树莓派CM4核心板平替CB1教程
一、产品简介
BIGTREETECH CB1 是针对树莓派CM4缺货问题推出的替代方案,所有输出信号采用2个100PIN微型BTB高速连接座与外面扩展底板方便快速连接(包括百兆以太网、HDMI等)，板载2.4G WIFI。
1.1 产品特点
1. CPU: 全志H616，四核Cortex-A53 @1.5GHz
2. GPU: Mali G31 MP2, 支持OpenGL3.2
3. RAM: 512MB/1GB DDR3L SDRAM
4. 显示:HDMI2.0A接口，支持4K显示器
5. USB2.0 端口
6. 百兆以太网+百兆WIFI
7. 与树莓派CM4完全相同的BTB座子
1.2 产品参数
1. 核心板外观尺寸： 40mm*55mm
2. 核心板安装尺寸： 33mm*48mm
3. 核心板输入电压：5V±5%/2A
4. 核心板输出电压：3.3V±2%/100mA
5. 核心板输出电压：1.8V±2%/100mA
6. 核心板WIFI:2.4G/802.11 b/g/n 无线标准
1.3 尺寸图
二、外设接口
2.1 Pin脚说明
PIN | Connector | Signal | Description |
1 | A connector_01 | GND | |
2 | A connector_02 | GND | |
3 | A connector_03 | NC | |
4 | A connector_04 | EPHY-TXP | Ethernet TX Positive |
5 | A connector_05 | NC | |
6 | A connector_06 | EPHY-TXN | Ethernet TX Negative |
7 | A connector_07 | GND | |
8 | A connector_08 | GND | |
9 | A connector_09 | NC | |
10 | A connector_10 | EPHY-RXP | Ethernet RX Positive |
11 | A connector_11 | NC | |
12 | A connector_12 | EPHY-RXN | Ethernet RX Negative |
13 | A connector_13 | GND | |
14 | A connector_14 | GND | |
15 | A connector_15 | LINK_LED | Ethernet LED |
16 | A connector_16 | NC | |
17 | A connector_17 | SPD_LED | Ethernet LED |
18 | A connector_18 | NC | |
19 | A connector_19 | NC | |
20 | A connector_20 | NC | |
21 | A connector_21 | SYS-LED | System work light |
22 | A connector_22 | GND | |
23 | A connector_23 | GND | |
24 | A connector_24 | PC15 | 3.3V IO(CB1 V2.1 is 1.8v ) |
25 | A connector_25 | PC8 | 3.3V IO(CB1 V2.1 is 1.8v ) |
26 | A connector_26 | PC6 | 3.3V IO(CB1 V2.1 is 1.8v ) |
27 | A connector_27 | PH10 | 3.3V IO |
28 | A connector_28 | NC | |
29 | A connector_29 | NC | |
30 | A connector_30 | PG6 | 3.3V IO |
31 | A connector_31 | PG9 | 3.3V IO |
32 | A connector_32 | GND | |
33 | A connector_33 | GND | |
34 | A connector_34 | NC | |
35 | A connector_35 | PG7 | 3.3V IO |
36 | A connector_36 | NC | |
37 | A connector_37 | PG8 | 3.3V IO |
38 | A connector_38 | PH6 | 3.3V IO |
39 | A connector_39 | NC | 3.3V IO |
40 | A connector_40 | PH8 | 3.3V IO |
41 | A connector_41 | NC | |
42 | A connector_42 | GND | |
43 | A connector_43 | GND | |
44 | A connector_44 | PH7 | 3.3V IO |
45 | A connector_45 | PC9 | 3.3V IO(CB1 V2.1 is 1.8v ) |
46 | A connector_46 | PC10 | 3.3V IO(CB1 V2.1 is 1.8v ) |
47 | A connector_47 | PC11 | 3.3V IO(CB1 V2.1 is 1.8v ) |
48 | A connector_48 | PC12 | 3.3V IO(CB1 V2.1 is 1.8v ) |
49 | A connector_49 | PC13 | 3.3V IO(CB1 V2.1 is 1.8v ) |
50 | A connector_50 | PC14 | 3.3V IO(CB1 V2.1 is 1.8v ) |
51 | A connector_51 | SoC_RX | DEBUG UART |
