Guía de migración del controlador EC800 del módulo 4G de Quectel para el desarrollo de controladores integrados de Linux

News 2023-07-19 08:52:58 views: null

Mirando hacia atrás en el proceso de migración del módulo 4G, es bastante simple. Es lo mismo para otros módulos 4G. Registre el proceso aquí y compártalo con los necesitados. El entorno utiliza la placa de desarrollo imax6ul de Zhengdian Atom. La placa es compatible con los controladores ZTE y Quectel EC20 de forma predeterminada. Aquí, el módulo Quectel 4G EC800 se utiliza para el trasplante.

Preparación ambiental

placa de desarrollo imax6ul

Máquina virtual (Ubuntu18.04)

Cadena de herramientas de compilación cruzada

código fuente del núcleo

instalar dependencias

# 安装 lzop 工具，用于生成压缩或解压镜像
sudo apt-get install lzop 
# 安装 ncurese 相关库， U-boot 或者内核菜单显示时需要
sudo apt-get install libncurses*

configuración del núcleo

Configuración del kernel de Linux de imx_v7_defconfig de la placa de desarrollo imx6ul :

CONFIG_APM_EMULATION=y
CONFIG_KERNEL_LZO=y
CONFIG_SYSVIPC=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_CGROUPS=y
CONFIG_RELAY=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PERF_EVENTS=y
CONFIG_PRINTK_TIME=y
# CONFIG_SLUB_DEBUG is not set
# CONFIG_COMPAT_BRK is not set
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_MODULE_SRCVERSION_ALL=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_ARCH_MXC=y
CONFIG_SOC_IMX50=y
CONFIG_SOC_IMX53=y
CONFIG_SOC_IMX6Q=y
CONFIG_SOC_IMX6SL=y
CONFIG_SOC_IMX6SX=y
CONFIG_SOC_IMX6ULL=y
CONFIG_SOC_IMX7D=y
CONFIG_SOC_IMX6SLL=y
CONFIG_SOC_VF610=y
# CONFIG_SWP_EMULATE is not set
CONFIG_SMP=y
CONFIG_HAVE_ARM_ARCH_TIMER=y
CONFIG_VMSPLIT_2G=y
CONFIG_PREEMPT=y
CONFIG_AEABI=y
CONFIG_HIGHMEM=y
CONFIG_CMA=y
CONFIG_CMDLINE="noinitrd console=ttymxc0,115200"
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_INTERACTIVE=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_ARM_IMX6Q_CPUFREQ=y
CONFIG_ARM_IMX7D_CPUFREQ=y
CONFIG_CPU_IDLE=y
CONFIG_VFP=y
CONFIG_NEON=y
CONFIG_BINFMT_MISC=m
CONFIG_PM_DEBUG=y
CONFIG_PM_TEST_SUSPEND=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET_LRO is not set
CONFIG_IPV6=y
CONFIG_VLAN_8021Q=y
CONFIG_LLC2=y
CONFIG_CAN=y
CONFIG_CAN_FLEXCAN=y
CONFIG_CAN_M_CAN=y
CONFIG_BT=y
CONFIG_BT_RTKBTUSB=m
CONFIG_BT_RFCOMM=y
CONFIG_BT_RFCOMM_TTY=y
CONFIG_BT_BNEP=y
CONFIG_BT_BNEP_MC_FILTER=y
CONFIG_BT_BNEP_PROTO_FILTER=y
CONFIG_BT_HIDP=y
CONFIG_BT_HCIBTUSB=y
CONFIG_BT_HCIUART=y
CONFIG_BT_HCIUART_BCSP=y
CONFIG_BT_HCIUART_ATH3K=y
CONFIG_BT_HCIBCM203X=y
CONFIG_BT_ATH3K=y
CONFIG_CFG80211=y
CONFIG_CFG80211_WEXT=y
CONFIG_USB_ZD1201=m
CONFIG_MAC80211=y
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
# CONFIG_STANDALONE is not set
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=0
CONFIG_IMX_WEIM=y
CONFIG_CONNECTOR=y
CONFIG_MTD=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI=y
CONFIG_MTD_JEDECPROBE=y
CONFIG_MTD_CFI_INTELEXT=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_PHYSMAP_OF=y
CONFIG_MTD_DATAFLASH=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_SST25L=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_GPMI_NAND=y
CONFIG_MTD_NAND_MXC=y
CONFIG_MTD_SPI_NOR=y
CONFIG_SPI_FSL_QUADSPI=y
CONFIG_MTD_UBI=y
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=65536
CONFIG_SENSORS_FXOS8700=y
CONFIG_SENSORS_FXAS2100X=y
CONFIG_EEPROM_AT24=y
CONFIG_EEPROM_AT25=y
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
# CONFIG_SCSI_LOWLEVEL is not set
CONFIG_ATA=y
CONFIG_SATA_AHCI_PLATFORM=y
CONFIG_AHCI_IMX=y
CONFIG_PATA_IMX=y
CONFIG_NETDEVICES=y
# CONFIG_NET_VENDOR_BROADCOM is not set
CONFIG_CS89x0=y
CONFIG_CS89x0_PLATFORM=y
# CONFIG_NET_VENDOR_FARADAY is not set
# CONFIG_NET_VENDOR_INTEL is not set
# CONFIG_NET_VENDOR_MARVELL is not set
# CONFIG_NET_VENDOR_MICREL is not set
# CONFIG_NET_VENDOR_MICROCHIP is not set
# CONFIG_NET_VENDOR_NATSEMI is not set
# CONFIG_NET_VENDOR_SEEQ is not set
CONFIG_SMC91X=y
