Programmer Think

1, Experimental principle Analysis: the clock is 84Mhz, the frequency is 84, the ARR is set to 500, the clock obtained by the counter is 84M/84=1 Mhz, and the counting time is 0.5ms In the main function, the modification time I set is 2ms once. As shown in the figure, set PWM1 mode, and the output polarity low level is valid. That is, when t ...

All ideas come from this blog: [chuangkehai] [operating system principle and embedded UCOS-II teaching video collection] [one week series] And µ C/OS-II tutorials Analysis of startup process of UCOS II system In embedded system, startup is divided into hardware startup and software startup. For example, there are many ARM cores. Har ...

1. Background Since the official version of rockdoc is available in the cloud environment, rockdoc has to be used as the real-time image of the company's own version, but it is not installed in the cloud environment. According to the release of StarRocks official website, ARM environment is supported in version 2.0, so it starts to scratch the ...

STM32 learning from scratch @EnzoReventon Detailed explanation of CAN communication code Related links: STM32 learning from scratch - physical layer of CAN communication protocol CAN bus specification v2 0 version Introduction to CAN bus Zhou Ligong - Chinese version of CAN protocol reference material: [wildfire EmbedFire] practical guide f ...

For the introduction of UBI, please refer to the official documents http://www.linux-mtd.infradead.org/doc/ubifs.html The following is a brief introduction. UBIFS relies on the kernel UBI subsystem and runs on MTD devices. UBI can manage its own partitions in applications For an introduction to SSD202, please refer to another blog post At ...

preface The chip STM32H750 is used in a recent project. Its on-chip flash is only 128KB in size (although it is said on the Internet that it actually has 2MB as H743, this method is not used for insurance). Because the project uses RTOS, LWIP, TLS, etc., and the generation program is relatively large, W25Q32 (4MB in size) is added as off chip ...

1, Environmental preparation Compilation environment: Ubuntu 20 . 04 (Download address: https://ubuntu.com/download/desktop) QT Source code( QT5.9.5 Download address: https://download.qt.io/archive/qt/5.9/5.9.5/) Cross compiler( arm-2014.05) 2, Compilation preparation 1.decompression qt Source code 2.Configure the path of the cross compiler ...

This paper introduces how to use STM32F107VC(Waveshare Open107V experimental board) to realize high-precision pulse width meter (duty cycle). Development environment: IDE: STM32CubeIDE 1.8 Firmware library: stm32cube_ FW_ F1_ V1. eight point four Function generation: RIGOL DG5072 function signal generator generates 0-3.3V square wave, 10KHz ...

Message and message bus Application a is connected to the message bus, which obtains a well-known common name (recorded as connection a). In application a, object A1 provides interface I1, and interface I1 has method M1. When application B is connected to the message bus, it is required to call method M1 of interface I1 of object A1 on connect ...

Continue to pay attention to Ajie's online update of nanny notes ~ ~ adhere to the daily shift Reference: STM32 Chinese reference manual V10 - Chapter 9 interrupts and events catalogue 1, NVIC interrupt priority grouping Interrupt priority packet register Describe the difference between preemption priority and response priority: Interru ...