Commit Graph

405 Commits

Author SHA1 Message Date
Jeff Epler
ef459326cb nrf: PWMAudioOut: coding style 2019-10-12 13:57:31 +09:00
Scott Shawcroft
b5a9ed3688
Merge pull request #2161 from jepler/nrf-analog-reference
nRF: Change analog reference voltage
2019-09-17 09:41:52 -07:00
jepler
d39c85e3f5 nRF: Change analog reference to VCC(/4)
@ladyada says:
"having this be adjustable (reference) would be ideal cause you can get
absolute voltages but for now, VCC/4 + 4x matches every other chip :)"

... and indeed doing it this way happens to give a much more steady
reading when using a VCC-referenced resistance, and so many of the simple
things you'd wire up are actually VCC-referenced anyway.
2019-09-16 21:43:07 -05:00
Jeff Epler
c56186da8c nRF: Change analog reference voltage
Datasheet reading explains one reason why readings might have been 10% low.
2019-09-16 18:35:48 -05:00
jepler
df48312ce7 nRF: PWMOut: At deinit, make pin available again
Closes: #2146
2019-09-11 20:09:38 -05:00
jepler
7b9dfc9952 nrf: i2s: tune audio buffering
.. based on some tasks I found that caused stuttering:

 # Test SD and printing
 while True: os.listdir('.')

 # Test bulk I/O
 while True: len(open('somefile.wav', 'rb').read())

Each of these tasks *WAS* worse and I am improving them in a separate
PR by adding RUN_BACKGROUND_TASKS to them.
2019-09-09 20:13:12 -05:00
jepler
c66f5a8536 nrf: i2s: rewrite without 'goto' 2019-09-09 19:26:18 -05:00
jepler
fe9605a6a3 nrf: i2s: Comment this slightly tricksy code 2019-09-09 19:25:52 -05:00
jepler
ccf08aa3df nrf: I2SOut: deal more gracefully with errors from the sample 2019-09-08 21:59:07 -05:00
jepler
f38ee42874 nrf: Add i2s audio output
Testing performed: I used a Particle Xenon with a HDA1334 I2S DAC.
I played a variety of mono 16-bit samples at 11025 and 22050Hz nominal
bit rates.  With this setup, all the 11025Hz samples sound good.
I tested play, pause,  and loop functionality.

During some runs with 22050Hz samples, there were glitches.  However,
these may have only occurred during runs where I had set breakpoints
and watchpoints in gdb.

