WizFi360-EVB-Pico + Arduino "WiFiClient::read" gives AT command instead of received data...

Question

Dear Sir or Madam, I’m very new to WizFi system, so let me apologise if I’m asking a stupid question… I’ve just started using WizFi360-EVB-Pico to get data from a sensor (which sends about 40 bytes of measurement data via WiFi/TCP every 5 seconds) in SoftAP mode, based on WebServerAP example. For the first packet after reset, it works. Though, from second packet, WiFiClient::read gives AT command, not received data, like: +IPD,0,40,192.168.80.88,55018:0, 0, 7 Also, WiFiClient::available does not seem to support more than 2 packets. it gives 0 (before 1st packet’s arrival) 40 (1st packet) 40 40 (even after 2nd packet) 40 (3rd packet, …) Is it the expected behavior? How can I get the ‘real’ Rx data… What I’m doing is as follows: while (client.connected()) { // loop while the client's connected int bytes_avail = client.available(); Serial.print(bytes_avail); Serial.print(" "); if (bytes_avail > 0) { buf = (uint8_t *) malloc(bytes_avail); client.read(buf, bytes_avail); for (int i=0; i<bytes_avail; i++) { Serial.print((char)buf[i]); } Serial.println(""); free(buf); } delay(1000); } My WizFi360-EVB-Pico is running firmware 1.1.1.7. I also thought of updating to 1.1.1.9, though, with only USB cable, I could not find any way to do that. Tera term Esc key while reset does not turn the device into boot mode WizFi upgrade tool give “not connected” error after pressing reset button I also appreciate if anyone lets me know how to update in this situation. Best regards,

austin · Answer

Hello @nakazoo I’ll check the issues you mentioned. The F/W update of the WizFi360 built in the WizFi360-EVB-Pico can be done through J4(UART0). https://docs.wiznet.io/assets/images/WizFi360-EVB-Pico_SCH_V100-1-44628336cfa4d71657c04fbf4bf9b8c4.png image812×552 61.7 KB https://docs.wiznet.io/assets/images/WizFi360-EVB-Pico_Pinout_220405-97312e88e09911a428ae152a94ab940b.png image1794×1419 228 KB

nakazoo · Answer

Dear austin-nim, Thank you for your firmware update instruction. Luckily I found a USB-UART cable in my home and successfully updated to 1.1.1.9. But I still get +IPD… from read function. Thank you very much in advance!