CMSIS-Driver defines generic peripheral driver interfaces for middleware making it reusable across a wide range of supported microcontroller devices. The API connects microcontroller peripherals with middleware that implements for example communication stacks, file systems, or graphic user interfaces. More information and usage methord please refer to http://www.keil.com/pack/doc/cmsis/Driver/html/index.html.The cmsis_i2c_dma_b2b_transfer_master example shows how to use i2c driver as master to do board to board transfer with DMA:In this example, one i2c instance as master and another i2c instance on the other board as slave. Master sends a piece of data to slave, and receive a piece of data from slave. This example checks if the data received from slave is correct.

CMSIS-Driver defines generic peripheral driver interfaces for middleware making it reusable across a wide range of supported microcontroller devices. The API connects microcontroller peripherals with middleware that implements for example communication stacks, file systems, or graphic user interfaces. More information and usage methord please refer to http://www.keil.com/pack/doc/cmsis/Driver/html/index.html.The cmsis_spi_interrupt_b2b_transfer_master example shows how to use CMSIS spi driver as master to do board to board transfer with interrupt:In this example, one spi instance as master and another spi instance on the other board as slave. Master sends a piece of data to slave, and receive a piece of data from slave. This example checks if the data received from slave is correct.

The Simple Match Interrupt project is to demonstrate usage of the SDK CTimer driver with interrupt callback functionsIn this example the upon match and IO pin connected to the LED is toggled and the timer is reset, so it would generate a square wave.With an interrupt callback the match value is changed frequently in such a way that the frequency of the output square wave is increased gradually.

The DMA channel chain example is a simple demonstration program that uses the SDK software.The purpose of this example is to show how to use the DMA channel chain feature.

This example shows how to use DMA to transfer data from DMIC to memory.

The i2c_interrupt_b2b_transfer_master example shows how to use i2c driver as master to do board to board transfer with interrupt:In this example, one i2c instance as master and another i2c instance on the other board as slave. Master sends a piece of data to slave, and receive a piece of data from slave. This example checks if the data received from slave is correct.

The LED Blinky demo application provides a sanity check for the new SDK build environments and board bring up. The LED Blinky demo uses the systick interrupt to realize the function of timing delay. The example takes turns to shine the LED. The purpose of this demo is to provide a simple project for debugging and further development.

The lpc_adc_interrupt example shows how to use interrupt with LPC ADC driver.In this example, the internal temperature sensor is used to created the input analog signal. When user type in any key from the keyboard, the software trigger API is called to start the conversion. Then it polls the flag variable which would be asserted when the conversion completed ISR is executed. Then just print the conversion result to terminal.Project Information1.what are ADC conversion sequences? A conversion sequence is a single pass through a series of A/D conversions performed on a selected set of A/D channels. Software can set-up two independent conversion sequences, either of which can be triggered by software or by a transition on one of the hardware triggers. Each sequence can be triggered by a different hardware trigger. One of these conversion sequences is referred to as the A sequence and the other as the B sequence. It is not necessary to employ both sequences. An optional single-step mode allows advancing through the channels of a sequence one at a time on each successive occurrence of a trigger. The user can select whether a trigger on the B sequence can interrupt an already-in-progress A sequence. The B sequence, however, can never be interrupted by an A trigger. 2. How to use software-triggered conversion? There are two ways that software can trigger a conversion sequence: 1. Start Bit: The first way to software-trigger an sequence is by setting the START bit in the corresponding SEQn_CTRL register. The response to this is identical to occurrence of a hardware trigger on that sequence. Specifically, one cycle of conversions through that conversion sequence will be immediately triggered except as indicated above. (In this example, we use this way.) 2. Burst Mode: The other way to initiate conversions is to set the BURST bit in the SEQn_CTRL register. As long as this bit is 1 the designated conversion sequence will be continuously and repetitively cycled through. Any new software or hardware trigger on this sequence will be ignored. 3. What kinds of interrupt do ADC have? There are four interrupts that can be generated by the ADC: • Conversion-Complete or Sequence-Complete interrupts for sequences A and B • Threshold-Compare Out-of-Range Interrupt • Data Overrun Interrupt Any of these interrupt requests may be individually enabled or disabled in the INTEN register. Program Flow1.This example demonstrates how to configure the A sequences with interrupt, assigning one channel with software trigger, you can configure channel via "DEMO_ADC_SAMPLE_CHANNEL_NUMBER". 2.Before configuration of the ADC begins, the ADC is put through a self-calibration cycle. 3.Enable the Conversion-Complete or Sequence-Complete interrupt for sequences A. 4.After ADC channels are assigned to each of the sequences, if the user enters any key via terminal, software trigger will start. 5.When the conversion completes, the interrupt would be triggered. The ISR will print conversion result to terminal.

The example shows how to use USBD ROM stack to create and USB AUDIO class device. This device supports 2 channels audio in.

The spi_interrupt example shows how to use spi functional API to do interrupt transfer:In this example, one spi instance as master and another spi instance as slave. Master sends a piece of data to slave,and check if the data slave received is correct.