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< span class = "edit-link" style = "font-size:12px; opacity:0.6; text-align:right; vertical-align:middle" > < a target = "_blank" href = "http://aicdocco/taskstopics/sdk/peripheral/touch-revise-existing-gt911-drive.dita" > Edit online< / a > < / span > < h1 class = "- topic/title title topictitle1" id = "ariaid-title1" > 在 gt911 基础上修改新 CTP 驱动< / h1 >
< div class = "date inPage" > 16 May 2025< / div > < div style = "color: gray;" >
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< div class = "- topic/p p" data-ofbid = "d56986e36__20250519091508" > 本节以将 GT911 驱动修改为 CST826 驱动为例，描述通过修改已有 CTP 驱动进行 CTP 移植的详细流程。< ol class = "- topic/ol ol" id = "touch_revise_existing_gt911_drive__ol_xl5_n3w_12c" data-ofbid = "touch_revise_existing_gt911_drive__ol_xl5_n3w_12c" >
< li class = "- topic/li li" data-ofbid = "d56986e40__20250519091508" > < strong class = "+ topic/ph hi-d/b ph b" > 修改编译路径< / strong > < p class = "- topic/p p" data-ofbid = "d56986e43__20250519091508" > 打开 < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch/SConscript< / span > 文件，并将
GT911 文件编译路径描述修改为 CST826 文件编译路径。< / p > < div class = "- topic/p p" data-ofbid = "d56986e48__20250519091508" > 示例如下：< ul class = "- topic/ul ul" id = "touch_revise_existing_gt911_drive__ul_nyf_q3w_12c" data-ofbid = "touch_revise_existing_gt911_drive__ul_nyf_q3w_12c" >
< li class = "- topic/li li" data-ofbid = "d56986e52__20250519091508" >
< div class = "- topic/p p" data-ofbid = "d56986e54__20250519091508" > 修改前，
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文件编译路径：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_m4f_s3w_12c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_m4f_s3w_12c" > < 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 > )< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d56986e60__20250519091508" >
< div class = "- topic/p p" data-ofbid = "d56986e62__20250519091508" > 修改后，
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文件编译路径：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_sxn_t3w_12c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_sxn_t3w_12c" > < strong class = "hl-keyword" > if< / strong > GetDepend(< span class = "hl-string" > 'AIC_TOUCH_PANEL_CST826'< / span > ):
CPPPATH.append(cwd + < span class = "hl-string" > '/cst826/inc'< / span > )
src += Glob(< span class = "hl-string" > 'cst826/src/*.c'< / span > )< / pre > < / div >
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< / li >
< / ul > < / div > < / li >
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< li class = "- topic/li li" data-ofbid = "d56986e69__20250519091508" > < strong class = "+ topic/ph hi-d/b ph b" > 修改 menuconfig 设备配置< / strong > < div class = "- topic/p p" data-ofbid = "d56986e72__20250519091508" > 打开 < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch/Kconfig< / span >
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文件，将 GT911 的设备和设备名分别修改为 CST826 的设备和设备名：< ul class = "- topic/ul ul" id = "touch_revise_existing_gt911_drive__ul_m5c_bjw_12c" data-ofbid = "touch_revise_existing_gt911_drive__ul_m5c_bjw_12c" >
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< li class = "- topic/li li" data-ofbid = "d56986e79__20250519091508" >
< div class = "- topic/p p" data-ofbid = "d56986e81__20250519091508" > 修改前：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_ksh_2jw_12c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_ksh_2jw_12c" > choice
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prompt < span class = "hl-string" > "Select CTP device"< / span >
< strong class = "hl-keyword" > default< / strong > AIC_TOUCH_PANEL_GT911
depends on AIC_USING_CTP
config AIC_TOUCH_PANEL_GT911 < em class = "hl-comment" > //设备< / em >
bool < span class = "hl-string" > "GT911"< / span >
config AIC_TOUCH_PANEL_NAME
string
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "gt911"< / span > < strong class = "hl-keyword" > if< / strong > AIC_TOUCH_PANEL_GT911 < em class = "hl-comment" > //设备名< / em > < / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d56986e87__20250519091508" >
< div class = "- topic/p p" data-ofbid = "d56986e89__20250519091508" > 修改后：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_lg2_fjw_12c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_lg2_fjw_12c" > choice
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prompt < span class = "hl-string" > "Select CTP device"< / span >
< strong class = "hl-keyword" > default< / strong > AIC_TOUCH_PANEL_GT911
depends on AIC_USING_CTP
config AIC_TOUCH_PANEL_CST826 < em class = "hl-comment" > //设备< / em >
bool < span class = "hl-string" > "CST826"< / span >
config AIC_TOUCH_PANEL_NAME
string
< strong class = "hl-keyword" > default< / strong > < span class = "hl-string" > "cst826"< / span > < strong class = "hl-keyword" > if< / strong > AIC_TOUCH_PANEL_CST826 < em class = "hl-comment" > //设备名< / em > < / pre > < / div >
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< / li >
< / ul > < / div > < / li >
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< li class = "- topic/li li" data-ofbid = "d56986e96__20250519091508" > < strong class = "+ topic/ph hi-d/b ph b" > 修改文件名< / strong > < div class = "- topic/p p" data-ofbid = "d56986e99__20250519091508" > 打开 < span class = "+ topic/ph sw-d/filepath ph filepath" > bsp/peripheral/touch< / span > 文件目录，将
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< span class = "+ topic/ph sw-d/filepath ph filepath" > gt911< / span >
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文件夹名称及其源文件名称修改为< span class = "+ topic/ph sw-d/filepath ph filepath" > cst826< / span > ： < ul class = "- topic/ul ul" id = "touch_revise_existing_gt911_drive__ul_zml_4jw_12c" data-ofbid = "touch_revise_existing_gt911_drive__ul_zml_4jw_12c" >
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< li class = "- topic/li li" data-ofbid = "d56986e112__20250519091508" > 修改前：< div class = "- topic/p p" data-ofbid = "d56986e114__20250519091508" >
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< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "touch_revise_existing_gt911_drive__image_dbh_pjw_12c" src = "../../../images/ctp/gt911_code.png" / > < / div > < br / >
