You are reading a single comment by @profra and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@profra
@Gordon
Surely the resistor can have higher value e.g. 10K but on the other side 0,7mA is 100 times less than avg. consumption of ESP8266 which is in ON state :)
Frankly said I am using the other mode ... when ESP8266 is permanently switched off (pull-down resistor) and I turn it on at the moment when I need to send some data ... to understand my idea look at the picture... there are 3 options
... and still remains the possibility to generate RESET impulse and save one output of MCU for RESET signal
... probably a standard jumper would be too big for your PCB but wouldn't be bad to have this option in the form of 3 holes on the PCB
... the resistor on GPIO15 has to be there... GPIO15=MTDO.. if you want to boot from flash then you need pull-down
... It is also good to have RESET pin with pull-up resistor because then you can connect together pins RESET and GPIO16 -> generate wake-up signal from deep sleep mode... although I'm not sure if this mode is useful in this configuration (MCU+8266)
... You can find good info in the material from Espressif "0B-ESP8266Hardware_User_GuideEN_v1.1.pdf" ...
... link http://bbs.espressif.com/viewtopic.php?f=51&t=818
1 Attachment