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Read time: 3 minute(s)
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< p class = "- topic/p p" data-ofbid = "d165078e36__20250519091523" > 本节以添加 GT911 电容屏驱动为例，介绍外设驱动的添加方法。< / p >
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< section class = "- topic/section section" id = "id__id2" data-ofbid = "id__id2" > < h2 class = "- topic/title title sectiontitle" > 添加外设< / h2 >
< ol class = "- topic/ol ol" id = "id__ol_j1n_yjq_gdc" data-ofbid = "id__ol_j1n_yjq_gdc" >
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< li class = "- topic/li li" data-ofbid = "d165078e45__20250519091523" >
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< div class = "- topic/div div section" id = "id__id3" > < strong class = "+ topic/ph hi-d/b ph b" > 获取源码< / strong >
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< p class = "- topic/p p" data-ofbid = "d165078e51__20250519091523" > 从 < a class = "- topic/xref xref reference external" href = "https://github.com/RiceChen/gt911" target = "_blank" rel = "external noopener" > https://github.com/RiceChen/gt911< / a > 下载 GT911 的 RT-Thread
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驱动源码位，并将其解压至 < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch< / span >
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目录下。< / p > < div class = "- topic/p p" data-ofbid = "d165078e60__20250519091523" > 源码结构如下：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_axx_xjq_gdc" data-ofbid = "id__codeblock_axx_xjq_gdc" > touch$ tree
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.
├── gt911
│ ├── inc
│ │ └── gt911.h
│ ├── Kconfig
│ └── src
│ └── gt911.c
└── SConscript< / pre > < / div > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e66__20250519091523" >
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< div class = "- topic/div div section" id = "id__sconscript" > < strong class = "+ topic/ph hi-d/b ph b" > 修改< / strong >
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< strong class = "+ topic/ph hi-d/b ph b" > SConscript 文件< / strong > < div class = "- topic/p p" data-ofbid = "d165078e74__20250519091523" > 在< span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch/SConscript< / span >
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文件中，添加对 GT911
驱动源码的引用，具体操作内容如下：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__pre_pwg_4vp_wcc" data-ofbid = "id__pre_pwg_4vp_wcc" > Import(< span class = "hl-string" > 'AIC_ROOT'< / span > )
Import(< span class = "hl-string" > 'PRJ_KERNEL'< / span > )
from building import *
cwd = GetCurrentDir()
src = Glob(< span class = "hl-string" > '*.c'< / span > )
CPPPATH = []
< strong class = "hl-keyword" > if< / strong > GetDepend(< span class = "hl-string" > 'AIC_TOUCH_PANEL_GT911'< / span > ):
CPPPATH.append(cwd + < span class = "hl-string" > '/gt911/inc'< / span > )
src += Glob(< span class = "hl-string" > 'gt911/src/*.c'< / span > )
group = DefineGroup(< span class = "hl-string" > 'touch'< / span > , src, depend = [< span class = "hl-string" > ''< / span > ], CPPPATH = CPPPATH)
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Return(< span class = "hl-string" > 'group'< / span > )< / pre > < / div > < p class = "- topic/p p" data-ofbid = "d165078e81__20250519091523" > 如果后续需要添加其它 touch 的驱动，可参考 GT911 模板将其添加到
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SConscript 文件中。< / p > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e85__20250519091523" >
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< div class = "- topic/div div section" id = "id__pinmux" > < strong class = "+ topic/ph hi-d/b ph b" > 修改 < span class = "+ topic/ph sw-d/filepath ph filepath" > pinmux.c< / span > 文件< / strong >
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< div class = "- topic/p p" data-ofbid = "d165078e94__20250519091523" > 根据原理图，在 < span class = "+ topic/ph sw-d/filepath ph filepath" > target/< cpu> /< board> /pinmux.c< / span > 中添加
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RST、INT、SCK 和 SDA
引脚的定义：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_wp1_bkq_gdc" data-ofbid = "id__codeblock_wp1_bkq_gdc" > < strong class = "hl-keyword" > struct< / strong > aic_pinmux aic_pinmux_config[] = {
...
