ds3231: require bit module, doc formatting (#1891)
This commit is contained in:
Arnim Läuger
Marcel Stör
parent
50a5c02119
commit
9c71c64dcd
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@ -1,9 +1,9 @@
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require("ds3231")
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-- ESP-01 GPIO Mapping
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gpio0, gpio2 = 3, 4
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i2c.setup(gpio0, gpio2, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231.init(gpio0, gpio2)
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require("ds3231")
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second, minute, hour, day, date, month, year = ds3231.getTime();
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@ -1,9 +1,11 @@
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require('ds3231')
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port = 80
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-- ESP-01 GPIO Mapping
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gpio0, gpio2 = 3, 4
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i2c.setup(gpio0, gpio2, scl, i2c.SLOW) -- call i2c.setup() only once
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require('ds3231')
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port = 80
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days = {
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[1] = "Sunday",
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@ -30,8 +32,6 @@ months = {
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[12] = "December"
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}
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ds3231.init(gpio0, gpio2)
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srv=net.createServer(net.TCP)
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srv:listen(port,
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function(conn)
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@ -1,67 +1,43 @@
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# DS3231 Module
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## Require
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```lua
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ds3231 = require("ds3231")
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```
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## Release
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```lua
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ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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<a id="ds3231_init"></a>
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##init()
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####Description
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Setting the pins of DS3231.
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####Syntax
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init(sda, scl)
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####Parameters
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sda: 1~10, IO index.
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scl: 1~10, IO index.
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####Returns
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nil
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####Example
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```lua
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ds3231 = require("ds3231")
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ds3231.init(3, 4)
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-- Don't forget to release it after use
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ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_settime"></a>
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## setTime()
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#### Description
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Sets the current date and time.
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if _disableOscillator_ is set to 1 the oscillator will **stop** on battery.
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If _disableOscillator_ is set to 1 the oscillator will **stop** on battery.
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#### Syntax
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setTime(second, minute, hour, day, date, month, year, disableOscillator)
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`ds3231.setTime(second, minute, hour, day, date, month, year[, disableOscillator])`
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#### Parameters
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second: 00-59
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minute: 00-59
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hour: 00-23
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day: 1-7 (Sunday = 1, Saturday = 7)
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date: 01-31
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month: 01-12
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year: 00-99
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disableOscillator: (optional) 0-1
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- `second`: 00-59
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- `minute`: 00-59
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- `hour`: 00-23
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- `day`: 1-7 (Sunday = 1, Saturday = 7)
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- `date`: 01-31
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- `month`: 01-12
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- `year`: 00-99
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- `disableOscillator`: (optional) 0-1, defaults to 0 if omitted
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231 = require("ds3231")
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ds3231.init(3, 4)
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-- Set date and time to Sunday, January 18th 2015 6:30PM
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ds3231.setTime(0, 30, 18, 1, 18, 1, 15);
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@ -71,34 +47,31 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_getTime"></a>
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## getTime()
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#### Description
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Get the current date and time.
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#### Syntax
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getTime()
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`ds3231.getTime()`
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#### Parameters
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nil
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None
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#### Returns
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second: integer. Second 00-59
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minute: integer. Minute 00-59
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hour: integer. Hour 00-23
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day: integer. Day 1-7 (Sunday = 1, Saturday = 7)
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date: integer. Date 01-31
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month: integer. Month 01-12
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year: integer. Year 00-99
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- `second`: integer. Second 00-59
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- `minute`: integer. Minute 00-59
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- `hour`: integer. Hour 00-23
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- `day`: integer. Day 1-7 (Sunday = 1, Saturday = 7)
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- `date`: integer. Date 01-31
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- `month`: integer. Month 01-12
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- `year`: integer. Year 00-99
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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-- Get date and time
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second, minute, hour, day, date, month, year = ds3231.getTime();
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@ -112,13 +85,12 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_setAlarm"></a>
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## setAlarm()
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#### Description
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Set an alarm to be triggered on SQW pin:
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_alarm1_ has a precision of **seconds**; _alarm2_ has a precision of **minutes** (`second` parameter will be ignored).
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Alarms sets gpio.LOW over the SQW pin and let it unchanged until reloaded. When reloaded sets gpio.HIGH.
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@ -134,23 +106,24 @@ Alarm type set the alarm match conditions:
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- `ds3231.DATE` triggers when time match given `seconds`, `minutes`, and `hours` on date (day of the month) `date/day` parameters;
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#### Syntax
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setAlarm(alarmId, alarmType, seconds, minutes, hours, date/day)
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`ds3231.setAlarm(alarmId, alarmType, seconds, minutes, hours, date/day)`
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#### Parameters
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alarmId: 1-2
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alarmType: 1-7
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seconds: 00-59
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minutes: 00-59
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hours: 00-23
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date/day: 01-31 or 1-7 (Sunday = 1, Saturday = 7)
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- `alarmId`: 1-2
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- `alarmType`: 1-7
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- `seconds`: 00-59
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- `minutes`: 00-59
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- `hours`: 00-23
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- `date/day`: 01-31 or 1-7 (Sunday = 1, Saturday = 7)
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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-- Setting PIN1 to triggers on interrupt when alarm triggers
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gpio.mode(1,gpio.INT)
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@ -167,28 +140,26 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_reloadAlarms"></a>
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## reloadAlarms()
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#### Description
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Reload an already triggered alarm. Otherwise it will never be triggered again.
