Search found 19 matches
- Wed Aug 21, 2019 7:30 pm
- Forum: General Discussion
- Topic: ESP32 Flashing fails after starting with timeout
- Replies: 0
- Views: 2494
ESP32 Flashing fails after starting with timeout
I have an ESP32-WROOM, as seen here : https://www.mouser.co.uk/ProductDetail/356-ESP-WROOM-32 In the Arduino IDE, I compile and verify my sketch, and then attempt an upload. Before i upload, the serial monitor shows: rst:0x1 (POWERON_RESET),boot:0x23 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2)) wait...
- Thu May 09, 2019 9:56 am
- Forum: General Discussion
- Topic: What would I need to enable flashing to a ESP32-WROOM-32
- Replies: 14
- Views: 29382
Re: What would I need to enable flashing to a ESP32-WROOM-32
I can see how that achieves:
But how does it achieve:
-- That happens when I push the program button.To put the device into programming mode you need to pull EN & GPIO0 low.
But how does it achieve:
-- is the 'moments later' part the 2.2uF capacitor C1?Then release EN, and moments later release GPIO0.
- Wed May 08, 2019 4:12 pm
- Forum: General Discussion
- Topic: What would I need to enable flashing to a ESP32-WROOM-32
- Replies: 14
- Views: 29382
Re: What would I need to enable flashing to a ESP32-WROOM-32
Hi - thanks for the response. The thing is, I already have external programmer boards I could use which are pretty much the circuit you show there. So i tend to favour having a way to enable the the board to be in programmer mode on its own, and then simply conect my UARTs on the ESP to my existing ...
- Wed May 08, 2019 7:53 am
- Forum: General Discussion
- Topic: What would I need to enable flashing to a ESP32-WROOM-32
- Replies: 14
- Views: 29382
Re: What would I need to enable flashing to a ESP32-WROOM-32
Well spotted - GPIO2 I meant FT232R When you say the enable pin pullup circuit, you mean: https://i.imgur.com/zSrkl6Q.png ie make sure Enable is pulled high. Also I see in the schematic on the datasheet that it has: https://i.imgur.com/cdJagq7.png so do I need to make sure I have C1, C2, C3 and C4 o...
- Wed May 08, 2019 7:20 am
- Forum: General Discussion
- Topic: What would I need to enable flashing to a ESP32-WROOM-32
- Replies: 14
- Views: 29382
Re: What would I need to enable flashing to a ESP32-WROOM-32
Hi - thank you that's helpful. So basically Serial bootloader -- is what I need to get to program the chip from my ide? That means pulling both GPIO0 and GPIO2(fixed) low. I presume at that point I would need to connect UART to Pins TXD / RXD (35 and 34 respectively) with something like an FTDI RS23...
- Tue May 07, 2019 6:00 pm
- Forum: General Discussion
- Topic: What would I need to enable flashing to a ESP32-WROOM-32
- Replies: 14
- Views: 29382
What would I need to enable flashing to a ESP32-WROOM-32
Hi, I am designing a PCB - and am looking to use this chip ESP32-WROOM-32 https://www.mouser.co.uk/ProductDetail/Espressif-Systems/ESP32-WROOM-32?qs=sGAEpiMZZMu3sxpa5v1qrlicty8cYJkOwWGOmn8CP2I%3D . When writing my software (using Arduino core) I am using a breakout board(similar to this https://www....
- Thu Mar 15, 2018 8:54 pm
- Forum: General Discussion
- Topic: What is the best most safe way to drive this Relay?
- Replies: 18
- Views: 25639
Re: What is the best most safe way to drive this Relay?
Does this happen when you run my project on your esp32 or anybody elses?
- Tue Mar 13, 2018 11:39 am
- Forum: General Discussion
- Topic: How would I interface with this bus switch
- Replies: 3
- Views: 5367
How would I interface with this bus switch
Hi all, I am wondering how to interface with this bus switch from a ESP32. I need to drive OE1 and OE2 LOW at 5v , see datasheet here : http://www.farnell.com/datasheets/2288300.pdf?_ga=2.150325878.1322304222.1520888675-1694002906.1520888675 I know that I can only drive up to 3.3v from the ESP32 dir...
- Mon Mar 12, 2018 10:58 pm
- Forum: General Discussion
- Topic: What is the best most safe way to drive this Relay?
- Replies: 18
- Views: 25639
Re: What is the best most safe way to drive this Relay?
Absolutely, look at the source code!
- Sun Mar 11, 2018 8:47 pm
- Forum: General Discussion
- Topic: What is the best most safe way to drive this Relay?
- Replies: 18
- Views: 25639
Re: What is the best most safe way to drive this Relay?
Perhaps literally just run my project and check the voltage on Pin 22....it shouldn't matter if you have the i2s hooked up to a dac or not.