My ESP8266 speak to me in "???" way
Posted: Fri Nov 26, 2021 10:17 amHello everyone,
I'm new here
I'm discovering the wonderful world of the esp8266 through the acquisition of the UNO+WiFi R3 ATmega328P+ESP8266, 8Mb flash, USB-TTL CH340G, Micro-USB board.
Before posting this message :
i configure the board in this mode
for arduino i selected Generic esp8266 module
I test the following command
when i open the serial monitor i get ?????? response at 9600 baud
when i switch on the board the ping trying this
i get this reponse
βΈ® Hello world !
so it's better but in this mode I can't raise any program because arduino can't communicate with esp8266
I don't understand why I get "??" in front of my "hello world".
and also during the videos that I could consult or the documentation that I could read I didn't see anywhere that a change of configuration on the esp8266 was necessary between the download and the reading of information in the serial monitor
if someone can help me I'm interested
thanks in advance
I'm new here
I'm discovering the wonderful world of the esp8266 through the acquisition of the UNO+WiFi R3 ATmega328P+ESP8266, 8Mb flash, USB-TTL CH340G, Micro-USB board.
Before posting this message :
- I "managed" to get out of the CH340 driver problem.
I was also able to get a micro usb cable that allows data exchange,
I think that I set up my arduino to get the right packets here
https://arduino.esp8266.com/stable/pack ... index.json
i configure the board in this mode
for arduino i selected Generic esp8266 module
I test the following command
Code: Select all
void setup() {
Serial.begin(9600);
Serial.println(" Hello world !");
}
void loop() {
// put your main code here, to run repeatedly:
}Code: Select all
Executable segment sizes:
ICACHE : 32768 - flash instruction cache
IROM : 236004 - code in flash (default or ICACHE_FLASH_ATTR)
IRAM : 26733 / 32768 - code in IRAM (IRAM_ATTR, ISRs...)
DATA : 1496 ) - initialized variables (global, static) in RAM/HEAP
RODATA : 900 ) / 81920 - constants (global, static) in RAM/HEAP
BSS : 25616 ) - zeroed variables (global, static) in RAM/HEAP
Sketch uses 265133 bytes (27%) of program storage space. Maximum is 958448 bytes.
Global variables use 28012 bytes (34%) of dynamic memory, leaving 53908 bytes for local variables. Maximum is 81920 bytes.
esptool.py v3.0
Serial port /dev/cu.usbserial-1410
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: e8:db:84:e4:45:4b
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Flash params set to 0x0340
Compressed 269280 bytes to 197705...
Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 269280 bytes (197705 compressed) at 0x00000000 in 19.2 seconds (effective 112.0 kbit/s)...
Hash of data verified.
Leaving...
Hard resetting via RTS pin...
when i open the serial monitor i get ?????? response at 9600 baud
when i switch on the board the ping trying this
i get this reponse
βΈ® Hello world !
so it's better but in this mode I can't raise any program because arduino can't communicate with esp8266
I don't understand why I get "??" in front of my "hello world".
and also during the videos that I could consult or the documentation that I could read I didn't see anywhere that a change of configuration on the esp8266 was necessary between the download and the reading of information in the serial monitor
if someone can help me I'm interested
thanks in advance