I also tested with a MAX98357A I2S amplifier.  On this device, everything
sounded "scratchy".  I was powering it from 5V and the 5V rail seemed
steady, so I don't have an explanation for this.  However, I haven't
tried it with a SAMD board.
2019-09-08 16:46:35 -05:00
Dan Halbert
7a64af9280 rename bleio module to _bleio 2019-08-29 18:44:27 -04:00
Dan Halbert
b11b7916fd address minor issues: typos, make translate, and sphinx 2019-08-29 17:58:21 -04:00
Dan Halbert
f17059b10b another API rework: less abstraction leakage 2019-08-28 23:15:22 -04:00
Dan Halbert
19c59b41ed bleio: API change to create and connect related objects simulatenously: no orphan bleio objects 2019-08-28 16:15:09 -04:00
Dan Halbert
a72bcab0fd Merge remote-tracking branch 'adafruit/master' into bleio-api-revamp 2019-08-28 16:09:18 -04:00
Dan Halbert
0364f1dc85 remove some debugging prints 2019-08-26 08:17:59 -04:00
Dan Halbert
76446f634b BLE HID WIP: works everywhere except iOS; fixed a bunch of bugs; pretend bonding 2019-08-25 21:38:13 -04:00
Scott Shawcroft
7324b70a7c
Rework based on Dan's review 2019-08-23 15:27:21 -07:00
Scott Shawcroft
2497cbe186
Fix nrf builds 2019-08-22 14:23:33 -07:00
Benny Meisels
d37dd4d758
Updated ParallelBus implementation in nrf port 2019-08-22 14:08:33 -07:00
Dan Halbert
7cc15e56c8 make translate 2019-08-22 15:20:23 -04:00
Dan Halbert
0b7291d767 fix default crystal value; fix include order 2019-08-22 09:01:05 -04:00
Dan Halbert
d94023e9b3 Fix CPBlue LFCLKSRC; CPB has no status neopixel 2019-08-22 01:04:00 -04:00
Dan Halbert
e00696de7f merge from upstream and make translate 2019-08-20 13:06:23 -04:00
Dan Halbert
e3dc5e3a66 Merge remote-tracking branch 'adafruit/master' into run-background-tasks
Restore dependencies indicated by indentation in circuitpy_mpconfig.h.
2019-08-19 12:41:20 -04:00
Jeff Epler
26a05d01dc Merge remote-tracking branch 'origin/master' into nrf-pdm-audioin 2019-08-18 21:30:14 -05:00
Jeff Epler
912fd7759d nrf: PDMIn: Implement
So far, this supports only 16kHz and 16-bit samples with a fixed gain.
This is enough to support the basic functionality of e.g., sensing
ambient audio levels.
2019-08-18 15:58:04 -05:00
Jeff Epler
79f8a85786 nrf: stub out audiobusio.PDMIn, audiobusio.I2SOut 2019-08-18 15:55:57 -05:00
Dan Halbert
e2a4c76a37 make nrf touchio be generic: now available for SAMD51 too 2019-08-18 08:44:10 -04:00
Dan Halbert
630c92392a address review comments; avoid calling common_hal_bleio_device... routines from shared-bindings 2019-08-16 15:18:53 -04:00
Jeff Epler
11dd3a260e nrf: Use RUN_BACKGROUND_TASKS 2019-08-11 08:53:02 -05:00
Dan Halbert
1570ef2dd4 specifying attribute length; fix up value setting 2019-08-07 23:49:09 -04:00
Dan Halbert
d047b73a9c fix newly-introduced bugs; UART client/server working again 2019-08-07 11:10:21 -04:00
Dan Halbert
d74c8b9425 WIP: more Descriptor work; refactor gattc/gatts read/write 2019-08-06 22:55:25 -04:00
Dan Halbert
243334da75 Merge remote-tracking branch 'adafruit/master' into ble-pairing 2019-08-05 23:06:24 -04:00
Scott Shawcroft
b675a27e16
Merge pull request #2000 from jepler/nrf-pwm-audio
Implement PWM audio out for the nrf port
2019-08-05 17:26:27 -07:00
Dan Halbert
b67d04a5b1 Merge remote-tracking branch 'adafruit/master' into ble-pairing 2019-08-05 16:35:44 -04:00
Jeff Epler
77bc1ba03e nrf: PWMAudioOut: Remove the need to wait in "pause"
The original formulation was because I saw the need to avoid a transition
from playing to stopped exactly when a resume was taking place.  However,
@tannewt was concerned about this pause causing trouble, because it could
be relatively lengthy (several ms even in a typical case).

After reflection, I've convinced myself that updating the registers
in this order in resume avoids a window where a "stopped" event can
be missed as long as the shortcut is updated first.

Testing re-performed: pause/resume testing of looped RawSample and
WaveFile audio sources.
2019-08-03 08:19:25 -05:00
Dan Halbert
7ce3776b80 WIP: rework of Characteristic properties; enhance Descriptor; not tested 2019-08-02 17:57:31 -04:00
jepler
34e2bab96a nrf: Implement RUNMODE_BOOTLOADER and RUNMODE_SAFE_MODE 2019-08-01 18:53:07 -05:00
Jeff Epler
76f65ac694 Implement play/pause
.. and also incidentally fix a problem where a RawSample could only
be looped 131070 times.
2019-07-31 20:02:56 -05:00
Dan Halbert
91d791afd0 cleanup adapter.address; add uniquish suffix to BLE device name 2019-07-31 00:30:24 -04:00
Dan Halbert
83129b8c63 BLE: peripheral client pairing (not yet bonding); fix time doc formatting 2019-07-30 14:26:26 -04:00
Jeff Epler
b72352949b PWM audio: Rename AudioOut -> PWMAudioOut, _audioio_ -> _audiopwmio_ 2019-07-29 18:39:00 -04:00
Dan Halbert
28ca05ccdc allow discovery from central or peripheral 2019-07-27 13:22:15 -04:00
Jeff Epler
a183425e00 ports/nrf: Implement audioio.AudioOut using PWM
This implements AudioOut, with known caveats:
 * pause/resume are not yet implemented (this is just a bug)
 * at best, the sample fidelity is 8 bits (this is a hardware limitation)

Testing performed:

My test system is a Particle Xenon with a PAM8302 op-amp
https://www.adafruit.com/product/2130 and 8-ohm speaker.  There's no
analog filtering between the Xenon's PWM pin and the "A+" input of
the amplifier; the "A-" pin is disconnected.  It is powered from
VUSB.

