We are currently using TI CC3200 in our project and would like to migrate to esp8266. We are doing a feasibility study and facing issues as described below.
Hardware Module Used : ESP-12
1) We built the following two images successfully with latest SDK esp_iot_sdk_v1.1.0_15_05_26). We selected all default options when running ./gen_misc.sh
eagle.flash.bin-------->0x00000
eagle.irom0text.bin---->0x40000
2) Images are flashed along with esp_init_data_default.bin (0x7C000) and blank.bin (0x7E000) successfully
3) When booted in operation mode, we observed garbage (baud rate 115200) and in that garbage We noticed a message "MEM CHECK FAIL!!!" . Windows can soft-AP in range but when try to connect with "v*%W>L<@i&Nxe!" password connection fails
We tried to isolate the fact if there is something wrong with the esp-12 module. So we used different images and it works fine with other images. Please see details below.
1) We have downloaded (old)ESP Flash Download Tool.zip from https://drive.google.com/folderview?id=0B3dUKfqzZnlwRXBnV2NzUUNJUms&usp=drive_web
2) This zip file has bin folder with two files
eagle.app.v6.flash.bin
eagle.app.v6.irom0text.bin
3) When we flash these two binaries instead of the ones generated from SDK, It works fine and following logs are observed with baud rate of 9600. We are also able to connect to soft-AP with password "v*%W>L<@i&Nxe!"
OK
mode : softAP(1a:fe:34:9e:7c:1f)
add if1
dhcp server start:(ip:192.168.4.1,mask:255.255.255.0,gw:192.168.4.1)
bcn 100
add 1
aid 1
pm close 0 0 0/18200095
station: 3c:77:e6:17:9c:d3 join, AID = 1
station: 3c:77:e6:17:9c:d3 leave, AID = 1
rm match
pm close 0 0 0/18209894
add 1
aid 1
pm close 0 0 0/19504698
station: 3c:77:e6:17:9c:d3 join, AID = 1
station: 3c:77:e6:17:9c:d3 leave, AID = 1
rm match
pm close 0 0 0/238490061
T:-2,ff4,2
This proves the fact that there is nothing wrong with esp-12 module. The problem is with the images created from SDK.
We have couple of queries:
1) How do we solve this issue?
2) In what scenario "MEM CHECK FAIL!!!" error is expected
3) What board/module SDK are tested with? I mean the images built with default options are expected to work on any board based on esp8266 or do we need to buy some specific board/module?
4) Is there any paid support available? If yes, where do we contact for that? We have a project developed on CC3200 and expected to go for production soon. Management wants to explore if esp8266 can meet our requirement asap.
Best Regards