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retrospect, perhaps I did not notice that 51 single-chip serial port baud rate generator can only use T1, and I have been using T0 as a baud rate generator.Recently began to contact the STM32 series chip, because there is a firmware library for the operation of the underlying register is encapsulated, very close to advanced programming, learning and easy to use, and now many mobile chips are based on the A
For the MCU to arm of the students, the RTC may be less contact. Referring to the real-time clock, more often think of is DS1302. Of course, in the STM32, a CPU is enough, do not need to DS1302.In fact, RTC is just a timer, all the information is lost after power-down, so we need to find a place to store this information, so we find the backup register. Because it can still be powered by a button battery after power-down, this data can be saved at all
(Spi_nss_soft), the SPI chip selection signal in hardware mode is automatically generated by the hardware, while the software mode requires us to personally put the corresponding GPIO The port is pulled high or low to produce non-chip and chip selection signals. The hardware mode also automatically sets the SPI of the STM32 to the host if external conditions permit. We use software mode to assign a value of Spi_nss_soft to this member.(5) Spi_baudrat
, where we focus on its application. The implementation of a TFTP server in lwIP is very simple, according to the raw API programming method, at the time of initialization to create a UDP PCB (TFTP using UDP protocol communication), and bound 69 port (TFTP default communication port), and finally specify the UDP The data receive callback function of the PCB.The above method of creating a TFTP server needs to be performed after lwIP is initialized and
the timer resolution, which is exactly the original intention of designing this frequency divider. Ii. Universal timer programming for stm32 Timer programming is interrupt programming. Because the timer MUST be interrupted. Step 1: rcc_configuration (); // set the system clock, including the RCC clock configuration,
ability to use a higher clock frequency has undoubtedly increased the resolution of the timer, which is why the multiplier was designed. Second, STM32 General timer programming Timer programming is the interrupt programming. Because the use of timers must be used to interrupt. Step one: Rcc_configuration ();//Set th
/*Name: STM32 Read and write EEPROM using the I²C protocolDescription1. Using STM32 to read and write EEPROM and C51 The biggest difference is that the former is directly using the I²C controller (Hardware mode) to generate the required i²c timing, and the latter is the software to generate the i²c timing. In contrast, the former uses hardware circuitry to simplify prog
is only considered the purest hardware i²c code, for some use the software to compensate for the method, such as in the frequently stuck part of the setting timeout exit, is not within the scope of this article, because this has broken the normal i²c protocol.(2) because the higher realm of using STM32 is to use interrupt scheduling task instead of death loop, and hardware i²c is very taboo for interrupt interruption, so as your
the STM32 series is based on arm designed specifically for embedded applications that require high performance, low cost, and low power cortex-m3 kernel. Divided into two different series by performance: stm32f103 "enhanced" series and stm32f101 "Basic type" series. Enhanced series clock frequency reaches 72MHz, is the highest performance product in its class, the basic clock frequency is 36MHz, the price of 16-bit products to achieve a significantly
The stm32 microprocessor is based on the ARM core, so many ARM-based embedded development environments can be used on the stm32 development platform. Development tools can be used for stm32 development. Selecting an appropriate development environment can speed up development and reduce development costs. This chapter briefly introduces the commonly used developm
One of the powerful functions of STM32 is to support online IAP upgrades, IAP (In-Application Programming), that is, Programming In Applications ", generally, the program itself can write data or modify the program into the program memory. With the IAP function, you can easily update and upgrade the program firmware of the product through the reserved Communicati
the corresponding emulator model. Our routines are configured by default to J-linkSimulator. Click the "Add" button to add the Flash programming algorithm. Select stm32f10x high-density Flash./***** above the setting is the premise of programming, must pay attention to, otherwise when the unknown error will not touch the mind. *****/Some viewpoints on STM32 lear
power is turned off and the power is switched on, the LED stops blinking. And then I thought about how I could get the stm32 to blink when it's plugged in (that is, like ordinary Single-chip microcomputer). Then I click Start/stop Debug Session (or CRTL+F5) to end the debugging. I see a button next to the options Download to Flash Memory click below The output bar displays Programming done Verify OK I th
The article includes the introduction of the STM32 Firmware Library and the construction of engineering templates. I. Introduction to STM32 Firmware Library To create a project template, you must first understand the STM32 Firmware Library. You can download the STM32 firmware from the official ST website. To better
one. Stm32 Flash is divided into1. Primary storage block: Used to save the specific program code and user data, the primary storage block is divided into pages,a page size of 1KB. The range is within 128KB beginning with address 0x08000000. 2. Information BLOCK: For the User configuration information area that is responsible for the 2KB Boot program (Bootloader) and 512B that is shipped by Stm32 factorytwo.
one. Stm32 Flash is divided into1. Primary storage block: Used to save the specific program code and user Data , the primary storage block is divided into pages,a page size of 1KB. The range is within 128KB beginning with address 0x08000000. 2. Information BLOCK: For the User configuration information area that is responsible for the 2KB Boot program (Bootloader) and 512B that is shipped by Stm32 factorytwo
your needs. However, I think txe allows the program to have more time to fill in the TDR register to ensure that the sent data streams are uninterrupted. TC allows the program to know the exact sending end time, which facilitates the program to control the timing of external data streams. Section 4 In general, the serial port of the stm32 microcontroller is still well understood, and programming is not co
Recently in the use of STM32 USB module to develop a project, it is very simple, the result of a fast two days to the USB packet buffer access to do a little summary here. The STM32 USB module packet buffer has 512B, but in the STM32 reference manual memory image shows that 0x40006000-0x400063ff, a whole lot of 512B, how can this, but also in the attempt to
configure Channel 4 for input capture mode Set the TI4_RMP bit of the Tim5_or register to 0x01 to connect the LSI clock Capture/Compare measurement of internal clocks with TIM5 4 events or interrupts4. Programming the watchdog clock output with the measured LSI frequency to update the RTC Prescaler TIM11 Channel 1 The TIM11 has a multiplexed controller that can be used to select whether the input capture is
to you. Because the official website download needs to register the user, also may go to my 360 network disk to download.1.ST websiteStandard peripheral libraries, routines, STM32CUBEMX, etc.:Http://www.st.com/content/st_com/en/products/embedded-software/mcus-embedded-software/ stm32-embedded-software.html?querycriteria=productid=sc9612.360 Cloud DiskSTM32F0 Common information:https://yunpan.cn/cS2PVuHn6X2Bj access password 8c37STM32F1 Common informa
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