problem to send data by TCP with iolib

Question

Hello, I try to use the lib iolibrary with a w5100 chip on a microchip pic32 I succeed to communicate with the chip and I resolve to connect to a tcp server on my computer (in python) But I have a problem. I try to send a byte every 200ms. It seems to work on the begining and after I receive a lot of random data and I have a brutal disconnection. On my python script I have this result Python 3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 22:39:24) on Windows (32 bits). This is the Pyzo interpreter with integrated event loop for ASYNCIO. Type ‘help’ for help, type ‘?’ for a list of magic commands. Running script: “C:\Users\antho\OneDrive\Bureau	cp_server.py” Connection address: (‘192.168.0.15’, 3000) received data: b’U’ received data: b’U’ received data: b’U’ received data: b’U’ received data: b’R\x86S\x00Q\x84N\xd6<\x08\x80\x11*:\x9f\x94A\x0c;\xfa\x11\xc5Aj\x11R\xe2\x8a\x99\xea\xa8a\x04\xf3*\x0cR\xb0\x8b\xa5\x1e\x0c!\x80i\x07P\xe4%’ received data: b’\x0c\x00A\x8f\x00f\x80\xd2\x88\x8a* \x01\x03 \xe4"e(\xb0\x90\x0cQ\xd0\x08\x0e,Q<f\x18\x12d\x98\xe0\x04\xa9\xca\xcbaH@\x02\xd94\x06\x86\xa8m’ received data: b’\xa3#[3\xc8\x8a1PH&\x04Y\x02\xa6	\xd8\xf3 \x14^4\xe2\x18\xf4D\x06c\x16Q\xa5fH\x11n\xcc\xe1H\xd7\xb8\x15\x05\xa0\x98)\xd2\@dS\x13’ received data: b’U\xdc\x02\xa2\x97\x9c\x00\x91X
\xaas\x80\xa0\x80@-Y\x1c\xe2\xa8\x08\x86TQ\xa1\x191\xd5\xc5\x90\x86 \x90L\x11\xb0\xad\x08\xba\x81\x0f\x02\xb0Z9\x04\x93\xa3\x17’ received data: b’\x998$d,\x0e\x016\xd0\xb2\x9c\x88D\x96b#\x0f0\xa8\xd1\x02\x1c\x8a\xed\xce\x1ad\xd0\xc4&\x01\x10\x02?\xb2?\x05q@ \x88X\x17Q\x18\x18\x91\x04\x10\x80’ On my micrhip pic 32 I would like to send ‘U’ → 0x55 I have this code on my Microchip wiz_NetInfo gWIZNETINFO = { .mac = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}, .ip = {192,168,0,15}, .sn = {255, 255, 255, 0}, .gw = {192, 168, 0, 1}, .dns = {168, 126, 63, 1}, .dhcp = NETINFO_STATIC}; wizchip_setnetinfo(&gWIZNETINFO); result = socket(0, Sn_MR_TCP, 1000,0); uint8_t adr_ip[4] = {192,168,0,16}; result = connect(0,adr_ip,1000); uint8_t test_buffer = 0x55; result = send(0, &testBuffer ,1); Sorry for my bad english…

becky · Answer

Please check whether it is correct to actually send random data from W5100 through wireshark. I think there may be a problem with your python script. Or test it with other tcp tools instead of python.