CONFIG_SMC911X=y
CONFIG_SMSC911X=y
CONFIG_SMSC_PHY=y
# CONFIG_NET_VENDOR_STMICRO is not set
CONFIG_MICREL_PHY=y
CONFIG_PPP=y
CONFIG_PPP_BSDCOMP=y
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_MPPE=y
CONFIG_PPP_MULTILINK=y
CONFIG_PPPOE=y
CONFIG_PPP_ASYNC=y
CONFIG_PPP_SYNC_TTY=y
CONFIG_USB_PEGASUS=m
CONFIG_USB_RTL8150=m
CONFIG_USB_RTL8152=m
CONFIG_USB_USBNET=y
CONFIG_USB_NET_CDC_EEM=m
CONFIG_BCMDHD=y
CONFIG_BCMDHD_SDIO=y
CONFIG_BCMDHD_FW_PATH="/lib/firmware/bcm/ZP_BCM4339/fw_bcmdhd.bin"
CONFIG_BCMDHD_NVRAM_PATH="/lib/firmware/bcm/ZP_BCM4339/bcmdhd.ZP.OOB.cal"
CONFIG_RTL_CARDS=m
CONFIG_RTL8188EUS=m
CONFIG_USB_GOBI_NET=m
CONFIG_EXTRA_RTL8192CU=m
CONFIG_BRIDGE=y
CONFIG_RFKILL=y
CONFIG_RFKILL_INPUT=y
# CONFIG_INPUT_MOUSEDEV_PSAUX is not set
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_EVBUG=m
CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_IMX=y
CONFIG_MOUSE_PS2=m
CONFIG_MOUSE_PS2_ELANTECH=y
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=y
CONFIG_TOUCHSCREEN_EGALAX=y
CONFIG_TOUCHSCREEN_ELAN_TS=y
CONFIG_TOUCHSCREEN_MAX11801=y
CONFIG_TOUCHSCREEN_IMX6UL_TSC=y
CONFIG_TOUCHSCREEN_MC13783=y
CONFIG_TOUCHSCREEN_TSC2007=y
CONFIG_TOUCHSCREEN_STMPE=y
CONFIG_TOUCHSCREEN_EDT_FT5X06=y
CONFIG_TOUCHSCREEN_GT9XX=y
CONFIG_INPUT_MISC=y
CONFIG_INPUT_MMA8450=y
CONFIG_INPUT_MPL3115=y
CONFIG_SENSOR_FXLS8471=y
CONFIG_INPUT_ISL29023=y
CONFIG_SERIO_SERPORT=m
# CONFIG_LEGACY_PTYS is not set
# CONFIG_DEVKMEM is not set
CONFIG_SERIAL_IMX=y
CONFIG_SERIAL_IMX_CONSOLE=y
CONFIG_SERIAL_FSL_LPUART=y
CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
CONFIG_FSL_OTP=y
CONFIG_LITEON_AP3216C=y
CONFIG_HW_RANDOM_IMX_RNG=y
# CONFIG_I2C_COMPAT is not set
CONFIG_I2C_CHARDEV=y
# CONFIG_I2C_HELPER_AUTO is not set
CONFIG_I2C_ALGOPCF=m
CONFIG_I2C_ALGOPCA=m
CONFIG_I2C_IMX=y
CONFIG_SPI=y
CONFIG_SPI_GPIO=y
CONFIG_SPI_IMX=y
CONFIG_SPI_SPIDEV=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_MAX732X=y
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_74X164=y
CONFIG_POWER_SUPPLY=y
CONFIG_SABRESD_MAX8903=y
CONFIG_POWER_RESET=y
CONFIG_POWER_RESET_SYSCON_POWEROFF=y
CONFIG_SENSORS_MAX17135=y
CONFIG_SENSORS_MAG3110=y
CONFIG_THERMAL=y
CONFIG_CPU_THERMAL=y
CONFIG_IMX_THERMAL=y
CONFIG_DEVICE_THERMAL=y
CONFIG_WATCHDOG=y
CONFIG_IMX2_WDT=y
CONFIG_MFD_DA9052_I2C=y
CONFIG_MFD_MC13XXX_SPI=y
CONFIG_MFD_MC13XXX_I2C=y
CONFIG_MFD_MAX17135=y
CONFIG_MFD_SI476X_CORE=y
CONFIG_MFD_STMPE=y
CONFIG_REGULATOR=y
CONFIG_REGULATOR_FIXED_VOLTAGE=y
CONFIG_REGULATOR_ANATOP=y
CONFIG_REGULATOR_DA9052=y
CONFIG_REGULATOR_GPIO=y
CONFIG_REGULATOR_MAX17135=y
CONFIG_REGULATOR_MC13783=y
CONFIG_REGULATOR_MC13892=y
CONFIG_REGULATOR_PFUZE100=y
CONFIG_MEDIA_SUPPORT=y
CONFIG_MEDIA_CAMERA_SUPPORT=y
CONFIG_MEDIA_RADIO_SUPPORT=y
CONFIG_MEDIA_RC_SUPPORT=y
CONFIG_RC_DEVICES=y
CONFIG_IR_GPIO_CIR=y
CONFIG_MEDIA_USB_SUPPORT=y
CONFIG_USB_VIDEO_CLASS=m
CONFIG_V4L_PLATFORM_DRIVERS=y
CONFIG_VIDEO_MXC_OUTPUT=y
CONFIG_VIDEO_MXC_CAPTURE=m
CONFIG_MXC_CAMERA_OV5640=m
CONFIG_MXC_CAMERA_OV5642=m
CONFIG_MXC_CAMERA_OV5640_MIPI=m
CONFIG_MXC_TVIN_ADV7180=m
CONFIG_MXC_IPU_DEVICE_QUEUE_SDC=m
CONFIG_VIDEO_MXC_IPU_OUTPUT=y
CONFIG_VIDEO_MXC_PXP_V4L2=y
CONFIG_VIDEO_MXC_CSI_CAMERA=m
CONFIG_MXC_VADC=m
CONFIG_MXC_MIPI_CSI=m
CONFIG_MXC_CAMERA_OV5647_MIPI=m
CONFIG_SOC_CAMERA=y
CONFIG_VIDEO_MX3=y
CONFIG_V4L_MEM2MEM_DRIVERS=y
CONFIG_VIDEO_CODA=y
CONFIG_RADIO_SI476X=y
CONFIG_SOC_CAMERA_OV2640=m
CONFIG_SOC_CAMERA_OV772X=m
CONFIG_DRM=y
CONFIG_DRM_VIVANTE=y
CONFIG_FB=y
CONFIG_FB_MXS=y
CONFIG_FB_MXC_SYNC_PANEL=y
CONFIG_FB_MXC_MIPI_DSI=y
CONFIG_FB_MXC_MIPI_DSI_SAMSUNG=y
CONFIG_FB_MXC_TRULY_WVGA_SYNC_PANEL=y
CONFIG_FB_MXC_TRULY_PANEL_TFT3P5079E=y
CONFIG_FB_MXC_TRULY_PANEL_TFT3P5581E=y
CONFIG_FB_MXC_LDB=y
CONFIG_FB_MXC_HDMI=y
CONFIG_FB_MXS_SII902X=y
CONFIG_FB_MXC_DCIC=m
CONFIG_HANNSTAR_CABC=y
CONFIG_FB_MXC_EINK_PANEL=y
CONFIG_FB_MXC_EINK_V2_PANEL=y
CONFIG_LCD_CLASS_DEVICE=y
CONFIG_LCD_L4F00242T03=y
