The system tick timer is a peripheral that exists in all m3 cores, but the number of other timers in m3 cores is different. Therefore, the system tick timer is generally used as the system time base, which is also convenient for the transplantation of RTOS in different chips.
1. Configure tick timer
On the graphic page of cubemx, you ...
Added by swampone on Tue, 08 Mar 2022 17:37:48 +0200
A walker asked the old Taoist priest, "what did you do before you got the Tao?" Old Taoist priest: "chop firewood, carry water and cook." The walker asked, "what about after gaining the Tao?" Old Taoist priest: "chop firewood, carry water and cook." The walker asked again, "what is T ...
Liquid crystal display
Basic parameters of display
Liquid crystal control principle
Introduction to ILI9341 LCD controller
Signal line and 8080 timing of LCD
FSMC of STM32 is used to simulate 8080 interface timing
Introduction to FSMC
Clock control logic
FSMC analog 8080 timing
Added by MCrosbie on Fri, 04 Mar 2022 05:49:17 +0200
STM32 learning from scratch @EnzoReventon
SPI read / write FLASH
Related links: Introduction to SPI physical layer and FLASH chip SPI protocol layer SPI features and architecture
reference material: [wildfire EmbedFire] practical guide for STM32 Library Development -- Based on wildfire Decepticon development board [punctual atom] STM32F4 Dev ...
1, Mapping from linux physical address to virtual address
linux cannot directly operate the physical address. If you need to operate the hardware, you need to convert the physical address into a virtual address first. Because linux enables MMU, you cannot directly operate the physical address. 1. What are the benefits of enabling MMU? (1) Make ...
Added by CashBuggers on Thu, 03 Mar 2022 05:28:51 +0200
The previous learning is divided into several modular knowledge points. The learned knowledge needs to be combined for practice, and the comprehensive and flexible application ability of the learned MCU knowledge is more investigated. (the writing is relatively basic. If there is any error, please correct it)
Added by amreiff on Wed, 02 Mar 2022 14:13:12 +0200
Control LED light equipment
Essence: create corresponding device node files for hardware devices
When creating equipment files, specify the use of equipment files.
Control the hardware according to the device file usage specified by the driver
Control hardware equipment steps
1. Find the device node file corres ...
Added by Grimloch on Sat, 26 Feb 2022 13:11:19 +0200
LCD with 8080 timing
There are four control lines of 8080: RD write enable, WR read enable, DC data / command and CS chip selection
8080 bus has many interfaces: 8 / 9 / 16 / 18 bit interface
8080 general timing
LCD_CS = 0; //Film selection
LCD_DC = 1; //Read data
LCD_WR = 1; //No writing
LCD_RD = 0; //Start readin ...
Added by Kazlaaz on Sat, 26 Feb 2022 12:59:07 +0200
1. Introduction to G4 series DMA
First, introduce the DMA of G4 series. Although the G4 series of 32 is based on the M4 kernel, its DMA channel mapping is quite different from the common F407. First, paste some pictures in the reference manual: I don't know what you can think of after seeing these two pictures. I believe friends who have see ...
Added by MinDFreeZ on Thu, 24 Feb 2022 04:38:19 +0200
Record the process of gt1151 touch drive adapter, which is controlled by the full log D1s dot screen strong core.
First, to find the touch driver source, you can go to the github repository of goodix and find a generic driver code with the following links: https://github.com/goodix/gt1x_driver_generic.git
Drivers/input/touchscreen/gt1x_in Tin ...
Added by yuraupt on Fri, 18 Feb 2022 12:44:24 +0200