Search found 8 matches

by FreddyVictor
Mon Jan 14, 2019 11:41 am
Forum: ESP32 Arduino
Topic: Crowbar
Replies: 4
Views: 700

Re: Crowbar

My solution will be to crowbar the ESP32 supply source, 9V. What does that mean? He/She means to simply short-circuit the 9volt supply ! Not sure I would recommend that since any power source for these chips is going to be able to supply a good amount of current, so who knows what may happen I'm su...
by FreddyVictor
Mon Jan 14, 2019 8:25 am
Forum: ESP32 Arduino
Topic: Tasks and LED Strips
Replies: 8
Views: 1043

Re: Tasks and LED Strips

^^^
yes, as boarchuzsays

yield() is a FreeRTOS function so abides by the rules: it gives control back to the scheduler
by FreddyVictor
Fri Jan 11, 2019 2:15 pm
Forum: ESP32 Arduino
Topic: Tasks and LED Strips
Replies: 8
Views: 1043

Re: Tasks and LED Strips

What are you trying to achieve exactly ? You presumably have one set of LED's but have 3 tasks trying to each send them a different sequence of patterns all at the same time? I'm no expert on FreeRTOS, but I don't believe you should be using delay() function in a task as it will lock-out the schedul...
by FreddyVictor
Thu Jan 10, 2019 12:48 pm
Forum: ESP32 Arduino
Topic: Activate mp3 speaker bluetooth playback
Replies: 2
Views: 450

Re: Activate mp3 speaker bluetooth playback

Does the maufacturer of the Bluetooth Speaker mention anything in their sales literature that it can do this ? It may be a good start to say which one you actually have I doubt there's an agreed communication protocol for this, so it needs someone to have a working setup and then listen-in on the co...
by FreddyVictor
Wed Dec 05, 2018 1:13 pm
Forum: ESP32 Arduino
Topic: ESP32-Arduino: How to use SD library with VSPI
Replies: 1
Views: 687

Re: ESP32-Arduino: How to use SD library with VSPI

OK, proviso, I'm new to ESP32.... I don't believe you need to make any changes to the sd.* files Just use the code as per your link Connect sdCard to vspi pins: //SCLK = 18, MISO = 19, MOSI = 23, SS = 5 and connect your sensor to hspi pins: //SCLK = 14, MISO = 12, MOSI = 13, SS = 15 or, you can choo...
by FreddyVictor
Wed Dec 05, 2018 9:06 am
Forum: ESP32 Arduino
Topic: WROVER with Arduino IDE
Replies: 3
Views: 1189

Re: WROVER with Arduino IDE

OK, I'm new to ESP32, so this may be wrong ! I believe you may need a new board configuration in the boards.txt file At the end of the compile, it gives a % used of program & data (RAM) The figure for data matches the board config line (WROVER board shown): esp32wrover.upload.maximum_data_size=32768...
by FreddyVictor
Mon Dec 03, 2018 1:03 pm
Forum: ESP32 Arduino
Topic: UART/Serial.write with communication status return
Replies: 1
Views: 416

Re: UART/Serial.write with communication status return

With standard UART, data can be (validly) sent, but, if nothing is waiting at the other end to receive it, will simply disappear...

I believe the only reliable way to know if the data was sent is if you get the receiver to reply back confirming it has been received
by FreddyVictor
Sat Dec 01, 2018 11:41 am
Forum: ESP32 Arduino
Topic: Calling function from inside ISR doesn't work
Replies: 3
Views: 648

Re: Calling function from inside ISR doesn't work

I think it's a bit more simple than that ...

for (int i; i < n; i++)
change to:
for (int i=0; i < n; i++)
might fix it

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