I used pin D4, which is *NOT* listed as a low-speed-only pin, but
the code does NOT switch the pin to high drive.  This is related to
an open issue for general inability to set drive level for pins
being used by a "special function" on nrf:
https://github.com/adafruit/circuitpython/issues/1270

Nothing about the code I've written should limit the usable pins.

All samples I played were 16-bit, generally monophonic at 11025Hz
and 22050Hz from the Debian LibreOffice package.
2019-07-26 07:57:11 -05:00
Jeff Epler
2bc704fe07 ports/nrf: factor out routines for allocating, freeing pwm channels 2019-07-26 07:52:37 -05:00
Scott Shawcroft
8ec2d6ce49
Merge pull request #2007 from hierophect/F4xx-port-setup
Add STM32 Discovery F412ZG and F411RE support
2019-07-24 18:49:48 -07:00
Hierophect
58630a844a Add feature conditionals and clean up 2019-07-22 12:58:28 -04:00
Scott Shawcroft
6797ec6ed3
Add support for grayscale displays that are < 8 bit depth.
This also improves Palette so it stores the original RGB888 colors.

Lastly, it adds I2CDisplay as a display bus to talk over I2C. Particularly
useful for the SSD1306.

Fixes #1828. Fixes #1956
2019-07-19 16:06:11 -07:00
Hierophect
43e8a4110f Add missing files for DigitalIO 2019-07-17 14:18:01 -04:00
Dan Halbert
364ee62d10 Address review comments. 2019-07-16 19:53:36 -04:00
Dan Halbert
1cf8a3e8d8 Merge remote-tracking branch 'adafruit/master' into ble-scanner 2019-07-11 18:42:16 -04:00
Scott Shawcroft
6fad383367
Merge pull request #1925 from C47D/rgb_status
Initial support for RGB led as Status indicator, fixes #1382
2019-07-09 10:31:34 -07:00
Dan Halbert
6a001786a9 merge from master 2019-07-09 08:58:49 -04:00
Dan Halbert
118b26b335 UARTClient now works both directions 2019-07-09 00:21:46 -04:00
Dan Halbert
09ddff8df1 WIP: Need descriptors for Central CCCD discovery; not done yet 2019-07-07 00:07:47 -04:00
Scott Shawcroft
5610e05b8c
Fix up nrf so that it is initialized properly. Also, do not reset
it's pins.
2019-07-06 12:48:16 -07:00
iot49
6e5d70fa19 changed type of receiver_buffer_size to uint16_t 2019-07-03 12:02:01 -07:00
Dan Halbert
bf8a35b2f8 WIP: CharacteristicBuffer for Central; not working: need to set remote Characteristic Service 2019-07-02 22:34:54 -04:00
Dan Halbert
6ea01ea9b0 Central is connecting; characteristics can be read and written 2019-06-29 00:20:06 -04:00
Dan Halbert
140904ec84 getting Scanner to work 2019-06-22 22:10:15 -04:00
Dan Halbert
4881e1ff55 WIP: Central compiles; now will test 2019-06-21 18:04:04 -04:00
Dan Halbert
23bd861c9a nrf: fix neopixel_write pwm buf size calc 2019-06-20 18:02:14 -04:00
Dan Halbert
24ac1fdcab WIP: backup only; not compiled 2019-06-19 21:54:28 -04:00
Dan Halbert
a1b5d800f3 Update copyrights; get ready for Central 2019-06-19 10:42:36 -04:00
Dan Halbert
35b9191857 Don't operate directly on bleio objects in shared-bindings: use common_hal
routines instead. Changes made but not yet tested.
2019-06-18 23:46:20 -04:00
Dan Halbert
bed6d43a76 merge from upstream; WIP redo Address; no more AddressType 2019-06-13 21:55:07 -04:00
Dan Halbert
1905d90eaa Make advertising data buffers long-lived 2019-06-05 20:08:53 -04:00
Dan Halbert
613e12f99f Replace Broadcaster with enhanced Peripheral 2019-06-03 20:40:05 -04:00
Dan Halbert
63ac37946d 1. Remove advertising data construction in C: it's all done in Python now
2. Add scan response capability to advertising.
2019-06-02 23:21:30 -04:00
Dan Halbert
12f1d9d30c fix advertisement length check; add Service.secondary attribute 2019-05-31 18:03:05 -04:00
Dan Halbert
6cec81bcb5 Need to enable ble before scanning 2019-05-23 22:05:16 -04:00
Dan Halbert
1639354e5f Scanner working, but not very first time 2019-05-23 16:07:54 -04:00
Dan Halbert
15b7946fc4 Off-by-one error for usage of MAX_TX_IN_PROGRESS 2019-04-22 22:07:48 -04:00
Nick Moore
9c42a72275 Fix up single-byte access to nvm.ByteArray 2019-04-16 14:53:44 +10:00
Nick Moore
83dad37562 Fixups for adafruit/circuitpython#1042 2019-04-16 14:53:44 +10:00
Nick Moore
02dd32da60 Make some space for NVM adafruit/circuitpython#1042 2019-04-16 14:53:44 +10:00
Nick Moore
66e8ceafad switch nvm.ByteArray to use new nrf_nvm_safe_flash_page_write
adafruit/circuitpython#1610
2019-04-16 14:53:44 +10:00
Nick Moore
d0e5af3b09 Working flash pages for nvm.ByteArray adafruit/circuitpython#1042
import microcontroller

