stm32 programming

Keil STM32 C + + mixed programming Essentials 1. The filename must be. CPP and. h2. In the. h file, add the following code: #ifndef __ledtask_h #define __LEDTASK_H #ifdef __cplusplus extern "C" { #endif #include " Stm32_led.h " void Led1_task (void *pdata); #ifdef __cplusplus } #endif #endif 3. When calling resources in a. cpp file (such as classes, functions, etc.), that file must also be a. cp

Why I use P1out ^= 0x01; and p1out = 0x01^ is a different or calculated symbol so each operation is reversed. This operator, however, is maintained at a state of 1.P1out|=bit6 the value of P1out if it is 1, if it is 0, take the value of BIT6What do you mean, p1out |= BIT7?Define the P1.7, which is different from the definition of 51, 51 needs sbit, if you need to define p1.2,p1.3, you can write: P1out |=bit2 + BIT3, and then you can operate on it, such as P1out ^= BIT0, so P1.0 output high level

(extistruct); Exti_clearitpendingbit (EXTI_LINE3); Exti_clearitpendingbit (EXTI_LINE13); External interrupt line 0, interrupt multiplexing pa0nvicstruct.nvic_irqchannel = exti3_irqn;nvicstruct.nvic_irqchannelpreemptionpriority = 1; nvicstruct.nvic_irqchannelsubpriority = 1;nvicstruct.nvic_irqchannelcmd = ENABLE; Nvic_init (nvicstruct); Nvicstruct.nvic_irqchannel = Exti15_10_irqn;nvicstruct.nvic_irqchannelpreemptionpriority = 1;nvicStruct.NVIC_ irqchannelsubpriority = 0;nvicstruct.nvic_ir

following: (1) The above only takes into account the purest hardware I2C Code. For some methods that use software to make up for, for example, setting timed-out exit in a frequently stuck part is not covered in this article, this has damaged the normal I2C protocol. (2) because the high-level realm of using STM32 is the use of interrupted scheduling tasks rather than endless loops, and hardware I2C is very taboo for interrupt interruption, as your

[Free resources] The latest stm32 series video tutorials and stm32 video tutorials MCU basics GPIO The STM32 series of tutorials were officially launched. We will be able to explain the series by David, the gold medal lecturer of the far-sighted startron. Through this series of tutorials, we can better understand embedded systems and lay a good foundation. In th

I2C bus is widely used in all embedded systems and is an industrial-level bus. However, because stm32 is a 32-bit MCU, it is doomed that its I2C hardware interface will be powerful, but it will also be difficult to control, unlike 8-bit machines, such as avr8-bit Twi (actually fully compliant with I2C standards) so easy to use. the following are some of my experiences in programming

hand and are not retained ). Stm32 port ECOs #14, serial port driver and Serial Port Programming Port the stm32 ECOs #15, and configure the FSMC sequence of the SRAM-to solve the problem that the program runs or dies from time to time. Stm32 port ECOs #16, gpio application-control LED lights and scan buttons

Duanxx STM32 learning: stm32 bus AMBA, AHB, APB A few days ago I looked at the main peripherals and circuit design of STM32. Today I began to look at the program design of STM32. Here I am using the STM32 library V3.5, so I am too lazy to see what registers The first problem

STM32 rookie diary 5---AD conversion, stm32 dish diary 5 --- ad First, click the link below to download the code we need. Link1. Add necessary files: As we have said before, three files must be added: startup_stm32f10x_xd.s, stm32f10x_rcc.c, and system_stm32f10x.c. Among them, the xd is selected based on the capacity of your chip. These three files can be found in the Code provided by qianfan. File Path: C

STM32 power management, stm32 Inverter Power Supply (1) 3-minute Model ① Sleep mode ② stop mode ③ standby mode 1. Sleep mode: Cortex-M3 kernel (can be understood as the CPU) stop working, CPU power 1.8V, peripherals in the operation, wake up from the original position after execution 2. Shutdown mode: all clocks are stopped, and the CPU power is 1.8V disconnected. After waking up, the system runs from the o

From the STM32 Firmware Library, the STM32 Firmware Library The biggest difference between STM32 and general single-chip microcomputer/ARM7 is that it has many registers, and it is difficult for users to write down all of them. Therefore, ST officially provides a set of library function source code according to the specifications, you can directly operate th

two parts: the boot program, the user program. The boot program is always the same. IAP is also called programming in the program. The difference between an ISP and an IAP is that the ISP is generally reprogramming the chip, using the bootstrap procedure of the Chip factory. IAP is only part of the update process, using an IAP boot program developed by the appliance factory. In general, ISPs are subject to more restrictions, and IAP is more easily ma

Analysis on cmsis of stm32 Firmware Library 0 [11:26:00 | by: banyai 2011-8-19 edit by: Tony The v3.3.0 library of stm32 contains the cmsis folder as the software interface standard of arm cortex microcontroller. Now I will make a brief analysis in my actual work: 1. select the boot file: select the correct boot file based on the chip model. This is based on the data manual. For example, choose startup_stm3

This paper mainly discusses the STM32 of conventional chip capacity and the difference between large and small capacity of STM32 chip. The STM32 large capacity chip is a chip that includes up to 512K bytes of flash memory and 64K bytes of SRAM for large capacity. STM32 small capacity chip specific capacity see the tabl

Stm32--flash Reading and writingFirst, Flash Introduction　　The programming operation of Stm32 can be realized by reading and writing the Flash inside the stm32.Stm32 's built-in programmable flash is of great importance in many situations. such as its support for ICP (in cir

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Introduction to DMA and Direct Memory Access for STM32, dmastm32 The first time I came into contact with DMA, I learned the arm9-bare-board program at school. I thought it was almost two years later. Now let's take a look at the dma of the STM32 platform. With the support of the standard peripheral library, the DMA programming of the

normal, and the next step is to increase the timer to display the clock. When setting the I/O port mode, you can set the mode to the open/Miss mode to achieve bidirectional IO, and output and read external input. With bitband operation and macro definition, you can directly operate the IO port output level like 51. Reference: 1602 characters LCD _ Baidu encyclopedia HD44780 device manual program source code download link: https://pan.baidu.com/s/1hsvEBcg password: fk3b welcome to view my previo

. Where the STM32 kernel belongs to the CORTEX-M series, the embedded Linux kernel may be the CORTEX-A series. Some cortex-m do not support the MMU Memory management unit, as far as I know can only up to Μc/os series of embedded systems, and CORTEX-A support MMU, can be on Unix-like systems. Once on Unix-like systems, the underlying stuff can be encapsulated, providing only interfaces to the upper-level developers.Here to popular science. If you learn

Flash to "erase first write" principle;Stm32 's built-in flash programming operations are written in pages, and the operation must be written in 16-bit half-width data bit units, allowing cross-page writes, and writing non-16-bit data will cause stm32 internal bus errors. the internal RC oscillator must be turned on when the built-in flash reads and writes. #inc