This article describes Queue Data Structures previously written in the Python Queue Data Structure article and is frequently used with the MicroPython example, but this article is written in C via Arduino IDE to use with microcontroller board LGT8F328P, SAM-D21, ESP8266, ESP32 and ESP32-S2 as shown in Figure 1 by using an example of the array structure and a single link list as a queued data structure. This article is probably the last article on JarutEx.
This article describes a stack data structure to write programs in C on various platforms using a single linked list data structure as a stack data store with examples of the array as storage and test the operation with the microcontroller board LGT8F328P, SAM-D21, ESP8266, ESP32 and ESP32-S2 as shown in Figures 1 and 2. In case of wanting to use with other platforms, you can still modify the code for use such as the same.
This article describes the use of the ST7735s module with the ESP32-S2 microcontroller via the TFT_eSPI library. We have previously discussed its implementation with the ESP32 and STM32F103C microcontrollers, and the chosen TFT module as REDTAB80x160 (added code for GREENTAB80x160 at the end of the article), but you can adjust the settings to other modules, see the User_Setup.h file of the TFT_eSPI library as shown in Figure 1.
After testing the DAC and ADC of both the ESP32, SAM-D21, LGT8F328P and STM32L432KC, This time, it’s the time of the ESP32-S2 that we have. The test performance is still the same as before using the DAC. Three types of waves are sent out: zigzag, triangular, and sine waves and connect to the ADC pin to read the value and test the graph to see what it looks like.
In this experiment, DAC1 is connected to the ADC as shown in Figure 1. The ESP32-S2 has 2 ports of 8-bit DAC called DAC1 and DAC2. The ADC has a 12-bit resolution, which is seen to have the same properties as the ESP32, but whether the results are the same or not, you can tell that they are probably different because they use different microcontrollers. The ESP32-S2 uses the same one as the ESP32-S3 with only one core and no BLE.
In the previous article, programming to implement queue-based data structures was introduced. In this article, we introduce programming to manage another type of data structure which has different storage and management methods called BST tree or Binary Search Tree, as shown in Figure 1, which is a structure that can be applied to data collection with attributes in which the data in the left branch is less than itself and the right branch is greater than itself or the opposite, i.e. the left branch has a greater value and the right branch is less. It enables searching for data in cases where the tree is balanced on the left and right in the BST structure, saving half the time or number of search times per round of available data, e.g. 100 data sets in the first round if it is not the information you are looking for will be left with a choice to find from the left or right branches which the selection causes the information of the other side is not considered or cut off approximately half. However, if the Binary Search Tree is out of balance, the search speed is not much different from the sequential search.
In this article, we use Python that works on either a Python 3 or MicroPython interpreter to store the data, adding information ,searching for information as an example of further development.
This article discusses compiling and using MicroPython for an esp32-s2 microcontroller based on the TTGO ESP32-S2 V1.1 or TTGO ESP32-S2-WOOR V1.1 board with a Type-C USB port and supports operation via CH340C and OTG by using a dip switch as shown in Figure 1, enabling MicroPython to be used because the chip program uses the CH340’s circuit programming and Python programming requires a port that works like OTG
The article discusses the use of communication developed by espressif to communicate between its microcontrollers via wireless communication, as an alternative to the development of a non-linear Client/Server system. It describes the working process of working as a service provider, commander, and a set of related instructions through the Arduino core, along with explaining the working examples that come with both Arduino cores, which are basic and Multi-slave, which can be applied variously.
