1. Toy模板网首页
  2. > Toy博客

嵌入式linux驱动开发之移远4G模块EC800驱动移植指南

9月前 作者：特立独行的猫a 分类：Toy博客 阅读(70) 违法举报

这篇具有很好参考价值的文章主要介绍了嵌入式linux驱动开发之移远4G模块EC800驱动移植指南。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

回顾下移远4G模块移植过程， 还是蛮简单的。一通百通，无论是其他4G模块都是一样的。这里记录下过程，分享给有需要的人。环境使用正点原子的imax6ul开发板，板子默认支持中兴和移远EC20的驱动，这里要移植使用的是移远4G模块EC800。

环境准备

imax6ul开发板

虚拟机(Ubuntu18.04)

交叉编译工具链

内核源码

安装依赖

# 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*

内核配置

imx6ul开发板的imx_v7_defconfig的linux内核配置：

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

内核编译步骤：

#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

设备树编译：

#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

内核驱动模块编译

#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"

驱动移植

USB 转串口驱动修改

模块加载 USB 转串口 option 驱动程序后，会在/dev 目录下创建 ttyUSB0、ttyUSB1 和 ttyUSB2 等设备文件。以下介绍如何将 USB 转串口 option 驱动程序移植到 Linux 操作系统中。

移植的第一步，找到你的4G模块的usb的VID和PID添加进去。
为了识别模块，需将模块的 VID 和 PID 信息添加到[KERNEL]/drivers/usb/serial/option.c 文件中，对应的 VID 和 PID 。
以EC25列模块为例：高于2.6.30 的 Linux 内核版本，可在[KERNEL]/drivers/usb/serial/option.c 文件中添加以下语句：

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

我的EC800模块的PID和VID是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 */

使用 USBNet 驱动

接下来配置使模块的所有 USB 接口均绑定 USB 转串口 option 驱动程序，导致 USBNet 驱动程序接口无法工作。用户可以添加以下语句来防止 USBNet 驱动程序接口绑定 USB 转串口 option 驱动程序。

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;
}

添加零包机制

根据 USB 协议的要求，通过添加如下语句在 bulk-out 传输过程中添加处理零包的机制：
高于 2.6.34 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/usb_wwan.c 文件中添加以下语句。低于 2.6.35 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/option.c 文件中添加。

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 *))
{
	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;
}

添加 Reset-resume 机制

部分 USB 主机控制器或 USB hub 在 MCU 进入 Suspend/Sleep（挂起/睡眠）模式时会发生掉电或复位，并且在 MCU 退出 Suspend/Sleep 模式后不能使模块恢复。需要通过添加以下语句来启用 reset-resume机制。高于 3.4 的 Linux 内核版本，需在[KERNEL]/drivers/usb/serial/option.c 文件中添加以下语句。

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
};

拨号测试，无论使用ppp模式或者是ECM模式，都是需要拨号的。所谓的拨号直观上看就是通过串口操作AT指令，让模块联网的过程。所以开头的第一步，让能识别出ttyUSB0,ttyUSB1等是必须的。 以下是拨号的AT指令日志。

正式用建议用官方提供的拨号程序quectel-CM即可，简单且功能强大。

嵌入式linux驱动开发之移远4G模块EC800驱动移植指南,嵌入式应用开发实战,linux应用开发,linux,驱动开发,运维

 拨号源码下载

附上拨号源码应用程序quectel-CM的下载地址，可以直接正式用。该应用程序会自动查找设备并使用相应的驱动自动拨号：

拨号源码下载地址：

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

以下的拨号日志：

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

需要注意的问题是，上述编译内核和驱动时，把这几个驱动模块usbserial.ko，usb_wwan.ko，option.ko等都单独编译成驱动模块了，默认开机启动时并没有加载。

所以如果上述移植都ok,但是插上usb的4G模块后还不认，可以lsmod指令看下有没加载这几个驱动模块。测试可进入/lib/modules/4.1.15-g3dc0a4b/kernel/drivers/usb/serial/目录下，通过insmod命令加载驱动到内核系统中。注意，这几个有先后依赖顺序，必须先insmod usbserial.ko,再 usb_wwan.ko,最后加载option.ko.