CONFIG_LCD_PLATFORM=y
CONFIG_BACKLIGHT_PWM=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_LOGO=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_SOC=y
CONFIG_SND_IMX_SOC=y
CONFIG_SND_SOC_EUKREA_TLV320=y
CONFIG_SND_SOC_IMX_WM8960=y
CONFIG_SND_SOC_IMX_SII902X=y
CONFIG_SND_SOC_IMX_WM8958=y
CONFIG_SND_SOC_IMX_CS42888=y
CONFIG_SND_SOC_IMX_WM8962=y
CONFIG_SND_SOC_IMX_SGTL5000=y
CONFIG_SND_SOC_IMX_MQS=y
CONFIG_SND_SOC_IMX_SPDIF=y
CONFIG_SND_SOC_IMX_MC13783=y
CONFIG_SND_SOC_IMX_SI476X=y
CONFIG_SND_SOC_IMX_HDMI=y
CONFIG_USB=y
CONFIG_USB_OTG_WHITELIST=y
CONFIG_USB_OTG_FSM=y
CONFIG_USB_EHCI_HCD=y
CONFIG_USB_EHCI_MXC=y
CONFIG_USB_HCD_TEST_MODE=y
CONFIG_USB_ACM=m
CONFIG_USB_STORAGE=y
CONFIG_USB_CHIPIDEA=y
CONFIG_USB_CHIPIDEA_UDC=y
CONFIG_USB_CHIPIDEA_HOST=y
CONFIG_USB_SERIAL=m
CONFIG_USB_SERIAL_GENERIC=y
CONFIG_USB_SERIAL_FTDI_SIO=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_EHSET_TEST_FIXTURE=y
CONFIG_NOP_USB_XCEIV=y
CONFIG_USB_MXS_PHY=y
CONFIG_USB_GADGET=y
CONFIG_USB_CONFIGFS=m
CONFIG_USB_CONFIGFS_SERIAL=y
CONFIG_USB_CONFIGFS_ACM=y
CONFIG_USB_CONFIGFS_OBEX=y
CONFIG_USB_CONFIGFS_NCM=y
CONFIG_USB_CONFIGFS_ECM=y
CONFIG_USB_CONFIGFS_ECM_SUBSET=y
CONFIG_USB_CONFIGFS_RNDIS=y
CONFIG_USB_CONFIGFS_EEM=y
CONFIG_USB_CONFIGFS_MASS_STORAGE=y
CONFIG_USB_CONFIGFS_F_LB_SS=y
CONFIG_USB_CONFIGFS_F_FS=y
CONFIG_USB_ZERO=m
CONFIG_USB_ETH=m
CONFIG_USB_G_NCM=m
CONFIG_USB_GADGETFS=m
CONFIG_USB_MASS_STORAGE=m
CONFIG_USB_G_SERIAL=m
CONFIG_USB_SERIAL_CH341=m
CONFIG_USB_SERIAL_CP210X=m
CONFIG_MMC=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_SDHCI_ESDHC_IMX=y
CONFIG_MXC_IPU=y
CONFIG_MXC_IPU_V3_PRE=y
CONFIG_MXC_GPU_VIV=y
CONFIG_MXC_SIM=y
CONFIG_MXC_MIPI_CSI2=y
CONFIG_MXC_HDMI_CEC=y
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y
CONFIG_LEDS_GPIO=y
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=y
CONFIG_LEDS_TRIGGER_ONESHOT=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=y
CONFIG_LEDS_TRIGGER_GPIO=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_INTF_DEV_UIE_EMUL=y
CONFIG_RTC_DRV_MC13XXX=y
CONFIG_RTC_DRV_MXC=y
CONFIG_RTC_DRV_SNVS=y
CONFIG_DMADEVICES=y
CONFIG_MXC_PXP_V2=y
CONFIG_MXC_PXP_V3=y
CONFIG_IMX_SDMA=y
CONFIG_MXS_DMA=y
CONFIG_DMATEST=m
CONFIG_STAGING=y
CONFIG_STAGING_MEDIA=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_IIO=y
CONFIG_IMX7D_ADC=y
CONFIG_VF610_ADC=y
CONFIG_PWM=y
CONFIG_PWM_IMX=y
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_EXT4_FS=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_AUTOFS4_FS=y
CONFIG_FUSE_FS=y
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=y
CONFIG_TMPFS=y
CONFIG_JFFS2_FS=y
CONFIG_UBIFS_FS=y
CONFIG_NFS_FS=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_ROOT_NFS=y
CONFIG_NLS_DEFAULT="cp437"
CONFIG_NLS_CODEPAGE_437=y
CONFIG_FAT_DEFAULT_IOCHARSET="utf8"
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_UTF8=y
CONFIG_DEBUG_FS=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_SCHED_DEBUG is not set
# CONFIG_DEBUG_BUGVERBOSE is not set
# CONFIG_FTRACE is not set
CONFIG_SECURITYFS=y
CONFIG_CRYPTO_USER=y
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_CTS=y
CONFIG_CRYPTO_LRW=y
CONFIG_CRYPTO_XTS=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_RMD128=y
CONFIG_CRYPTO_RMD160=y
CONFIG_CRYPTO_RMD256=y
CONFIG_CRYPTO_RMD320=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_TGR192=y
CONFIG_CRYPTO_WP512=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_CAMELLIA=y
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_TWOFISH=y
# CONFIG_CRYPTO_ANSI_CPRNG is not set
CONFIG_CRYPTO_DEV_FSL_CAAM=y
CONFIG_CRYPTO_DEV_FSL_CAAM_SM=y
CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST=y
CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO=y
CONFIG_CRYPTO_DEV_MXS_DCP=y
CONFIG_CRC_CCITT=m
CONFIG_CRC_T10DIF=y
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
CONFIG_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y