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< / div > < / li >
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< li class = "- topic/li li" data-ofbid = "d56986e119__20250519091508" > 修改后：< div class = "- topic/p p" data-ofbid = "d56986e121__20250519091508" >
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< br / > < div class = "imagecenter" > < img class = "- topic/image image imagecenter" id = "touch_revise_existing_gt911_drive__image_ed4_pjw_12c" src = "../../../images/ctp/cst826_code.png" / > < / div > < br / >
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< / div > < / li >
< / ul > < / div > < / li >
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< li class = "- topic/li li" data-ofbid = "d56986e127__20250519091508" >
< p class = "- topic/p p" data-ofbid = "d56986e129__20250519091508" > < strong class = "+ topic/ph hi-d/b ph b" > 修改源代码 < span class = "+ topic/ph sw-d/filepath ph filepath" > gt911.c< / span > 文件如下< / strong > < / p >
< div class = "- topic/p p" data-ofbid = "d56986e136__20250519091508" >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_rxn_qp1_b2c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_rxn_qp1_b2c" > #include < rtthread.h>
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#include < rtdevice.h>
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#include < string.h>
< em class = "hl-comment" > //#define DBG_TAG "gt911"< / em >
#< span class = "hl-directive" > define< / span > DBG_TAG < span class = "hl-string" > "cst826"< / span >
#< span class = "hl-directive" > define< / span > DBG_LVL DBG_INFO
#include < rtdbg.h>
< em class = "hl-comment" > //#include "gt911.h"< / em >
#include < span class = "hl-string" > "cst826.h"< / span >
< em class = "hl-comment" > //static struct rt_i2c_client gt911_client;< / em >
< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > struct< / strong > rt_i2c_client cst826_client;
< em class = "hl-comment" > //下面的数组是 gt911 的部分固件数组注释掉或者直接删除< / em >
< em class = "hl-comment" > // static rt_uint8_t GT911_CFG_TBL[] = {< / em >
< em class = "hl-comment" > // 0x6b, 0x00, 0x04, 0x58, 0x02, 0x05, 0x0d, 0x00, 0x01, 0x0f, 0x28, 0x0f,< / em >
< em class = "hl-comment" > // 0x50, 0x32, 0x03, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x8a, 0x2a, 0x0c, 0x45, 0x47, 0x0c, 0x08, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x40, 0x03, 0x2c, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x64, 0x32,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x28, 0x64, 0x94, 0xd5, 0x02, 0x07, 0x00, 0x00, 0x04,< / em >
< em class = "hl-comment" > // 0x95, 0x2c, 0x00, 0x8b, 0x34, 0x00, 0x82, 0x3f, 0x00, 0x7d, 0x4c, 0x00,< / em >
< em class = "hl-comment" > // 0x7a, 0x5b, 0x00, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x18, 0x16, 0x14, 0x12, 0x10, 0x0e, 0x0c, 0x0a,< / em >
< em class = "hl-comment" > // 0x08, 0x06, 0x04, 0x02, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x18,< / em >
< em class = "hl-comment" > // 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x24, 0x13, 0x12, 0x10, 0x0f,< / em >
< em class = "hl-comment" > // 0x0a, 0x08, 0x06, 0x04, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,< / em >
< em class = "hl-comment" > // 0x00, 0x00, 0x00, 0x00, 0x79, 0x01,< / em >
< em class = "hl-comment" > // };< / em >
< em class = "hl-comment" > /*
* I2C 写函数， ：
* 这个函数适用于所有的 TP， ，
*/< / em >
< em class = "hl-comment" > //static rt_err_t gt911_write_reg(struct rt_i2c_client *dev, rt_uint8_t *data, rt_uint8_t len)< / em >
< strong class = "hl-keyword" > static< / strong > rt_err_t cst826_write_reg(< strong class = "hl-keyword" > struct< / strong > rt_i2c_client *dev, rt_uint8_t *data, rt_uint8_t len)
{
< strong class = "hl-keyword" > struct< / strong > rt_i2c_msg msgs;
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msgs.addr = dev-> client_addr;
msgs.flags = RT_I2C_WR;
msgs.buf = data;
msgs.len = len;
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< strong class = "hl-keyword" > if< / strong > (rt_i2c_transfer(dev-> bus, & msgs, < span class = "hl-number" > 1< / span > ) == < span class = "hl-number" > 1< / span > ) {
< strong class = "hl-keyword" > return< / strong > RT_EOK;
} < strong class = "hl-keyword" > else< / strong > {
< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
}
}
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< em class = "hl-comment" > /*
* I2C 读函数， ： ，
* 这个函数适用于所有的 TP， ，
*/< / em >
< em class = "hl-comment" > //static rt_err_t gt911_read_regs(struct rt_i2c_client *dev, rt_uint8_t *reg,< / em >
< em class = "hl-comment" > // rt_uint8_t *data, rt_uint8_t len)< / em >
< strong class = "hl-keyword" > static< / strong > rt_err_t cst826_read_regs(< strong class = "hl-keyword" > struct< / strong > rt_i2c_client *dev, rt_uint8_t *reg,
rt_uint8_t *data, rt_uint8_t len)
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{
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< strong class = "hl-keyword" > struct< / strong > rt_i2c_msg msgs[< span class = "hl-number" > 2< / span > ];
msgs[< span class = "hl-number" > 0< / span > ].addr = dev-> client_addr;
msgs[< span class = "hl-number" > 0< / span > ].flags = RT_I2C_WR;
msgs[< span class = "hl-number" > 0< / span > ].buf = reg;
< em class = "hl-comment" > //msgs[0].len = GT911_REGITER_LEN;< / em >
msgs[< span class = "hl-number" > 0< / span > ].len = < span class = "hl-number" > 1< / span > ; < em class = "hl-comment" > //这里的 len 只能是 1 或者 2， ， < / em >
msgs[< span class = "hl-number" > 1< / span > ].addr = dev-> client_addr;
msgs[< span class = "hl-number" > 1< / span > ].flags = RT_I2C_RD;
msgs[< span class = "hl-number" > 1< / span > ].buf = data;
msgs[< span class = "hl-number" > 1< / span > ].len = len;
< strong class = "hl-keyword" > if< / strong > (rt_i2c_transfer(dev-> bus, msgs, < span class = "hl-number" > 2< / span > ) == < span class = "hl-number" > 2< / span > ) {
< strong class = "hl-keyword" > return< / strong > RT_EOK;
} < strong class = "hl-keyword" > else< / strong > {
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< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
