# Bouffalo Labs ISP tool & library

Open source tool and library for flashing Bouffalo RISC-V MCUs.

**NOTE:** Library API and `blisp` tool cli arguments are not stable yet.

# Supported MCUs

- [x] `bl60x` - BL602 / BL604
- [x] `bl70x` - BL702 / BL704 / BL706
- [ ] `bl606p` - BL606P
- [ ] `bl61x` - BL616 / BL618
- [ ] `bl808` - BL808

# Supported Devices
- [X] [Pinecil V2](https://wiki.pine64.org/wiki/Pinecil)

# Supported OS
- [x] Windows
- [x] Linux
- [ ] Apple (WIP: work-in-progress)

# Building

## Clone repository

If you have not cloned this repository locally; clone the git repository locally by running

```bash
git clone --recursive https://github.com/pine64/blisp.git
cd blisp
```

## Build the library and command line utility

For building `blisp` command line tool, use following commands:

```bash
mkdir build && cd build
cmake -DBLISP_BUILD_CLI=ON ..
cmake --build .
```

# Usage

For BL70X, BL61X, BL808 and BL606P, connected via USB, you can use following command, which will auto-detect serial port:

```bash
blisp write --chip bl70x --reset name_of_firmware.bin
```

For BL60X, you need to specify also the serial port path:

```bash
blisp --chip bl60x --reset -p /dev/ttyUSB0 name_of_firmware.bin
```

# Update Pinecil V2
1. Windows or Linux: use the easy pre-made blisp executable. 
2. Instructions on [Pinecil Wiki firmware](https://wiki.pine64.org/wiki/Pinecil#Update_Pinecil_V2)
3. For Troubleshooting the pre-made Blisp, [see down below](https://github.com/pine64/blisp#troubleshooting) or [Pinecil Wiki](https://wiki.pine64.org/wiki/Pinecil#Troubleshooting_V2_Flashing)
4. If you prefer to build the Blisp Flasher from Code, or have an ARM archietecture (i.e., Pinebook Pro laptop), see below.


# Build BLISP Flasher from code for BL70x

_Note: This has been tested on x86-64. The build process also works on aarch64 and armv7, and Pinebook Pro ARM._

## Linux Steps

1. **Linux set-up**
```
git clone --recursive https://github.com/pine64/blisp.git
cd blisp
mkdir build && cd build
cmake -DBLISP_BUILD_CLI=ON ..
cmake --build .
mkdir tools/blisp/data
mkdir -p tools/blisp/data/bl70x
```
  Note: the blisp command will now be in `build/tools/blisp/` folder and could later be run with flags as ` ./tools/blisp/blisp` unless you cd into that folder.

2. Get the Bouffalo `eflash_loader_32m.bin`

   a. Download [Bouffalo Lab Dev Cube here](https://dev.bouffalolab.com/download).
   
   b. Extract the DevCube download and get the `eflash_loader_32m.bin` needed for the bl70x chip (the MCU in Pinecil V2). 
   
   Check this path for the file:
   ``` /BouffaloLabDevCube-v1.8.1/chips/bl702/eflash_loader/eflash_loader_32m.bin ```
   
   c. cp or mv the `eflash_loader_32m.bin` to your `build/tools/data/bl70x` folder from step 1. The rest of the Dev Cube could be deleted.
    
    `/build/tools/blisp/data/bl70x/eflash_loader_32m.bin`
   
### Continue with the next steps if building code to update Pinecil V2.

⛔ Do not use the Pinecil DC barrel jack while updating firmware or it may destroy your PC and pinecil. ⛔

3. **Get V2 firmware** from Github Ralim's IronOS
   
   a. Download the newest stable [firmware release here](https://github.com/Ralim/IronOS/releases) (or a beta firmware). Hint: go to Assets section below the comments and get the Pinecilv2.zip file.
   
   b. If it's in Zip form, then extract **Pinecilv2.zip** and select a language file (English = `Pinecilv2_EN.bin`).
   
   c. Move the `Pinecilv2_EN.bin` (or selected language) into the same folder as the blisp command.
   
   `build/tools/blisp/Pinecilv2_EN.bin`
   
   d. Could delete the rest of Pinecilv2.zip, it is not needed.

4. Connect Pinecil to PC/laptop: long hold `[-]`, then connect cable. Can release the `[-]` after about 15-20second.
   
   a. V2 screen should be Empty/black,  if not, then repeat connection, or find another cable/port. 

   b. Pinecil connects as a serial port (Linux = /dev/ttyACM_x_, Windows = COM_x_).
  
   c. use `dmesg -w` if you would like to watch the connection, Pinecil BL706 will connect as Manufacturer: BLIOT, ttyACM device.

5. If this fails, see [troubleshooting below](https://github.com/pine64/blisp#troubleshooting).

6. If you are in  the folder  `blisp/build/tools/blisp/`   then execute
```
   sudo ./blisp write -c bl70x --reset Pinecilv2_EN.bin
```

Note: if a different language is selected, replace `Pinecilv2_EN.bin` above with the chosen file name.

7. Almost done: unplug from the PC and restart V2. Hold down the minus `[-]` button to see the new version number.

8. Before making menu changes, it is recommended to first [Restore Settings to Default](https://github.com/Ralim/IronOS/blob/dev/Documentation/GettingStarted.md#settings-menu).
   Simply go to Advanced settings > Restore default settings, confirm using the `[+]` button. This sets all menu items to defaults, keeps the same firmware version, and does not affect any Boot-up logo art if applicable. Setting  defaults first avoids unexpected behavior due to some changes in upgrades.
   
9. Congradulations, and [Stay Fluxey, my friends!](https://www.reddit.com/r/PINE64official/comments/xk9vxu/most_interesting_man_in_the_world_i_dont_always/?utm_source=share&utm_medium=web2x&context=3)

## Troubleshooting
1. If the Pinecil V2 fails to connect to the PC, check the `dmesg` command output.

    a. try different cable: usb-C to C is recommended over Usb-A, especially if you are having issues.
    
    b. don't use a USB hub, directly connect to the USB port on the PC or laptop.
    
    c. try different Usb ports (usb-c recommended). Sometimes the rear ports on a PC are better because they are directly connected to the motherboard.
    
    d. try a different PC/laptop
    
2. It is important to hold down the `[-]` minus button _before_ plugging in the Usb-c cable, and do not release the button for another 15-20 seconds. Try to hold it a little longer before releasing if your computer is slow and it is not working. In rare circumstances on fussy USB ports, keep holding the `[-]` for the entire update.

3. If all of this fails, then join one of the [Live Community Chat channels linked](https://wiki.pine64.org/wiki/Pinecil#Community_links) in the Pinecil Wiki as volunteers there might be able to help.

4. Open a an new issue ticket in this Github/Blisp flasher at https://github.com/pine64/blisp/issues

5. See [Pinecil Wiki](https://wiki.pine64.org/wiki/Pinecil) for hardware information.

6. See [Github Ralim's IronOS](https://ralim.github.io/IronOS/#getting-started) for firmware/software information. This is only the Flasher that loads the firmware; all Pinecil firmware documents and menu instructions are in IronOS.


# To Do

- [ ] Another code style
- [ ] Finalize API
- [ ] SDIO and JTAG support
- [ ] Add Apple support