首先2025/03/25前发布的Neardi发布的固件及SDK默认还未适配RG255C-CN，拨号会报如下错误：
neardi@LPA3588:~$ sudo quectel-CM
[03-25_12:14:56:463] QConnectManager_Linux_V1.6.5
[03-25_12:14:56:465] Find /sys/bus/usb/devices/7-1.4 idVendor=0x2c7c idProduct=0x316, bus=0x007, dev=0x006
[03-25_12:14:56:471] network interface '' or qmidev '' is not exist
[03-25_12:14:56:472] atdevice_detect failed
[03-25_12:14:56:472] qmidevice_detect failed
配置VID、PID
SDK修改如下：
--- a/kernel/drivers/usb/serial/option.c
+++ b/kernel/drivers/usb/serial/option.c
@@ -2174,6 +2174,7 @@ static const struct usb_device_id option_ids[] = {
{ USB_DEVICE(0x2C7C, 0x0620) }, /* Quectel EG20 */
{ USB_DEVICE(0x2C7C, 0x0800) }, /* Quectel RG500Q/RM500Q/RG510Q/RM510Q */
{ USB_DEVICE(0x2C7C, 0x0900) }, /* Quectel RG500U */
+ { USB_DEVICE(0x2C7C, 0x0316) }, /* Quectel RG255C */
#endif
{ } /* Terminating entry */
};
@@ -2263,7 +2264,7 @@ static int option_probe(struct usb_serial *serial,
return -ENODEV;
//Quectel EC25&EC21&EG91&EG95&EG06&EP06&EM06&BG96&AG35&EG12&EG18's interface 4 can be used as USB network device (qmi,ecm,mbim)
- if((idProduct != 0x6002) &&(idProduct != 0x6000) && (idProduct != 0x6026)&& (idProduct != 0x0900)
+ if((idProduct != 0x6002) &&(idProduct != 0x6000) && (idProduct != 0x6026) && (idProduct != 0x0900) && (idProduct != 0x0316)
&&serial->interface->cur_altsetting->desc.bInterfaceNumber >= 4)
return -ENODEV;
更新qmi_wwan_q驱动
替换到sdk/kernel/drivers/net/usb/qmi_wwan_q.c
重新编译内核并烧录
./build.sh kernel //内核会生成在sdk/rockdev/boot.img
单独烧录boot.img的方法
烧录工具选择：下载镜像，发现loader设备，点击设备分区表（一定要执行，若提示报错，点确认），勾选boot，导入boot.img，执行
再次拨号
报Segmentation fault错误，日志如下：
neardi@LPA3588:~$ sudo quectel-CM
[03-25_12:25:44:455] QConnectManager_Linux_V1.6.5
[03-25_12:25:44:457] Find /sys/bus/usb/devices/7-1.4 idVendor=0x2c7c idProduct=0x316, bus=0x007, dev=0x004
[03-25_12:25:44:457] Auto find qmichannel = /dev/cdc-wdm0
[03-25_12:25:44:457] Auto find usbnet_adapter = wwan0
[03-25_12:25:44:457] netcard driver = qmi_wwan_q, driver version = V1.2.7_beta0315
[03-25_12:25:44:458] qmap_mode = 1, qmap_version = 5, qmap_size = 16384, muxid = 0x81, qmap_netcard = wwan0
[03-25_12:25:44:458] Modem works in QMI mode
[03-25_12:25:44:481] cdc_wdm_fd = 7
[03-25_12:25:44:556] Get clientWDS = 9
[03-25_12:25:44:588] Get clientDMS = 1
[03-25_12:25:44:620] Get clientNAS = 3
[03-25_12:25:44:652] Get clientUIM = 2
[03-25_12:25:44:684] Get clientWDA = 1
[03-25_12:25:44:716] requestBaseBandVersion RG255CCNAAR01A05M4G
[03-25_12:25:44:748] requestSetEthMode QMUXResult = 0x1, QMUXError = 0x46
[03-25_12:25:44:780] requestGetSIMStatus SIMStatus: SIM_READY
Segmentation fault
需要升级QConnectManager_Linux拨号工具，从工具的更新日志可以看出V1.6.6及之后的版本才支持 SDX35 系列，而RG255C-CN属于SDX35 系列
Release Notes
[V1.6.6]
Date: 1/12/2024
enhancement:
1. support SDX35 platform
fix:
升级QConnectManager_Linux工具步骤
此处我们将QConnectManager_Linux工具升级至V1.6.7
1、安装编译环境
sudo apt update
sudo apt install build-essential cmake libusb-1.0-0-dev
2、quectel-linux-android-qmi-wwan-driver-v129.zip拷贝到LPA3588并解压
3、编译
neardi@LPA3588:~/quectel/quectel-linux-android-qmi-wwan-driver-v129$ make
rm -rf *.o libmnl/*.o quectel-CM quectel-qmi-proxy quectel-mbim-proxy quectel-atc-proxy
gcc -Wall -Wextra -Werror -O1 quectel-qmi-proxy.c -o quectel-qmi-proxy -lpthread -ldl -lrt
gcc -Wall -Wextra -Werror -O1 quectel-mbim-proxy.c -o quectel-mbim-proxy -lpthread -ldl -lrt
gcc -Wall -Wextra -Werror -O1 quectel-atc-proxy.c atchannel.c at_tok.c util.c -o quectel-atc-proxy -lpthread -ldl -lrt
gcc -Wall -Wextra -Werror -O1 QmiWwanCM.c GobiNetCM.c main.c QCQMUX.c QMIThread.c util.c qmap_bridge_mode.c mbim-cm.c device.c atc.c atchannel.c at_tok.c udhcpc.c -o quectel-CM -lpthread -ldl -lrt
3、再次拨号
成功拨号日志如下：
GPS使用
如何打开GPS功能