Video working with you will Pico processor in the Arduino ID. In this video, we will first take a look at the features of the UL p coprocessor. Later, we will prepare the Arduino ID to compile assembly code for the UL p coprocessor. And finally, we will look at how a basic sketch folder of a project using the up coprocessor looks like. The deep sleep in the ESP 32 is a fantastic feature, especially in the field of IoT, where each and every milliampere is considered. Even though the ESP 32 do not consume a lot of energy in this mode.

It is totally useless and non responsive during deep sleep. This is why espresso included a mysterious ultra low power coprocessor which is active even when the main processor sleeps. When you go through the documentation, it is clear that there are several limitations. Using that you will be called processor. The first issue was that the core processor needed to be coded in assembly language. So in this video, let's look at how we can program this core processor without going out of the Arduino ID.

First let's look at the features of this you will be called processes. The you will be called processor is a simple finance state machine processor. It has four general purpose 16 bit registers with a 32 bit memory addressing the you will be coprocessor can wake up the ESP 32 main cores from sleep. It can also do basic functions of a microcontroller, like read and set pin, read analog values using the ADC and also read ITC sensors. It has access to RTC slow memory regions, registers in RTC controller and also access to The RTC GPIO pins. It also uses a 32 bit instruction set in assembly language.

First we need to prep the Arduino ID so that we can program that you will Pico processor. It is not as straightforward as installing a library. Follow the steps to install the Alp repository for the Arduino ID properly. Download the repository created by Duff 2013 from the link given in the resources section. Now extract the file and rename the folder to just you LP tool. Download and extract the latest ESP 32 toolchain for from the second link given in the resources section.

Make sure you download the tool chain specific to your operating system. I'm downloading the source code zip file for the Windows operating system makes fine your ESP 32 code directory which Arduino ID eight uses I'm showing you the usual directories where it can be found on all major operating systems. Now mo the EU LP tool folder to the tools folder inside the ESP 32 core directory. Copy the platform dot local dot txt file to the following folder inside the hardware folder inside the ESP 32 code directory. Next, move the tool chain folder you have extracted earlier to src folder inside the UL p tool folder you copied earlier. Copy that you will p underscore examples folder inside the src folder and paste it in the folder where you usually save your Arduino sketches.

The tool chain in that is available by default in the Arduino ESP 32 core is for the extensor main processor, and it's incompatible with the up core processor. This is why we have installed a new tool chain In the up to library, the you will be tool will use the tool chain to build and compile the you LP assembly code in the Arduino and upload it to the board. Now let's learn how to make a sketch folder for the up core processor. It's quite different from your normal Arduino sketch, I will teach you with an example code I created. Download the up underscore ADC sketch folder. From the resources section and extracted you will see basically three files, one header file, one assembly file and one dot Arduino file.

The header file consists of all the headers of the libraries we included for deep sleep the.es file consists of the assembly code that will run on the Pico processor and finally, dot i n o file consists of the main task to be done, but the ESP 32 main course once they are woken up by the youth The core processor to run a ul PE program. The main application needs to load the UL PE program into artists in memory using you LP underscore load underscore binary function. Once the program is loaded into artists in memory, the application can start it by passing the address of the entry point to you will be underscore run function. Once the up underscore run function is called the RTC timer starts the program runs until it encounters a halt instruction or an illegal instruction. Once the program house you will be coprocessor powers done and the timer is started again.

It is highly recommended that you thoroughly go through the instruction set reference provided in the UEFI coprocessor programming documentation before going to the next video have provided some links for understanding instruction sets in the US will be coprocessor summary. In this video we have covered the following topics, the features of the up core processor preparing the Arduino ID for compiling, you will be core processor assembly code, how to create a basic sketch folder for you will pay coprocessor programming. In the next video, we take an in depth look at you will pay core processor programming