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In this tutorial we will check how to obtain temperature measurements from a DHT22 sesnor using the ESP32, the Arduino core and timer interrupts. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board, and a DFRobot DHT22 module. Introduction In this tutorial we will check how to obtain temperature measurements from a DHT22 sensor …
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In this tutorial we will check how to interact with a PIR motion sensor using an interrupt based approach, using the Arduino core running on the ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board, and a DFRobot’s PIR sensor module. Introduction In this tutorial we will check how to interact with …
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In this ESP32 tutorial we will check how to use structs as items in FreeRTOS queues. This will allow us to store more complex messages in queues, facilitating the process of inter-task communication. The tests were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction In this ESP32 tutorial we will check how to use …
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In this ESP32 tutorial, we will check how to use the pthreads library on the Arduino core and create a simple testing program. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction In this ESP32 tutorial, we will check how to use the pthreads library on the Arduino core …
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In this post we will do a simple analysis of the performance of inserting and consuming items from a FreeRTOS queue. The tests were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction In this post we will do a simple analysis of the performance of inserting and consuming items from a FreeRTOS queue. Note that …
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The objective of this post is to explain how to use FreeRTOS queues to communicate between two different tasks. The tests were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction The objective of this post is to explain how to use FreeRTOS queues to achieve inter task communication, using the Arduino core. Besides communication amongst …
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The objective of this post is to explain how to check how many messages are available on a FreeRTOS queue, without consuming them. We will also check how to use the API to get how many free spaces are still available on the same queue. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device …
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The objective of this post is to explain how to insert content in the front and back of a FreeRTOS queue. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction The objective of this post is to explain how to insert content in the front and back of …
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The objective of this post is to give an introduction to FreeRTOS queues, using the ESP32 and the Arduino core. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. Introduction The objective of this post is to give an introduction to FreeRTOS queues, using the ESP32 and the Arduino core. …
The objective of this post is to implement a simple power calculation algorithm on the ESP32 and test the speedup by executing it in the two cores of the microcontroller. Introduction The objective of this post is to implement a simple power calculation algorithm on the ESP32 and test the speedup by executing it in …
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