The method of adding Macro definition to Samsung 6818 True eight Core embedded Development Board
S5P6818 development board is an eight-core processor launched by Samsung in 2015, which integrates a high-performance eight-core ARMcortex-A53 processor. It not only has super performance, but also takes into account the design of low power consumption, as well as strong 3D performance and video processing capabilities, so it will become the main processor in Samsung's high-end market. Samsung S5P6818 development board is an eight-core 64-bit ARM development board developed by Youjian Technology, the hardware is perfectly compatible with S5P4418.6818 development board, build the latest android5.1 system, 2G memory, 8GEMMC storage, configuration 7-inch HD IPS screen.
The size of the S5P6818 development board is 193mm * 150mm, and the design has very rich interfaces, including 4 TTLUART,1 RS485,1 RS232 serial ports, 2 USBHOST interfaces, one OTG interface and one CVBSOUT. The expandable module includes 3G/4G module, GPS module, 500W camera module, WIFI/BT two-in-one module and other application function modules.
S5P6818 core board size is 62mm*42mm, standard 2GB DDR3 memory, 8GB EMMC storage and equipped with power management chip-AXP228;PCB adopts 8-layer through-hole plate technology, layout and wiring fully takes into account electrical requirements, has excellent performance and anti-interference characteristics, so that the system works stably in a variety of environments. Powerful functions and rich peripheral interfaces are the best choice for users to be familiar with the software and hardware environment of S5P6818 development board.
. Add your own macro definition
Path: two .h in u-boot/include/configs add their own # define CONFIG_CMD_XIERONGCMD (according to pattern)
two。 Add your own .c file format to the u-boot/common directory fixed to cmd_ xxxx.c. Mine is cmd_xierongcmd.c.
It also imitates other command formats.
# include
# include
# include
# ifdef CONFIG_CMD_XIERONGCMD
Int do_xierongcmd (cmd_tbl_t * cmdtp, int flag, int argc, char * argv [])
{
Printf ("This is xierong test command...\ n")
}
U_BOOT_CMD
(
Xierongcmd, 1, 1, do_xierongcmd
"mybmp command usage"
"mybmp help..."
);
# endif
Samsung 6818 true eight-core embedded development board adds macro definition method, Youjian Technology focuses on the research and development of Samsung platform products, and is Samsung's most powerful solution company in China. The sales volume of the company's main Samsung tablet program has ranked first for many years in a row. Based on Samsung A15-Exynos5260/5410/5250, A53_S5P6818, A9-S5P4418, A9-Exynos 4412, A8-S5PV210, ARM11-S3C6410, ARM9-S3C2416 and other processors, the company has developed a series of products to provide customers with a comprehensive product selection and professional tailored MID solutions. Youjian Hengtian Technology serves domestic and foreign tablet computer brands, and provides one-stop solutions for industry customers; while creating the most competitive products for customers, it also realizes its own value.
