I'm trying to get an espidf-http-request example working but it always fails with DNS lookup failed err=202. Its actually a [url]platformio example[https://github.com/platformio/platform- ... tp-request] but otherwise looks like a fairly simple IDF example. I've tried with two different Wifi access points and two different ESP32 modules, one an Adafruit QTPY C3 and the other an M5Stack Core2, always the same DNS error.
Any hints on what the problem could be?
Here is the full UART log:
Code: Select all
* Executing task: C:\Users\tornt\.platformio\penv\Scripts\platformio.exe device monitor
--- Terminal on COM8 | 115200 8-N-1
--- Available filters and text transformations: colorize, debug, default, direct, esp32_exception_decoder, hexlify, log2file, nocontrol, printable, send_on_enter, time
--- More details at https://bit.ly/pio-monitor-filters
--- Quit: Ctrl+C | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H
␛[0;32mI (13) boot: ESP-IDF 5.0.1 2nd stage bootloader␛[0m
␛[0;32mI (13) boot: compile time 11:33:47␛[0m
␛[0;32mI (14) boot: chip revision: v3.0␛[0m
␛[0;32mI (15) boot.esp32: SPI Speed : 40MHz␛[0m
␛[0;32mI (20) boot.esp32: SPI Mode : DIO␛[0m
␛[0;32mI (25) boot.esp32: SPI Flash Size : 4MB␛[0m
␛[0;32mI (29) boot: Enabling RNG early entropy source...␛[0m
␛[0;32mI (35) boot: Partition Table:␛[0m
␛[0;32mI (38) boot: ## Label Usage Type ST Offset Length␛[0m
␛[0;32mI (45) boot: 0 nvs WiFi data 01 02 00009000 00006000␛[0m
␛[0;32mI (53) boot: 1 phy_init RF data 01 01 0000f000 00001000␛[0m
␛[0;32mI (60) boot: 2 factory factory app 00 00 00010000 00100000␛[0m
␛[0;32mI (68) boot: End of partition table␛[0m
␛[0;32mI (72) esp_image: segment 0: paddr=00010020 vaddr=3f400020 size=1eae8h (125672) map␛[0m
␛[0;32mI (126) esp_image: segment 1: paddr=0002eb10 vaddr=3ffb0000 size=01508h ( 5384) load␛[0m
␛[0;32mI (128) esp_image: segment 2: paddr=00030020 vaddr=400d0020 size=7d72ch (513836) map␛[0m
␛[0;32mI (317) esp_image: segment 3: paddr=000ad754 vaddr=3ffb1508 size=01e5ch ( 7772) load␛[0m
␛[0;32mI (321) esp_image: segment 4: paddr=000af5b8 vaddr=40080000 size=14c20h ( 85024) load␛[0m
␛[0;32mI (368) boot: Loaded app from partition at offset 0x10000␛[0m
␛[0;32mI (368) boot: Disabling RNG early entropy source...␛[0m
␛[0;32mI (380) cpu_start: Pro cpu up.␛[0m
␛[0;32mI (380) cpu_start: Starting app cpu, entry point is 0x40081240␛[0m
␛[0;32mI (0) cpu_start: App cpu up.␛[0m
␛[0;32mI (396) cpu_start: Pro cpu start user code␛[0m
␛[0;32mI (397) cpu_start: cpu freq: 160000000 Hz␛[0m
␛[0;32mI (397) cpu_start: Application information:␛[0m
␛[0;32mI (401) cpu_start: Project name: http-request␛[0m
␛[0;32mI (407) cpu_start: App version: v6.0.1-11-g48c4226-dirty␛[0m
␛[0;32mI (413) cpu_start: Compile time: Mar 4 2023 11:33:21␛[0m
␛[0;32mI (419) cpu_start: ELF file SHA256: c95408b22e6b86a7...␛[0m
␛[0;32mI (425) cpu_start: ESP-IDF: 5.0.1␛[0m
␛[0;32mI (430) cpu_start: Min chip rev: v0.0␛[0m
␛[0;32mI (435) cpu_start: Max chip rev: v3.99 ␛[0m
␛[0;32mI (439) cpu_start: Chip rev: v3.0␛[0m
␛[0;32mI (444) heap_init: Initializing. RAM available for dynamic allocation:␛[0m
␛[0;32mI (452) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM␛[0m
␛[0;32mI (457) heap_init: At 3FFB7488 len 00028B78 (162 KiB): DRAM␛[0m
␛[0;32mI (464) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM␛[0m
