unleashed-firmware/documentation/js/js_gpio.md

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[FL-3893] JS modules (#3841) * feat: backport js_gpio from unleashed * feat: backport js_keyboard, TextInputModel::minimum_length from unleashed * fix: api version inconsistency * style: js_gpio * build: fix submodule ._ . * refactor: js_gpio * docs: type declarations for gpio * feat: gpio interrupts * fix: js_gpio freeing, resetting and minor stylistic changes * style: js_gpio * style: mlib array, fixme's * feat: js_gpio adc * feat: js_event_loop * docs: js_event_loop * feat: js_event_loop subscription cancellation * feat: js_event_loop + js_gpio integration * fix: js_event_loop memory leak * feat: stop event loop on back button * test: js: basic, math, event_loop * feat: js_event_loop queue * feat: js linkage to previously loaded plugins * build: fix ci errors * feat: js module ordered teardown * feat: js_gui_defer_free * feat: basic hourglass view * style: JS ASS (Argument Schema for Scripts) * fix: js_event_loop mem leaks and lifetime problems * fix: crashing test and pvs false positives * feat: mjs custom obj destructors, gui submenu view * refactor: yank js_gui_defer_free (yuck) * refactor: maybe_unsubscribe * empty_screen, docs, typing fix-ups * docs: navigation event & demo * feat: submenu setHeader * feat: text_input * feat: text_box * docs: text_box availability * ci: silence irrelevant pvs low priority warning * style: use furistring * style: _get_at -> _safe_get * fix: built-in module name assignment * feat: js_dialog; refactor, optimize: js_gui * docs: js_gui * ci: silence pvs warning: Memory allocation is infallible * style: fix storage spelling * feat: foreign pointer signature checks * feat: js_storage * docs: js_storage * fix: my unit test was breaking other tests ;_; * ci: fix ci? * Make doxygen happy * docs: flipper, math, notification, global * style: review suggestions * style: review fixups * fix: badusb demo script * docs: badusb * ci: add nofl * ci: make linter happy * Bump api version Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2024-10-14 21:42:11 +03:00
# js_gpio {#js_gpio}
# GPIO module
```js
let eventLoop = require("event_loop");
let gpio = require("gpio");
```
This module depends on the `event_loop` module, so it _must_ only be imported
after `event_loop` is imported.
# Example
```js
let eventLoop = require("event_loop");
let gpio = require("gpio");
let led = gpio.get("pc3");
led.init({ direction: "out", outMode: "push_pull" });
led.write(true);
delay(1000);
led.write(false);
delay(1000);
```
# API reference
## `get`
Gets a `Pin` object that can be used to manage a pin.
### Parameters
- `pin`: pin identifier (examples: `"pc3"`, `7`, `"pa6"`, `3`)
### Returns
A `Pin` object
## `Pin` object
### `Pin.init()`
Configures a pin
#### Parameters
- `mode`: `Mode` object:
- `direction` (required): either `"in"` or `"out"`
- `outMode` (required for `direction: "out"`): either `"open_drain"` or
`"push_pull"`
- `inMode` (required for `direction: "in"`): either `"analog"`,
`"plain_digital"`, `"interrupt"` or `"event"`
- `edge` (required for `inMode: "interrupt"` or `"event"`): either
`"rising"`, `"falling"` or `"both"`
- `pull` (optional): either `"up"`, `"down"` or unset
### `Pin.write()`
Writes a digital value to a pin configured with `direction: "out"`
#### Parameters
- `value`: boolean logic level to write
### `Pin.read()`
Reads a digital value from a pin configured with `direction: "in"` and any
`inMode` except `"analog"`
#### Returns
Boolean logic level
### `Pin.readAnalog()`
[FL-3893] JS modules (#3841) * feat: backport js_gpio from unleashed * feat: backport js_keyboard, TextInputModel::minimum_length from unleashed * fix: api version inconsistency * style: js_gpio * build: fix submodule ._ . * refactor: js_gpio * docs: type declarations for gpio * feat: gpio interrupts * fix: js_gpio freeing, resetting and minor stylistic changes * style: js_gpio * style: mlib array, fixme's * feat: js_gpio adc * feat: js_event_loop * docs: js_event_loop * feat: js_event_loop subscription cancellation * feat: js_event_loop + js_gpio integration * fix: js_event_loop memory leak * feat: stop event loop on back button * test: js: basic, math, event_loop * feat: js_event_loop queue * feat: js linkage to previously loaded plugins * build: fix ci errors * feat: js module ordered teardown * feat: js_gui_defer_free * feat: basic hourglass view * style: JS ASS (Argument Schema for Scripts) * fix: js_event_loop mem leaks and lifetime problems * fix: crashing test and pvs false positives * feat: mjs custom obj destructors, gui submenu view * refactor: yank js_gui_defer_free (yuck) * refactor: maybe_unsubscribe * empty_screen, docs, typing fix-ups * docs: navigation event & demo * feat: submenu setHeader * feat: text_input * feat: text_box * docs: text_box availability * ci: silence irrelevant pvs low priority warning * style: use furistring * style: _get_at -> _safe_get * fix: built-in module name assignment * feat: js_dialog; refactor, optimize: js_gui * docs: js_gui * ci: silence pvs warning: Memory allocation is infallible * style: fix storage spelling * feat: foreign pointer signature checks * feat: js_storage * docs: js_storage * fix: my unit test was breaking other tests ;_; * ci: fix ci? * Make doxygen happy * docs: flipper, math, notification, global * style: review suggestions * style: review fixups * fix: badusb demo script * docs: badusb * ci: add nofl * ci: make linter happy * Bump api version Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2024-10-14 21:42:11 +03:00
Reads an analog voltage level in millivolts from a pin configured with
`direction: "in"` and `inMode: "analog"`
#### Returns
Voltage on pin in millivolts
### `Pin.interrupt()`
Attaches an interrupt to a pin configured with `direction: "in"` and
`inMode: "interrupt"` or `"event"`
#### Returns
An event loop `Contract` object that identifies the interrupt event source. The
event does not produce any extra data.