def dump(n = microcontroller.nvm):
    for i in range(0,len(n)):
        print ("%02X " % n[i], end="")
        if i % 16 == 15: print('')

microcontroller.nvm[0:4096] = bytes([1,2,3,4,5,6,7,8]) * 512
microcontroller.nvm[4096:8192] = bytes([16,17,18,19]) * 1024
microcontroller.nvm[4090:4101] = b'thisisatest'
microcontroller.nvm[100:105] = b'hello'
microcontroller.nvm[8000:8007] = b'goodbye'
dump()
2019-04-16 14:53:44 +10:00
Nick Moore
933500c448 nvm.ByteArray reads & writes but no sensible erase yet adafruit/circuitpython#1042 2019-04-16 14:53:44 +10:00
Nick Moore
df89156f2f Start on nRF nvm.ByteArray adafruit/circuitpython#1042 (doesn't do anything yet) 2019-04-16 14:53:44 +10:00
Scott Shawcroft
254d0a53ac
Revert "nrf nvm: touchups to nickzoic PR #1768" 2019-04-15 18:50:33 -07:00
Dan Halbert
864910559b fix subscripting 2019-04-10 21:41:55 -04:00
Nick Moore
18908c21f7 Fixups for adafruit/circuitpython#1042 2019-04-09 12:53:11 +10:00
Nick Moore
fdaff00c78 Make some space for NVM adafruit/circuitpython#1042 2019-04-09 10:56:53 +10:00
Nick Moore
bc92441803 switch nvm.ByteArray to use new nrf_nvm_safe_flash_page_write
adafruit/circuitpython#1610
2019-04-09 10:55:39 +10:00
Nick Moore
8e7fee2246 Working flash pages for nvm.ByteArray adafruit/circuitpython#1042
import microcontroller

def dump(n = microcontroller.nvm):
    for i in range(0,len(n)):
        print ("%02X " % n[i], end="")
        if i % 16 == 15: print('')