}
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}
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< em class = "hl-comment" > /*
* 这个函数主要用于获取 TP 的 ID，
*/< / em >
< em class = "hl-comment" > //static rt_err_t gt911_get_product_id(struct rt_i2c_client *dev,< / em >
< em class = "hl-comment" > // rt_uint8_t *data, rt_uint8_t len)< / em >
< em class = "hl-comment" > // {< / em >
< em class = "hl-comment" > // rt_uint8_t reg[2];< / em >
< em class = "hl-comment" > // reg[0] = (rt_uint8_t)(GT911_PRODUCT_ID > > 8);< / em >
< em class = "hl-comment" > // reg[1] = (rt_uint8_t)(GT911_PRODUCT_ID & 0xff);< / em >
< em class = "hl-comment" > // if (gt911_read_regs(dev, reg, data, len) != RT_EOK) {< / em >
< em class = "hl-comment" > // LOG_E("read id failed");< / em >
< em class = "hl-comment" > // return -RT_ERROR;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // return RT_EOK;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > /*
* 这个函数主要用于获取 TP 的参数， ：
*/< / em >
< em class = "hl-comment" > //static rt_err_t gt911_get_info(struct rt_i2c_client *dev,< / em >
< em class = "hl-comment" > // struct rt_touch_info *info)< / em >
< em class = "hl-comment" > // {< / em >
< em class = "hl-comment" > // rt_uint8_t reg[2];< / em >
< em class = "hl-comment" > // rt_uint8_t out_info[7];< / em >
< em class = "hl-comment" > // rt_uint8_t out_len = 7;< / em >
< em class = "hl-comment" > // reg[0] = (rt_uint8_t)(GT911_CONFIG_REG > > 8);< / em >
< em class = "hl-comment" > // reg[1] = (rt_uint8_t)(GT911_CONFIG_REG & 0xFF);< / em >
< em class = "hl-comment" > // if (gt911_read_regs(dev, reg, out_info, out_len) != RT_EOK) {< / em >
< em class = "hl-comment" > // LOG_E("read info failed");< / em >
< em class = "hl-comment" > // return -RT_ERROR;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // info-> range_x = (out_info[2] < < 8) | out_info[1];< / em >
< em class = "hl-comment" > // info-> range_y = (out_info[4] < < 8) | out_info[3];< / em >
< em class = "hl-comment" > // info-> point_num = out_info[5] & 0x0f;< / em >
< em class = "hl-comment" > // if (info-> point_num > GT911_MAX_TOUCH) {< / em >
< em class = "hl-comment" > // info-> point_num = GT911_MAX_TOUCH;< / em >
< em class = "hl-comment" > // rt_kprintf("Warning,tp support more than 5 points, limited to 5 points\n");< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // return RT_EOK;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > /*
* 这里的静态变量主要是为了存储坐标点的数据，然后作逻辑判断
* GT911_MAX_TOUCH 是最大的触摸点个数也就是上面 info-> point_num 定义的 5，
* CST826M 固件目前支持最大触摸点个数为 2， ， ，
*/< / em >
< em class = "hl-comment" > //static int16_t pre_x[GT911_MAX_TOUCH] = { -1, -1, -1, -1, -1 };< / em >
< em class = "hl-comment" > //static int16_t pre_y[GT911_MAX_TOUCH] = { -1, -1, -1, -1, -1 };< / em >
< em class = "hl-comment" > //static int16_t pre_w[GT911_MAX_TOUCH] = { -1, -1, -1, -1, -1 };< / em >
< em class = "hl-comment" > //static rt_uint8_t s_tp_dowm[GT911_MAX_TOUCH] = {0};< / em >
< em class = "hl-comment" > //static struct rt_touch_data *read_data = RT_NULL;< / em >
< strong class = "hl-keyword" > static< / strong > int16_t pre_x[CST826_MAX_TOUCH] = { -< span class = "hl-number" > 1< / span > , -< span class = "hl-number" > 1< / span > };
< strong class = "hl-keyword" > static< / strong > int16_t pre_y[CST826_MAX_TOUCH] = { -< span class = "hl-number" > 1< / span > , -< span class = "hl-number" > 1< / span > };
< strong class = "hl-keyword" > static< / strong > rt_uint8_t s_tp_dowm[CST826_MAX_TOUCH] = {< span class = "hl-number" > 0< / span > };
< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > struct< / strong > rt_touch_data *read_data = RT_NULL;
< em class = "hl-comment" > /*
* 这个是抬起事件上报函数，修改函数名即可使用
* 如果定义上面的静态数组的时候没有定义 pre_w，
*/< / em >
< em class = "hl-comment" > //static void gt911_touch_up(void *buf, int8_t id)< / em >
< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > void< / strong > cst826_touch_up(< strong class = "hl-keyword" > void< / strong > *buf, int8_t id)
{
read_data = (< strong class = "hl-keyword" > struct< / strong > rt_touch_data *)buf;
< strong class = "hl-keyword" > if< / strong > (s_tp_dowm[id] == < span class = "hl-number" > 1< / span > ) {
s_tp_dowm[id] = < span class = "hl-number" > 0< / span > ;
read_data[id].event = RT_TOUCH_EVENT_UP;
} < strong class = "hl-keyword" > else< / strong > {
read_data[id].event = RT_TOUCH_EVENT_NONE;
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}
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read_data[id].timestamp = rt_touch_get_ts();
< em class = "hl-comment" > //read_data[id].width = pre_w[id];< / em >
read_data[id].x_coordinate = pre_x[id];
read_data[id].y_coordinate = pre_y[id];
read_data[id].track_id = id;
pre_x[id] = -< span class = "hl-number" > 1< / span > ; < em class = "hl-comment" > /* last point is none */< / em >
pre_y[id] = -< span class = "hl-number" > 1< / span > ;
< em class = "hl-comment" > //pre_w[id] = -1;< / em >
}
< em class = "hl-comment" > /*
* 这个是移动和按下事件函数，修改函数名即可使用
* 如果定义上面的静态数组的时候没有定义 pre_w,则下面代码关于 pre_w 的要删除
* 包括函数传参里面的 int16_t w 也要删除
*/< / em >
< em class = "hl-comment" > //static void gt911_touch_down(void *buf, int8_t id, int16_t x, int16_t y, int16_t w)< / em >
< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > void< / strong > cst826_touch_down(< strong class = "hl-keyword" > void< / strong > *buf, int8_t id, int16_t x, int16_t y)
{
read_data = (< strong class = "hl-keyword" > struct< / strong > rt_touch_data *)buf;
< strong class = "hl-keyword" > if< / strong > (s_tp_dowm[id] == < span class = "hl-number" > 1< / span > ) {
read_data[id].event = RT_TOUCH_EVENT_MOVE;
} < strong class = "hl-keyword" > else< / strong > {
read_data[id].event = RT_TOUCH_EVENT_DOWN;
s_tp_dowm[id] = < span class = "hl-number" > 1< / span > ;
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}
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read_data[id].timestamp = rt_touch_get_ts();
< em class = "hl-comment" > //read_data[id].width = w;< / em >
read_data[id].x_coordinate = x;
read_data[id].y_coordinate = y;
read_data[id].track_id = id;
