stm32f4

What is DMP? DMP refers to the MPU-6050 integrated internal processor, the direct output of four yuan, can reduce the workload of peripheral microprocessors, and avoid the cumbersome filtering and data fusion, DMP official Drive library, is based on MSP430, used to drive DMP. Theoretically, it can be ported seamlessly into the STM32F103 series and STM32F4 series. However, if you are unwilling to transplant yourself, you can draw on the four-axis DMP l

Bitbox:a small Open, DIY + bit VGA consoleHi all,I ' ve been developing a simple DIY console and a participant of the project and of this message board just told me Guys Could is interested about my little homemade console. Of course, it's all open hardware design software sources is available (on GitHub).It ' s a one-chip STM32F4 based console (+ a few passives), which has the following abilities:-640x480 @ 32768 colors, 60Hz VGA screen output-1M F

Sometimes you have a can equipped processor in a low cost board but it has no CAN transceiver chips.Here is a method, the can be used to create a small experimental network with such a board.There'll is no noise immunity and you might has to lower the speed ....But many experimenters has made this work satisfactorily.Use a signal diode similar to 1n914 or 1N4148.Power supply diodes usually do not has a fast enough recovery time for CAN to function.Modifying the

play of the problem. The above disadvantages will directly lead to a big increase in competition difficulty. The 2 type camera has the image channel integrity, easy to adjust the correlation parameter, may customize the input and output demand the characteristic, but its shortcoming is brings the computation quantity the rise and to the chip computation performance severe test. It is recommended to use the STM32F4 platform to drive the above camera.

Hardware platform: stm32f407 Library files: stm32f4xx_dsp_stdperiph_lib_v1.6.1 Serial: USART6 TX RX STM32F4 has two DMA controllers, mounted on the AHB bus, each DMA controller has eight stream, each stream has eight channel. A channel can use more than one stream at a time, and a stream cannot use multiple channel at the same time. Send data: 1. When the DMA sends the energy, and the data buffer has the data, sends the data 2.DMA send complete afte

library to generate initialization files and corresponding projects. In the Cubemx interface, after the selection and configuration of the various peripherals, in Project\project setting\advanced settiing The following graphical interface, you can choose the type of library to use: Hal/ll. In addition, occasionally people ask and where ll library, in fact, LL library function is in the same directory as the HAL library function. Take STM32F4 as a

);Gpiod->bsrrh = 0xf000;GPIOD-GT;BSRRL = 0x1000Delay (100);}} void Delay (uint32_t ntime){Gb_timingdelay = Ntime;while (Gb_timingdelay! = 0);}void Systick_handler (void){if (gb_timingdelay! = 0x00){gb_timingdelay--;}}*/ #include "Stm32f4_discovery.h"#include "stm32f4xx_conf.h"uint32_t Gb_timingdelay;void Delay (uint32_t ntime); Void Main () { systick_config (systemcoreclock/1000);//Set Systemtick one millisecond interrupt nbsp; /* //initialize LEDs mounted on

These two days have been debugging Stm32f4 TCP, and want to apply to Freemodbus TCP, so that my device can integrate network control. Because now most of the use of STM32 should use ST dedicated configuration software STM32 Cubemx to carry out the initial project of the program, there is a benefit, is to speed up the development progress, I am also here in this software development, I just to write down their use of the process,

Tags: Debug Blog official log preparation process download tool cross filesDebug with Eclipse+jlink STM32First, the preparatory work Install Eclipse + CDT. Install the cross-compilation tool (tool chain arm crosses GCC, then install the device library, the automatic download installation is slow, can be obtained after using the download tool (Thunderbolt speed is good) download, placed in the Eclipse download path manually installed) and make Tools (Gcc-arm-none-eabi-6-2017-q2-update-wi

The bug of ARM CMSIS DSP library function Arm_sin_cos_f32Wang Qiang2016-05-10I engaged in the development of power electronics products, using the STM32F4 series of CPUs, with floating-point operation, Park transformation or reverse transformation, the need to use the sin and cos, in order to facilitate the use of ARM_SIN_COS_F32 this function.This article is original and cannot be reproduced without the author's permission.1. Bug DiscoveryThe output

