pim/mgos_i2c_mock
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Author SHA1 Message Date
Pim van Pelt
37838f0062 SI7021: Implement Status 
This allows us to detect if the I2C device is indeed an Si7021.
By reading status, turning the heater on, reading status, and turning
the heater off, reading status, we will see three different states:
status bit13 is 'heater on' (0=off, 1=on).
In status0, bit13 will be 0,
In status1, bit13 will be 1, (the heater is now on)
In status2, bit13 will be 0.
 2018-04-02 21:40:42 +02:00
Pim van Pelt
6b0774033e SI7021 
Add mgos_si7021_cmd() mimicking the SHT31 driver.
 2018-04-02 21:16:32 +02:00
Pim van Pelt
ff891426ab Finish Si7021 
Based on datasheet:
  https://cdn.instructables.com/ORIG/FOR/G7DY/IHXRC1XG/FORG7DYIHXRC1XG.pdf

- Add CRC8 (poly 0x31, init 0x00)
- Add Temperature and Humidity data polling.
 2018-04-02 21:11:18 +02:00
Pim van Pelt
5b0fcadd9f Refactor I2C SMBUS 
Add SI7021 chipset, partially done.
 2018-04-02 20:38:26 +02:00
Pim van Pelt
5d92a45b58 Remove dangling file. 2018-04-02 17:59:59 +02:00
Pim van Pelt
2899ee59de Initial (empty) Si7021 driver 2018-04-02 17:59:41 +02:00
Pim van Pelt
27bba32bd9 Remove unimplemented calls 2018-04-02 17:54:39 +02:00
Pim van Pelt
b1d92a32a8 Include first driver: SHT31 
Make I2C reads blocking w/ timeout
Add SHT31 driver, roughly :)
Fix mg_time() to return a double.
 2018-04-02 17:29:13 +02:00
Pim van Pelt
cef7c5107d Mock out mgos_i2c.h to work with Linux. 2018-04-02 13:30:45 +02:00