- This is a release SDK repository for the [SOPHGO](https://www.sophgo.com/)`cv181x` and `cv180x` series of Edge chips.
- Milk-V Duo is an ultra-compact embedded development platform based on the CV1800B chip. It can run Linux and RTOS, providing a reliable, low-cost, and high-performance platform for professionals, industrial ODMs, AIoT enthusiasts, DIY hobbyists, and creators.
- Unpack the toolchain and link to the SDK directory
```
tar xvf host-tools.tar.gz
cd cvi_mmf_sdk/
ln -s ../host-tools ./
```
## compile
<br>
- Take `cv1812h_wevb_0007a_emmc` as an example
```
cd cvi_mmf_sdk/
source build/cvisetup.sh
defconfig cv1812h_wevb_0007a_emmc
build_all
```
- After the compilation is successful, you can see the generated image in the `install` directory
## SD card burning
- Connect the serial cable of the EVB board
- Format the SD card into FAT32 format
- Put the image in the `install` directory into the root directory of the SD card
```
.
├── boot.emmc
├── cfg.emmc
├── fip.bin
├── fw_payload_uboot.bin
├── rootfs.emmc
└── system.emmc
```
- Insert the SD card into the SD card slot
- Power on the platform again, and it will automatically enter the burning process when it is turned on. The burning process log is as follows:
```
Hit any key to stop autoboot: 0
## Resetting to default environment
Start SD downloading...
mmc1 : finished tuning, code:60
465408 bytes read in 11 ms (40.3 MiB/s)
mmc0 : finished tuning, code:27
switch to partitions #1, OK
mmc0(part 1) is current device
MMC write: dev # 0, block # 0, count 2048 ... 2048 blocks written: OK in 17 ms (58.8 MiB/s)
MMC write: dev # 0, block # 2048, count 2048 ... 2048 blocks written: OK in 14 ms (71.4 MiB/s)
Program fip.bin done
mmc0 : finished tuning, code:74
switch to partitions #0, OK
mmc0(part 0) is current device
64 bytes read in 3 ms (20.5 KiB/s)
Header Version:1
2755700 bytes read in 40 ms (65.7 MiB/s)
MMC write: dev # 0, block # 0, count 5383 ... 5383 blocks written: OK in 64 ms (41.1 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
13224 bytes read in 4 ms (3.2 MiB/s)
MMC write: dev # 0, block # 5760, count 26 ... 26 blocks written: OK in 2 ms (6.3 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
11059264 bytes read in 137 ms (77 MiB/s)
MMC write: dev # 0, block # 17664, count 21600 ... 21600 blocks written: OK in 253 ms (41.7 MiB/s)
64 bytes read in 3 ms (20.5 KiB/s)
Header Version:1
4919360 bytes read in 65 ms (72.2 MiB/s)
MMC write: dev # 0, block # 158976, count 9608 ... 9608 blocks written: OK in 110 ms (42.6 MiB/s)
64 bytes read in 4 ms (15.6 KiB/s)
Header Version:1
10203200 bytes read in 128 ms (76 MiB/s)
MMC write: dev # 0, block # 240896, count 19928 ... 19928 blocks written: OK in 228 ms (42.7 MiB/s)
Saving Environment to MMC... Writing to MMC(0)... OK
mars_c906#
```
- Burning is successful, unplug the SD card, power on the board again, and enter the system.
<br><br>
# About SOPHGO
** SOPHGO is committed to becoming the world's leading general computing power provider.<br>
SOPHGO focuses on the development and promotion of AI, RISC-V CPU and other computing products. With the self-developed chips as the core, SOPHGO has created a matrix of computing power products, which covers the whole scene of "cloud, edge and terminal" and provides computing power products and overall solutions for urban brains, intelligent computing centers, intelligent security, intelligent transportation, safety production, industrial quality inspection, intelligent terminals and others.SOPHGO has set up R&D centers in more than 10 cities and countries, including Beijing, Shanghai, Shenzhen, Qingdao, Xiamen, the United States and Singapore. **
- Milk-V Duo is an ultra-compact embedded development platform based on the CV1800B chip. It can run Linux and RTOS, providing a reliable, low-cost, and high-performance platform for professionals, industrial ODMs, AIoT enthusiasts, DIY hobbyists, and creators.