Pasos de compilación del kernel:

#使用Yocto SDK里的GCC 5.3.0交叉编译器编译出厂Linux源码,可不用指定ARCH等，直接执行Make
source /opt/fsl-imx-x11/4.1.15-2.1.0/environment-setup-cortexa7hf-neon-poky-linux-gnueabi
#!/bin/bash
#编译前先清除
make distclean
#配置defconfig文件
make imx_v7_defconfig -j 16
#开始编译zImage
make zImage -j 16

Compilación del árbol de dispositivos:

#NandFlash类型核心板
#编译正点原子各种显示设备的设备树，若用户没有屏，
#启动时默认会选择imx6ull-14x14-nand-4.3-480x272-c.dtb加载
make imx6ull-14x14-nand-10.1-1280x800-c.dtb
make imx6ull-14x14-nand-7-1024x600-c.dtb
make imx6ull-14x14-nand-7-800x480-c.dtb
make imx6ull-14x14-nand-4.3-800x480-c.dtb
make imx6ull-14x14-nand-4.3-480x272-c.dtb
make imx6ull-14x14-nand-vga.dtb
make imx6ull-14x14-nand-hdmi.dtb

Compilación del módulo del controlador del kernel

#编译内核模块
make modules -j 16
#在当前目录下新建一个tmp目录，用于存放编译后的目标文件
if [ ! -e "./tmp" ]; then
    mkdir tmp
fi
rm -rf tmp/*
make modules_install INSTALL_MOD_PATH=tmp
cd tmp/lib/modules
tar -jcvf ../../modules.tar.bz2 .
cd -
rm -rf tmp/lib
#拷贝zImage到tmp目录下
cp arch/arm/boot/zImage tmp
#拷贝所有编译的设备树文件到当前的tmp目录下
cp arch/arm/boot/dts/imx6ull*.dtb tmp
echo "编译完成，请查看当前目录下的tmp文件夹查看编译好的目标文件"

Portabilidad del controlador

Modificación del controlador de puerto USB a serie

Después de que el módulo cargue el controlador de opción de puerto USB a serie, creará archivos de dispositivo como ttyUSB0, ttyUSB1 y ttyUSB2 en el directorio /dev. A continuación se describe cómo transferir el controlador de opción de USB a serie al sistema operativo Linux.

El primer paso para portar es encontrar el VID y el PID del usb de su módulo 4G y agregarlo.
Para identificar el módulo, la información de VID y PID del módulo debe agregarse al archivo [KERNEL]/drivers/usb/serial/option.c, correspondiente a VID y PID. Tome el módulo de la serie EC25 como ejemplo: para las versiones del kernel de Linux superiores a la 2.6.30, puede agregar la siguiente declaración en el archivo
[KERNEL]/drivers/usb/serial/option.c :

static const struct usb_device_id option_ids[] = {
#if 1 //Added by Quectel
{ USB_DEVICE(0x2C7C, 0x0125) },
#endif

El PID y VID de mi módulo EC800 son 0x2c7c,0x6002.