52 | A connector_52 | GND | |
53 | A connector_53 | GND | |
54 | A connector_54 | PC7 | 3.3V IO(CB1 V2.1 is 1.8v ) |
55 | A connector_55 | SoC_TX | DEBUG UART |
56 | A connector_56 | NC | |
57 | A connector_57 | SDC0-CLK | SDCARD Clock signal |
58 | A connector_58 | NC | |
59 | A connector_59 | GND | |
60 | A connector_60 | GND | |
61 | A connector_61 | SDC0-D3 | SDCARD Data3 signal |
62 | A connector_62 | SDC0-CMD | SDCARD CMD signal |
63 | A connector_63 | SDC0-D0 | SDCARD Data0 signal |
64 | A connector_64 | PG11 | 3.3V IO |
65 | A connector_65 | GND | |
66 | A connector_66 | GND | |
67 | A connector_67 | SDC0-D1 | SDCARD Data1 signal |
68 | A connector_68 | PG12 | 3.3V IO |
69 | A connector_69 | SDC0-D2 | SDCARD Data2 signal |
70 | A connector_70 | PG13 | 3.3V IO |
71 | A connector_71 | GND | |
72 | A connector_72 | PG14 | 3.3V IO |
73 | A connector_73 | PG16 | 3.3V IO |
74 | A connector_74 | GND | |
75 | A connector_75 | NC | |
76 | A connector_76 | SDC0-DET | SDCARD detect |
77 | A connector_77 | VCC_5V | 5V IN /2A |
78 | A connector_78 | NC | |
79 | A connector_79 | VCC_5V | 5V IN /2A |
80 | A connector_80 | NC | |
81 | A connector_81 | VCC_5V | 5V IN /2A |
82 | A connector_82 | NC | |
83 | A connector_83 | VCC_5V | 5V IN /2A |
84 | A connector_84 | 3V3 | 3.3v out /200mA |
85 | A connector_85 | VCC_5V | 5V IN /2A |
86 | A connector_86 | 3V3 | 3.3v out /200mA |
87 | A connector_87 | VCC_5V | 5V IN /2A |
88 | A connector_88 | 1V8 | 1.8v out /100mA |
89 | A connector_89 | NC | |
90 | A connector_90 | 1V8 | 1.8v out /100mA |
91 | A connector_91 | NC | |
92 | A connector_92 | PWRON | Power switch (useless) |
93 | A connector_93 | FEL | (useless) |
94 | A connector_94 | NC | |
95 | A connector_95 | NC | |
96 | A connector_96 | NC | |
97 | A connector_97 | NC | |
98 | A connector_98 | GND | |
99 | A connector_99 | RECOVERY | Program download (useless) |
100 | A connector_100 | AP-RESET | power reset (useless) |
101 | B connector_1 | NC | |
102 | B connector_2 | NC | |
103 | B connector_3 | USB1-DM | HOST USB1 |
104 | B connector_4 | LINEOUTL | |
105 | B connector_5 | USB1-DP | HOST USB1 |
106 | B connector_6 | LINEOUTR | |
107 | B connector_7 | GND | |
108 | B connector_8 | GND | |
109 | B connector_9 | NC | |
110 | B connector_10 | NC | |
111 | B connector_11 | TV_OUT | CVBS OUT |
112 | B connector_12 | NC | |
113 | B connector_13 | GND | |
114 | B connector_14 | GND | |
115 | B connector_15 | NC | |
116 | B connector_16 | NC | |
117 | B connector_17 | NC | |
118 | B connector_18 | NC | |
