CC3220SF: Handling Special Character Encoding When Submitting Wi-Fi Profile Data

Swapnil

Part Number: CC3220SF

Tool/software:

Hi Everyone,

I've developed a web interface for my CC3220SF chip, and I'm encountering an issue when submitting form data. The JavaScript function encodeURIComponent() is used to encode fields like user ID and password. However, when special characters (e.g., & and #) are part of the password, they are encoded as %26 and %23, respectively, and this causes issues in processing the data.

My question is:

Does the CC3220SF device require any special handling for encoded characters, or does it follow standard URL encoding conventions?
Are there specific best practices or recommendations when handling special characters on the CC3220SF platform?

Thank you for your help!

6 months ago

0 Shlomi Itzhak 6 months ago

TI__Guru 61575 points

Hi,

When directly using the API, password and SSID are taken as-is so you should not have any issue.

However, when working via the HTTP server, there might be extra processing of data and some conversions are done.

In order to send % for example, you should use the "%25" (i.e. % following the ascii hex value of '%').

for example: instead of "abc%def", you will need to send "abc%25def".

0 Swapnil 6 months ago in reply to Shlomi Itzhak

Intellectual 550 points

Hi,
"abc%def" = "abc%25def"

'abc+def' = abc%2Bdef

encodeURIComponent() is already doing that for me

At this momenet, i can use all special character as password exccept + and %. This two character does not work.

i have seen this previous answer from TI regarding character + and %.

https://e2e.ti.com/support/wireless-connectivity/wi-fi-group/wifi/f/wi-fi-forum/1100894/cc3220sf-wi-fi-password-character-set
is this still relevant?

0 Shlomi Itzhak 6 months ago in reply to Swapnil

TI__Guru 61575 points

yes, it is probably still relevant.

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CC3220SF: Handling Special Character Encoding When Submitting Wi-Fi Profile Data