/* EC20,EC800 4G*/
#define QUECTEL_VENDOR_ID			0x2C7C
#define QUECTEL_PRODUCT_EC20		0X0125
#define QUECTEL_PRODUCT_EC800       0x6002
static const struct usb_device_id option_ids[] = {
	{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC20)},/* EC20*/
	{ USB_DEVICE(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EC800)},/* EC800*/
	{ USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_0117)},/* ME3630-w */
        { USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_0199)},/* ME3630-w */
        { USB_DEVICE(GOSUNCN_VENDOR_ID, GOSUNCN_PRODUCT_1476)},/* ME3630-w */

Uso del controlador USBNet

A continuación, configure para vincular todas las interfaces USB del módulo al controlador de opción de USB a serie, lo que hará que la interfaz del controlador USBNet no funcione. Los usuarios pueden agregar la siguiente declaración para evitar que la interfaz del controlador USBNet vincule el controlador de opción de USB a serie.

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;
	const struct option_blacklist_info *blacklist;

	/* GOSUNCN 4G modems */
	printk("idVendor=%x, idProduct=%x, bInterfaceNumber =%d\r\n",
					serial->dev->descriptor.idVendor,
					serial->dev->descriptor.idProduct,
					serial->interface->cur_altsetting->desc. bInterfaceNumber);
//..........


if (dev_desc->idVendor == cpu_to_le16(0x2c7C) &&
		iface_desc->bInterfaceNumber >= 4)
		return -ENODEV;

	if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {
                __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);
    		struct usb_interface_descriptor *intf = &serial->interface->cur_altsetting->desc;
    		if (intf->bInterfaceClass != 0xFF || intf->bInterfaceSubClass == 0x42) {
    		    //ECM, RNDIS, NCM, MBIM, ACM, UAC, ADB
    		    return -ENODEV;
    		}
    		if ((idProduct&0xF000) == 0x0000) {
    		    //MDM interface 4 is QMI
    		    if (intf->bInterfaceNumber == 4 && intf->bNumEndpoints == 3
    		    && intf->bInterfaceSubClass==0xFF && intf->bInterfaceProtocol == 0xFF){
    		        return -ENODEV;
    		    }
    		}
        }

	/* Store the blacklist info so we can use it during attach. */
	usb_set_serial_data(serial, (void *)blacklist);

	return 0;
}

Agregar mecanismo de paquete cero

De acuerdo con los requisitos del protocolo USB, se agrega un mecanismo para procesar paquetes cero durante la transmisión masiva agregando la siguiente declaración: Para
versiones del kernel de Linux superiores a 2.6.34, debe estar en [KERNEL] / drivers/ archivo usb/serial/usb_wwan.c Agregue la siguiente instrucción al archivo . Para versiones del kernel de Linux anteriores a la 2.6.35, debe agregarse en el archivo [KERNEL]/drivers/usb/serial/option.c.

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 *))
{
	struct usb_serial *serial = port->serial;
	struct urb *urb;

	urb = usb_alloc_urb(0, GFP_KERNEL);	/* No ISO */
	if (!urb)
		return NULL;

	usb_fill_bulk_urb(urb, serial->dev,
			  usb_sndbulkpipe(serial->dev, endpoint) | dir,
			  buf, len, callback, ctx);

	if (dir == USB_DIR_OUT) {
		struct usb_device_descriptor *desc = &serial->dev->descriptor;
		if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9090))
			urb->transfer_flags |= URB_ZERO_PACKET;
		if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9003))
			urb->transfer_flags |= URB_ZERO_PACKET;
		if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9215))
			urb->transfer_flags |= URB_ZERO_PACKET;
		if (desc->idVendor == cpu_to_le16(0x2C7C))
		urb->transfer_flags |= URB_ZERO_PACKET;
	}

	return urb;
}

Agregar mecanismo de reinicio y reanudación

Algunos controladores de host USB o concentradores USB se apagarán o reiniciarán cuando la MCU ingrese al modo de Suspensión/Reposo y no podrán restaurar el módulo después de que la MCU salga del modo de Suspensión/Reposo. El mecanismo de reinicio y reanudación debe habilitarse agregando la siguiente declaración. Para las versiones del kernel de Linux superiores a la 3.4, se deben agregar las siguientes declaraciones al archivo [KERNEL]/drivers/usb/serial/option.c.

static struct usb_serial_driver option_1port_device = {
……
    #ifdef CONFIG_PM
   .suspend = usb_wwan_suspend,
   .resume = usb_wwan_resume,
   #if 1 //Added by Quectel
   .reset_resume = usb_wwan_resume,
   #endif
   #endif
};

Para la prueba de acceso telefónico, ya sea que utilice el modo ppp o el modo ECM, se requiere acceso telefónico. Intuitivamente, el llamado acceso telefónico es el proceso de operar el comando AT a través del puerto serie para conectar el módulo a la red. Así que el primer paso al principio es poder identificar ttyUSB0, ttyUSB1, etc. Es necesario. El siguiente es el registro de comandos AT del dial.

Para uso oficial, se recomienda utilizar el marcador oficial quectel-CM , que es simple y potente.