119 | B connector_19 | GND | |
120 | B connector_20 | GND | |
121 | B connector_21 | NC | |
122 | B connector_22 | NC | |
123 | B connector_23 | NC | |
124 | B connector_24 | NC | |
125 | B connector_25 | GND | |
126 | B connector_26 | GND | |
127 | B connector_27 | NC | |
128 | B connector_28 | USB3-DM | HOST USB3 |
129 | B connector_29 | NC | |
130 | B connector_30 | USB3-DP | HOST USB3 |
131 | B connector_31 | GND | |
132 | B connector_32 | GND | |
133 | B connector_33 | NC | |
134 | B connector_34 | USB2-DM | HOST USB2 |
135 | B connector_35 | NC | |
136 | B connector_36 | USB2-DP | HOST USB2 |
137 | B connector_37 | GND | |
138 | B connector_38 | GND | |
139 | B connector_39 | NC | |
140 | B connector_40 | USB0-DM | OTG USB |
141 | B connector_41 | NC | |
142 | B connector_42 | USB0-DP | OTG USB |
143 | B connector_43 | NC | |
144 | B connector_44 | GND | |
145 | B connector_45 | NC | |
146 | B connector_46 | NC | |
147 | B connector_47 | NC | |
148 | B connector_48 | NC | |
149 | B connector_49 | NC | |
150 | B connector_50 | GND | |
151 | B connector_51 | HCEC | HDMI CEC |
152 | B connector_52 | NC | |
153 | B connector_53 | HHPD | HDMI Hotplug |
154 | B connector_54 | NC | |
155 | B connector_55 | GND | |
156 | B connector_56 | GND | |
157 | B connector_57 | NC | |
158 | B connector_58 | NC | |
159 | B connector_59 | NC | |
160 | B connector_60 | NC | |
161 | B connector_61 | GND | |
162 | B connector_62 | GND | |
163 | B connector_63 | NC | |
164 | B connector_64 | NC | |
165 | B connector_65 | NC | |
166 | B connector_66 | NC | |
167 | B connector_67 | GND | |
168 | B connector_68 | GND | |
169 | B connector_69 | NC | |
170 | B connector_70 | HTX2P | HDMI TX2 Positive. |
171 | B connector_71 | NC | |
172 | B connector_72 | HTX2N | HDMI TX2 Negative. |
173 | B connector_73 | GND | |
174 | B connector_74 | GND | |
175 | B connector_75 | NC | |
176 | B connector_76 | HTX1P | HDMI TX1 Positive. |
177 | B connector_77 | NC | |
178 | B connector_78 | HTX1N | HDMI TX1 Negative. |
179 | B connector_79 | GND | |
180 | B connector_80 | GND | |
181 | B connector_81 | NC | |
182 | B connector_82 | HTX0P | HDMI TX0 Positive. |
183 | B connector_83 | NC | |
184 | B connector_84 | HTX0N | HDMI TX0 Negative. |
185 | B connector_85 | GND | |
186 | B connector_86 | GND | |
187 | B connector_87 | NC | |
188 | B connector_88 | HTXCP | HDMI CLK Positive. |
189 | B connector_89 | NC | |
190 | B connector_90 | HTXCN | HDMI CLK Negative. |
191 | B connector_91 | GND | |
192 | B connector_92 | GND | |
