stm32 programming

Each Io of stm32 can be used as the interrupt input port for external interruptions, which is also powerful for stm32. The Interrupt Controller of stm32f103 supports 19 External Interrupt/Event requests. Each interrupt has a status bit, and each interrupt/event has its own trigger and shield settings. Stm32f103 19 external interruptions: Line 0 ~ 15: the input of the corresponding external IO port is interr

Meanings of stm32 clock system: 1. Power Switch to achieve low power consumption; 2. Adjust the clock speed; For each peripheral, you must set the clock system of stm32 to reduce power consumption;Analysis of stm32 clock system block diagram: clock source: The clock is the pulse of stm32 and the driver source. When usi

Hardware: An stm32 Development Board, St-link/v2 I. hardware related: 1. Pin Connection: Pin7 Pin9 Pin20/pin18 Pin19 2. Set in Keil: 1) In debug, select St-link Debugger 2) Select the St-link debugger and select Settings. 3) select Flash download and add programming algroithm. (I am using a chip of stm32f10x) 2. Software related: Click here: Then you can se

publishing commercial products involving copyright issues requires a hefty royalty fee, which is a huge expense for small and medium-sized companies. Therefore, the search for Keil uvision alternative solutions.Because Eclipse is an open source development platform and supports the development of various plug-ins, it is possible to build an open source development platform in Eclipse + CDT + Yagarto + j-link.Eclipse is an open source, free, cross-platform, integrated development environment tha

Related articles: * Linux Configuration Stm32 Development Environment Overview 2017/7/9 UPDATEDhighly recommended use of Coide+gnu ARMG tool chain Development STM32, all is one-click to create a new complete project, not like in the Keil MDK modify the change that so troublesome, the most important is coide and GNU ARM Embedded Tooltrain are free, there is no infringement problem, Almost all projects under

1. Enumerate the USB STM32 as HID devices. 2. STM32 uses 3 endpoints, endpoint 0 for enumeration, endpoints 1 and 2 for data sending and receiving. 3. The endpoint length is 64, that is, a maximum of 64 bytes of data can be transmitted in a single pass. 4. STM32 obtains the data from the host computer and returns the data via USB and prints out the data. 5. The h

Differences and links between register and Firmware Library Development The Firmware Library is a set of functions. The function of the Firmware Library is responsible for directly dealing with registers and providing APIs called by the user functions ). During 51 development, we often operate registers directly. For example, to control the status of some IO ports, we directlyOperation register:P0 = 0x11;During the development of stm32, we can also

0. Preface LWIP-related code was compiled last year (2013) and "streaking" on stm32 was successful. I have never had time to sort it out in depth. Here I will use a blog to sort out the summary. The LWIP porting process involves a lot of details, and it is impossible for a blog post to explain the specific parts only to the end. [Key Points] [1] LWIP porting without the operating system. The LWIP version is 1.4.1. [2] The MCU is stm32f103ve, And the N

Beginner STM32, feel the most egg pain is its clock system, every time see its clock tree is a bit dizzy, although read a lot of this information, even has written a lot of STM32 module code, did some small project, but always still on this piece of vague, indefinitely, So I want to write a little bit of my knowledge of it, step-by-step, until the day of full straightened out, (these things are not original

in the STM32 if the external crystal is not used, osc_in and the Osc_out the method of connectionIf using an internal RC oscillator without an external crystal, proceed as follows:1) for 100 feet or 144 feet of products, osc_in should be grounded, osc_out should be suspended.2) for products with less than 100 feet, there are 2 kinds of mating methods:2.1) Osc_in and Osc_out are grounded by 10K resistors respectively. This approach can improve EMC perf

Stm32--eepromTenet: The learning of technology is limited and the spirit of sharing is limitless.First, I²c interface Read and write EEPROM ( AT24C02 )-Main mode, respectively, as the main transmitter and the main receiver. Ensure normal communication by querying for events.1 , I 2C Interface InitializationLike other peripherals for GPIO multiplexing, it calls the user function I2c_gpio_confi g () to configure the I/O port used by I 2 C, and then call

Recently used STM32 CRC32 module, look at the official website Lib, feel very simple to use. However, you will find that the direct use will appear, and many online CRC32 Web sites or PC-side CRC32 Verification Tool calculation results inconsistent!It's just no words ...A search, in the 21IC forum above on the use of STM32 CRC32 big discussion, but 09 years of Post. The main conclusion is that

, beside the keyboard remember, only comfort himself and share fellow yen Yau. There is no longer much to be said in this question.NVIC, a Chinese name nested interrupt vector controller, is a unique integrated unit within the CORTEX-M3 family of controllers that is tightly coupled to the CPU, reducing interrupt latency and enabling more efficient processing of subsequent interrupts. For example, such as railway station ticket, those railway station rules and regulations is Nvic, the students an

I. Overview of the ContentUsing STM32 internal USB controller outside the larger page NAND FLASH k9f1g08u0a implementation of a 128M u disk.1, STM32 USB controller 　　 stm32f103of theMCUcomes withUSBfrom the controller, in accordance withUSBspecification of communication connections;PCThe data transfer between the host and the microcontroller is accomplished by sharing a dedicated data buffer that can beUSBd