microcontroller.nvm[0:4096] = bytes([1,2,3,4,5,6,7,8]) * 512
microcontroller.nvm[4096:8192] = bytes([16,17,18,19]) * 1024
microcontroller.nvm[4090:4101] = b'thisisatest'
microcontroller.nvm[100:105] = b'hello'
microcontroller.nvm[8000:8007] = b'goodbye'
dump()
2019-04-09 10:55:39 +10:00
Nick Moore
492431a694 nvm.ByteArray reads & writes but no sensible erase yet adafruit/circuitpython#1042 2019-04-09 10:54:11 +10:00
Nick Moore
f8e5e2da64 Start on nRF nvm.ByteArray adafruit/circuitpython#1042 (doesn't do anything yet) 2019-04-09 10:54:11 +10:00
Scott Shawcroft
049b9ca094
Remove terse TODOs 2019-04-08 14:46:45 -07:00
Radomir Dopieralski
8323721232 Stop hard-coding SPI frequency in FourWire
Instead remember and use the frequency, polarity and phase that was
set when the bus was first created.
2019-04-06 15:15:29 +02:00
Nick Moore
781d301bb6 Remove unnecessary MP_WEAK declarations 2019-04-02 13:33:22 +11:00
Nick Moore
94bda3bde1 Change nRF RTC implementation to use RTC2 #1046
(to avoid interference with Bluetooth Softdevice. See
https://github.com/adafruit/circuitpython/pull/1534#issuecomment-478776240
with thanks to @bboser for pointing it out)
2019-04-02 13:28:22 +11:00
Nick Moore
6afe23d0b0 There isn't really a good way to calibrate this RTC adafruit/circuitpython#1046 2019-04-02 13:28:03 +11:00
Nick Moore
6206fa9a82 adafruit/circuitpython#1046 handle overflows in the RTC counter 2019-04-02 13:27:45 +11:00
Nick Moore
f846fa109e enable NRFX RTC adafruit/circuitpython#1046 2019-04-02 13:27:28 +11:00
Nick Moore
f88f9fd748 more fake RTC code ... adafruit/circuitpython#1046
(works if MP_WEAK common_hal_rtc_get_time is removed)
2019-04-02 13:27:13 +11:00
Nick Moore
4a5c52fbd6 starting on #1046 rtc for nRF 2019-04-02 13:27:00 +11:00
Dan Halbert
0653bca323
Revert "Circuitpython nickzoic 1046 nrf rtc" 2019-03-29 16:41:29 -04:00
Nick Moore
71622a4515 There isn't really a good way to calibrate this RTC adafruit/circuitpython#1046 2019-03-28 09:50:09 +11:00
Nick Moore
28254def0b adafruit/circuitpython#1046 handle overflows in the RTC counter 2019-03-28 09:50:09 +11:00
Nick Moore
b09d2c3c62 enable NRFX RTC adafruit/circuitpython#1046 2019-03-28 09:50:09 +11:00
Nick Moore
69cf33e6a1 more fake RTC code ... adafruit/circuitpython#1046
(works if MP_WEAK common_hal_rtc_get_time is removed)
2019-03-28 09:50:09 +11:00
Nick Moore
77f307c642 starting on #1046 rtc for nRF 2019-03-28 09:50:09 +11:00
Radomir Dopieralski
f440e41819 Really fix the error messages in bleio, this time 2019-03-25 14:04:50 +01:00
Radomir Dopieralski
bb10a8aaa1 Fix error messages in bleio 2019-03-25 09:19:48 +01:00
Dan Halbert
fe555a4098 Allow NFC pins to be used for other purposes. 2019-03-21 11:22:58 -04:00
Dan Halbert
99da3b9646 Use critical section, not lock, in CharacteristicBuffer; use a root pointer for ble_drv list 2019-02-21 00:19:31 -05:00
Dan Halbert
a345ef28f2 finish Makefile refactoring; nrf builds work 2019-02-15 18:55:10 -05:00
Dan Halbert
ab4194f752 don't allocate DMA buffer as long-lived 2019-02-13 19:49:57 -05:00
Dan Halbert
e92d90ce9c Add second UARTE to busio.UART. Init uarts on startup. 2019-02-12 22:34:05 -05:00
Scott Shawcroft
37b9cd5974
Merge pull request #1521 from nickzoic/circuitpython-nickzoic-1045-nrf-rotaryio
Circuitpython nickzoic 1045 nrf rotaryio
2019-02-07 10:38:20 -08:00