193 | B connector_93 | NC | |
194 | B connector_94 | NC | |
195 | B connector_95 | NC | |
196 | B connector_96 | NC | |
197 | B connector_97 | GND | |
198 | B connector_98 | GND | |
199 | B connector_99 | HSDA | HDMI I2C |
200 | B connector_100 | HSCL | HDMI I2C |
三、接口介绍
3.1 BTB座子安装核心板
3.2 40 pin GPIO
Manta系列主板搭配CB1使用时，40 Pin GPIO为自定义的IO顺序，如下图所示，Pin 7引脚是CB1的"PC7"，Pin 11引脚是CB1的"PC14"，CB1的gpio编号对应关系为(Px–PA)*32 + Pin
例如
PC7 = (PC–PA)*32 + 7 = 2 * 32 + 7 = 71
PH10 = (PH–PA)*32 + 10 = 7 * 32 + 10 = 234
PC7在Klipper中的编号为pin: host: gpio71，PH10为pin: host: gpio234
注意：V2.1版本的PC口（PC6，PC7，PC8，PC9，PC10，PC11，PC12，PC13，PC14，PC15）逻辑电压为1.8V；
V2.2版本的PC口（PC6，PC7，PC8，PC9，PC10，PC11，PC12，PC13，PC14，PC15）逻辑电压为3.3V。
四、烧录系统
4.1 下载系统镜像
只能下载安装我们提供的系统镜像：https://github.com/bigtreetech/CB1/releases
4.2 下载并安装烧录软件
下载并安装烧录软件
树莓派官方的Raspberry Pi Imager：https://www.raspberrypi.com/software/
balenaEtcher：https://www.balena.io/etcher/
以上两种软件都可以使用，任选一种下载安装即可。
4.3 烧录系统
4.3.1 使用Raspberry Pi Imager
1. 将Micro SD卡通过读卡器插入到电脑。
2. 选择系统
3. 选择“用户自定义”，然后选择下载到电脑中的镜像
4. 选择待烧录的Micro SD卡（烧录镜像会将Micro SD卡格式化，千万注意不要选错盘符，否则会将其他存储上的数据格式化），点击“烧录”
5. 等待烧录完成
4.3.2 使用balenaEtcher
1. 将Micro SD卡通过读卡器插入到电脑。
2. 选择下载到电脑中的镜像
3. 选择待烧录的Micro SD卡（烧录镜像会将Micro SD卡格式化，千万注意不要选错盘符，否则会将其他存储上的数据格式化），点击“烧录”
4. 等待烧录完成
五、配置网络
5.1 使用网线
网线即插即用，不需要额外的设置
5.2 设置WIFI
系统镜像烧录完成后，Micro SD卡会有一个被电脑识别的FAT32分区，此分区下有个名为"system.cfg" 的配置文件
用记事本打开，将WIFI-SSID替换为实际的WIFI名称，PASSWORD替换为实际的密码
六、配置主板
6.1 ssh软件连接设备
1. 安装ssh软件Mobaxterm：https://mobaxterm.mobatek.net/download-home-edition.html
2. 将MicroSD卡插到主板上，通电后等待系统启动，大概1~2分钟
3. 设备连上WIFI或者插上网线后，会被自动分配一个IP
4. 进入路由器管理界面找到设备的IP
5. 打开已经安装的Mobaxterm软件，点击“Session”，在弹出的窗口中点击“SSH”，在Remote host一栏中输入设备的IP地址，点击“OK”（注意：电脑和设备必须要在同一个局域网下）
6. 输入登录名和登录密码进入SSH终端界面
登录名login as：biqu
密码：biqu
6.2 编译MCU固件
1. ssh连接到设备后，在命令行输入：
cd ~/klipper/
make menuconfig
使用对应的主板配置编译固件，此处以Manta M4P 为例
* [*] Enable extra low-level configuration options
* Micro-controller Architecture (STMicroelectronics STM32) --->
* Processor model (STM32G0B1) --->
* Bootloader offset (8KiB bootloader) --->
* Clock Reference (8 MHz crystal) --->
* Communication interface (USB (on PA11/PA12)) --->
2. 配置选择完成后, 输入 `q` 退出配置界面，当询问是否保存配置是选择 "Yes"
3. 输入make编译固件，当make执行完成后会在设备的home/pi/klipper/out文件夹中生成我们所需要的`klipper.bin`固件，在ssh软件左侧可以直接下载到电脑中
七、注意事项
1. 除了HDMI、USB、网口之外的所有的拔插操作请在断电的情况下进行
2. 注意CB1的散热问题。如果运行的应用消耗的系统资源过多，发热会比较严重
如果您还需要此产品的其他资源，可以到https://github.com/bigtreetech/ 上自行查找，如果无法找到您所需的资源，可以联系我们的售后支持。
若您使用中还遇到别的问题，欢迎您联系我们，我们定会细心为您解答；若您对我们的产品有什么好的意见或建议，也欢迎您回馈给我们，我们也会仔细斟酌您的意见或建议，感谢您选择BIGTREETECH制品，谢谢！
