A40I 平台Android7.1 系统程序 -4G EC200T

（1） a40_p1.mk文件修改

增加copy配置：

#EC200

PRODUCT_COPY_FILES += \

device/softwinner/a40-p1/r2ril/ec200/ip-down:system/etc/ppp/ip-down \

device/softwinner/a40-p1/r2ril/ec200/ip-up:system/etc/ppp/ip-up \

device/softwinner/a40-p1/r2ril/ec200/chat:system/bin/chat \

device/softwinner/a40-p1/r2ril/ec200/libreference-ril.so:system/lib/libreference-ril.so

说明：将EC200需要的文件libreference-ril.so，ip-up,ip-down,chat四个文件拷贝到新建文件ec200下，并通过mk文件拷贝到system对应目录下。

A40I默认系统程序采用3G模式，这里需要修改配置：

#BOARD_MODEL_TYPE := usb_modeswitch

BOARD_MODEL_TYPE := r2_4g

将原来的usb_modeswitch注释掉，开启r2_4g。

（2）修改文件目录

lichee/linux-3.10/drivers/usb/serial/option.c

增加内容：

static const struct usb_device_id option_ids[] = {

{ USB_DEVICE(0x2C7C, 0x6026) },/*Quectel EC200T*/

增加源码：

static int option_probe(struct usb_serial *serial,

const struct usb_device_id *id)

{

struct usb_interface_descriptor *iface_desc =

&serial->interface->cur_altsetting->desc;

struct usb_device_descriptor *dev_desc = &serial->dev->descriptor;

#if 1 //add for EC20

if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct != cpu_to_le16(0x9215)&& serial->interface->cur_altsetting->desc.bInterfaceNumber>= 4)

return -ENODEV;

if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C))

{

__u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);

//Quectel EC200&UC200's interface 0 can be used as USB Network device (ecm, rndis)

if (serial->interface->cur_altsetting->desc.bInterfaceClass != 0xFF)

return -ENODEV;

}

#endif

（3）修改目录文件：

若linux kernel >3.4 则需要修改]/drivers/usb/serial/option.c

static struct usb_serial_driver option_1port_device = {

#ifdef CONFIG_PM

.suspend = usb_wwan_suspend,

.resume = usb_wwan_resume,

#endif

//add by hp for EC200T

.reset_resume = usb_wwan_resume,

修改目录文件lichee/linux-3.10//drivers/usb/serial/usb-serial.c

/* Driver structure we register with the USB core */

static struct usb_driver usb_serial_driver = {

.name = "usbserial",

.probe = usb_serial_probe,

.disconnect = usb_serial_disconnect,

.suspend = usb_serial_suspend,

.resume = usb_serial_resume,

#if 1 //add by hp for EC200T

.reset_resume = usb_serial_resume,

#endif

.no_dynamic_id = 1,

.supports_autosuspend = 1,

};

（4）文件目录：drivers/usb/serial/qcserial.c

删除程序：

static const struct usb_device_id id_table[] = {

//{DEVICE_G1K(0x05c6, 0x9008)}, /* Generic Gobi QDL device */

//{USB_DEVICE(0x05c6, 0x9215)}, /* Acer Gobi 2000 Modem device (VP413) */

（5）文件目录：drivers/usb/serial/usb_wwan.c

增加：

static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,

int endpoint, int dir, void *ctx, char *buf, int len,

void (*callback) (struct urb *))

{

/* Fill URB using supplied data. */

usb_fill_bulk_urb(urb, serial->dev,

usb_sndbulkpipe(serial->dev, endpoint) | dir,

buf, len, callback, ctx);

#if 1 //Add by hp 20191216

if(dir == USB_DIR_OUT)

{

struct usb_device_descriptor *desc = &serial->dev->descriptor;

if (desc->idVendor == cpu_to_le16(0x2C7C))

urb->transfer_flags |= URB_ZERO_PACKET;

}

#endif

return urb;

}

（6）修改目录

Android_src)/system/core/rootdir/ueventd.rc

# CDMA radio interface MUX

/dev/ts0710mux* 0640 radio radio

/dev/ppp 0660 radio v*n

/dev/ttyUSB* 0660 radio radio

/dev/cdc-wdm* 0660 radio radio

/dev/qcqmi* 0660 radio radio

/dev/cdc-acm* 0660 radio radio

（7）修改：make menuconfig

[*] Device Drivers →

[*] USB Support →

[*] USB Serial Converter support →

[*] USB driver for GSM and CDMA modems

（8）修改：make menuconfig

[*] Device Drivers →

[*] Network device support --->

A40I 平台Android7.1 系统程序 -4G EC200T

USB Network Adapters --->

A40I 平台Android7.1 系统程序 -4G EC200T

（9）文件目录android/device/softwinner/a40-common/init.sun8iw11p1.rc

# ril related services hp modify for EC200 20191223

service ril-daemon /system/bin/rild -l /system/lib/libreference-ril.so

class main

socket rild stream 660 root radio

socket rild-debug stream 660 radio system

user root

group radio cache inet misc audio sdcard_rw log

三配置功能验证

（1）驱动验证

驱动加载成功后，log显示如下图 A40I 平台Android7.1 系统程序 -4G EC200T

配置成功后，用命令：ls /dev/ttyUSB*,可以看到设备/dev目录下面有USB0，USB1（AT），USB2(PPP)三个USB设备。

（2）lsusb 查看网络设备

A40I 平台Android7.1 系统程序 -4G EC200T

网络设备ID 2C7C,说明EC200设备已经加载成功。

（3）AT指令验证

# ls -la /dev/ttyUSB*ls -la

/dev/ttyUSB*crwxrwxrwx system system 188, 0 1970-01-01 08:00 ttyUSB0crwxrwxrwx system system 188, 1 1970-01-01 08:00 ttyUSB1crwxrwxrwx system system 188, 2 2018-04-19 19:10 ttyUSB2crwxrwxrwx system system 188, 3 2018-04-19 19:10 t

于是手动向EC200发 at 指令试试看打开一个终端编号A，

# cat /dev/ttyUSB1

用另外一个终端向ttyUSB1发命令 echo -en "AT\r\n" > /dev/ttyUSB1

可以在终端A上，看到OK响应信息。

若是切换网络：

执行命令：echo -en "AT+QCFG="usbnet",3" > /dev/ttyUSB1 这样配置ECM网卡；配置后，与SR9900冲突，二者只能选择一个。

需要配置为

echo -en "AT+QCFG="usbnet",1\r\n" > /dev/ttyUSB1 这样配置，就不与SR9900冲突，两个网口都可以用了。

附：查询当前模式
cat /dev/ttyUSB2 & echo -e “AT+QCFG=“usbnet”\r\n” >/dev/ttyUSB2
+QCFG: “usbnet”,1 为ECM模式
+QCFG: “usbnet”,0 为RNDS模式

两个终端方案：一个终端是adb shell，另外一个是debug 串口0.

截图如下：

adb：