- Sun Aug 14, 2016 8:34 pm
#52965
Hi, I too have trouble. I have a V3 NodeMcu devboard.
Trial A {
I started with esptool command to erase_flash.
Then I issued a write_flash with only a cloud-built image (per
Running esptool.py instructions).
}
Doing this would yield the nonstopflickering LED upon reset.
Trial B {
When I erased_flash but then write_flash with the cloud-built image and then also offset the esp_init_data_default.bin in the same command it resets fine but serial connection was unable to.
}
ChrisSparks wrote:ivdok wrote:So, what's the deal? How do I fix it? And if I can't, what's the latest working build for this board?
esptool.py --port /dev/ttyUSB1 write_flash -fs 32m -fm dio 0x3fc000 esp_init_data_default.bin
That is also what I did.
Interesting fix! I repeat Trial A, and then issuing this offset esp_init_data_default.bin as a separate command seems to have made it work for me, but that is not without some initial weirdness from ESPlorer:
Code: Select allPORT OPEN 9600
Communication with MCU...
Got answer! AutoDetect firmware...
Communication with MCU established.
Can't autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.
ｽoowuｯou}ｯｭ溿$nﾙｴ`,l�ﾘl`<l,�lb<l臧�C �jG�ｮﾎﾎll└汕ﾆnﾝ褐)･@�� �
PORT CLOSED
PORT OPEN 9600
Communication with MCU...
Got answer! AutoDetect firmware...
Communication with MCU established.
Can't autodetect firmware, because proper answer not received (may be unknown firmware).
Please, reset module or continue.
�oowuｯou}ｯｭ溿=node.heap()
> =node.heap()
45960
> =node.heap()
45960
> =node.info()
1 5 4 1059827 1458400 4096 2 40000000
> =node.flashid()
1458400
>
PORT CLOSED
PORT OPEN 9600
Communication with MCU...
Got answer! AutoDetect firmware...
Communication with MCU established.
NodeMCU firmware detected.
=node.heap()
45960
>
PORT CLOSED
EDIT: I set baud in ESPlorer to 115200 and no longer see garbled text!