pre_x[id] = x; < em class = "hl-comment" > /* save last point */< / em >
pre_y[id] = y;
< em class = "hl-comment" > //pre_w[id] = w;< / em >
}
< em class = "hl-comment" > //static rt_size_t gt911_read_point(struct rt_touch_device *touch, void *buf, rt_size_t read_num)< / em >
< strong class = "hl-keyword" > static< / strong > rt_size_t cst826_read_point(< strong class = "hl-keyword" > struct< / strong > rt_touch_device *touch, < strong class = "hl-keyword" > void< / strong > *buf, rt_size_t read_num)
{
< em class = "hl-comment" > //rt_uint8_t point_status = 0;< / em >
rt_uint8_t touch_num = < span class = "hl-number" > 0< / span > ;
< em class = "hl-comment" > //rt_uint8_t write_buf[3];< / em >
< em class = "hl-comment" > //rt_uint8_t cmd[2];< / em >
rt_uint8_t reg; < em class = "hl-comment" > //这里将 cmd[2]改成 reg 是因为 gt911 是 16bit 寄存器需要分开两个 byte 发送寄存器高低位， < / em >
< em class = "hl-comment" > //rt_uint8_t read_buf[8 * GT911_MAX_TOUCH] = { 0 };< / em >
rt_uint8_t read_buf[CST826_POINT_LEN * CST826_MAX_TOUCH + < span class = "hl-number" > 4< / span > ] = { < span class = "hl-number" > 0< / span > }; < em class = "hl-comment" > //read_buf 的长度取决于要读取多长的数据，长度计算：坐标点数据长度*坐标点个数+其他信息长度< / em >
rt_uint8_t read_index;
int8_t read_id = < span class = "hl-number" > 0< / span > ;
int16_t input_x = < span class = "hl-number" > 0< / span > ;
int16_t input_y = < span class = "hl-number" > 0< / span > ;
< em class = "hl-comment" > //int16_t input_w = 0; //cst826 没有宽度相关寄存器描述< / em >
< strong class = "hl-keyword" > static< / strong > rt_uint8_t pre_touch = < span class = "hl-number" > 0< / span > ;
< strong class = "hl-keyword" > static< / strong > int8_t pre_id[GT911_MAX_TOUCH] = { < span class = "hl-number" > 0< / span > };
rt_memset(buf, < span class = "hl-number" > 0< / span > , < strong class = "hl-keyword" > sizeof< / strong > (< strong class = "hl-keyword" > struct< / strong > rt_touch_data) * read_num);
< em class = "hl-comment" > /* point status register */< / em >
< em class = "hl-comment" > //cmd[0] = (rt_uint8_t)((GT911_READ_STATUS > > 8) & 0xFF);< / em >
< em class = "hl-comment" > //cmd[1] = (rt_uint8_t)(GT911_READ_STATUS & 0xFF);< / em >
< em class = "hl-comment" > //if (gt911_read_regs(& gt911_client, cmd, & point_status, 1) != RT_EOK) {< / em >
< em class = "hl-comment" > // LOG_D("read point failed\n");< / em >
< em class = "hl-comment" > // read_num = 0;< / em >
< em class = "hl-comment" > // goto exit_;< / em >
< em class = "hl-comment" > //}< / em >
reg = CST826_WORK_MODE;
< strong class = "hl-keyword" > if< / strong > (cst826_read_regs(& cst826_client, & reg, read_buf, < strong class = "hl-keyword" > sizeof< / strong > (read_buf)) != RT_EOK) {
LOG_D(< span class = "hl-string" > "read point failed\n"< / span > );
read_num = < span class = "hl-number" > 0< / span > ;
< strong class = "hl-keyword" > goto< / strong > __exit;
}
< em class = "hl-comment" > //if (point_status == 0) /* no data */< / em >
< em class = "hl-comment" > //{< / em >
< em class = "hl-comment" > // read_num = 0;< / em >
< em class = "hl-comment" > // goto exit_;< / em >
< em class = "hl-comment" > //}< / em >
< em class = "hl-comment" > //if ((point_status & 0x80) == 0) /* data is not ready */< / em >
< em class = "hl-comment" > //{< / em >
< em class = "hl-comment" > // read_num = 0;< / em >
< em class = "hl-comment" > // goto exit_;< / em >
< em class = "hl-comment" > //}< / em >
< em class = "hl-comment" > //touch_num = point_status & 0x0f; /* get point num */< / em >
< em class = "hl-comment" > //if (touch_num > GT911_MAX_TOUCH) /* point num is not correct */< / em >
< em class = "hl-comment" > //{< / em >
< em class = "hl-comment" > // read_num = 0;< / em >
< em class = "hl-comment" > // goto exit_;< / em >
< em class = "hl-comment" > //}< / em >
touch_num = read_buf[< span class = "hl-number" > 2< / span > ] & < span class = "hl-number" > 0x0f< / span > ; < em class = "hl-comment" > //这里的获取逻辑如果不了解建议去看第一章关于规格书的阅读< / em >
< strong class = "hl-keyword" > if< / strong > (touch_num > = < span class = "hl-number" > 2< / span > ) {
touch_num = < span class = "hl-number" > 2< / span > ;
}
< em class = "hl-comment" > //cmd[0] = (rt_uint8_t)((GT911_POINT1_REG > > 8) & 0xFF);< / em >
< em class = "hl-comment" > //cmd[1] = (rt_uint8_t)(GT911_POINT1_REG & 0xFF);< / em >
< em class = "hl-comment" > /* read point num is touch_num */< / em >
< em class = "hl-comment" > //if (gt911_read_regs(& gt911_client, cmd, read_buf,< / em >
< em class = "hl-comment" > // read_num * GT911_POINT_INFO_NUM) != RT_EOK) {< / em >
< em class = "hl-comment" > // LOG_D("read point failed\n");< / em >
< em class = "hl-comment" > // read_num = 0;< / em >
< em class = "hl-comment" > // goto exit_;< / em >
< em class = "hl-comment" > //}< / em >
< em class = "hl-comment" > /*
* 下面是对坐标事件的处理，一般可以直接照抄，根据规格书更换一下信息，后面会把部分规格书信息贴在本章节最后面
*/< / em >
< strong class = "hl-keyword" > if< / strong > (pre_touch > touch_num)
{
< strong class = "hl-keyword" > for< / strong > (read_index = < span class = "hl-number" > 0< / span > ; read_index < pre_touch; read_index++) {
rt_uint8_t j;
< strong class = "hl-keyword" > for< / strong > (j = < span class = "hl-number" > 0< / span > ; j < touch_num; j++) < em class = "hl-comment" > /* this time touch num */< / em >
{
< em class = "hl-comment" > //read_id = read_buf[j * 8] & 0x0F;< / em >
read_id = read_buf[< span class = "hl-number" > 5< / span > + CST826_POINT_LEN * j] & < span class = "hl-number" > 0xF0< / span > ;
< strong class = "hl-keyword" > if< / strong > (pre_id[read_index] == read_id) < em class = "hl-comment" > /* this id is not free */< / em >
< strong class = "hl-keyword" > break< / strong > ;
< strong class = "hl-keyword" > if< / strong > (j > = touch_num - < span class = "hl-number" > 1< / span > ) {
rt_uint8_t up_id;
up_id = pre_id[read_index];
< em class = "hl-comment" > //gt911_touch_up(buf, up_id);< / em >
cst826_touch_up(buf, up_id);
}
}
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}
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}
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< strong class = "hl-keyword" > if< / strong > (touch_num) < em class = "hl-comment" > /* point down */< / em >
