Search found 2065 matches

by WiFive
Mon Nov 05, 2018 3:24 pm
Forum: Hardware
Topic: External power supply for ESP32 DevKit V1
Replies: 3
Views: 255

Re: External power supply for ESP32 DevKit V1

Just try it, it will probably work fine on stable 5v
by WiFive
Mon Nov 05, 2018 7:50 am
Forum: ESP32 IDF
Topic: SPI warning "Allocate RX buffer for DMA"
Replies: 4
Views: 147

Re: SPI warning "Allocate RX buffer for DMA"

Ok but it was probably luck your variable landed on a word boundary and it doesn't stop dma controller from corrupting data adjacent to your variable.
by WiFive
Mon Nov 05, 2018 1:35 am
Forum: General Discussion
Topic: Compiler flag oprion to change CPU FREQ ?
Replies: 4
Views: 154

Re: Compiler flag oprion to change CPU FREQ ?

How about calling esp_clk_cpu_freq to check? Gpio speed may be bottlenecked by peripheral bus.
by WiFive
Mon Nov 05, 2018 12:21 am
Forum: ESP32 IDF
Topic: SPI warning "Allocate RX buffer for DMA"
Replies: 4
Views: 147

Re: SPI warning "Allocate RX buffer for DMA"

The rx and tx buffer need to be length of multiples of 32 bits to avoid heap corruption.
by WiFive
Sat Nov 03, 2018 1:09 pm
Forum: Report Bugs
Topic: select() seems to signal data to read from a shut down socket [solved]
Replies: 3
Views: 177

Re: select() seems to signal data to read from a shut down socket

Yes graceful shutdown can allow you to finish writing before you close. Basically other side is politely saying "I'm done writing, are you done writing?"
by WiFive
Sat Nov 03, 2018 7:59 am
Forum: Report Bugs
Topic: select() seems to signal data to read from a shut down socket [solved]
Replies: 3
Views: 177

Re: select() seems to signal data to read from a shut down socket

Your code should recognize zero length read as a graceful disconnect.
by WiFive
Fri Nov 02, 2018 12:58 pm
Forum: ESP32 IDF
Topic: Connecting an ESP32 to a AP that has multiple SSID's
Replies: 1
Views: 121

Re: Connecting an ESP32 to a AP that has multiple SSID's

Multiple SSID sharing one BSSID (VLAN) might not be supported. One of ESP_ guys should know.
by WiFive
Fri Nov 02, 2018 4:52 am
Forum: ESP32 IDF
Topic: ESP BLE Mesh v0.5 Beta has been released
Replies: 10
Views: 1397

Re: ESP BLE Mesh v0.5 Beta has been released

Are we going to get a port of the whole zephyr bt/ble stack as an alternative to bluedroid?

Go to advanced search