Write summaries, discuss careers, and win DJI drones, Redmi tablets, Huawei headphones, and JD cards! This article is from the Breadboard Community’s “Lingdong Mini-F5333 Development Board” free evaluation activity. 【Purpose of Experience】Light up the OLED screen and learn to use I2C peripherals. 【Experimental Equipment】 MIN-F5333 Development Board OLED Display Screen 【Implementation Steps】 1. Copy the … Read more
There has been a rumor circulating that the STM32 hardware I2C design has bugs, and it is better not to use it, as software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have never used hardware I2C, mainly because software I2C is also quite convenient and can be used on … Read more
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Follow+Star Public Account Number, don’t miss the wonderful content Author | strongerHuang WeChat Public Account | strongerHuang 1. Should I choose register development for STM32, or the Standard Peripheral Library? 2. Do you have the STM32L0 Standard Peripheral Library? 3. What are the differences between HAL and LL libraries? … Now, let’s discuss the four … Read more
Recently, a friend and I discussed some strange aspects of the FreeRTOS code generated by STM32CubeMX. void LED01Tog(void const * argument){ /* USER CODE BEGIN LED01Tog */ /* Infinite loop */ for(;;) { HAL_GPIO_TogglePin(GPIOF,GPIO_PIN_10); osDelay(500); } /* USER CODE END LED01Tog */} We added two LED toggle functions, compiled our code, and found that the … Read more
Source | Mculover666 To develop “advanced” applications based on RTOS, many principles of the kernel must be mastered. This article will explain how the RTOS kernel manages interrupts? How should users write interrupt handler functions? And how can users set critical sections? 1. Review of Knowledge — Interrupts 1.1. Interrupt Mechanism The interrupt mechanism is … Read more
1. From Polling to Interrupt Many students prefer polling over interrupt-driven operations. Is this related to our nature? Everyone likes to have everything under control and dislikes being interrupted. We often have experiences where we are talking to someone and suddenly receive a phone call, and after the call, we can’t remember what we were … Read more
Click the card below to follow Android System Engineer No Pain, No Gain! 1. Introduction Learning Philosophy: Understand one knowledge point at a time Difficulty: ★★★☆☆ Source Code Environment: Android 9.0+ Hardware Environment: Qcom Reading Time: 2 minutes Some classmates in the group have raised questions about HIDL and AIDL. In response to these questions, … Read more
There has been a rumor circulating: The hardware I2C design of STM32 has a bug, and it is better not to use it; using software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have not used hardware I2C, mainly because software I2C is also quite convenient, and can be used … Read more