␛[0;32mI (470) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM␛[0m
␛[0;32mI (477) heap_init: At 40094C20 len 0000B3E0 (44 KiB): IRAM␛[0m
␛[0;32mI (484) spi_flash: detected chip: generic␛[0m
␛[0;32mI (487) spi_flash: flash io: dio␛[0m
␛[0;33mW (491) spi_flash: Detected size(16384k) larger than the size in the binary image header(4096k). Using the size in the binary image header.␛[0m
␛[0;32mI (506) cpu_start: Starting scheduler on PRO CPU.␛[0m
␛[0;32mI (0) cpu_start: Starting scheduler on APP CPU.␛[0m
␛[0;32mI (554) example_connect: Start example_connect.␛[0m
I (564) wifi:wifi driver task: 3ffbefd8, prio:23, stack:6656, core=0
␛[0;32mI (564) system_api: Base MAC address is not set␛[0m
␛[0;32mI (564) system_api: read default base MAC address from EFUSE␛[0m
I (574) wifi:wifi firmware version: 17afb16
I (574) wifi:wifi certification version: v7.0
I (574) wifi:config NVS flash: enabled
I (574) wifi:config nano formating: disabled
I (584) wifi:Init data frame dynamic rx buffer num: 32
I (584) wifi:Init management frame dynamic rx buffer num: 32
I (594) wifi:Init management short buffer num: 32
I (594) wifi:Init dynamic tx buffer num: 32
I (604) wifi:Init static rx buffer size: 1600
I (604) wifi:Init static rx buffer num: 10
I (604) wifi:Init dynamic rx buffer num: 32
␛[0;32mI (614) wifi_init: rx ba win: 6␛[0m
␛[0;32mI (614) wifi_init: tcpip mbox: 32␛[0m
␛[0;32mI (624) wifi_init: udp mbox: 6␛[0m
␛[0;32mI (624) wifi_init: tcp mbox: 6␛[0m
␛[0;32mI (624) wifi_init: tcp tx win: 5744␛[0m
␛[0;32mI (634) wifi_init: tcp rx win: 5744␛[0m
␛[0;32mI (634) wifi_init: tcp mss: 1440␛[0m
␛[0;32mI (644) wifi_init: WiFi IRAM OP enabled␛[0m
␛[0;32mI (644) wifi_init: WiFi RX IRAM OP enabled␛[0m
␛[0;32mI (654) phy_init: phy_version 4670,719f9f6,Feb 18 2021,17:07:07␛[0m
I (764) wifi:mode : sta (24:0a:c4:f8:7e:ec)
I (764) wifi:enable tsf
␛[0;32mI (764) example_connect: Connecting to BT-P2CKZW...␛[0m
␛[0;32mI (764) example_connect: Waiting for IP(s)␛[0m
I (3174) wifi:new:<11,0>, old:<1,0>, ap:<255,255>, sta:<11,0>, prof:1
I (3864) wifi:state: init -> auth (b0)
I (3864) wifi:state: auth -> assoc (0)
I (3884) wifi:state: assoc -> run (10)
I (3924) wifi:connected with BT-P2CKZW, aid = 19, channel 11, BW20, bssid = ac:84:c9:b7:8f:82
I (3924) wifi:security: WPA2-PSK, phy: bgn, rssi: -65
I (3924) wifi:pm start, type: 1
I (4014) wifi:AP's beacon interval = 102400 us, DTIM period = 3
I (5434) wifi:<ba-add>idx:0 (ifx:0, ac:84:c9:b7:8f:82), tid:0, ssn:2, winSize:64
␛[0;32mI (5554) example_connect: Got IPv6 event: Interface "example_netif_sta" address: fe80:0000:0000:0000:260a:c4ff:fef8:7eec, type: ESP_IP6_ADDR_IS_LINK_LOCAL␛[0m
␛[0;32mI (6424) esp_netif_handlers: example_netif_sta ip: 192.168.1.81, mask: 255.255.255.0, gw: 192.168.1.254␛[0m
␛[0;32mI (6424) example_connect: Got IPv4 event: Interface "example_netif_sta" address: 192.168.1.81␛[0m
␛[0;32mI (6434) example_common: Connected to example_netif_sta␛[0m
␛[0;32mI (6434) example_common: - IPv4 address: 192.168.1.81,␛[0m
␛[0;32mI (6444) example_common: - IPv6 address: fe80:0000:0000:0000:260a:c4ff:fef8:7eec, type: ESP_IP6_ADDR_IS_LINK_LOCAL␛[0m
␛[0;31mE (6484) example: DNS lookup failed err=202 res=0x0␛[0m
␛[0;31mE (7484) example: DNS lookup failed err=202 res=0x0␛[0m
␛[0;31mE (8484) example: DNS lookup failed err=202 res=0x0␛[0m