Programmer Group

1.FRESULT f_opendir(DIR *dp,const TCHAR *path); Function: Open a directory parameterfunctiondpA pointer to an empty directory object structure that stores directory information about to be openedpathRoute The return value FR_OK(0) indicates that the function was executed successfully and the directory object structure was created for subsequen ...

1. Management of interruptions Freertos manages system interrupts by manipulating BASEPRI registers, and the management priority is defined in the header file FreeRTOSConfig.h #define configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY    5 Setting the maximum priority that FreeRTOS can manage does not belong to the FreeRTOS pipeline, and interrupt ...

We usually use various types of chips to do some projects. At this time, among different chips (due to different flash and io ports), it is the most troublesome process to transplant some of our original API s. The following are some of my experiences in porting OLED s to STM32F103C6T6 (the question is that C6T6 is cheap). 0.96-inch oled has m ...

The debugging wm8960 audio driver encountered a lot of pits. After several days of research, it was finally debugged. Drive commissioning steps Whether the driver can be loaded successfully is not only the first step of debugging, but also one of the most critical steps. 1. View the hardware schematic diagram: 2. Open the corresponding devi ...

DCB structure must be used when programming serial port with WIN32 API. First, first, the DCB structure typedef struct _DCB { DWORD DCBlength; DWORD BaudRate; DWORD fBinary: 1; DWORD fParity: 1; DWORD fOutxCtsFlow:1; DWORD fOutxDsrFlow:1; ...

iic protocol characteristic: With few pins, simple hardware implementation and strong scalability, it does not need external transceiver equipment. It is widely used in the communication between multiple integrated circuits (IC S) in the system.Two bus lines, one bidirectional serial data line (SDA) and one serial clock lineEach device connec ...

Portal: Blog summary post Note content reference (FreeRTOS Development Manual of punctual atom, authoritative guide of Cortex-M3, authoritative guide of Cortex-M3 and Cortex-M4, etc.) and network notes Code environment: FreeRTOS generated by CubeMX (STM32F407) outline FreeRTOS time management part mainly involves system b ...

Portal: Blog summary post Portal: Cortex-M3_ Interrupt, exception Portal: Cortex-M3 notes_ Basics Note content reference (FreeRTOS Development Manual of punctual atom, authoritative guide of Cortex-M3, authoritative guide of Cortex-M3 and Cortex-M4, etc.) 1. Interrupt configuration macro When STM32 uses FreeRTOS, the priority g ...

cubemx configuration STM32 (III)__ Input and output of GPIO 1. Establish the project and carry out core configuration According to the article 2. Use cubemx to configure STM32 (II)__ Core configuration Configure as follows: CubeMX new project CubeMX graphic configuration debug clock signal CubeMX graphic configuration clock tree CubeMX graphi ...