# 0049RevB_OpenBLT

**Repository Path**: driver-library-development/0049RevB_OpenBLT

## Basic Information

- **Project Name**: 0049RevB_OpenBLT
- **Description**: No description available
- **Primary Language**: C
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-06-11
- **Last Updated**: 2026-02-10

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

[OpenBLT Bootloader](https://github.com/feaser/openblt) ported for QXS320F280049RevB.

# 1. Flash Memory Layout

`[0x0000_0000, 0x0000_5000)`:  20 KB, DSP系统占用

`[0x0000_5000, 0x0001_5000)`:  64 KB, OpenBLT占用

`[0x0001_5000, 0x0010_0000)`: 940 KB, 应用程序可用

```
+----------------------------------------------+  offset = 0x0000_0000
| 8KB CORE0 bootloader                         |
+----------------------------------------------+  offset = 0x0000_2000
| 8KB CORE1 bootloader                         |
+----------------------------------------------+  offset = 0x0000_4000
| 4KB (DCSM Reserved)                          |
+----------------------------------------------+  offset = 0x0000_5000
| 4B OpenBLT TEXT size                         |
+----------------------------------------------+
| 4B OpenBLT DATA size                         |
+----------------------------------------------+
| 1016B reserved                               |
+----------------------------------------------+  offset = 0x0000_5400
| OpenBLT TEXT                                 |
+----------------------------------------------+
| OpenBLT DATA                                 |
+----------------------------------------------+  offset = 0x0001_5000
| 4B CORE0 TEXT size                           |
+----------------------------------------------+
| 4B CORE0 DATA size                           |
+----------------------------------------------+
| 4B CORE1 TEXT size                           |
+----------------------------------------------+
| 4B CORE1 DATA size                           |
+----------------------------------------------+
| 4B CORE0 TEXT start address                  |
+----------------------------------------------+
| 4B CORE0 DATA start address                  |
+----------------------------------------------+
| 4B CORE1 TEXT start address                  |
+----------------------------------------------+
| 4B CORE1 DATA start address                  |
+----------------------------------------------+
| 480B padding bits                            |
+----------------------------------------------+  offset = 0x0001_5200
| signature_checksum                           |
+----------------------------------------------+
| 508B padding bits                            |
+----------------------------------------------+  offset = 0x0001_5400
| Core0 TEXT                                   |
+----------------------------------------------+
| Core0 DATA                                   |
+----------------------------------------------+
| Core1 TEXT                                   |
+----------------------------------------------+
| Core1 DATA                                   |
+----------------------------------------------+
```

# 2. Boot Flow

<img src="./docs/.images/boot_flow.png" style="width:80%; height:auto;"></img>

# 3. 上位机工具

上位机工具位于 `tools\`目录

- `step3_Host\`
  - `MicroBoot.exe`为上位机向DSP发送Flash镜像的工具
  - Flash镜像格式为[Motorla S-record格式](https://www.systutorials.com/docs/linux/man/5-srec/)
- `step2_bin2srec\`
  - 将QX-IDE编译生成的 `.bin格式的Flash镜像文件`转换为符合需求的 `Motorla S-record格式`

# 4. 远程更新应用程序

- 确保OpenBLT已烧写到DSP，上位机和DSP通过烧写通信接口连接
  - 当前支持的通信接口：RS232、RS485、CAN
  - 工程配置文件（blt_conf.h）中，可以配置选择三种通信中的一种，每一种通信方式的特殊参数也在该文件下修改；
  - 通信方式对应板级的GPIO接口配置，请在blt_cpu.h中修改对应的宏定义文件，需要和对应开发板支持的IO_MUX功能对应；
- 准备应用程序镜像
  - 将QX-IDE生成的 `.bin格式Flash镜像文件`拷贝到 `tools\step2_bin2srec\`目录
  - 配置`app_address.ini`文件中的内容确保与待烧写的应用程序一致
  - Windows终端执行 `.\bin2srec_app.bat <.bin_flash_image>`，生成 `.srec文件`
- 远程更新
  - 上位机Windows PC打开工具 `tools\step3_Host\MicroBoot.exe`
  - 复位DSP 或 给DSP上电
  - 在OpenBLT等待超时时间内在`MicroBoot.exe`界面选择`.srec文件`开启应用程序远程更新