ESP8266 Community Forum

- Sun Jan 03, 2016 1:22 pm #37790 Interesting thanks for sharing!

Helpful? Donate To help support Mike http://www.esp8266basic.com click the donate button lets keep this project going and hope we can get the ESP32 in the mix. BEGINNERS GUIDE HERE http://www.esp8266.com/viewtopic.php?f=40&t=6732

Where I buy my ESP8266 boards from... (Banggood)

- Sun Jan 03, 2016 1:32 pm #37791 Look at the confidential documentation!

Section 7.3

2C-ESP8266__SDK__Programming Guide__EN_v1.1.2.pdf

You do not have the required permissions to view the files attached to this post.

Helpful? Donate To help support Mike http://www.esp8266basic.com click the donate button lets keep this project going and hope we can get the ESP32 in the mix. BEGINNERS GUIDE HERE http://www.esp8266.com/viewtopic.php?f=40&t=6732

Where I buy my ESP8266 boards from... (Banggood)

- Sun Jan 03, 2016 1:40 pm #37793 Here is the I2C documentation:

8C-ESP8266__Interface_I2C__EN_v1.0.pdf

It appears to be all simulation as stated according to the documentation...

You do not have the required permissions to view the files attached to this post.

Last edited by forlotto on Sun Jan 03, 2016 1:48 pm, edited 1 time in total.

Helpful? Donate To help support Mike http://www.esp8266basic.com click the donate button lets keep this project going and hope we can get the ESP32 in the mix. BEGINNERS GUIDE HERE http://www.esp8266.com/viewtopic.php?f=40&t=6732

Where I buy my ESP8266 boards from... (Banggood)

- Sun Jan 03, 2016 1:43 pm #37794 Those are still done by using software bit-banging.

Take a look at those files (they don't use the registers I've mentioned) :

Code: Select allesp_iot_sdk_v1.5.0/examples/IoT_Demo/include/driver/i2c_master.h
esp_iot_sdk_v1.5.0/examples/IoT_Demo/driver/i2c_master.c
esp_iot_sdk_v1.5.0/examples/driver_lib/include/driver/i2c_master.h
esp_iot_sdk_v1.5.0/examples/driver_lib/driver/i2c_master.c


I presume that their hardware doesn't work, or they simply didn't have enough space on the die ...