{
rt_uint8_t off_set;
< strong class = "hl-keyword" > for< / strong > (read_index = < span class = "hl-number" > 0< / span > ; read_index < touch_num; read_index++) {
< em class = "hl-comment" > //off_set = read_index * 8;< / em >
off_set = read_index * CST826_POINT_LEN;
< em class = "hl-comment" > //read_id = read_buf[off_set] & 0x0f;< / em >
read_id = (read_buf[off_set + < span class = "hl-number" > 5< / span > ] & < span class = "hl-number" > 0xf0< / span > ) > > < span class = "hl-number" > 4< / span > ;
pre_id[read_index] = read_id;
< em class = "hl-comment" > //input_x = read_buf[off_set + 1] | (read_buf[off_set + 2] < < 8); /* x */< / em >
< em class = "hl-comment" > //input_y = read_buf[off_set + 3] | (read_buf[off_set + 4] < < 8); /* y */< / em >
< em class = "hl-comment" > //input_w = read_buf[off_set + 5] | (read_buf[off_set + 6] < < 8); /* size */< / em >
input_x = ((read_buf[off_set + < span class = "hl-number" > 3< / span > ] & < span class = "hl-number" > 0x0f< / span > ) < < < span class = "hl-number" > 8< / span > ) | read_buf[off_set + < span class = "hl-number" > 4< / span > ];
input_y = ((read_buf[off_set + < span class = "hl-number" > 5< / span > ] & < span class = "hl-number" > 0x0f< / span > ) < < < span class = "hl-number" > 8< / span > ) | read_buf[off_set + < span class = "hl-number" > 6< / span > ];
< em class = "hl-comment" > //gt911_touch_down(buf, read_id, input_x, input_y, input_w);< / em >
cst826_touch_down(buf, read_id, input_x, input_y);
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}
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} < strong class = "hl-keyword" > else< / strong > < strong class = "hl-keyword" > if< / strong > (pre_touch) {
< strong class = "hl-keyword" > for< / strong > (read_index = < span class = "hl-number" > 0< / span > ; read_index < pre_touch; read_index++) {
< em class = "hl-comment" > //gt911_touch_up(buf, pre_id[read_index]);< / em >
cst826_touch_up(buf, pre_id[read_index]);
}
}
pre_touch = touch_num;
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exit_:
< em class = "hl-comment" > //write_buf[0] = (rt_uint8_t)((GT911_READ_STATUS > > 8) & 0xFF);< / em >
< em class = "hl-comment" > //write_buf[1] = (rt_uint8_t)(GT911_READ_STATUS & 0xFF);< / em >
< em class = "hl-comment" > //write_buf[2] = 0x00;< / em >
< em class = "hl-comment" > //gt911_write_reg(& gt911_client, write_buf, 3);< / em >
< strong class = "hl-keyword" > return< / strong > read_num;
}
< em class = "hl-comment" > /*
* TP 的控制函数，一般来说只需要实现 RT_TOUCH_CTRL_GET_INFO，
*/< / em >
< em class = "hl-comment" > //static rt_err_t gt911_control(struct rt_touch_device *touch, int cmd, void *arg)< / em >
< strong class = "hl-keyword" > static< / strong > rt_err_t cst826_control(< strong class = "hl-keyword" > struct< / strong > rt_touch_device *touch, < strong class = "hl-keyword" > int< / strong > cmd, < strong class = "hl-keyword" > void< / strong > *data)
{
< em class = "hl-comment" > // if (cmd == RT_TOUCH_CTRL_GET_ID) {< / em >
< em class = "hl-comment" > // return gt911_get_product_id(& gt911_client, arg, 6);< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // if (cmd == RT_TOUCH_CTRL_GET_INFO) {< / em >
< em class = "hl-comment" > // return gt911_get_info(& gt911_client, arg);< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // rt_uint8_t buf[4];< / em >
< em class = "hl-comment" > // rt_uint8_t i = 0;< / em >
< em class = "hl-comment" > // rt_uint8_t *config;< / em >
< em class = "hl-comment" > // config =< / em >
< em class = "hl-comment" > // (rt_uint8_t *)rt_calloc(1, sizeof(GT911_CFG_TBL) + GT911_REGITER_LEN);< / em >
< em class = "hl-comment" > // if (config == RT_NULL) {< / em >
< em class = "hl-comment" > // LOG_D("malloc config memory failed\n");< / em >
< em class = "hl-comment" > // return -RT_ERROR;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // config[0] = (rt_uint8_t)((GT911_CONFIG_REG > > 8) & 0xFF);< / em >
< em class = "hl-comment" > // config[1] = (rt_uint8_t)(GT911_CONFIG_REG & 0xFF);< / em >
< em class = "hl-comment" > // memcpy(& config[2], GT911_CFG_TBL, sizeof(GT911_CFG_TBL));< / em >
< em class = "hl-comment" > // switch (cmd) {< / em >
< em class = "hl-comment" > // case RT_TOUCH_CTRL_SET_X_RANGE: {< / em >
< em class = "hl-comment" > // rt_uint16_t x_range;< / em >
< em class = "hl-comment" > // x_range = *(rt_uint16_t *)arg;< / em >
< em class = "hl-comment" > // config[4] = (rt_uint8_t)(x_range > > 8);< / em >
< em class = "hl-comment" > // config[3] = (rt_uint8_t)(x_range & 0xff);< / em >
< em class = "hl-comment" > // GT911_CFG_TBL[2] = config[4];< / em >
< em class = "hl-comment" > // GT911_CFG_TBL[1] = config[3];< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // case RT_TOUCH_CTRL_SET_Y_RANGE: {< / em >
< em class = "hl-comment" > // rt_uint16_t y_range;< / em >
< em class = "hl-comment" > // y_range = *(rt_uint16_t *)arg;< / em >
< em class = "hl-comment" > // config[6] = (rt_uint8_t)(y_range > > 8);< / em >
< em class = "hl-comment" > // config[5] = (rt_uint8_t)(y_range & 0xff);< / em >
< em class = "hl-comment" > // GT911_CFG_TBL[4] = config[6];< / em >
< em class = "hl-comment" > // GT911_CFG_TBL[3] = config[5];< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // case RT_TOUCH_CTRL_SET_X_TO_Y: {< / em >
< em class = "hl-comment" > // config[8] ^= (1 < < 3);< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // case RT_TOUCH_CTRL_SET_MODE: {< / em >
< em class = "hl-comment" > // rt_uint16_t trig_type;< / em >
< em class = "hl-comment" > // trig_type = *(rt_uint16_t *)arg;< / em >
< em class = "hl-comment" > // switch (trig_type) {< / em >
< em class = "hl-comment" > // case RT_DEVICE_FLAG_INT_RX:< / em >
< em class = "hl-comment" > // config[8] & = 0xFC;< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // case RT_DEVICE_FLAG_RDONLY:< / em >
< em class = "hl-comment" > // config[8] & = 0xFC;< / em >
< em class = "hl-comment" > // config[8] |= 0x02;< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // default:< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // default: {< / em >
