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update doc
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‎.vitepress/config.mts‎

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@@ -92,6 +92,7 @@ export default defineConfig({
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{
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text: 'CAN', items: [
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{ text: 'CAN Basic', link: '/examples/can/readme', },
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{ text: 'NXP UDS Bootloader', link: '/examples/nxp_bootloader/readme' },
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], collapsed: true
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},
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{
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],
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collapsed: true
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},
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{
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text: 'CAN', items: [
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{ text: 'NXP UDS Bootloader', link: '/examples/nxp_bootloader/readme' },
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],
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collapsed: true
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},
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{
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text: 'DOIP', items: [
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{ text: 'DoIP Tester', link: '/examples/doip/readme' },

‎resources/examples/nxp_bootloader/readme.md‎

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@@ -34,4 +34,161 @@ This example demonstrates how to use the EcuBus-Pro to upgrade Application firmw
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---
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## Diagnostic Steps
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This example implements firmware upgrade through UDS diagnostic protocol. The main steps are as follows:
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1. Session Control and Communication Control
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- DiagnosticSessionControl (0x10) switch to programming session (0x03)
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- CommunicationControl (0x28) disable normal communication (controlType=0x03)
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- DiagnosticSessionControl (0x10) switch to extended session (0x02)
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2. Security Access
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- SecurityAccess (0x27, subfunction=0x01) request seed
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- SecurityAccess (0x27, subfunction=0x02) send key
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- Key calculation uses AES-128-CBC algorithm, key is [0-15], IV is all zeros
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3. Write Identifier
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- WriteDataByIdentifier (0x2E, DID=0xF15A) write specific identifier
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4. Download Program
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For each firmware file:
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1. RequestDownload (0x34) request download, specify memory address and size
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2. RoutineControl (0x31, routineId=0x0202) verify CRC
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3. TransferData (0x36) transfer data in blocks
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4. RequestTransferExit (0x37) end transfer
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5. Firmware Verification and Reset
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- RoutineControl (0x31, routineId=0xFF00) verify firmware
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- RoutineControl (0x31, routineId=0xFF01) verification complete
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- ECUReset (0x11) reset ECU
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## Firmware Files
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The example includes two firmware files:
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1. S32K344_FlsDrvRTD100.bin
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- Download Address: 0x20000010
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- Driver firmware
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2. S32K344_CAN_App_RTD200.bin
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- Download Address: 0x00440200
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- Application firmware
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## Notes
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1. Ensure firmware files are placed in the project's bin directory
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2. Do not disconnect or power off during download
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3. If download fails, you can retry the entire process
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4. Each firmware file needs CRC verification
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---
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**[Demo Video](https://www.bilibili.com/video/BV1KcmfYNEkQ)**
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## Script Implementation Details
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The bootloader.ts script implements the diagnostic sequence. Here's a detailed explanation of each part:
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### Initialization and Imports
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```typescript
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import crypto from 'crypto'
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import { CRC, DiagRequest, DiagResponse } from 'ECB'
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import path from 'path'
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import fs from 'fs/promises'
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```
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- Imports required modules for cryptography, CRC calculation, and file operations
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- `ECB` provides UDS diagnostic communication utilities
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### Configuration
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```typescript
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const crc = new CRC('self', 16, 0x3d65, 0, 0xffff, true, true)
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let maxChunkSize: number|undefined = undefined
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let content: undefined|Buffer = undefined
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```
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- Configures CRC-16 calculator for firmware verification
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- Variables to store transfer block size and firmware content
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### Firmware Files Configuration
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```typescript
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const fileList = [{
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addr: 0x20000010,
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file: path.join(process.env.PROJECT_ROOT, 'bin', 'S32K344_FlsDrvRTD100.bin')
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}, {
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addr: 0x00440200,
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file: path.join(process.env.PROJECT_ROOT, 'bin', 'S32K344_CAN_App_RTD200.bin')
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}]
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```
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- Defines firmware files to be downloaded with their target addresses
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### Initialization Handler
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```typescript
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Util.Init(async () => {
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const req = DiagRequest.from('Tester_1.RoutineControl491')
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req.diagSetParameter('routineControlType', 1)
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await req.changeService()
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const resp = DiagResponse.from('Tester_1.RoutineControl491')
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resp.diagSetParameter('routineControlType', 1)
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await resp.changeService()
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})
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```
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- Modifies RoutineControl491 service to use type 1 (start routine)
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- Updates both request and response parameters
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### Security Access Handler
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```typescript
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Util.On('Tester_1.SecurityAccess390.recv', async (v) => {
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const data = v.diagGetParameterRaw('securitySeed')
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const cipher = crypto.createCipheriv(
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'aes-128-cbc',
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Buffer.from([0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]),
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Buffer.alloc(16, 0)
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)
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let encrypted = cipher.update(data)
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cipher.final()
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const req = DiagRequest.from('Tester_1.SecurityAccess391')
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req.diagSetParameterSize('data', 128)
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req.diagSetParameterRaw('data', encrypted)
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await req.changeService()
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})
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```
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- Handles security access seed-key exchange
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- Uses AES-128-CBC to calculate key from received seed
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- Sends calculated key back to ECU
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### Download Process Handlers
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```typescript
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Util.Register("Tester_1.JobFunction0", async () => {
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// Prepare next firmware file for download
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const item = fileList.shift()
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if(item) {
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// Request download and verify CRC
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// Returns array of requests to be sent
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}
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return []
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})
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Util.Register("Tester_1.JobFunction1", () => {
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// Handle actual data transfer
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// Splits firmware into chunks and sends them
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// Ends with transfer exit request
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// Returns array of requests to be sent
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})
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```
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- JobFunction0: Prepares download by:
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1. Getting next firmware file
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2. Setting up download request with correct address
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3. Calculating and verifying CRC
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- JobFunction1: Handles data transfer by:
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1. Splitting firmware into appropriate chunk sizes
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2. Creating TransferData requests for each chunk
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3. Adding RequestTransferExit at the end
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4. Triggering firmware verification after last file
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The script works in conjunction with the sequence defined in the ECB file, which executes:
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1. Session and communication control services
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2. Security access sequence
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3. JobFunction0 to prepare download
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4. JobFunction1 to transfer data
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5. Final verification and reset

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