Put functions in alphabetical order

docs/en/modules/si7021.md

@@ -29,6 +29,66 @@ fwrev = si7021.firmware()
 print(string.format("FW: %X\r\n", fwrev))
 ```
 
+## si7021.read()
+
+#### Syntax
+`si7021.read()`
+
+#### Parameters
+none
+
+#### Returns
+- `hum` humidity (see note below)
+- `temp` temperature (see note below)
+- `hum_dec` humidity decimal
+- `temp_dec` temperature decimal
+
+!!! note
+
+	If using float firmware then `hum` and `temp` are floating point numbers. On an integer firmware, the final values have to be concatenated from `hum` and `hum_dec` / `temp` and `temp_dec`.
+
+#### Example
+```lua
+local sda, scl = 6, 5
+i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
+si7021.setup()
+
+hum, temp, hum_dec, temp_dec = si7021.read()
+
+-- Integer firmware using this example
+print(string.format("Humidity:\t\t%d.%03d\nTemperature:\t%d.%03d\n", hum, hum_dec, temp, temp_dec))
+
+-- Float firmware using this example
+print("Humidity: "..hum.."\n".."Temperature: "..temp)
+```
+
+## si7021.serial()
+Read the individualized 64-bit electronic serial number of the Si7021 sensor.
+
+#### Syntax
+`si7021.serial()`
+
+#### Parameters
+none
+
+#### Returns
+- `sna` 32-bit serial number part a
+- `snb` 32-bit serial number part b, upper byte contains the device identification
+	* `0x00` or `0xFF` engineering samples
+	* `0x0D` `13` Si7013
+	* `0x14` `20` Si7020
+	* `0x15` `21` Si7021
+
+#### Example
+```lua
+local sda, scl = 6, 5
+i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
+si7021.setup()
+
+sna, snb = si7021.serial()
+print(string.format("SN:\t\t%X%X\nDevice:\tSi70%d", sna, snb, bit.rshift(snb,24)))
+```
+
 ## si7021.setting()
 Settings for the sensors configuration register to adjust measurement resolution, on-chip heater and read the supply voltage status.
 
@@ -90,63 +150,3 @@ local sda, scl = 6, 5
 i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
 si7021.setup()
 ```
-
-## si7021.read()
-
-#### Syntax
-`si7021.read()`
-
-#### Parameters
-none
-
-#### Returns
-- `hum` humidity (see note below)
-- `temp` temperature (see note below)
-- `hum_dec` humidity decimal
-- `temp_dec` temperature decimal
-
-!!! note
-
-	If using float firmware then `hum` and `temp` are floating point numbers. On an integer firmware, the final values have to be concatenated from `hum` and `hum_dec` / `temp` and `temp_dec`.
-
-#### Example
-```lua
-local sda, scl = 6, 5
-i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
-si7021.setup()
-
-hum, temp, hum_dec, temp_dec = si7021.read()
-
--- Integer firmware using this example
-print(string.format("Humidity:\t\t%d.%03d\nTemperature:\t%d.%03d\n", hum, hum_dec, temp, temp_dec))
-
--- Float firmware using this example
-print("Humidity: "..hum.."\n".."Temperature: "..temp)
-```
-
-## si7021.serial()
-Read the individualized 64-bit electronic serial number of the Si7021 sensor.
-
-#### Syntax
-`si7021.serial()`
-
-#### Parameters
-none
-
-#### Returns
-- `sna` 32-bit serial number part a
-- `snb` 32-bit serial number part b, upper byte contains the device identification
-	* `0x00` or `0xFF` engineering samples
-	* `0x0D` `13` Si7013
-	* `0x14` `20` Si7020
-	* `0x15` `21` Si7021
-
-#### Example
-```lua
-local sda, scl = 6, 5
-i2c.setup(0, sda, scl, i2c.SLOW) -- call i2c.setup() only once
-si7021.setup()
-
-sna, snb = si7021.serial()
-print(string.format("SN:\t\t%X%X\nDevice:\tSi70%d", sna, snb, bit.rshift(snb,24)))
-```