 Descarga de código fuente de acceso telefónico

Se adjunta la dirección de descarga de la aplicación fuente de acceso telefónico quectel-CM, que se puede utilizar directamente. La aplicación encontrará automáticamente el dispositivo y marcará automáticamente con el controlador correspondiente:

Dirección de descarga del código fuente de acceso telefónico:

https://download.csdn.net/download/qq8864/88050116

Marque el registro a continuación:

root@ATK-IMX6U:~# ls
driver  quectel-CM  shell
root@ATK-IMX6U:~# ./quectel-CM
[07-22_07:32:47:407] QConnectManager_Linux_V1.6.4
[07-22_07:32:47:410] Find /sys/bus/usb/devices/1-1 idVendor=0x2c7c idProduct=0x6002, bus=0x001, dev=0x005
[07-22_07:32:47:412] Auto find qmichannel = /dev/ttyUSB1
[07-22_07:32:47:412] Auto find usbnet_adapter = usb0
[07-22_07:32:47:413] netcard driver = cdc_ether, driver version = 22-Aug-2005
[07-22_07:32:47:416] Modem works in ECM_RNDIS_NCM mode
[07-22_07:32:47:436] atc_fd = 7
[07-22_07:32:47:438] AT> ATE0Q0V1
[07-22_07:32:47:441] AT< ATE0Q0V1
[07-22_07:32:47:443] AT< OK
[07-22_07:32:48:444] AT> AT+QCFG="usbnet"
[07-22_07:32:48:447] AT< +QCFG: "usbnet",1
[07-22_07:32:48:447] AT< OK
[07-22_07:32:48:447] AT> AT+QNETDEVCTL=?
[07-22_07:32:48:449] AT< +QNETDEVCTL: (0-3),(1-15),(0-1)
[07-22_07:32:48:449] AT< OK
[07-22_07:32:48:450] AT> AT+CGREG=2
[07-22_07:32:48:451] AT< OK
[07-22_07:32:48:451] AT> AT+CEREG=2
[07-22_07:32:48:453] AT< OK
[07-22_07:32:48:454] AT> AT+C5GREG=2
[07-22_07:32:48:456] AT< ERROR
[07-22_07:32:48:456] AT> AT+QNETDEVSTATUS=?
[07-22_07:32:48:458] AT< ERROR
[07-22_07:32:48:458] AT> AT+QCFG="NAT"
[07-22_07:32:48:460] AT< +QCFG: "nat",1
[07-22_07:32:48:460] AT< OK
[07-22_07:32:48:461] AT> AT+CGMR
[07-22_07:32:48:463] AT< EC800MCNLCR06A05M04
[07-22_07:32:48:463] AT< OK
[07-22_07:32:48:463] AT> AT+CPIN?
[07-22_07:32:48:465] AT< +CPIN: READY
[07-22_07:32:48:465] AT< OK
[07-22_07:32:48:465] AT> AT+QCCID
[07-22_07:32:48:468] AT< +QCCID: 898604C6062260003592
[07-22_07:32:48:468] AT< OK
[07-22_07:32:48:468] requestGetICCID 898604C6062260003592
[07-22_07:32:48:468] AT> AT+CIMI
[07-22_07:32:48:471] AT< 460084674003592
[07-22_07:32:48:471] AT< OK
[07-22_07:32:48:471] requestGetIMSI 460084674003592
[07-22_07:32:48:471] AT> AT+QICSGP=1
[07-22_07:32:48:474] AT< +QICSGP: 3,"","","",0
[07-22_07:32:48:474] AT< OK
[07-22_07:32:48:474] requestGetProfile[1] ///0/IPV4V6
[07-22_07:32:48:474] AT> AT+COPS=3,0;+COPS?;+COPS=3,1;+COPS?;+COPS=3,2;+COPS?
[07-22_07:32:48:478] AT< +COPS: 0,0,"CHINA MOBILE",7
[07-22_07:32:48:478] AT< +COPS: 0,1,"CMCC",7
[07-22_07:32:48:478] AT< +COPS: 0,2,"46000",7
[07-22_07:32:48:478] AT< OK
[07-22_07:32:48:478] AT> AT+CEREG?
[07-22_07:32:48:480] AT< +CEREG: 2,1,"4978","EF555C2",7
[07-22_07:32:48:481] AT< OK
[07-22_07:32:48:481] AT> at+cops?
[07-22_07:32:48:483] AT< +COPS: 0,2,"46000",7
[07-22_07:32:48:483] AT< OK
[07-22_07:32:48:483] AT> at+qeng="servingcell"
[07-22_07:32:48:492] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-86,-3,-81,15,40
[07-22_07:32:48:492] AT< OK
[07-22_07:32:48:492] AT> AT+QNETDEVCTL?
[07-22_07:32:48:495] AT< +QNETDEVCTL: 0,0,0,0
[07-22_07:32:48:495] AT< OK
[07-22_07:32:48:496] ifconfig usb0 0.0.0.0
[07-22_07:32:48:547] ifconfig usb0 down
[07-22_07:32:48:607] AT> AT+CGACT?
[07-22_07:32:48:611] AT< +CGACT: 1,1
[07-22_07:32:48:611] AT< OK
[07-22_07:32:48:611] AT> AT+QNETDEVCTL=1,1,1
[07-22_07:32:50:613] AT< OK
[07-22_07:32:50:614] AT> AT+CGPADDR=1
[07-22_07:32:50:621] AT< +CGPADDR: 1,"10.68.39.96","::0:0:0:0:0:0:0"
[07-22_07:32:50:621] AT< OK
[07-22_07:32:50:621] requestGetIPAddress 10.68.39.96
[07-22_07:32:50:622] AT> at+cops?
[07-22_07:32:50:624] AT< +COPS: 0,2,"46000",7
[07-22_07:32:50:624] AT< OK
[07-22_07:32:50:625] AT> at+qeng="servingcell"
[07-22_07:32:50:633] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-4,-81,14,40
[07-22_07:32:50:633] AT< OK
[07-22_07:32:50:634] AT> AT+QNETDEVCTL?
[07-22_07:32:50:635] AT< +QNETDEVSTATUS: 1