Normal PIN initialization/*****************************************************************************Stm32f0******************************************************************************/void Bell_init (void){Gpio_inittypedef gpio_initstruct;Rcc_ahbperiphclockcmd (Rcc_ahbperiph_gpioa, ENABLE);Gpio_initstruct.gpio_pin = gpio_pin_2;Gpio_initstruct.gpio_mode = Gpio_mode_out;Gpio_initstruct.gpio_speed = gpio_speed_level_2;GPIO_INITSTRUCT.GPIO_PUPD = gpio_pupd_up;Gpio_init (Gpioa, gpio_initstruct);

1, what is the STM32 function libraryThe above mentioned software library refers to "STM32 standard function library", it is provided by St Company for STM32 function interface, namely API (application program Interface), developers can call these function interfaces to configure the STM32 register, Enables developers to disengage from the lowest register operation;In fact, the library is the code that is erected between the register and the user-driven layer, processing the configuration direct

series instances:Https://yunpan.cn/cByHum5BStkEK access password 00a6Ucos based on STM32F3 series instances:https://yunpan.cn/cByHrMmkekIar access password Da90Ucos based on STM32F4 series instances:Https://yunpan.cn/cByHx47jehTgX access password 5a04Ⅳ, Related DownloadsThe download provided below is also the author's recent collation, if you are afraid of trouble can be in the author 360 cloud disk download. The author is also based on the download

Some of the system configuration parameters need to be saved in our project, which is characterized by a small number and no need for constant modification, but cannot be defined as constants, because each device may be different and may be modified at a later stage. This requires consideration of the problem of saving these parameters. It is convenient to have this type of data in the specified location and modify the value of the storage location directly when it needs to be modified. Given th

Recently in doing STM32F4 test development, use to keil,mdk512,mdk514,mdk520 ... Uh, uh, all kinds of entanglements, okay, it's all sorted out, share your experience here.Start Download installation package next-> All the way, no need to modify anything.In the configuration of the appropriate hardware pack package, the different MDK version of the pack package may be installed after the error, you should note. Generally MDK5.12 corresponds to 2.7.0 Th

of up to a low power performance in both operating and shutdown modes. stm32f411 new Bulk Data acquisition mode (BAM) optimizes data batching and boosts dynamic efficiency to a new level. This BAM enables bulk data exchange through the communication peripherals, while other parts of the device, including the CPU, can be in power-down mode.STM32F412 Chip Features:The STM32F412 microcontroller is the entry point for the high Performance STM32F4 series

. Dma_memoryinc=dma_memoryinc_enable; Dma_init. Dma_peripheraldatasize=Dma_peripheraldatasize_halfword; Dma_init. Dma_memorydatasize=Dma_memorydatasize_halfword; Dma_init. Dma_mode=Dma_mode_circular; Dma_init. Dma_priority=Dma_priority_high; Dma_init. Dma_fifomode=dma_fifomode_disable; Dma_init. Dma_fifothreshold=Dma_fifothreshold_halffull; Dma_init. Dma_memoryburst=Dma_memoryburst_single; Dma_init. Dma_peripheralburst=Dma_peripheralburst_single; Dma_init (DMA1_STREAM5,dma_init); Dma_cmd (DMA1_

CORTEX-M4 Core RegistersGoal: Visualizing what happens to the CORTEX-M4 core registers after resetHere's what happens after the processor is reset: General-purpose registers has unknown values in them Stack pointer register are loaded with th e value of the Initial SP value register located at 0x0000 (Vector Table) Link Regis ter'll has 0xFFFFFFFF program counter was loaded with the value of the Reset regis ter located at 0x0004 (Vector Table)

multiplier of N is out, a crossover factor of P (first output PLLP) or Q (the second output PLLQ) is required to divide the divider, Finally, the final primary PLL clock is generated. For example, our external crystal oscillator selection is 8MHz. At the same time we set the corresponding divider m=8, multiplier frequency multiplier coefficient n=336, divider divider factor p=2, then the main PLL generated the first output high-speed clock PLLP:Pll=8mhz * n/(m*p) =8mhz* 336/(8*2) = 168M Hz (Sou

at the moment, I think the biggest convenience of Stm32cube is that you can use STM32CUBEMX software to graphically configure peripherals. First posted on the official website of the PDF,Getting started with the STM32CUBEF4 firmware package for STM32F4 Series "UM1730 User Manual".From the document of a picture, clear introduction of the cube firmware level, I think for our efficient and rapid development, the temptation is quite big, but the introduct