以上操作后，应该能够在/dev/目录下看到ttyUSB0等这几个设备节点。

可通过串口命令测试下AT指令，看看模块是否有响应。

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

或者使用mincom串口打开com口，看下模块的AT指令输出。

网关路由配置

如果IP都已经自动获取到了还是无法联网，则需检查下路由对不对。

嵌入式linux驱动开发之移远4G模块EC800驱动移植指南,嵌入式应用开发实战,linux应用开发,linux,驱动开发,运维

 因为你的板子上可能用了以太网口，走的路由限制了。可以以下改下默认网关路由。

ip route show
route del default 
route add default dev usb0

设置自启动脚本

在Linux中，rc.local是一个启动脚本，位于/etc/rc.d/目录或/etc/init.d/目录下。它用于在系统启动时执行自定义命令或脚本。rc.local文件中的命令或脚本会在系统启动的最后阶段执行，可以用来执行一些需要在系统启动时运行的自定义任务。这些任务可以包括启动特定的服务、设置环境变量、挂载文件系统等。

rc.local文件的作用类似于其他Linux发行版中的/etc/rc.local文件，但在一些发行版中，如Ubuntu，已经不再默认提供rc.local文件。如果需要使用rc.local文件，可以自行创建并设置权限。

需要注意的是，rc.local文件中的命令或脚本应该是可执行的，并且应该在文件的末尾添加"exit 0"以确保正常退出。

在/etc/init.d/rc.local内容如下：

#! /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

在/etc/rc.local内容如下：

#!/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

自定义的myuser.sh脚本，内容如下，后续有需要自定义开机启动的内容都可以在这里添加。

#!/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 &

其他资源

嵌入式Linux驱动开发初级-内核模块编译方法_芬达在学习的博客-CSDN博客

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

Linux内核模块(Module)的单独编译 - 知乎

Linux设备驱动之IIO子系统——IIO框架及IIO数据结构

iio子系统框架分析_chongyuzhao的博客-CSDN博客

一文带你深入了解Linux IIO 子系统_iio框架_Linux加油站的博客-CSDN博客

linux kernel iio 架构

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

FS4412开发板使用Linux IIO驱动框架实现ADC驱动 - 代码先锋网

Linux route 命令_mayue_csdn的博客-CSDN博客

正点原子IMX6U仓库 (GuangzhouXingyi) - Gitee.com文章来源地址https://www.toymoban.com/news/detail-582862.html

到了这里，关于嵌入式linux驱动开发之移远4G模块EC800驱动移植指南的文章就介绍完了。如果您还想了解更多内容，请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章，希望大家以后多多支持TOY模板网！

本文来自互联网用户投稿，该文观点仅代表作者本人，不代表本站立场。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如若转载，请注明出处： 如若内容造成侵权/违法违规/事实不符，请点击违法举报进行投诉反馈，一经查实，立即删除！

分享到：
领支付宝红包 赞助服务器费用

相关文章

  • 正点原子嵌入式linux驱动开发——Linux WIFI驱动

    正点原子嵌入式linux驱动开发——Linux WIFI驱动

    WIFI的使用已经很常见了，手机、平板、汽车等等，虽然可以使用有线网络，但是有时候很多设备存在布线困难的情况，此时WIFI就是一个不错的选择。 正点原子STM32MP1开发板支持USB和SDIO这两种接口的WIFI ，本章就来学习一下如何在STM32MP1开发板上使用USB和SDIO这两种WIFI。 正点原

    2024年02月05日
    浏览(71)
  • 嵌入式Linux驱动开发——常见框架梳理

    嵌入式Linux驱动开发——常见框架梳理

    本文主要介绍了Linux驱动开发中一些常用的驱动框架，platform、input、iic、spi等，硬件平台使用的是正点原子的imx6ull开发板。 不管什么框架最后都是要追溯到配置IO的电气属性和复用功能 如果要使用外部中断，设备树节点中还需添加相关信息，什么边沿触发 1：module_init和mod