< em class = "hl-comment" > // break;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // }< / em >
< strong class = "hl-keyword" > switch< / strong > (cmd)
{
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_GET_ID:
< strong class = "hl-keyword" > break< / strong > ;
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_GET_INFO:
info = (< strong class = "hl-keyword" > struct< / strong > rt_touch_info *)data;
< strong class = "hl-keyword" > if< / strong > (info == RT_NULL)
< strong class = "hl-keyword" > return< / strong > -RT_EINVAL;
info-> point_num = touch-> info.point_num;
info-> range_x = touch-> info.range_x;
info-> range_y = touch-> info.range_y;
info-> type = touch-> info.type;
info-> vendor = touch-> info.vendor;
< strong class = "hl-keyword" > break< / strong > ;
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_SET_MODE:
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_SET_X_RANGE:
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_SET_Y_RANGE:
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_SET_X_TO_Y:
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_DISABLE_INT:
< strong class = "hl-keyword" > case< / strong > RT_TOUCH_CTRL_ENABLE_INT:
< strong class = "hl-keyword" > default< / strong > :
< strong class = "hl-keyword" > break< / strong > ;
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}
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< em class = "hl-comment" > // if (gt911_write_reg(& gt911_client, config,< / em >
< em class = "hl-comment" > // sizeof(GT911_CFG_TBL) + GT911_ADDR_LEN) != RT_EOK) {< / em >
< em class = "hl-comment" > // LOG_D("send config failed");< / em >
< em class = "hl-comment" > // return -1;< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // buf[0] = (rt_uint8_t)((GT911_CHECK_SUM > > 8) & 0xFF);< / em >
< em class = "hl-comment" > // buf[1] = (rt_uint8_t)(GT911_CHECK_SUM & 0xFF);< / em >
< em class = "hl-comment" > // buf[2] = 0;< / em >
< em class = "hl-comment" > // for (i = GT911_ADDR_LEN; i < sizeof(GT911_CFG_TBL) + GT911_ADDR_LEN; i++) {< / em >
< em class = "hl-comment" > // buf[GT911_ADDR_LEN] += config[i];< / em >
< em class = "hl-comment" > // }< / em >
< em class = "hl-comment" > // buf[2] = (~buf[2]) + 1;< / em >
< em class = "hl-comment" > // buf[3] = 1;< / em >
< em class = "hl-comment" > // gt911_write_reg(& gt911_client, buf, 4);< / em >
< em class = "hl-comment" > // rt_free(config);< / em >
< strong class = "hl-keyword" > return< / strong > RT_EOK;
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}
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< em class = "hl-comment" > //static struct rt_touch_ops gt911_touch_ops = {< / em >
< em class = "hl-comment" > // .touch_readpoint = gt911_read_point,< / em >
< em class = "hl-comment" > // .touch_control = gt911_control,< / em >
< em class = "hl-comment" > //};< / em >
< em class = "hl-comment" > /*
* rt_touch_ops，
*/< / em >
< strong class = "hl-keyword" > const< / strong > < strong class = "hl-keyword" > struct< / strong > rt_touch_ops cst826_touch_ops =
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{
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.touch_readpoint = cst826_read_point,
.touch_control = cst826_control,
};
< em class = "hl-comment" > /*
* rt_touch_info 结构体是和 get_info 那个函数作用一致，无法从寄存器获取 TP 参数时可以通过这个结构体手动配置
*/< / em >
< strong class = "hl-keyword" > struct< / strong > rt_touch_info cst826_info =
{
RT_TOUCH_TYPE_CAPACITANCE,
RT_TOUCH_VENDOR_UNKNOWN,
< span class = "hl-number" > 2< / span > ,
(rt_int32_t)AIC_TOUCH_PANEL_CST826_X_RANGE,
(rt_int32_t)AIC_TOUCH_PANEL_CST826_Y_RANGE,
};
< em class = "hl-comment" > /*
* 这个函数主要实现对 TP 的初始操作
*/< / em >
< em class = "hl-comment" > //static int rt_hw_gt911_init(const char *name, struct rt_touch_config *cfg)< / em >
< strong class = "hl-keyword" > int< / strong > cst826_hw_init(< strong class = "hl-keyword" > const< / strong > < strong class = "hl-keyword" > char< / strong > *name, < strong class = "hl-keyword" > struct< / strong > rt_touch_config *cfg)
{
< strong class = "hl-keyword" > struct< / strong > rt_touch_device *touch_device = RT_NULL;
touch_device =
(< strong class = "hl-keyword" > struct< / strong > rt_touch_device *)rt_malloc(< strong class = "hl-keyword" > sizeof< / strong > (< strong class = "hl-keyword" > struct< / strong > rt_touch_device));
< strong class = "hl-keyword" > if< / strong > (touch_device == RT_NULL) {
LOG_E(< span class = "hl-string" > "touch device malloc fail"< / span > );
< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
}
rt_memset((< strong class = "hl-keyword" > void< / strong > *)touch_device, < span class = "hl-number" > 0< / span > , < strong class = "hl-keyword" > sizeof< / strong > (< strong class = "hl-keyword" > struct< / strong > rt_touch_device));
< em class = "hl-comment" > /* hw init*/< / em >
< em class = "hl-comment" > // rst output 0< / em >
< em class = "hl-comment" > //rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_OUTPUT);< / em >
< em class = "hl-comment" > //rt_pin_write(*(rt_uint8_t *)cfg-> user_data, PIN_LOW);< / em >
< em class = "hl-comment" > //rt_thread_delay(10);< / em >
< em class = "hl-comment" > // irq output 0< / em >
< em class = "hl-comment" > //rt_pin_mode(cfg-> irq_pin.pin, PIN_MODE_OUTPUT);< / em >
< em class = "hl-comment" > //rt_pin_write(cfg-> irq_pin.pin, PIN_LOW);< / em >
< em class = "hl-comment" > //rt_thread_delay(2);< / em >
< em class = "hl-comment" > // rst output 1< / em >
< em class = "hl-comment" > //rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_OUTPUT);< / em >
< em class = "hl-comment" > //rt_pin_write(*(rt_uint8_t *)cfg-> user_data, PIN_HIGH);< / em >
< em class = "hl-comment" > //rt_thread_delay(5);< / em >
< em class = "hl-comment" > // rst input< / em >
< em class = "hl-comment" > //rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_INPUT);< / em >
< em class = "hl-comment" > //irq output 0< / em >
< em class = "hl-comment" > //rt_pin_mode(cfg-> irq_pin.pin, PIN_MODE_OUTPUT);< / em >
< em class = "hl-comment" > //rt_pin_write(cfg-> irq_pin.pin, PIN_LOW);< / em >
< em class = "hl-comment" > //rt_thread_delay(50);< / em >
