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请问是否有裸机版本的portevent的实现方法? #37

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vefone opened this issue Jan 5, 2019 · 6 comments
Open

请问是否有裸机版本的portevent的实现方法? #37

vefone opened this issue Jan 5, 2019 · 6 comments

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@vefone
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vefone commented Jan 5, 2019

非常感谢,开源这么实用的modbus master代码。

想请问一下,有实现过裸机下的portevent接口吗?我现在基于这个代码,移植了串口和定时器部分,也参考了slave的event实现方法,能够正常读写从机的寄存器。不过有一个问题:如果调用两次eMBMasterReqWriteHoldingRegister连续写两个寄存器,从modbus slave软件上只能接收到第二次写的数据。我怀疑是和event队列的实现有关系。所以想问问您有没有参考。非常感谢!

errorCode = eMBMasterReqWriteHoldingRegister(MB_SLAVE_ADDR, 0, usModbusUserData[0], 0x100);
HAL_Delay(500);
errorCode = eMBMasterReqWriteHoldingRegister(MB_SLAVE_ADDR, 1, usModbusUserData[1], 0x100);

@armink
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armink commented Jan 5, 2019

裸机的 portevent 接口有呀,但没有裸机的 portevent_m 主机事件移植文件,感觉你需要的好像是主机的

@vefone
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vefone commented Jan 5, 2019

是啊,我需要主机的portevent_m接口,有计划吗?

@vefone
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vefone commented Jan 5, 2019

主机的裸机portevent接口应该挺多人需要用到,大体看了一下,实现起来还是有点工作量的

@armink
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armink commented Jan 5, 2019

暂时没有,之前想折腾过,后来放弃了,建议使用 RTOS 作为事件机制的基础

@vefone
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vefone commented Jan 5, 2019

用的mcu只有8KB的RAM,怕跑系统会比较折腾。

@vefone
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vefone commented Jan 5, 2019

下载 rt-thread3.1,发现仓主的代码在里面,components\net\freemodbus

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