Global Moderators

@jugg
这个5G模组还在设计中。

@jugg
这个是RTL的驱动注册有问题，你可以加LOG信息在rtk的驱动里边跟踪一下，定位到具体哪里报异常。然后再想办法解决。

@jugg
这个要看具体的log信息，是驱动有冲突还是什么问题，你可以使用PCIE的网卡暂时规避这种问题，CM5的机器可以支持多种型号的PCIE+USB网卡。
这个模组目前是针对CM5的笔记本设计的，CM5-EVB暂时用不了。

Module selection

• RM500Q-GL is a 5G NR/LTE-A/UMTS/HSPA+ wireless communication module with receive diversity. It
  provides data connectivity on 5G NR SA and NSA, LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+, HSDPA,
  HSUPA and WCDMA networks with standard PCI Express M.2 interface.

  It supports embedded operating systems such as Windows, Linux and Android, and also provides GNSS
  and voice functionality to meet specific application demands.

• The following table shows the frequency bands and GNSS type of RM500Q-GL module.

  Mode	RM500Q-GL
  5G NR	n1/n2/n3/n5/n7/n8/n12/n20/n25/n28/n38/n40/n41/n48/n66/n71/n77/n78/n79
  LTE-FDD	B1/B2/B3/B4/B5/B7/B8/B9/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B29/B30/B32/B66/B71
  LTE-TDD	B34/B38/B39/B40/B41/B42/B43/B46/B48
  WCDMA	B1/B2/B3/B4/B5/B8/B19
  GNSS	GPS/GLONASS/BeiDou/Galileo

Schematic design

Module Pin Definition

• Module pin layout,It can support PCIE interface or USB3.0 interface. We chose USB3.0 interface design, which is relatively easy to handle for compatibility and driver.

Signal connection

• Schematic encapsulation definition, based on the PIN definition of the module.When connecting USB3.0 or PCIE signals, they should be crossed, with TX connected to processor RX and RX connected to processor TX.

• Select the minimum GPIO method because the Coolpi CM5 laptop completely loses power during sleep, so it does not support module wake-up system. The GPIO connection is as follows:
  

• The following table describes the signal list, which is mainly divided into power supply, USB3.0, SIM card, and control signal.

Power supply

The following figure shows a reference design for +5 V input power source based on an DC-DC
TMI3253SH. The typical output of the power supply is about 3.7 V and the maximum load current is 3A.

Power sequence

The turn-on scenario is illustrated in the following figure.

• tpower-on is time the interval between VCC and RESET_N HIGH level, which is a typically 33 ms. It is
  measured when RESET_N is not pulled down by the host device.
• tturn-on is the time interval between FULL_CARD_POWER_OFF# HIGH level and RFFE_VIO_1V8(an internal LDO output) HIGH level, which is typically 68 ms.
• tbooting is the time interval between RFFE_VIO_1V8 HIGH level and the USIM_VDD power-on.
  

Turn on the Module

It is recommended to use a host GPIO to control FULL_CARD_POWER_OFF#. A simple reference circuit
is illustrated in the following figure.

Turn off the Module

Pulling down the FULL_CARD_POWER_OFF# pin will turn off the module. The turn off
scenario is illustrated in the following figure.

PCB design

...................................Stay tuned!

@jugg
如果是TI的库仑计，而且内核有驱动，正常DTS配置一下就可以了。如果是linux内核没有的库仑计型号，就需要自己加驱动，相对麻烦一点。

@jugg
笔记本用的是CW2015的库仑计。这颗会比较麻烦，使用前必须要测试充放电曲线，而且只能厂家帮忙测试。

@jugg
你电池是自带库仑计的吗，如果是这样需要知道库仑计的型号，然后DTS增加驱动即可。单纯升级notebook的系统大概率用不了。一般笔记本电池内置的库仑计TI的型号会比较多。

@ytfycy
是从现有的CM5备份，操作完以后会生成一个img文件，再用etcher升级到其它CM5机器即可。

@ytfycy
保存下面代码为sh脚本，然后放到U盘或者移动硬盘里边执行，执行前先增加一下权限。然后以root权限运行脚本。

!# /bin/sh

IMAGE_NAME="$(date "+%Y%m%d")-rootfs.img"
IMAGE_SIZE=8192
LOOP_NUMBER=$(losetup -f)

echo "01:remove firstrun"
rm /var/lib/misc/firstrun
echo "02:Establishing a mount directory"
mkdir ./mnt
echo "03:dd image file"
dd if=/dev/zero of=./$IMAGE_NAME bs=1M count=$IMAGE_SIZE
echo "04:Mirror Partition"
printf 'n\np\n1\n32768\n1081343\nn\np\n2\n1081344\n16777215\nw\n' | fdisk ./$IMAGE_NAME
echo "05:format partition"
partx -a -v ./$IMAGE_NAME
mkfs.vfat $LOOP_NUMBER"p1"
echo 'yes\n' | mkfs.ext4 $LOOP_NUMBER"p2"
echo "06:copy boot files"
mount $LOOP_NUMBER"p1" ./mnt
cp /boot/firmware/* ./mnt/ -R
umount ./mnt
echo "07:backup rootfs"
rm ./backup.fs
dump -0u -f - /dev/mmcblk0p2 >> ./backup.fs
echo "08:copy rootfs files"
mount $LOOP_NUMBER"p2" ./mnt
cd ./mnt
restore -rf ../backup.fs
umount ./mnt
cd ../
e2fsck -p -f $LOOP_NUMBER"p2"
resize2fs -M $LOOP_NUMBER"p2"
e2label $LOOP_NUMBER"p2" writable
losetup -d $LOOP_NUMBER
echo "09:backimg ok"
fdisk -l ./$IMAGE_NAME

@davidm

1. It is recommended to use a USB 2.0 interface driver as the boot disk.
2. You can also put the system into single user mode and set the ROOT password, which will involve modifying CMDLINE.