< em class = "hl-comment" > //rt_pin_mode(cfg-> irq_pin.pin, PIN_MODE_INPUT);< / em >
< em class = "hl-comment" > //这里时 TP 初始化时的上电时序，要根据规格书来进行配置< / em >
rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_OUTPUT);
rt_pin_write(*(rt_uint8_t *)cfg-> user_data, PIN_HIGH);
rt_thread_delay(< span class = "hl-number" > 10< / span > );
rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_OUTPUT);
rt_pin_write(*(rt_uint8_t *)cfg-> user_data, PIN_LOW);
rt_thread_delay(< span class = "hl-number" > 10< / span > );
rt_pin_mode(*(rt_uint8_t *)cfg-> user_data, PIN_MODE_OUTPUT);
rt_pin_write(*(rt_uint8_t *)cfg-> user_data, PIN_HIGH);
rt_thread_delay(< span class = "hl-number" > 100< / span > );
< em class = "hl-comment" > //gt911_client.bus = (struct rt_i2c_bus_device *)rt_device_find(cfg-> dev_name);< / em >
< em class = "hl-comment" > //if (gt911_client.bus == RT_NULL) {< / em >
< em class = "hl-comment" > // LOG_E("Can't find %s device", cfg-> dev_name);< / em >
< em class = "hl-comment" > // return -RT_ERROR;< / em >
< em class = "hl-comment" > //}< / em >
cst826_client.bus = (< strong class = "hl-keyword" > struct< / strong > rt_i2c_bus_device *)rt_device_find(cfg-> dev_name);
< strong class = "hl-keyword" > if< / strong > (cst826_client.bus == RT_NULL) {
LOG_E(< span class = "hl-string" > "Can't find %s device"< / span > , cfg-> dev_name);
< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
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}
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< strong class = "hl-keyword" > if< / strong > (rt_device_open((rt_device_t)gt911_client.bus, RT_DEVICE_FLAG_RDWR) !=
RT_EOK) {
LOG_E(< span class = "hl-string" > "open %s device failed"< / span > , cfg-> dev_name);
< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
}
< em class = "hl-comment" > //gt911_client.client_addr = GT911_ADDRESS_HIGH;< / em >
cst826_client.client_addr = CST826_SALVE_ADDR;
< em class = "hl-comment" > /* register touch device */< / em >
touch_device-> info = cst826_info; < em class = "hl-comment" > //这里就是手动配置 TP 信息赋值的地方，如果这里有赋值就不需要实现 get_info 这个函数< / em >
< em class = "hl-comment" > //touch_device-> info.type = RT_TOUCH_TYPE_CAPACITANCE;< / em >
< em class = "hl-comment" > //touch_device-> info.vendor = RT_TOUCH_VENDOR_GT;< / em >
rt_memcpy(& touch_device-> config, cfg, < strong class = "hl-keyword" > sizeof< / strong > (< strong class = "hl-keyword" > struct< / strong > rt_touch_config));
< em class = "hl-comment" > //touch_device-> ops = & gt911_touch_ops;< / em >
touch_device-> ops = & cst826_touch_ops;
< strong class = "hl-keyword" > if< / strong > (RT_EOK != rt_hw_touch_register(touch_device, name, RT_DEVICE_FLAG_INT_RX, RT_NULL)) {
< em class = "hl-comment" > //LOG_E("touch device gt911 init failed !!!");< / em >
LOG_E(< span class = "hl-string" > "touch device cst826 init failed !!!"< / span > );
< strong class = "hl-keyword" > return< / strong > -RT_ERROR;
}
< em class = "hl-comment" > //LOG_I("touch device gt911 init success");< / em >
LOG_I(< span class = "hl-string" > "touch device cst826 init success"< / span > );
< strong class = "hl-keyword" > return< / strong > RT_EOK;
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}
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< em class = "hl-comment" > /*
* 这个函数主要实现对 GPIO 的初始化，这个函数只需修改函数名即可复用
*/< / em >
< em class = "hl-comment" > //static int rt_gt911_gpio_cfg()< / em >
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< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > int< / strong > cst826_gpio_cfg()
{
< strong class = "hl-keyword" > unsigned< / strong > < strong class = "hl-keyword" > int< / strong > g, p;
< strong class = "hl-keyword" > long< / strong > pin;
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< em class = "hl-comment" > // RST< / em >
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pin = drv_pin_get(AIC_TOUCH_PANEL_RST_PIN);
g = GPIO_GROUP(pin);
p = GPIO_GROUP_PIN(pin);
hal_gpio_direction_input(g, p);
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< em class = "hl-comment" > // INT< / em >
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pin = drv_pin_get(AIC_TOUCH_PANEL_INT_PIN);
g = GPIO_GROUP(pin);
p = GPIO_GROUP_PIN(pin);
hal_gpio_direction_input(g, p);
hal_gpio_set_irq_mode(g, p, < span class = "hl-number" > 0< / span > );
< strong class = "hl-keyword" > return< / strong > < span class = "hl-number" > 0< / span > ;
}
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< em class = "hl-comment" > /*
* 这个函数主要注册整个设备，改个名字和里面的函数调用名即可复用,
*/< / em >
< em class = "hl-comment" > //static int rt_hw_gt911_port(void)< / em >
< strong class = "hl-keyword" > static< / strong > < strong class = "hl-keyword" > int< / strong > rt_hw_cst826_port(< strong class = "hl-keyword" > void< / strong > )
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{
< strong class = "hl-keyword" > struct< / strong > rt_touch_config cfg;
rt_uint8_t rst_pin;
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< em class = "hl-comment" > //rt_gt911_gpio_cfg();< / em >
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cst826_gpio_cfg();
rst_pin = drv_pin_get(AIC_TOUCH_PANEL_RST_PIN);
cfg.dev_name = AIC_TOUCH_PANEL_I2C_CHAN;
cfg.irq_pin.pin = drv_pin_get(AIC_TOUCH_PANEL_INT_PIN);
cfg.irq_pin.mode = PIN_MODE_INPUT;
cfg.user_data = & rst_pin;
#ifdef AIC_PM_DEMO
rt_pm_set_pin_wakeup_source(cfg.irq_pin.pin);
#endif
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rt_hw_gt911_init(AIC_TOUCH_PANEL_NAME, & cfg);
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< strong class = "hl-keyword" > return< / strong > < span class = "hl-number" > 0< / span > ;
}
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< em class = "hl-comment" > //INIT_DEVICE_EXPORT(rt_hw_gt911_port);< / em >
INIT_DEVICE_EXPORT(rt_hw_cst826_port);
< / pre >
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< / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d56986e143__20250519091508" >
< p class = "- topic/p p" data-ofbid = "d56986e145__20250519091508" > < strong class = "+ topic/ph hi-d/b ph b" > 修改源代码< span class = "+ topic/ph sw-d/filepath ph filepath" > gt911.h< / span > 文件如下< / strong > < / p >
