Commit Graph

15 Commits

Author SHA1 Message Date
Damien George
7aeafe2ae9 extmod/modbluetooth: Add optional 4th arg to gattc_write for write mode.
This allows the user to explicitly select the behaviour of the write to the
remote peripheral.  This is needed for peripherals that have
characteristics with WRITE_NO_RESPONSE set (instead of normal WRITE).  The
function's signature is now:

    BLE.gattc_write(conn_handle, value_handle, data, mode=0)

mode=0 means write without response, while mode=1 means write with
response.  The latter was the original behaviour so this commit is a change
in behaviour of this method, and one should specify 1 as the 4th argument
to get back the old behaviour.

In the future there could be more modes supported, such as long writes.
2019-12-04 23:23:07 +11:00
Damien George
8ce69288e9 extmod/modbluetooth: Remove limit on data coming from gattc data input.
This removes the limit on data coming in from a BLE.gattc_read() request,
or a notify with payload (coming in to a central).  In both cases the data
coming in to the BLE callback is now limited only by the available data in
the ringbuf, whereas before it was capped at (default hard coded) 20 bytes.
2019-12-02 23:27:25 +11:00
Jim Mussared
438c0dc2a4 extmod/modbluetooh_nimble: Fix UUID conversion for 16 and 32 bit values. 2019-11-25 17:31:59 +11:00
Jim Mussared
2ae755d9e1 extmod/modbluetooth_nimble: Make gap_scan_stop no-op if no scan ongoing.
No need for this to throw an exception if the intent (don't be scanning) is
clear, and avoids a race with the scan duration timeout.
2019-11-25 17:27:40 +11:00
Jim Mussared
d16a27da51 extmod/modbluetooth: Add gatts_set_buffer.
- Adds an explicit way to set the size of a value's internal buffer,
  replacing `ble.gatts_write(handle, bytes(size))` (although that
  still works).
- Add an "append" mode for values, which means that remote writes
  will append to the buffer.
2019-10-29 23:09:02 +11:00
Jim Mussared
2c1f269918 extmod/modbluetooth_nimble: Use data_alloc length to truncate writes.
This allows the maximum size of a characteristic/descriptor to be
increased by locally writing to it first.
2019-10-22 14:30:23 +11:00
Jim Mussared
f34e16dbc6 extmod/modbluetooth: Persist reference to NimBLE service instances.
NimBLE doesn't actually copy this data, it requires it to stay live.
Only dereference when we register a new set of services.

Fixes #5226

This will allow incrementally adding services in the future, so
rename `reset` to `append` to make it clearer.
2019-10-22 14:30:23 +11:00
Jim Mussared
56fc3edf98 extmod/modbluetooth: Make UUID support the buffer protocol.
Internally change the representation of UUIDs to LE uint8* to simplify this.

This allows UUIDs to be easily used in BLE payloads (such as advertising).

Ref: #5186
2019-10-22 13:54:05 +11:00
Jim Mussared
ba16a22991 extmod/modbluetooth: Clear gap_advertise payload when data is empty.
Also fix default adv interval to 500ms.
2019-10-15 17:21:17 +11:00
Jim Mussared
76f474129e extmod/modbluetooth: Use us instead of ms for advertising interval.
This is to more accurately match the BLE spec, where intervals are
configured in units of channel hop time (625us). When it was
specified in ms, not all "valid" intervals were able to be
specified.

Now that we're also allowing configuration of scan interval, this
commit updates advertising to match.
2019-10-11 13:51:07 +11:00
Jim Mussared
b65cc387cd extmod/modbluetooth: Allow config of scan interval/window.
This adds two additional optional kwargs to `gap_scan()`:
  - `interval_us`: How long between scans.
  - `window_us`: How long to scan for during a scan.

The default with NimBLE is a 11.25ms window with a 1.28s interval.

Changing these parameters is important for detecting low-frequency
advertisements (e.g. beacons).

Note: these params are in microseconds, not milliseconds in order
to allow the 625us granularity offered by the spec.
2019-10-11 13:51:07 +11:00
Jim Mussared
902bb4ceae stm32: Extract port-specific Nimble implementation.
On other ports (e.g. ESP32) they provide a complete Nimble implementation
(i.e. we don't need to use the code in extmod/nimble). This change
extracts out the bits that we don't need to use in other ports:
 - malloc/free/realloc for Nimble memory.
 - pendsv poll handler
 - depowering the cywbt

Also cleans up the root pointer management.
2019-10-08 14:40:35 +11:00
Andrew Leech
eb1b6858a2 extmod/modbluetooth: Allow MP_BLUETOOTH_MAX_ATTR_SIZE in board config. 2019-10-01 09:51:02 +10:00
Andrew Leech
5dc592d117 extmod/modbluetooth_nimble: Use random addr if public isn't available. 2019-10-01 09:51:02 +10:00
Jim Mussared
497dae45e7 extmod/modbluetooth_nimble: Implement modbluetooth API with Nimble. 2019-10-01 09:51:02 +10:00