Search found 3 matches

by michal1
Wed Dec 04, 2019 4:57 pm
Forum: ESP-IDF
Topic: 32-character long WiFi SSID Support
Replies: 1
Views: 5426

32-character long WiFi SSID Support

Hi all,

I was just wondering whether the IDF supports connecting to WiFi networks with 32-character long SSIDs?

It seems that the ssid field in wifi_sta_config_t is only 32 characters long and NULL-terminated, making the maximal length 31.

The IEEE standard (802.11) however specifies that the ...
by michal1
Wed May 15, 2019 4:33 pm
Forum: Report Bugs
Topic: Bug in FPU Coprocessor float division?
Replies: 7
Views: 19907

Re: Bug in FPU Coprocessor float division?

It turns out there is a bug in divsf() implementation in https://github.com/espressif/esp-idf/blob/aaf12390eb14b95589acd98db5c268a2e56bb67e/components/esp32/test/test_fp.c

I believe the correct implemenation should be:

float divsf(float a, float b)
{
float result;
asm volatile (
"wfr f0, %1\n ...
by michal1
Tue May 14, 2019 8:03 pm
Forum: Report Bugs
Topic: Bug in FPU Coprocessor float division?
Replies: 7
Views: 19907

Bug in FPU Coprocessor float division?

Hello,

I have noticed that using the native FPU division instructions leads to unexpected results when dividing two floating numbers of significantly different exponents.

It seems that if a division operator is used in C code, gcc inserts a call to __divsf3() which does not use the native FPU ...

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