#ifdef AIC_USING_I2C3
{< span class = "hl-number" > 1< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.8"< / span > }, < em class = "hl-comment" > // RST< / em >
{< span class = "hl-number" > 1< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.9"< / span > }, < em class = "hl-comment" > // INT< / em >
{< span class = "hl-number" > 4< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.10"< / span > }, < em class = "hl-comment" > // SCK< / em >
{< span class = "hl-number" > 4< / span > , PIN_PULL_DIS, < span class = "hl-number" > 3< / span > , < span class = "hl-string" > "PA.11"< / span > }, < em class = "hl-comment" > // SDA< / em >
#endif
...
};< / pre > < / div > < div class = "- topic/note note note note_note" id = "id__note_evg_rmc_5cc" data-ofbid = "id__note_evg_rmc_5cc" > < span class = "note__title" > 注：< / span >
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< p class = "- topic/p p" data-ofbid = "d165078e103__20250519091523" > 每个板卡的 < span class = "+ topic/ph sw-d/filepath ph filepath" > pinmux.c< / span > 都定义了各个端口的 GPIO 引脚及功能，新增接口前应检查。< / p >
< / div > < div class = "- topic/p p" data-ofbid = "d165078e109__20250519091523" > 根据原理图， ： < ul class = "- topic/ul ul simple" id = "id__ul_qwg_4vp_wcc" data-ofbid = "id__ul_qwg_4vp_wcc" >
< li class = "- topic/li li" data-ofbid = "d165078e113__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d165078e115__20250519091523" > 使用 I2C3 接口 作为驱动。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e119__20250519091523" >
< p class = "- topic/p p" data-ofbid = "d165078e121__20250519091523" > 除了 I2C 的 SCK 和 SDA 引脚 以外，还需要用到 RST 和 INT 引脚。< / p >
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< / li >
< / ul > < / div > < / div >
< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e127__20250519091523" >
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< div class = "- topic/div div section" id = "id__kconfig" > < strong class = "+ topic/ph hi-d/b ph b" > 配置源码 Kconfig < / strong >
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< div class = "- topic/p p" data-ofbid = "d165078e133__20250519091523" > 在驱动源码 Kconfig < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch/gt911/Kconfig< / span > 文件夹中，添加
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GT911
驱动的配置选项。内容如下：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_nhj_ckq_gdc" data-ofbid = "id__codeblock_nhj_ckq_gdc" > $ cat Kconfig
menu < span class = "hl-string" > "Gt911 touch panel options"< / span >
config AIC_TOUCH_PANEL_GT911
bool < span class = "hl-string" > "Using touch panel gt911"< / span >
< strong class = "hl-keyword" > default< / strong > n
select AIC_I2C_DRV
config AIC_TOUCH_PANEL_GT911_I2C_CHA
string < span class = "hl-string" > "gt911 using i2c channel index"< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "i2c3"< / span >
depends on AIC_TOUCH_PANEL_GT911
config AIC_TOUCH_PANEL_GT911_RST_PIN
string < span class = "hl-string" > "gt911 reset pin"< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "PA.8"< / span >
depends on AIC_TOUCH_PANEL_GT911
config AIC_TOUCH_PANEL_GT911_INT_PIN
string < span class = "hl-string" > "gt911 irq pin"< / span >
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "PA.9"< / span >
depends on AIC_TOUCH_PANEL_GT911
endmenu< / pre > < / div > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e142__20250519091523" >
< div class = "- topic/div div section" id = "id__id5" > 添加< strong class = "+ topic/ph hi-d/b ph b" > 外设驱动 Kconfig< / strong > 的引用。< div class = "- topic/p p" data-ofbid = "d165078e149__20250519091523" > 在
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< span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/Kconfig< / span > 文件中，添加对驱动源码 Kconfig
路径的引用：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_hyw_r25_hdc" data-ofbid = "id__codeblock_hyw_r25_hdc" > ...
