# 公版系统代码

**Repository Path**: magic77elva/public-version-system-code

## Basic Information

- **Project Name**: 公版系统代码
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-03-14
- **Last Updated**: 2024-11-14

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 现在对于uboot和linux都是用启阳的编译链:

  `arm-fsl-linux-gnueabi-gcc-4.6.2`

## 1、编译mfgtool固件方法：
  内核：
  `make imx_v7_mfg_defconfig`
  `make -j16`

  u-boot:
  uboot不识别主要是编译链的问题,他只能识别低版本的编译链,用高版本的编译链会导致识别不了;
  `source /etc/profile`

  当前使用的是arm-fsl-linux-gnueabi-gcc-4.6.2

  `export PATH=/opt/qiyang/fsl-linaro-toolchain/bin/:$PATH`

  `make mx6qsabresd_defconfig`

  `make all -j16`
  
## 2、编译内核：
  道岔缺口：

  `make imx_6q_dc_defconfig`

  集通铁塔：

  `make imx_6q_jt_defconfig`


## 3、sht21使用说明：
  ### 设备树节点：
  ```
  sht21: sht21@40 {
         compatible = "sht21";
         reg = <0x40>;
  }
  ```
  ### 传感器使用：

  ```
  insmod sht21.ko
  echo sht21 0x40 > /sys/bus/i2c/devices/i2c-0/new_device
  ls /sys/class/hwmon/hwmon0
      device           name   subsystem    uevent
      humidity1_input  power  temp1_input
  cat /sys/class/hwmon/hwmon0/temp1_input
      25201       #毫摄氏度，即25.201摄氏度
  cat /sys/class/hwmon/hwmon0/humidity1_input
      58872       #毫百分之1，即58.872%RH
  ```

## 4、ADXL345使用说明
  ### Driver compiled as a module
  I2C Interface:
  ```
  root:~> modprobe evdev
  root:~> modprobe adxl34x
  input: ADXL34x accelerometer as /devices/platform/i2c-bfin-twi.1/i2c-adapter/i2c-1/1-0053/input/input1
  adxl34x 1-0053: ADXL345 accelerometer, irq 140
  ```
  SPI Interface:
  ```
  root:~> modprobe evdev
  root:~> modprobe adxl34x
  input: ADXL34x accelerometer as /devices/platform/bfin-spi.1/spi1.2/input/input1
  adxl34x spi1.2: ADXL345 accelerometer, irq 140
  ```
  ### Driver compiled into the kernel
  Your kernel startup messages should include something like this

  I2C Interface:
  ```
  input: ADXL34x accelerometer as /devices/platform/i2c-bfin-twi.1/i2c-adapter/i2c-1/1-0053/input/input1
  adxl34x 1-0053: ADXL345 accelerometer, irq 140
  ```
  SPI Interface:
  ```
  input: ADXL34x accelerometer as /devices/platform/bfin-spi.1/spi1.2/input/input1
  adxl34x spi1.2: ADXL345 accelerometer, irq 140
  ```
  ### Common Problems
  In case you see a message like this
  ```
  adxl34x spi1.2: Failed to probe ADXL34x accelerometer
  ```
  This means that the SPI communication and initilaization with the ADXL34x failed. check bus_num and chip_select in your platform device file

  ### Checking for proper installation
  After the kernel boot your device folder should include at least one device node for the accelerometer
  ```
  root:/> ls -al /dev/input/
  drw-r--r--    2 root     root            0 Jan  1 00:03 .
  drwxr-xr-x    5 root     root            0 Jan  1 00:03 ..
  crw-rw-r--    1 root     root      13,  64 Jan  1 00:03 event0
  crw-rw-r--    1 root     root      13,  65 Jan  1 00:03 event1
  root:/>
  ```
  Check that the interrupt is registered.
  ```
  root:~> cat /proc/interrupts | grep adxl34x
  140:          0   adxl34x
  ```
  ```
  root:~> cat /sys/class/input/input1/name
  ADXL34x accelerometer
  ```
  ### Use the evtest utility to test proper function
  ```
  root:/> evtest /dev/input/event1
  Input driver version is 1.0.0
  Input device ID: bus 0x18 vendor 0x0 product 0x159 version 0x0
  Input device name: "ADXL34x accelerometer"
  Supported events:
    Event type 0 (Reset)
      Event code 0 (Reset)
      Event code 1 (Key)
      Event code 3 (Absolute)
    Event type 1 (Key)
      Event code 330 (Touch)
    Event type 3 (Absolute)
      Event code 0 (X)
        Value     15
        Min    -4096
        Max     4096
        Fuzz       3
        Flat       3
      Event code 1 (Y)
        Value    -15
        Min    -4096
        Max     4096
        Fuzz       3
        Flat       3
      Event code 2 (Z)
        Value    242
        Min    -4096
        Max     4096
        Fuzz       3
        Flat       3
  Testing ... (interrupt to exit)
  Event: time 107831.548000, type 3 (Absolute), code 0 (X), value -7
  Event: time 107831.548000, type 3 (Absolute), code 1 (Y), value -2
  Event: time 107831.548000, type 3 (Absolute), code 2 (Z), value 12
  Event: time 107831.548000, type 0 (Reset), code 0 (Reset), value 0
  Event: time 107831.588000, type 3 (Absolute), code 0 (X), value -17
  Event: time 107831.588000, type 3 (Absolute), code 1 (Y), value 4
  Event: time 107831.588000, type 0 (Reset), code 0 (Reset), value 0
  Event: time 107831.632000, type 3 (Absolute), code 0 (X), value -16
  Event: time 107831.632000, type 3 (Absolute), code 2 (Z), value 11
  ```


## 5、网络调试imx6q kernel的tftp挂载和文件系统nfs挂载：
  ### 内核挂载:
  ```
  setenv bootcmd 'tftp 12000000 zImage; tftp 18000000 imx6q-sabresd.dtb; bootz 12000000 - 18000000'
  ```

  ### 文件系统挂载:

  ```
  setenv bootargs 'console=ttymxc0,115200 root=/dev/nfs nfsroot=192.168.0.105:/home/magic/Downloads/linux/nfs/rootfs,proto=tcp,nfsvers=3 ip=192.168.0.251:192.168.0.105:192.168.0.1:255.255.255.0::eth0:off'
  ```