# Survey: XCP Protocol

###### tags: `XCP` `Autosar` `SC`

:::info
Note ID: D01A0000
:::

## Note
- XCP (Universal Measurement and Calibration Protocol)
- Master & Slave
- A key functionality of XCP is that it enables read and write access to the memory of the Slave.
- 
- CTO & DTO Mode

- XCP commands (7 groups)
- DTO Related: DAQ, STIM
- STIM: Master to Slave
- DAQ : Slave to Master
- CTO Related: CMD, RES, ERR, EV, SERV
- CMD: the commands from Master to Slave
- RES: the responses from slave to master
- ERR: the errors from slave to master
- EV: the events from slave to master
- SERV: the requests about service from slave to master
- XCP a2l document
- Including some information about XCP processing, e.g. ECU data.

## XCP Message


## XCP Message Flow in Autosar

- CAN Driver -> CAN Interface -> XCP Module -> RTE -> SWM7
- CAN Interface -> XCP Module
- 
> CanIf_Cfg.h
- RTE -> SWM7
- 
> Define extern parametr in CtAp_SWM7_CANHandler_EDSF.h
- 

Reference:
- [AUTOSAR中的CAN信息是如何转换的](https://zhuanlan.zhihu.com/p/33040632)

## Issue List
- [Issue : PC tool can't read value from memory through XCP](/XWWmxl7qRZy5vRMp_K5k-g)

## Reference
- [工控学习，搞工控的到底什么是上位机，什么是下位机？](https://zhuanlan.zhihu.com/p/60860072)
- [基于XCP协议分析和理解](https://blog.csdn.net/AgingMoon/article/details/78207245)
- [xcp标定协议与接口](https://blog.csdn.net/qq_25920091/article/details/106422071#XCP_1)
- [Adaptive AUTOSAR中的标定和测量方案-XCP](https://zhuanlan.zhihu.com/p/366979342)
- [Autosar Specification: XCP](/OpUoQQdHT_i5zWmFQFWIgw)
- [Vector XCP Reference Book](https://cdn.vector.com/cms/content/application-areas/ecu-calibration/xcp/XCP_ReferenceBook_V3.0_EN.pdf)
- [ASAM XCP Wiki](https://www.asam.net/standards/detail/mcd-1-xcp/wiki/)
- [5分钟看懂XCP协议](https://zhuanlan.zhihu.com/p/148276769)