alarm based on the current time. + Application prints a notification when the alarm expires.- Seconds interrupt + Use second interrupt function to display a digital time blink every second.

The RTC demo application demonstrates the important features of the RTC Module by using the RTC Peripheral Driver.The RTC demo supports the following features:- Calendar + Get the current date time with Year, Month, Day, Hour, Minute, and Second. + Set the current date time with Year, Month, Day, Hour, Minute, and Second.- Alarm + Set the alarm based on the current time. + Application prints a notification when the alarm expires.- Seconds interrupt + Use second interrupt function to display a digital time blink every second.

The SAI Demo application demonstrates complicated digital audio playback and record case. The demo provide these features below:1. Duplex audio transfer, record and playback at same time.2. Playback a 250 Hz sine wave data generated by CMSIS-DSP library. Also compute the fundamental frequency using Fast Fourier Transform with CMSIS-DSP library.3. Record a 5 seconds audio to sdcard with a FatFs system. After record, playback it. This feature may only existed in platform which support sdhc.

The sai_edma_record_playback example shows how to use sai driver with EDMA: In this example, one sai instance record the audio data from input and playbacks the audio data.

The sai_edma_transfer example shows how to use sai driver with EDMA:In this example, one sai instance playbacks the audio data stored in flash/SRAM using EDMA channel.

The sai_interrupt_record_playback example shows how to use sai driver with record and playback features: In this example, one sai instance record the audio data from input and playbacks the audio data.

The sai_interrupt_transfer example shows how to use sai driver with interrupt:In this example, one sai instance playbacks the audio data stored in flash/SRAM using interrupt.

The SAI Demo application demonstrates complicated digital audio playback and record case. The demo provide these features below:1. Duplex audio transfer, record and playback at same time.2. Playback a 250 Hz sine wave data generated by CMSIS-DSP library. Also compute the fundamental frequency using Fast Fourier Transform with CMSIS-DSP library.3. Record a 5 seconds audio to sdcard with a FatFs system. After record, playback it. This feature may only existed in platform which support sdhc.

The sdramc example shows how to use SDRAM controller driver to initialize the external SDRAM chip.After the SDRAM initialization, SDRAM address access is very simple.

The Shell Demo application demonstrates to control Leds by commands.