Cross-compilation of Freon Embedded Full Revision A40i

Environment: UNBUNTU20.4LTS Cross Compilation Toolchain: ARM-Linux-GNueabiHF-GCC Software: VSCode Select Download Cross Compilation Toolchain (I follow other tutorial downloads) Configure SFTP on the development board for file transfer, and complete compilation The executable is transmitted to the development board to run through other tutorials. The makeup files are studied and simple implementation. Make compiles to get the executable Main to write GPIO_TEST.C files, here reference articles https://www.jianshu.com /P/E5ECD92C0787#INCLUDE "stdio.h"#include"stdlib.h"#include"unistd.h"#includ"sys/stat.h"#includ "/types.h"#includ"fcntl.h " Char * gpio_path = "/ sys / class / gpio / gpio43 / value"; INTMAIN (INTRGC, Char * Argv []) {intres = 0; intfd; char * path; printf ("gpiotestdeMo \ n"); if (argc "= 2) {path = argv [1];} else {path = gpio_path;} fd = open (path, o_wronly); if (fd" 0) {Printf ("FailedToopengPiO% S / N", PATH); EXIT (1);} while (1) {Write (FD, "1); SLEEP (1); Write (FD," 0 ", 1); SLEEP (1);} close (fd);} Makefile files Create the generated executable GPIO_FLASH to the development board directory, do not add any parameters to run the LED flashing belt parameters on the core board can change a GPIO to control FQJ, read the full text

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