< p class = "- topic/p p" data-ofbid = "d56986e152__20250519091508" > 修改前：< / p >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_fd3_nhq_w2c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_fd3_nhq_w2c" > #ifndef __GT911_H__
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#< span class = "hl-directive" > define< / span > __GT911_H__
#include < span class = "hl-string" > "drivers/touch.h"< / span >
#include < aic_hal_gpio.h>
#include < aic_drv_gpio.h>
#< span class = "hl-directive" > define< / span > GT911_ADDR_LEN < span class = "hl-number" > 2< / span >
#< span class = "hl-directive" > define< / span > GT911_REGITER_LEN < span class = "hl-number" > 2< / span >
#< span class = "hl-directive" > define< / span > GT911_MAX_TOUCH < span class = "hl-number" > 5< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT_INFO_NUM < span class = "hl-number" > 8< / span >
#< span class = "hl-directive" > define< / span > GT911_ADDRESS_HIGH < span class = "hl-number" > 0x5D< / span >
#< span class = "hl-directive" > define< / span > GT911_ADDRESS_LOW < span class = "hl-number" > 0x14< / span >
#< span class = "hl-directive" > define< / span > GT911_COMMAND_REG < span class = "hl-number" > 0x8040< / span >
#< span class = "hl-directive" > define< / span > GT911_CONFIG_REG < span class = "hl-number" > 0x8047< / span >
#< span class = "hl-directive" > define< / span > GT911_MOD_SWT_REG < span class = "hl-number" > 0x804D< / span >
#< span class = "hl-directive" > define< / span > GT911_PRODUCT_ID < span class = "hl-number" > 0x8140< / span >
#< span class = "hl-directive" > define< / span > GT911_VENDOR_ID < span class = "hl-number" > 0x814A< / span >
#< span class = "hl-directive" > define< / span > GT911_READ_STATUS < span class = "hl-number" > 0x814E< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT1_REG < span class = "hl-number" > 0x814F< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT2_REG < span class = "hl-number" > 0x8157< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT3_REG < span class = "hl-number" > 0x815F< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT4_REG < span class = "hl-number" > 0x8167< / span >
#< span class = "hl-directive" > define< / span > GT911_POINT5_REG < span class = "hl-number" > 0x816F< / span >
#< span class = "hl-directive" > define< / span > GT911_CHECK_SUM < span class = "hl-number" > 0x80FF< / span >
#endif < em class = "hl-comment" > /* gt911.h */< / em > < / pre >
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< p class = "- topic/p p" data-ofbid = "d56986e158__20250519091508" > 修改后：< / p >
< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "touch_revise_existing_gt911_drive__codeblock_ffv_4hq_w2c" data-ofbid = "touch_revise_existing_gt911_drive__codeblock_ffv_4hq_w2c" > #ifndef __CST826_H__
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#< span class = "hl-directive" > define< / span > __CST826_H__
#include < aic_hal_gpio.h>
#include < aic_drv_gpio.h>
#include < span class = "hl-string" > "drivers/touch.h"< / span >
#< span class = "hl-directive" > define< / span > CST826_MAX_TOUCH < span class = "hl-number" > 2< / span >
#< span class = "hl-directive" > define< / span > CST826_POINT_LEN < span class = "hl-number" > 6< / span >
#< span class = "hl-directive" > define< / span > CST826_SALVE_ADDR < span class = "hl-number" > 0x15< / span >
< em class = "hl-comment" > /* cst826 reg */< / em >
#< span class = "hl-directive" > define< / span > CST826_WORK_MODE < span class = "hl-number" > 0x00< / span >
#< span class = "hl-directive" > define< / span > CST826_PROX_STATE < span class = "hl-number" > 0x01< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH_NUM < span class = "hl-number" > 0x02< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_XH < span class = "hl-number" > 0x03< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_XL < span class = "hl-number" > 0x04< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_YH < span class = "hl-number" > 0x05< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_YL < span class = "hl-number" > 0x06< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_PRES < span class = "hl-number" > 0x07< / span >
#< span class = "hl-directive" > define< / span > CST826_TOUCH1_AREA < span class = "hl-number" > 0x08< / span >
#< span class = "hl-directive" > define< / span > CST826_SLEEP_MODE < span class = "hl-number" > 0xA5< / span >
#< span class = "hl-directive" > define< / span > CST826_FW_VERSION1 < span class = "hl-number" > 0xA6< / span >
#< span class = "hl-directive" > define< / span > CST826_FW_VERSION2 < span class = "hl-number" > 0xA7< / span >
#< span class = "hl-directive" > define< / span > CST826_MODULE_ID < span class = "hl-number" > 0xA8< / span >
#< span class = "hl-directive" > define< / span > CST826_PROJECT_NAME < span class = "hl-number" > 0xA9< / span >
#< span class = "hl-directive" > define< / span > CST826_CHIP_TYPE1 < span class = "hl-number" > 0xAA< / span >
#< span class = "hl-directive" > define< / span > CST826_CHIP_TYPE2 < span class = "hl-number" > 0xAB< / span >
#< span class = "hl-directive" > define< / span > CST826_CHECKSUM1 < span class = "hl-number" > 0xAC< / span >
#< span class = "hl-directive" > define< / span > CST826_CHECKSUM2 < span class = "hl-number" > 0xAD< / span >
#< span class = "hl-directive" > define< / span > CST826_PROX_MODE < span class = "hl-number" > 0xB0< / span >
#< span class = "hl-directive" > define< / span > CST826_GES_MODE < span class = "hl-number" > 0xD0< / span >
#< span class = "hl-directive" > define< / span > CST826_GESTURE_ID < span class = "hl-number" > 0xD3< / span >
#< span class = "hl-directive" > define< / span > AIC_TOUCH_PANEL_CST826_X_RANGE < span class = "hl-number" > 480< / span >
#< span class = "hl-directive" > define< / span > AIC_TOUCH_PANEL_CST826_Y_RANGE < span class = "hl-number" > 272< / span >
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#endif< / pre >
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< / li >
< / ol > < / div >
< / 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 >
