Search found 5 matches

by maxwell32
Sat May 27, 2017 10:57 am
Forum: ESP-IDF
Topic: SD Card and Wifi: Write sector and Timeout
Replies: 2
Views: 4862

SD Card and Wifi: Write sector and Timeout

Hello, i have following problem: I have 2 tasks running on two different cores on the ESP32. Task1 initializes the SD Card, writes some data to the SD Card successfully and then is doing nothing but vTaskDelay for testing. Task2 (Wifi task) initializes wifi in access point mode, accepts a client and...
by maxwell32
Sat May 27, 2017 9:58 am
Forum: ESP-IDF
Topic: SD card interface speed issues
Replies: 7
Views: 25467

Re: SD card interface speed issues

Thank you!
I switched to using writing/reading sectors instead of the FATFS library. Now I reached about 9 MB/s for reading 50KB (block size 512 Bytes). I also created my own simple file system that is specific for my application.
by maxwell32
Mon May 22, 2017 12:10 pm
Forum: ESP-IDF
Topic: SD card interface speed issues
Replies: 7
Views: 25467

SD card interface speed issues

Hello, i'm working with the SD card interface and I need to acheive a data rate of minimum 2 MByte/s for reading. At the moment I measured only 0.9 MByte/s and I can't get faster. :? I'm using an Intenso 8 GB Class 10 card in default speed mode with external pullups in Slot 1 and 4 Bit mode. I creat...
by maxwell32
Sun Apr 16, 2017 1:57 pm
Forum: ESP-IDF
Topic: Simple Wifi not working - rebooting
Replies: 3
Views: 7448

Re: Simple Wifi not working - rebooting

Thanks for your reply. I used my USB port to power it.
Now I built an external 3.3 power supply and it works without problems.

Thank you!
by maxwell32
Thu Apr 13, 2017 6:22 pm
Forum: ESP-IDF
Topic: Simple Wifi not working - rebooting
Replies: 3
Views: 7448

Simple Wifi not working - rebooting

Hello, I'm having serious issues getting the Wifi working. I want to create an access point and figured out that the esp_wifi_start() always leaded to a reboot of the ESP32. So I tried the esp-idf-template with the wifi-station-mode and commented the esp_wifi_connect()-line. But still an error occur...