Getting I2C on ESP8266 to work

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virtualcodewarrior
I am trying to get i2c to work on my ESP8266, but don't have much luck.
I must be missing something.
Maybe someone here can help me.

I tried
```
I2C1.setup({ sda: D12, scl: D14 });
I2C.find(I2C1);
=undefined
```
I put 10k pull-ups on both GPIO12 and GPIO14

Correct me if i am wrong but I was assuming that the I2C.find command is similar to i2cdetect and should return a list of I2C compatible devices/addresses on the I2C bus.

If I specify a bitrate, like
```
I2C1.setup({ sda: D12, scl: D14, bitrate: 100000 });
```
my ESP8266 will crash/reset.

When I try to read from an valid device address (checked with my Raspberry pi) I get
```
I2C1.readFrom(0x11, 2);
ERROR: No ACK
=new Uint8Array([50, 41])
```
But the returned data is invalid and a similar result is returned when reading from an invalid device address (just with different data).

I am running this version of the firmware :
s3.voneicken.com/espruino/espruino_1v85.tve_master_66fde09_esp8266.tgz

@MaBe tested this build to have working support for I2C as mentioned in the
Latest Espruino build for Esp8266 topic.

I am trying to communicate with an rrd-102v2.0 (FM radio (RDA5807)).

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