Search found 90 matches
- Thu Jan 25, 2018 9:21 pm
- Forum: ESP32 Arduino
- Topic: esp32 running basic WiFi code, I get "Hmmm...can’t reach this page"
- Replies: 9
- Views: 15207
Re: esp32 running basic WiFi code, I get "Hmmm...can’t reach this page"
Things I would try: - leave serial monitor connected, add a Serial.print to loop(), displaying a time stamp every second. When device becomes unavailable, is timestamp still incrementing? - when device becomes unavailable, does it still respond to ping? - when device is unavailable, does it still ap...
- Thu Jan 25, 2018 8:30 pm
- Forum: ESP32 Arduino
- Topic: BLE Client and MQTT
- Replies: 3
- Views: 9004
Re: BLE Client and MQTT
In line 94 you assign a C string to a variable defined as String. A C string is not the same as a String.
result = value.c_str();
result = value.c_str();
- Wed Jan 24, 2018 4:54 pm
- Forum: ESP32 Arduino
- Topic: Voltage measure problem
- Replies: 1
- Views: 3590
Re: Voltage measure problem
Some numbers would be useful.
- Sat Dec 30, 2017 7:22 pm
- Forum: General Discussion
- Topic: uart_read_bytes
- Replies: 5
- Views: 13911
Re: uart_read_bytes
I haven’t tried it, but functions like this usually return immediately if the requested data is available. The alternative doesn’t make sense.
- Tue Dec 05, 2017 7:44 am
- Forum: General Discussion
- Topic: Limit precision of double in json object or array
- Replies: 6
- Views: 7765
Re: Limit precision of double in json object or array
It seems you are confusing the precision of a data type with its printed representation.
- Fri Dec 01, 2017 2:55 am
- Forum: ESP32 Arduino
- Topic: Disable fifo buffers on the ESP32 UART?
- Replies: 4
- Views: 9100
Re: Disable fifo buffers on the ESP32 UART?
I think you are seeing a limitation of using delay() for small values, not a FIFO problem.
- Thu Nov 30, 2017 2:49 am
- Forum: ESP32 Arduino
- Topic: Disable fifo buffers on the ESP32 UART?
- Replies: 4
- Views: 9100
Re: Disable fifo buffers on the ESP32 UART?
That's not what I see. Running this code, with loopback wire from TX to RX, there's no evidence of a problem with write buffering. /* * From HardwareSerial.cpp, UART default pins: * if(_uart_nr == 0 && rxPin < 0 && txPin < 0) { rxPin = 3; txPin = 1; } if(_uart_nr == 1 && rxPin < 0 && txPin < 0) { rx...
- Fri Nov 17, 2017 5:45 am
- Forum: ESP32 Arduino
- Topic: Problem with DHT22 on ESP32
- Replies: 3
- Views: 11059
Re: Problem with DHT22 on ESP32
Does your application really require that every read is successful? Have you determined what the failure rate is? Does an immediate retry alway/usually/sometimes/never succeed? Of course, it would be nice to know what is happening, but if you’re not trying to catch instantaneous changes in readings,...
- Sun Nov 12, 2017 8:00 pm
- Forum: ESP32 Arduino
- Topic: store data
- Replies: 1
- Views: 4862
Re: store data
I would use SPIFFS. It’s not overwritten when a new sketch is uploaded.
- Sun Nov 05, 2017 7:57 pm
- Forum: General Discussion
- Topic: Parsing File's timestamp on a SD card
- Replies: 8
- Views: 10472
Re: Parsing File's timestamp on a SD card
It is explained here in the tzset () code: The TZ environment variable is expected to be in the following POSIX format: stdoffset1[dst[offset2][,start[/time1],end[/time2]]] where: std is the name of the standard time-zone (minimum 3 chars) offset1 is the value to add to local time to arrive at Unive...