#--------------------------------------------
# touch panel driver global option
#--------------------------------------------
menu < span class = "hl-string" > "Touch Panel Support"< / span >
source < span class = "hl-string" > "bsp/peripheral/touch/gt911/Kconfig"< / span >
endmenu
...< / pre > < / div >
< / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e160__20250519091523" >
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< div class = "- topic/div div section" id = "id__menuconfig" > < strong class = "+ topic/ph hi-d/b ph b" > 配置 menuconfig < / strong >
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< div class = "- topic/p p" data-ofbid = "d165078e166__20250519091523" > 运行 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > scons --menuconfig< / span > 或 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > me< / span > (OneStep
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命令)，打开 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > I2C3< / span > 并配置为 < span class = "+ topic/keyword pr-d/parmname keyword parmname" > Master< / span > ，使能 GT911
驱动。< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_ygm_2kq_gdc" data-ofbid = "id__codeblock_ygm_2kq_gdc" > Board options --->
[*] Using I2c3
I2c3 Parameter --->
I2c3 Master & & Slave (Master) --->
Drivers options --->
Peripheral --->
Touch Panel Support --->
Gt911 touch panel options --->
[*] Using touch panel gt911
(i2c0) gt911 using i2c channel index
(PA.< span class = "hl-number" > 10< / span > ) gt911 reset pin
(PA.< span class = "hl-number" > 11< / span > ) gt911 irq pin< / pre > < / div > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e184__20250519091523" >
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< div class = "- topic/div div section" id = "id__id6" > < strong class = "+ topic/ph hi-d/b ph b" > 编译< / strong >
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< p class = "- topic/p p" data-ofbid = "d165078e190__20250519091523" > 完成驱动添加和配置后，使用命令 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > scons --menuconfig< / span > 或 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > m< / span >
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( OneStep 命令 ) 对 SDK 进行编译。< / p >
< / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d165078e201__20250519091523" >
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< div class = "- topic/div div section" id = "id__id7" > < strong class = "+ topic/ph hi-d/b ph b" > 验证< / strong >
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< p class = "- topic/p p" data-ofbid = "d165078e207__20250519091523" > 烧写镜像，系统启动之后，通过 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > list_device< / span > 命令
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查看设备节点是否已成功枚举，如下所示：< / p > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__pre_wwg_4vp_wcc" data-ofbid = "id__pre_wwg_4vp_wcc" > list_device< / pre > < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "id__codeblock_utn_gnm_tdc" data-ofbid = "id__codeblock_utn_gnm_tdc" > device type ref count
-------- -------------------- ----------
...
gt911 Touch Device < span class = "hl-number" > 1< / span >
...
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< / pre > < p class = "- topic/p p" data-ofbid = "d165078e216__20250519091523" > 如果列表中出现 gt911 设备，表示已成功添加该设备。< / p > < / div >
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< / li >
< / ol >
< / section >
< / div >
< / article > < / main > < / div >
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< / div >
< / div >
< / div >
< / div >
< footer class = "navbar navbar-default wh_footer" >
< div class = " footer-container mx-auto " >
< title > footer def< / title >
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< style >
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.p1 {
font-family: FangZhengShuSong, Times, serif;
}
.p2 {
font-family: Arial, Helvetica, sans-serif;
}
.p3 {
font-family: "Lucida Console", "Courier New", monospace;
}
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< / style >
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< div class = "webhelp.fragment.footer" >
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< p class = "p1" > Copyright © 2019-2025 广东匠芯创科技有限公司. All rights reserved.< / p >
< / div >
< div >
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< div class = "generation_time" >
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Update Time: 2025-05-19
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< / div >
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< / div >
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< / div >
< / footer >
< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
< / div >
< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
< div id = "caption" > < / div >
< / div >
< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
< / body >
< / html >