    2024年02月15日
    浏览(67)
  • 嵌入式Linux驱动开发 04：基于设备树的驱动开发

    嵌入式Linux驱动开发 04：基于设备树的驱动开发

    前面文章 《嵌入式Linux驱动开发 03：平台（platform）总线驱动模型》 引入了资源和驱动分离的概念，这篇文章将在前面基础上更进一步，引入设备树的概念。 在平台总线驱动模型中资源和驱动已经从逻辑上和代码组织上进行了分离，但每次调整资源还是会涉及到内核，所以现

    2024年02月16日
    浏览(69)
  • 正点原子嵌入式linux驱动开发——Linux 网络设备驱动

    正点原子嵌入式linux驱动开发——Linux 网络设备驱动

    网络驱动是linux里面驱动三巨头之一 ，linux下的网络功能非常强大，嵌入式linux中也常常用到网络功能。前面已经讲过了字符设备驱动和块设备驱动，本章就来学习一下linux里面的 网络设备驱动 。 本次笔记中讨论的都是有线网络！ 提起网络，一般想到的硬件就是“网卡”。在

    2024年01月17日
    浏览(70)
  • 【嵌入式Linux驱动】驱动开发调试相关的关系记录

    【嵌入式Linux驱动】驱动开发调试相关的关系记录

    https://www.processon.com/mindmap/64537772b546c76a2f37bd2f

    2024年02月02日
    浏览(56)
  • 嵌入式Linux驱动开发系列六：Makefile

    嵌入式Linux驱动开发系列六：Makefile

    Makefile是什么? gcc hello.c -o hello gcc aa.c bb.c cc.c dd.c ... make工具和Makefile make和Makefile是什么关系？ make工具:找出修改过的文件，根据依赖关系，找出受影响的相关文件，最后按照规则单独编译这些文件。 Makefile文件:记录依赖关系和编译规则。 必须要学精Makefile吗? 怎么学习Makefi

    2024年02月13日
    浏览(59)
  • 嵌入式Linux驱动开发（LCD屏幕专题）（三）

    嵌入式Linux驱动开发（LCD屏幕专题）（三）

    1. 硬件相关的操作 LCD驱动程序的核心就是： 分配fb_info 设置fb_info 注册fb_info 硬件相关的设置 硬件相关的设置又可以分为3部分： 引脚设置 时钟设置 LCD控制器设置 2. 在设备树里指定LCD参数 3. 编程 3.1 从设备树获得参数 时序参数、引脚极性等信息，都被保存在一个display_timi

    2024年02月09日
    浏览(62)
  • 嵌入式Linux驱动开发（LCD屏幕专题）（一）

    嵌入式Linux驱动开发（LCD屏幕专题）（一）

    总的分辨率是 yres*xres。 以下三种方式表示颜色 每个屏幕都有一个内存（framebuffer）如下图，内存中每块数据对用屏幕上的一个像素点，设置好LCD后，只需把颜色数据写入framebuffer即可。 Framebuffer驱动属于字符设备驱动，我们先说字符设备驱动框架如下图： 驱动主设备号 构造

    2024年02月09日
    浏览(61)
  • 嵌入式linux驱动开发篇之设备树

    嵌入式linux驱动开发篇之设备树

    设备树（Device Tree）是一种用于描述嵌入式系统硬件组件及其连接关系的数据结构。它被广泛用于嵌入式 Linux 系统，尤其是针对使用多种不同架构和平台的嵌入式系统。它是一种与硬件描述相关的中间表示形式，将硬件信息抽象成一种可移植的格式，使得操作系统和引导加载

    2024年02月22日
    浏览(68)
  • 嵌入式Linux驱动开发 02：将驱动程序添加到内核中

    嵌入式Linux驱动开发 02：将驱动程序添加到内核中

    在上一篇文章 《嵌入式Linux驱动开发 01：基础开发与使用》 中我们已经实现了最基础的驱动功能。在那篇文章中我们的驱动代码是独立于内核代码存放的，并且我们的驱动编译后也是一个独立的模块。在实际使用中将驱动代码放在内核代码中，并将驱动编译到内核中也是比较

    2023年04月09日
    浏览(73)

觉得文章有用就打赏一下文章作者

支付宝扫一扫打赏

博客赞助

微信扫一扫打赏

请作者喝杯咖啡吧~博客赞助

支付宝扫一扫领取红包，优惠每天领

二维码1

领取红包

二维码2

领红包