Search found 51 matches
- Wed Mar 08, 2017 10:52 pm
- Forum: General Discussion
- Topic: Unable to boot (read flash) when connected to custom PCB
- Replies: 7
- Views: 10024
Re: Unable to boot (read flash) when connected to custom PCB
Ah, it doesn't say GPIO12, but rather MTDI under the strapping pins section, so I didn't get it before. So, in my next revision of my board it should avoid using these pins then; - GPIO0, GPIO2, GPIO5, GPIO12 and GPIO15 (because they are strapping pins) - GPIO6, GPIO7, GPIO8, GPIO9, GPIO10 and GPIO1...
- Wed Mar 08, 2017 10:22 pm
- Forum: General Discussion
- Topic: Unable to boot (read flash) when connected to custom PCB
- Replies: 7
- Views: 10024
Re: Unable to boot (read flash) when connected to custom PCB
Strapping pins? Do you mean soldering bridges? Or something else?
I'm using GPIO_12 as the SCL for my I2C on the other board. It is pulled high by the I2C pullup resistors. Is GPIO_12 (physical pin 14) not usable?
I'm using GPIO_12 as the SCL for my I2C on the other board. It is pulled high by the I2C pullup resistors. Is GPIO_12 (physical pin 14) not usable?
- Wed Mar 08, 2017 9:55 pm
- Forum: General Discussion
- Topic: Unable to boot (read flash) when connected to custom PCB
- Replies: 7
- Views: 10024
Unable to boot (read flash) when connected to custom PCB
Hi guys, this might be a hopeless question to answer, but maybe someone has a bright idea. I've made a custom PCB with a ESP-WROOM-32 on it. Then I've made another PCB (with all my sensors), and connect those two board together using a 60-pin connector. If I start up my ESP-board when the other PCB ...
- Tue Mar 07, 2017 10:01 pm
- Forum: General Discussion
- Topic: Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
- Replies: 4
- Views: 7022
Re: Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
Correct, I only did 'make app-flash' out of habbit, since that's what I normally do on the Sparkfun Thing.
I did a 'make flash' now, and it works even when I turn the Bluetooth back off again
I did a 'make flash' now, and it works even when I turn the Bluetooth back off again
- Tue Mar 07, 2017 9:01 pm
- Forum: General Discussion
- Topic: Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
- Replies: 4
- Views: 7022
Re: Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
For some reason it works when I enable Bluetooth, as Rudi describes here.
- Tue Mar 07, 2017 8:39 pm
- Forum: General Discussion
- Topic: Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
- Replies: 4
- Views: 7022
Works on Sparkfun Thing, but fails on custom ESP-Wroom-32
Hi, first a disclaimer - my problem might be related to my own poorly designed PCB, but I'm not sure so I'll ask. I've made a custom PCB for an ESP-WROOM-32. I've gotten two testprograms, that both work on my Sparkfun Thing, to work. One is a Blinky app, and the other has an interrupt that reacts wh...
- Wed Mar 01, 2017 9:57 pm
- Forum: ESP-IDF
- Topic: Issues with I2C? Only 1 of 4 devices found by i2cscanner.c
- Replies: 14
- Views: 23354
Re: Issues with I2C? Only 1 of 4 devices found by i2cscanner.c
Aha, very nicely troubleshooted.
I did infact copy this folder based from a previous project. The template I'm working out from is about 25 days old, did the default value get changed more recently than that?
I did infact copy this folder based from a previous project. The template I'm working out from is about 25 days old, did the default value get changed more recently than that?
- Wed Mar 01, 2017 6:37 pm
- Forum: ESP-IDF
- Topic: Issues with I2C? Only 1 of 4 devices found by i2cscanner.c
- Replies: 14
- Views: 23354
Re: Issues with I2C? Only 1 of 4 devices found by i2cscanner.c
Hi, looking at the traces from the logic analyzer I see that the one I did on the Teensy show a very stable 100KHz clock signal. On the trace I did on the ESP32 the clock signal is more like 98-99kHz, and does have some weird ticks, like for instance the 65kHz tick in the screenshot below. http://st...
- Tue Feb 28, 2017 11:10 pm
- Forum: General Discussion
- Topic: ESP32 dedicated freely downloadable book
- Replies: 19
- Views: 36762
Re: ESP32 dedicated freely downloadable book
This book is a fantastic resource for ESP32!
- Tue Feb 28, 2017 10:37 pm
- Forum: General Discussion
- Topic: Documentation for esp_err_t values?
- Replies: 2
- Views: 10367
Re: Documentation for esp_err_t values?
Thanks, so 263 = 0x107 = ESP_ERR_TIMEOUT.