Hello,
I am sorry to post here, but I have been searching for about 5 days and have found nothing for my problem.
I am developing a project on STM32L100RC and I want to connect to an ESP8266 Wifi Module. However, when I connect ESP8266 Vcc Pin to STM32L100RC 3.3V, LED2 starts blinking slow and then I cannot download code to flash memory via Keil.
I have seen on User Manual:
LD2 COM: Tricolor LED (COM) advises on the communication status as follows: Slow blinking Red LED/Off: At power on before USB initialization
Still can't understand what that means.
Thank you in advance,
How much current does the ESP8266 module draw, and is the supply/regulation adequate to support that? Consider other options to power the radio module.
What is "LED2" ?
"Still can't understand what that means."
So where did you read "that" ?
https://youtu.be/2mNc-v-OWSY
i had the similer problem, try this video
The term LED in this context typically means that it's a LIGHT EMITTING DIODE. Maybe the second one.