Write some Software

Hello, I am experienced C programmer, and I was working with various protocols - both binary and text. I can create either TCP/UNIX sockets server and/or command line interface to control your heatmisers. Question to you whether on your rs485 network are only heatmisers + master, or other devices as well (like using modbus protocol) - I wonder cause this heatmiser protocol looks quite unique, and I am not sure if discovery/communication problem will not create troubles for other devices. With regards, Jakub Zawadzki

Hi, client. Please let me do it. I can do it successfully as soon as you want time and as exact as you want. I have long experiences about C structured programming with 10+ years. Best Regards. Du Pingping.

hi... i can do this. Please let me know to start immediately. i can deliver you on time. Please initiate communication to discuss further. thanks

A proposal has not yet been provided

I have experiance with RS485 on low level. Write few programs for microcontrollers (Modbus protocol throught RS485). As I understand you need program on PC that allow you controll all networkd devices? So it can be written in high level language?

A proposal has not yet been provided

Hi, I got lots of experience implementing custom binary protocols over TCP and UDP. I am also immediately available.

Dear sir/madam, I'm an electronics engineer with more that 10 years of professional experience. I've developed over 20 electronic devices which are currently sold in more than 100 countries and, of course, I've developed some projects similar to the yours, so I consider I can help you. What I propose you to do: 1 - Incorporate an embedded RTOS, such as FreeRTOS, into your device, so your communication could be managed better, and your final poduct will be more reliable. 2 - Integrate a well known and reliable TCP/IP which could offer you standard BSD sockets, like Cyclone TCP. 3 - Create 2 tasks: 3.1 - RS-485 task which will be continuously polling the devices, and updating their status in RAM memory. 3.2 - TCP server task, which will enable you to read that information stored on RAM, as well as to send information to the devices. 3.3 - Create a mechanism, like a queue for sending the received TCP requests to the 485 connected devices. Finally, it is important to say, that I know it is not easy to trust someone you meet on internet, that is why I will send you the code pre-built in libraries, you will be able to test it, and once you verify that it is working as expected, you will pay me and I send you the sources. So you will never pay if you are not 100% satisfied with my work. Moreover, I'm not a nick name, I always sign my projects with my name and surname, as a well reputated engineer. Sincerely, Javier Longares