[07-22_07:32:50:636] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:32:50:636] AT< OK
[07-22_07:32:50:637] AT> AT+CGACT?
[07-22_07:32:50:640] AT< +CGACT: 1,1
[07-22_07:32:50:640] AT< OK
[07-22_07:32:50:641] ifconfig usb0 up
[07-22_07:32:50:701] busybox udhcpc -f -n -q -t 5 -i usb0
[07-22_07:32:50:741] udhcpc (v1.24.1) started
[07-22_07:32:50:947] Sending discover...
[07-22_07:32:51:007] Sending select for 10.68.39.96...
[07-22_07:32:51:067] Lease of 10.68.39.96 obtained, lease time 86400
[07-22_07:32:51:227] /etc/udhcpc.d/50default: Adding DNS 120.196.165.7
[07-22_07:32:51:228] /etc/udhcpc.d/50default: Adding DNS 221.179.38.7
[07-22_07:32:51:257] AT> at+cops?
[07-22_07:32:51:260] AT< +COPS: 0,2,"46000",7
[07-22_07:32:51:261] AT< OK
[07-22_07:32:51:261] AT> at+qeng="servingcell"
[07-22_07:32:51:267] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,40
[07-22_07:32:51:267] AT< OK
[07-22_07:32:51:267] AT> AT+QNETDEVCTL?
[07-22_07:32:51:270] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:32:51:270] AT< OK
[07-22_07:32:51:270] AT> AT+CGACT?
[07-22_07:32:51:274] AT< +CGACT: 1,1
[07-22_07:32:51:274] AT< OK
[07-22_07:33:06:288] AT> at+cops?
[07-22_07:33:06:291] AT< +COPS: 0,2,"46000",7
[07-22_07:33:06:291] AT< OK
[07-22_07:33:06:291] AT> at+qeng="servingcell"
[07-22_07:33:06:299] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,14,40
[07-22_07:33:06:299] AT< OK
[07-22_07:33:06:299] AT> AT+QNETDEVCTL?
[07-22_07:33:06:302] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:33:06:302] AT< OK
[07-22_07:33:06:302] AT> AT+CGACT?
[07-22_07:33:06:306] AT< +CGACT: 1,1
[07-22_07:33:06:306] AT< OK
[07-22_07:33:21:317] AT> at+cops?
[07-22_07:33:21:320] AT< +COPS: 0,2,"46000",7
[07-22_07:33:21:321] AT< OK
[07-22_07:33:21:321] AT> at+qeng="servingcell"
[07-22_07:33:21:328] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,39
[07-22_07:33:21:328] AT< OK
[07-22_07:33:21:328] AT> AT+QNETDEVCTL?
[07-22_07:33:21:331] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:33:21:331] AT< OK
[07-22_07:33:21:331] AT> AT+CGACT?
[07-22_07:33:21:335] AT< +CGACT: 1,1
[07-22_07:33:21:335] AT< OK
[07-22_07:33:36:346] AT> at+cops?
[07-22_07:33:36:349] AT< +COPS: 0,2,"46000",7
[07-22_07:33:36:349] AT< OK
[07-22_07:33:36:349] AT> at+qeng="servingcell"
[07-22_07:33:36:356] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-87,-3,-81,15,39
[07-22_07:33:36:356] AT< OK
[07-22_07:33:36:357] AT> AT+QNETDEVCTL?
[07-22_07:33:36:359] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:33:36:360] AT< OK
[07-22_07:33:36:360] AT> AT+CGACT?
[07-22_07:33:36:363] AT< +CGACT: 1,1
[07-22_07:33:36:364] AT< OK
[07-22_07:33:51:366] AT> at+cops?
[07-22_07:33:51:369] AT< +COPS: 0,2,"46000",7
[07-22_07:33:51:369] AT< OK
[07-22_07:33:51:370] AT> at+qeng="servingcell"
[07-22_07:33:51:378] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-88,-3,-81,14,39
[07-22_07:33:51:379] AT< OK
[07-22_07:33:51:379] AT> AT+QNETDEVCTL?
[07-22_07:33:51:381] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:33:51:381] AT< OK
[07-22_07:33:51:382] AT> AT+CGACT?
[07-22_07:33:51:385] AT< +CGACT: 1,1
[07-22_07:33:51:385] AT< OK
[07-22_07:34:06:393] AT> at+cops?
[07-22_07:34:06:396] AT< +COPS: 0,2,"46000",7
[07-22_07:34:06:397] AT< OK
[07-22_07:34:06:397] AT> at+qeng="servingcell"
[07-22_07:34:06:404] AT< +QENG: "servingcell","NOCONN","LTE","TDD",460,00,EF555C2,316,41134,41,5,5,4978,-88,-4,-81,14,39
[07-22_07:34:06:405] AT< OK
[07-22_07:34:06:405] AT> AT+QNETDEVCTL?
[07-22_07:34:06:408] AT< +QNETDEVCTL: 1,1,1,1
[07-22_07:34:06:408] AT< OK
[07-22_07:34:06:408] AT> AT+CGACT?
[07-22_07:34:06:412] AT< +CGACT: 1,1
[07-22_07:34:06:412] AT< OK

El problema a tener en cuenta es que al compilar el kernel y los controladores anteriores, estos módulos de controlador usbserial.ko, usb_wwan.ko, option.ko, etc. se compilan en módulos de controlador por separado y no se cargan de forma predeterminada al arrancar.