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There are two different alarms and they have to be reloaded both to let, even only one, to be triggered again. So there isn't a param to select which alarm to reload.
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#### Syntax
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reloadAlarms()
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`ds3231.reloadAlarms()`
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#### Parameters
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nil
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None
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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-- Setting PIN1 to triggers on interrupt when alarm triggers
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gpio.mode(1,gpio.INT)
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@ -205,27 +176,25 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_enableAlarm"></a>
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## enableAlarm()
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#### Description
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Enable an already setted alarm with the previous matching conditions. It reloads alarms internally.
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#### Syntax
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enableAlarm(alarmId)
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`ds3231.enableAlarm(alarmId)`
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#### Parameters
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alarmId: 1-2
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`alarmId`: 1-2
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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-- Trigger on x:20:15
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ds3231.setAlarm(1,ds3231.MINUTE,15,20)
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@ -243,29 +212,29 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_disableAlarm"></a>
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## disableAlarm()
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#### Description
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Disable an already setted alarm with the previous matching conditions.
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if _alarmId_ is not 1 or 2 it disables both alarms.
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**Warning**: `disableAlarm()` prevent alarms to trigger interrupt over SQW pin but alarm itself will triggers at the matching conditions as it could be seen on _status byte_.
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#### Syntax
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disableAlarm(alarmId)
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`ds3231.disableAlarm(alarmId)`
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#### Parameters
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alarmId: 0-2
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`alarmId: 0-2`
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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-- Trigger on x:20:15
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ds3231.setAlarm(1,ds3231.MINUTE,15,20)
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@ -283,28 +252,26 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_getBytes"></a>
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## getBytes()
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#### Description
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Get bytes of control, for debug purpose, and status of DS3231. To see what they means check the [Datasheet](http://datasheets.maximintegrated.com/en/ds/DS3231.pdf)
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#### Syntax
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getBytes()
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`ds3231.getBytes()`
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#### Parameters
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nil
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None
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#### Returns
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control: integer. Control 0-255
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status: integer. Status 0-143 (bit 6-5-4 unused)
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- `control`: integer. Control 0-255
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- `status`: integer. Status 0-143 (bit 6-5-4 unused)
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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control,status = ds3231.getBytes()
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print('Control byte: '..control)
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@ -315,29 +282,27 @@ ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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<a id="ds3231_resetStopFlag"></a>
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## resetStopFlag()
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#### Description
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Stop flag on status byte means that the oscillator either is stopped or was stopped for some period and may be used to judge the validity of the timekeeping data.
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When setted to 1 this flag keeps that values until changed to 0.
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Stop flag on status byte means that the oscillator either is stopped or was stopped for some period and may be used to judge the validity of the timekeeping data. When set to 1 this flag keeps that values until changed to 0.
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Call `resetStopFlag()` if you need to check validity of time data after that.
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#### Syntax
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resetStopFlag()
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`ds3231.resetStopFlag()`
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#### Parameters
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nil
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None
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#### Returns
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nil
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`nil`
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#### Example
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```lua
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i2c.setup(3, 4, scl, i2c.SLOW) -- call i2c.setup() only once
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ds3231=require("ds3231")
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ds3231.init(3, 4)
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control,status = ds3231.getBytes()
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if bit.band(bit.rshift(status, 7),1) == 1 then
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@ -349,6 +314,3 @@ end
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ds3231 = nil
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package.loaded["ds3231"]=nil
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```
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####See also
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**-** []()
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@ -5,6 +5,9 @@
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-- Tobie Booth <tbooth@hindbra.in>
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--------------------------------------------------------------------------------
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require("bit")
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require("i2c")
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local moduleName = ...
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local M = {}
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_G[moduleName] = M
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@ -39,21 +42,6 @@ local function addAlarmBit(val,day)
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return bit.bor(val,128)
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end
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-- initialize i2c
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--parameters:
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--d: sda
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--l: scl
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function M.init(d, l)
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if (d ~= nil) and (l ~= nil) and (d >= 0) and (d <= 11) and (l >= 0) and ( l <= 11) and (d ~= l) then
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sda = d
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scl = l
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else
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print("[ERROR] i2c config failed!") return nil
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end
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print("[LOG] DS3231 init done")
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i2c.setup(id, sda, scl, i2c.SLOW)
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end
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--get time from DS3231
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function M.getTime()
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i2c.start(id)
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