{"id":695,"date":"2019-12-24T14:45:55","date_gmt":"2019-12-24T14:45:55","guid":{"rendered":"http:\/\/www.recologypower.com:9080\/?p=695"},"modified":"2019-12-24T14:45:56","modified_gmt":"2019-12-24T14:45:56","slug":"f1c100s-f1c200su-boot-%e6%b7%bb%e5%8a%a0led%e9%a9%b1%e5%8a%a8","status":"publish","type":"post","link":"http:\/\/www.recologypower.com:9080\/?p=695","title":{"rendered":"[f1c100s\/f1c200s]u-boot \u6dfb\u52a0LED\u9a71\u52a8"},"content":{"rendered":"\n

UBOOT\u7248\u672c\uff1a2018.01<\/p>\n\n\n\n

\u5b9e\u9a8c\u76ee\u6807\uff1au-boot\u542f\u52a8\u540e\u70b9\u4eae3\u4e2aled\u706f
\nu-boot\u542f\u52a8\u8fc7\u7a0b\u4e2d\u4f1a\u8c03\u7528crt0.S\u6c47\u7f16\u4ee3\u7801\uff0c\u5728\u8be5\u6c47\u7f16\u4ee3\u7801\u4e2d\u70b9\u4eaeLED.<\/p>\n\n\n\n

LED\u5bf9\u4e8e\u5f15\u811a\u5982\u4e0b\uff1a
\nREG –GPE4
\nGREEN \u2013 GPE5
\nYELLOW \u2013 GPE6<\/p>\n\n\n\n

1\u3001GPIO\u9a71\u52a8\u5b9e\u73b0
\nu-boot\u7684\u9a71\u52a8\u7a0b\u5e8f\u90fd\u653e\u5728drivers\u76ee\u5f55\u4e0b\u3002
\nLED\u9a71\u52a8\u5c5e\u4e8eGPIO\u9a71\u52a8\u3002
\n\u6240\u4ee5led\u9a71\u52a8\u5e94\u8be5\u5199\u5728drivers\\gpio\u76ee\u5f55\u4e0b\uff0c\u4e0b\u9762\u662f\u5df2\u7ecf\u5b9e\u73b0\u7684sunxi_gpio.c\u9a71\u52a8\u3002<\/p>\n\n\n\n

\u8be6\u7ec6\u4ee3\u7801\u53ef\u67e5\u9605\uff1au-boot-nano-v2018.01\\drivers\\gpio\\sunxi_gpio.c<\/p>\n\n\n\n

sunxi_gpio.c\u91cc\u7684\u51fd\u6570\u5728u-boot-nano-v2018.01\/include\/asm-generic\/gpio.h\u5934\u6587\u4ef6\u4e2d\u88ab\u58f0\u660e\u3002<\/p>\n\n\n\n

2\u3001LED\u9a71\u52a8\u5b9e\u73b0\uff0c\u8fd9\u90e8\u524d\u9700\u8981\u5148\u5b9e\u73b0\u4e0a\u9762\u7684GPIO\u9a71\u52a8<\/p>\n\n\n\n

\u5728board\u76ee\u5f55\u4e0b\u6dfb\u52a0led.c\uff0c\u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n\n

