I am using esp-azure 1.0 release, unchanged. Device is ESP32 WROVER. I have done many experiments but fail to find anything that I may be doing wrong. In hopes that someone can reproduce the issue and solve it, I am attaching a bare-bones example, built on the IDF's Wi-Fi "station" example. I have added esp-azure and just try to get SNTP and then request provisioning.
What is attached.
Basic project, including partitions.csv and sdkconfig.defaults files. Project has been built against v4.0-beta2 (CMake) and v3.3 (make). It does not include esp-azure (because of its size), but expects this to be symbolically linked to components/esp-azure/. This works for Linux or Windows and the build tools don't know the difference.
What is not included.
Dummy Wi-Fi credentials are in the sdkconfig.defaults file, so anyone wishing to reproduce the issue should substitute theirs in that place. Also, my cert and key files are not included. I use lines like the following to program them in from the command line:
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Ver 3.3 IDF: Four (4) reset-button-sequence needed to get through all script steps. parttool.py -p /dev/ttyUSB0 --partition-name cert write_partition --input partn_cfg/b4e62dd609_cert.bin parttool.py -p /dev/ttyUSB0 --partition-name key write_partition --input partn_cfg/b4e62dd609_key.bin Wrote 8192 bytes (4113 compressed) at 0x00efd000 in 0.4 seconds (effective 178.1 kbit/s)... Hash of data verified. Wrote 4096 bytes (2497 compressed) at 0x00eff000 in 0.2 seconds (effective 146.4 kbit/s)... Hash of data verified. # v4.0_beta2 IDF: parttool.py -p /dev/ttyUSB0 write_partition --partition-name cert --input partn_cfg/b4e62dd609_cert.bin Written contents of file 'partn_cfg/b4e62dd609_cert.pem' at offset 0x930000 parttool.py -p /dev/ttyUSB0 write_partition --partition-name key --input partn_cfg/b4e62dd609_key.bin Written contents of file 'partn_cfg/b4e62dd609_key.pem' at offset 0x932000
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I (3680) wifi station: got ip:192.168.1.106 D (3680) wifi station: STA Connect bit received. Initializing SNTP ESP platform sntp inited! Time is not set yet. Connecting to WiFi and getting time over NTP. timeinfo.tm_year:70 Waiting for system time to be set... tm_year:0[times:1] Waiting for system time to be set... tm_year:70[times:2] Waiting for system time to be set... tm_year:70[times:3] I (9700) platform: The current date/time is: Mon Dec 16 01:51:23 2019 W (9700) wifi station: Attempt MQT INiT. D (9700) nvs: nvs_open_from_partition storage 0 D (9700) nvs: nvs_close -2146599950 AAA AAA provis nvs = 0 E (9710) MQTT: Reading provision flag from NVS failed Provisioning AbCdEf API Version: 1.2.14 Iothub API Version: 1.2.14f AbCdEf custom HSM create gen key: 3ffcede4 gen cert: 3ffccddc Provisioning AbCdEf line 214 Provisioning AbCdEf line 219 trusted cert samples Provisioning AbCdEf line 226 call reg dev 0x3ffccb40 Provisioning AbCdEf line 234 about to enter DO LOOP 40 D (9780) esp-tls: host:global.azure-devices-provisioning.net: strlen 37 D (10020) esp-tls: connecting... D (10450) esp-tls: handshake in progress... D (10500) esp-tls: handshake in progress... D (10540) esp-tls: handshake in progress... [b]E (10770) esp-tls: mbedtls_ssl_handshake returned -0x7500[/b] I (10770) esp-tls: Certificate verified.