Hi, I am developing a communication between ARM cortex based controller which does some controlling and reading of data and sends it on the modbus protocol with port rs485 and ttl. I am new to in embedded systems and c language and with no support, so please anybody provide me source code for modbus rtu master application on which I can display data accordingly with some modification its urgent.Also kindly suggest me the shortest path to develop such application. Suggestion are welcome.
I am new to in embedded systems and c language and with no support,
Then you're on an impossible mission. There's no way you're going to complete that job with neither skill of your own, nor on-site support. You're in way over your head.
>>I am new to in embedded systems and c language and with no support
You seem to have hit a trifecta, pray tell how you are in such a predicament?
>>I am developing a communication between ... >>provide me source
I think there is some confusion about what a developer does, and needs to know.
The Cortex-M3 core does not contain any of the peripherals you mention. You'd need to be specific about the chip and board implementation you're talking about, as these will impact how things work, and the low level abstraction to the hardware devices and pins.