Search found 16 matches

by hemant.chaudhari
Tue Sep 04, 2018 7:18 am
Forum: General Discussion
Topic: Failed to connect to ESP32: Timed out waiting for packet header
Replies: 1
Views: 630

Failed to connect to ESP32: Timed out waiting for packet header

Hello, We have made an development board using wroom32 module.I am trying to flash a code into it using usb cable but getting following error Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000 )... esptool.py v2.3.1 Connecting........_____....._____....._____....._____....._____......
by hemant.chaudhari
Thu Aug 09, 2018 5:59 am
Forum: General Discussion
Topic: Custom partition for storing data
Replies: 3
Views: 1100

Re: Custom partition for storing data

Thanks Neil,
I have now created a customized partition.

I would also like to know that each location in esp32 flash is of how much bytes. eg. if I am using
spi_flash_write(0x304240 temp, sizeof(temp));
then 0x304240 can store how much bytes?
by hemant.chaudhari
Wed Aug 08, 2018 12:51 pm
Forum: General Discussion
Topic: Ways to make binary smaller?
Replies: 15
Views: 5927

Re: Ways to make binary smaller?

Thanks ESP_Angus....
by hemant.chaudhari
Wed Aug 08, 2018 11:08 am
Forum: General Discussion
Topic: Custom partition for storing data
Replies: 3
Views: 1100

Custom partition for storing data

Hello, I want to flash a custom partition table.I am having 4MB external flash with esp32. Can I create custom partition which will store the data. I am trying to flash # Name, Type, SubType, Offset, Size, Flags nvs, data, nvs, 0x9000, 0x4000 otadata, data, ota, 0xd000, 0x2000 phy_init, data, phy, 0...
by hemant.chaudhari
Wed Aug 08, 2018 6:01 am
Forum: General Discussion
Topic: Ways to make binary smaller?
Replies: 15
Views: 5927

Re: Ways to make binary smaller?

Hello,

You can also enable "compressed upload" in "serial flasher config" in "menuconfig" utility.
by hemant.chaudhari
Fri Aug 03, 2018 4:50 am
Forum: General Discussion
Topic: How to store string in flash using SPI_FLASH_WRITE .
Replies: 1
Views: 1005

How to store string in flash using SPI_FLASH_WRITE .

Hello,

Actually I am trying to store an signature string to identify if this is a first boot or not
eg
#define signature "THIS IS NOT FIRST BOOT"
How to store string in flash using SPI_FLASH_WRITE ,kindly post an example for better understanding

Thanks
by hemant.chaudhari
Mon Jul 30, 2018 11:52 am
Forum: General Discussion
Topic: latitude and longitude using esp32
Replies: 2
Views: 1242

latitude and longitude using esp32

Hello,

How to get latitude and longitude using esp32.Also tell me how to get public ip for my esp32
by hemant.chaudhari
Mon Jul 09, 2018 10:24 am
Forum: General Discussion
Topic: Does ESP32 erases whole sector while writing a byte to flash
Replies: 3
Views: 981

Re: Does ESP32 erases whole sector while writing a byte to flash

ok got it....Thanks

So I can use the esp32 wroom 32 flash for continuous data storage without having concern about read/write cycles
by hemant.chaudhari
Fri Jun 29, 2018 6:40 am
Forum: General Discussion
Topic: Maximum usable nvs in wroom32
Replies: 5
Views: 1756

Re: Maximum usable nvs in wroom32

Thanks...I will definitely look for documentation regarding SPIFFS and will try to implement that
by hemant.chaudhari
Fri Jun 29, 2018 5:52 am
Forum: General Discussion
Topic: Does ESP32 erases whole sector while writing a byte to flash
Replies: 3
Views: 981

Does ESP32 erases whole sector while writing a byte to flash

Hello, I am using WROOM32 module which is having 4MB of flash connected to ESP32, I am using "spi_flash_write" API in order to write into the flash. I want to know when I write a byte into flash, does it holds the data into RAM and erases the page and after changing that particular byte the page get...

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