Entonces, si el trasplante anterior está bien, pero el módulo usb 4G no se reconoce después de enchufarlo, puede usar el comando lsmod para ver si estos módulos de controlador están cargados. La prueba puede ingresar al directorio /lib/modules/4.1.15-g3dc0a4b/kernel/drivers/usb/serial/ y cargar el controlador en el sistema kernel a través del comando insmod. Tenga en cuenta que estos tienen una secuencia de dependencias, primero debe insmod usbserial.ko, luego usb_wwan.ko y finalmente cargar option.ko.

Después de las operaciones anteriores, debería poder ver estos nodos de dispositivos como ttyUSB0 en el directorio /dev/.

Puede probar el comando AT a través del comando del puerto serie para ver si el módulo responde.

通过串口发送AT命令
echo -e "AT+QCFG=\"usbnet\",0\r\n" > /dev/ttyUSB2    #设定模式

O use el puerto serie mincom para abrir el puerto com y ver la salida del comando AT del módulo.

Configuración de enrutamiento de puerta de enlace

Si la IP se obtuvo automáticamente pero aún no se puede conectar a Internet, debe verificar si el enrutamiento es correcto.

 Debido a que el puerto Ethernet puede usarse en su placa, el enrutamiento es limitado. Puede cambiar la ruta de la puerta de enlace predeterminada de la siguiente manera.

ip route show
route del default 
route add default dev usb0

Establecer secuencia de comandos de inicio automático

En Linux, rc.local es un script de inicio ubicado en el directorio /etc/rc.d/ o en el directorio /etc/init.d/. Se utiliza para ejecutar comandos personalizados o secuencias de comandos al iniciar el sistema. Los comandos o scripts en el archivo rc.local se ejecutarán en la última etapa del inicio del sistema y se pueden usar para realizar algunas tareas personalizadas que deben ejecutarse al iniciar el sistema. Estas tareas pueden incluir el inicio de servicios específicos, la configuración de variables de entorno, el montaje de sistemas de archivos y más.

La función del archivo rc.local es similar al archivo /etc/rc.local en otras distribuciones de Linux, pero en algunas distribuciones, como Ubuntu, el archivo rc.local ya no se proporciona de forma predeterminada. Si necesita usar el archivo rc.local, puede crearlo usted mismo y establecer permisos.

Debe tenerse en cuenta que los comandos o scripts en el archivo rc.local deben ser ejecutables, y debe agregarse "exit 0" al final del archivo para garantizar una salida normal.

El contenido de /etc/init.d/rc.local es el siguiente:

#! /bin/sh
### BEGIN INIT INFO
# Provides:          rc.local
# Required-Start:    $all
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:
# Short-Description: Run /etc/rc.local if it exist
### END INIT INFO

PATH=/sbin:/usr/sbin:/bin:/usr/bin

do_start() {
	if [ -x /etc/rc.local ]; then
		echo -n "Running local boot scripts (/etc/rc.local)"
		/etc/rc.local
		[ $? = 0 ] && echo "." || echo "error"
		return $ES
	fi
}

case "$1" in
    start)
	do_start
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

El contenido de /etc/rc.local es el siguiente:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.


echo 30000 >  /proc/sys/vm/min_free_kbytes
source /etc/profile                  
/opt/QDesktop >/dev/null 2>&1 &

/etc/myuser.sh
exit 0

El contenido de la secuencia de comandos myuser.sh personalizada es el siguiente, y cualquier contenido posterior que deba personalizarse para el arranque se puede agregar aquí.

#!/bin/bash
echo "=================user define shell exec..."
insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/usbserial.ko
insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/usb_wwan.ko
insmod /lib/modules/$(uname -r)/kernel/drivers/usb/serial/option.ko
ifconfig eth0 192.168.21.96 netmask 255.255.255.0

route add gw 192.168.21.1
route del default
route add default dev usb0

quectel-CM &

otros recursos

Embedded Linux Driver Development Elementary - Método de compilación del módulo Kernel - Fanta Learning Blog - CSDN Blog

https://www.cnblogs.com/dream397/p/13984263.html

Compilación separada de los módulos del kernel de Linux (Módulo) - Zhihu

Subsistema IIO del controlador de dispositivo Linux: marco IIO y estructura de datos IIO

Análisis del marco del subsistema iio - blog de chongyuzhao - blog de CSDN

Este artículo lo lleva a una comprensión profunda del subsistema Linux IIO_marco iio_blog de la estación de servicio Linux-blog CSDN

arquitectura linux kernel iii

https://i.vycc.cn/article/1164591.html

La placa de desarrollo FS4412 utiliza el marco del controlador Linux IIO para realizar el controlador ADC: se busca programador

Ruta de Linux blog de command_mayue_csdn-blog de CSDN

Almacén Puntual Atom IMX6U (GuangzhouXingyi) - Gitee.com

Supongo que te gusta

Origin blog.csdn.net/qq8864/article/details/131712670
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