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The RTC of F4. The RTC of the F1 series is a simple counter. To obtain the time, you have to calculate it by yourself. F4. [Main features] The RTC of ipvf4 is an independent BCD/clock Counter. RTC provides a time calendar and two-way alarm clock interrupt, a periodic programmable ring sign with Interrupt Capability. He is also a wake-up unit that manages low-power consumption mode in RTC. The seconds,

STM32 F4 Clock SourcesGoal:Routing clock sources to the microcontroller output pin (MCO1) high-speed internal (HSI) clock is 16mhzhigh-speed Externa L (HSE) clock is 8MHz (very precise) PLL CLK are configured to being 84MHz because I have a 100MHz oscilloscope (unfortunately Can ' t visualize the Max 168MHz)#include "mcu_config.h"int main (void ) { // Initializing and clocking pa.8 rcc_mco1config (RCC_MCO1SOURCE_HSI, rcc_mc

STM32 F4 Gpio Modes goal:creating A visual summary of GPIO configuration Modes. The summary at the bottom shows the major configuration choices.Basic electrical Info:gpios can sink or source up to±8 Ma, and sink or source up to±20 Ma (with a relaxed vol/voh)Except PC13, PC14 and PC15 which can sink or source up to±3ma.When using the PC13 to PC15 GPIOs in output mode, the speed should not exceed 2 MHz with a maximum load of pF.For more I/O static and A

Recently writeProgramThe background thread needs to display a progress window for execution, and this window does not need to be closed by the user, so I want to block the Alt + F4 and escape messages. In general, you can think of processing wm_keydown and wm_syskeydown messages immediately: Afx_msg void onkeydown (uint nchar, uint nrepcnt, uint nflags); afx_msg void onsyskeydown (uint nchar, uint nrepcnt, uint nflags ); This is correct, but

How can I configure vim to automatically add the script running environment, author, email, script description, and other information during shell script development using vim? I found some information online, and finally found some information. paste the vimrc configuration file. Cat ~ /. Vimrc "Set the copyright statement"Add or update Headers"Map the F4 function key on the keyboard to the shortcut key for adding the author informationMap Function A

Half-life: data is sentNot familiar: It is not understandable. I just used a few simple things.Configuration DMA The procedure is as follows:1. Turn on the clock.Rcc_ahb1periphclockcmd (rcc_ahb1periph_dma2, enable );2. Configure the DMA data structureThere are several clear points: Pass Usart 1 to send data, St F4 reference manual can be found in the usart1 said the corresponding channel: DMA2-Channel4-Stream7.The data transmission direction is memory

public int ctype = 0;Private Const INT Gwl_style =-16;Private Const int ws_sysmenu = 0x80000;[System.Runtime.InteropServices.DllImport ("user32.dll", SetLastError = True)]private static extern int GetWindowLong (IntPtr hWnd, int nIndex);[System.Runtime.InteropServices.DllImport ("User32.dll")]private static extern int SetWindowLong (IntPtr hWnd, int nIndex, int dwnewlong);private void Window_Loaded (object sender, RoutedEventArgs e){var hwnd = new System.Windows.Interop.WindowInteropHelper (this

button | Browser screen alt+f4 shortcut keys:

All things recovered in March, 360 with 360 mobile phone F4 back to the industry front.The main quality price ratio of new products not only the price of pro-people, the function is also a bright spot-in its minimum price of only 599 yuan on the basis of the 360 still for this mobile phone equipped with dual, fun photography, application cold room, location through, a number of "black technology" and other functions, and hardware with metal box, 0.4s

Recently in a spoof program, is opened, the program gets the desktop then, and then full screen display on the screen, the user can not do anything at this time.At this time, I hope that the user can not use the keyboard alt+f4 to end the program and through the win key to the window operation. I searched the Internet, using the global keyboard hook method can be done to block the user's keyboard operation. The following is the related code, which use

Recently, due to the upgrade, the SAP F4 help dialog box is changed to the modal dialog box. Some problems have occurred in the previously written programs (dynp_values_update and f4if_int_table_value_request ). The solution is as follows: 1. log on to the system with the sap * user, and choose "control" from the menu "help"> "Settings..."> "display" of "F4 help. This parameter will exist in the usr05 table

STM32 F4 DAC DMA waveform GeneratorGoal: generating an arbitrary periodic waveform using a DACS with DMA and TIM6 as a trigger.Agenda: Modeling a waveform in MATLAB and getting the waveform data Studying the DAC, DMA, and TIM6 to see how it can is used to generate a waveform Coding and testing a couple of functions Percent generating an Nbit sine wave%modifiable Parameters:step, bits, offsetclose; clear; Clc;points=