#include <common.h>\n#include <asm\/io.h>\n#include <asm\/arch\/gpio.h>\n#include <status_led.h>\n#include <asm-generic\/gpio.h>  \/*\u4e0b\u9762\u51fd\u6570\u5728\u8fd9\u4e2a\u5934\u6587\u4ef6\u4e2d\u58f0\u660e*\/\n\/\/int gpio_direction_output(unsigned gpio, int value);\n\/\/\u521d\u59cb\u5316 LED(PE4\u3001PE5\u3001PE6)\nvoid coloured_LED_init(void)\n{\n\t\/* Clock is enabled in board_early_init_f() *\/\n\t\/\/gpio_direction_output\u51fd\u6570\u5728u-boot-nano-v2018.01\\drivers\\gpio\\sunxi_gpio.c\u4e2d\u5b9e\u73b0\uff0c\u8fd9\u91cc\u76f4\u63a5\u8c03\u7528\u5c31\u53ef\u4ee5\u4e86\n\tgpio_direction_output(CONFIG_RED_LED, 0);\n\tgpio_direction_output(CONFIG_GREEN_LED, 0);\n\tgpio_direction_output(CONFIG_YELLOW_LED, 0);\n\n\n}\n\n\n#ifdef CONFIG_RED_LED\nvoid red_led_on(void)\n{\n\tgpio_set_value(CONFIG_RED_LED, 1);\n}\n\nvoid red_led_off(void)\n{\n\tgpio_set_value(CONFIG_RED_LED, 0);\n}\n#endif\n\n#ifdef CONFIG_GREEN_LED\nvoid green_led_on(void)\n{\n\tgpio_set_value(CONFIG_GREEN_LED, 1);\n}\n\nvoid green_led_off(void)\n{\n\tgpio_set_value(CONFIG_GREEN_LED, 0);\n}\n#endif\n\n#ifdef CONFIG_YELLOW_LED\nvoid yellow_led_on(void)\n{\n\tgpio_set_value(CONFIG_YELLOW_LED,1);\n}\n\nvoid yellow_led_off(void)\n{\n\tgpio_set_value(CONFIG_YELLOW_LED, 0);\n}\n#endif<\/code><\/pre>\n\n\n\n
\u6ce8\u610f\uff1a#include <asm-generic\/gpio.h> \u5934\u6587\u4ef6\u4e0d\u80fd\u5c11\u3002<\/p>\n\n\n\n
\u7136\u540e\u7f16\u8f91led.c\u540c\u76ee\u5f55\u4e0b\u7684Makefile\u6587\u4ef6\uff0c\u628aled.o\u7f16\u8bd1\u8fdb\u53bb\u3002
\nMakefile\u4e2d\u6dfb\u52a0\u5982\u4e0b\u4e00\u884c\uff1a<\/p>\n\n\n\n
obj-$(CONFIG_SUNXI_LED )  += led.o<\/code><\/pre>\n\n\n\n
3\u3001\u914d\u7f6e\u58f0\u660e<\/strong>
 \u5728include\/configs\/suniv.h\u4e2d\u6dfb\u52a0\u5982\u4e0b\u58f0\u660e\u3002 <\/p>\n\n\n\n
#define CONFIG_SUNXI_LED 1\t\t\/*\u5f00\u542fLED\u652f\u6301*\/\n#define CONFIG_RED_LED  132\t    \/*PGE4*\/\n#define CONFIG_GREEN_LED  133\t\/*PGE5*\/\n#define CONFIG_YELLOW_LED  134\t\/*PGE6*\/<\/code><\/pre>\n\n\n\n
4\u3001\u5728crt0.S\u6c47\u7f16\u4ee3\u7801\u4e2d\u70b9\u4eaeLED<\/strong>
 \u5728crt0.S\u4e2d\u8c03\u7528\u4ee5\u4e0b\u51fd\u6570\u70b9\u4eae3\u4e2aled\u706f\uff1a <\/p>\n\n\n\n
bl coloured_LED_init\nbl red_led_on\nbl green_led_on\nbl yellow_led_on<\/code><\/pre>\n\n\n\n
5\u3001\u7f16\u8bd1\u4e0b\u8f7d\uff1a<\/strong><\/p>\n\n\n\n
cd \u201c\u4f60\u7684uboot\u76ee\u5f55\u201d\n# \u7f16\u8bd1\nmake ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- -j8\n# usb\u4e0b\u8f7du-boot\u76ee\u6807\u677f\nsunxi-fel uboot .\/u-boot-sunxi-with-spl.bin  <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\n
UBOOT\u7248\u672c\uff1a2018.01 \u5b9e\u9a8c\u76ee\u6807<\/h3>\n<\/div>\n
\u9605\u8bfb\u66f4\u591a<\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85],"tags":[90,88,89,45,91,87],"_links":{"self":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/695"}],"collection":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=695"}],"version-history":[{"count":1,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/695\/revisions"}],"predecessor-version":[{"id":696,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=\/wp\/v2\/posts\/695\/revisions\/696"}],"wp:attachment":[{"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=695"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.recologypower.com:9080\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}