请问有谁在STM32部分上实现SWIM协议吗？

你好
 
 
 有点 - 我正在努力。
 
 不，我无法分享。这是我正在开发的商业开发，因此我无法泄露任何源代码，抱歉。
 但是我可以给你提示如何去做。
 
 SWIM位的时间意味着尝试咬一下它是不切实际的。
 STM32内部的定时器具有PWM模式，可用于生成1/0脉冲。
 我还没有发现使用单个计时器进行写入和读取都是可能的。
 我们的设计使用1个定时器进行写入（将定时器设置为PWM输出）
 和另一个读取计时器（设置计时器为输出比较）
 
 我还必须使SWIM驱动程序在多任务系统（FreeRTOS）中工作，因此实现大量构建在ISR和ISR内的状态机上。



以下为原文





Hi


Sort of - I am working on it.

No, I cannot share it. This is a commercial development I am working on so I cannot give away any of the source code, Sorry.
I can however give you hints on how to go about it.

The timing of the SWIM bits means it is impractical to try and bit bang it.
The timers inside the STM32 have a PWM mode which can be used to generate the 1/0 pulses.
I have not found it possible to use a single timer to do both write and read.
Our design uses 1 timer for write (set timer up as PWM output)
and another timer for read (set timer up for output compare)

I also had to make the SWIM driver work in a multi-tasking system (FreeRTOS) so the implementation is heavily built on the ISR and a state machine within the ISR.

versaloon网站似乎离线了。目前，围绕SWIM的OpenOCD列表有一些努力。加入讨论。
https://sourceforge.net/p/openocd/mailman/openocd-devel/?viewmonth=201701



以下为原文




The versaloon website seems offline. At the moment, there is some effort on the OpenOCD list around SWIM. Join the discussion.
https://sourceforge.net/p/openocd/mailman/openocd-devel/?viewmonth=201701

仅供参考：STlink程序员固件加密已被破坏，因此您可以轻松获取固件。如果您熟悉ASM，您可以快速了解它们是如何实现的。



以下为原文




FYI: the STlink programmers firmware encryption had been broken, so you could easily get the firmwares. If you are familiar with ASM you could quiclky get an overview how they implemented it.