Nick Moore
b9db977a2d Change pin mode to pullup for adafruit/circuitpython#1045 2019-02-07 09:47:56 +11:00
Nick Moore
a7c349bc6e Add quarter-click logic to adafruit/circuitpython#1045 2019-02-05 16:41:33 +11:00
Nick Moore
95454ecde0 useful output from rotaryio adafruit/circuitpython#1045 2019-02-05 16:41:33 +11:00
Nick Moore
21eb7e8e64 GPIOTE handlers for rotaryio.IncrementalEncoder adafruit/circuitpython#1045 2019-02-05 14:15:13 +11:00
Nick Moore
ee21cc163f Start on rotaryio.IncrementalEncoder adafruit/circuitpython#1045 (does nothing yet!) 2019-02-05 14:15:03 +11:00
Scott Shawcroft
ec03887040
Fix hallowing and nrf builds 2019-01-31 11:42:15 -08:00
hathach
164e1e2341 re-init usb hardware when enable/disable SD 2019-01-30 14:13:07 +07:00
Scott Shawcroft
765d877dfa
Merge pull request #1499 from nickzoic/nickzoic/circuitpython-nrf-touchin-1048
Nickzoic/circuitpython nrf touchin 1048
2019-01-28 00:22:34 -08:00
Nick Moore
294b026aca Automatically set a default threshold for touchio.TouchIn channels 2019-01-28 18:22:57 +11:00
Nick Moore
539aaf08b5 speed up measurement loop 2019-01-27 21:54:59 +11:00
Nick Moore
4a093294ac hugely simplified version of the touchio.TouchIn.get_raw_reading code (adafruit/circuitpython#1048) 2019-01-27 15:08:03 +11:00
Dan Halbert
7998a7696d also handle BLE_GATTS_EVT_SYS_ATTR_MISSING: fixes Android: 2019-01-23 22:12:38 -05:00
Dan Halbert
b1f1bb1389 support BLE_GAP_EVT_DATA_LENGTH_UPDATE_REQUEST, sent by newer devices 2019-01-23 21:07:23 -05:00
Dan Halbert
e170e03f8c Merge remote-tracking branch 'adafruit/master' into bleio2 2019-01-21 20:38:26 -05:00
Dan Halbert
28cfd8a513 CharacteristicBuffer: make it be a stream class; add locking 2019-01-19 19:45:35 -05:00
Scott Shawcroft
edc8383e22
Improvements thanks to danh's review 2019-01-18 16:37:06 -08:00
Scott Shawcroft
fddc98858a
fix nonetype handling and nrf never reset 2019-01-17 18:51:40 -08:00
Scott Shawcroft
6404aaf411
Fix up nrf and using board.SPI in FourWire 2019-01-17 18:19:07 -08:00
Scott Shawcroft
760bd8d8a4
share fourwire and make nrf compile 2019-01-17 15:15:59 -08:00
Dan Halbert
50ee5ef24c merge translations; add bleio comments; fix minor sphinx issues in midi 2019-01-10 21:12:17 -05:00
hathach
f366e3feea Merge branch 'master' into nrf52_pulsein 2019-01-09 20:39:35 +07:00
hathach
cfc4c8cbfa
minor clean up 2019-01-09 15:43:54 +07:00
hathach
db82160eef
fix pulsein incorrect compute 2019-01-09 15:15:30 +07:00
Dan Halbert
13d607698e m_tx_in_progress might underflow (check on this) 2019-01-08 16:37:14 -05:00
Dan Halbert
50641c4152 remove debugging printf's 2019-01-08 15:52:21 -05:00
Dan Halbert
f66f55b4ed add CharacteristicBuffer; UART seems to work! 2019-01-07 22:46:20 -05:00
hathach
215008f78c
clean up neopixel write !! 2019-01-08 00:21:31 +07:00
Dan Halbert
a77b2363ef evt handler list bugs; unique evt handler names; remove uuid128_reference 2019-01-03 21:42:42 -05:00
Dan Halbert
8dea6f53bb forgot to store data when reading a gatts value 2019-01-03 14:16:41 -05:00
Dan Halbert
87c6f33bcc Broadcaster now takes whole packet. Also should be scannable 2019-01-01 14:11:59 -05:00
Dan Halbert
b6b5ed9c89 Remove nRF52832 support 2018-12-30 22:49:20 -05:00
Dan Halbert
1dc3957e72 LocalPeripheral is now Peripheral; more work on basic GATTS support; UART not working yet 2018-12-30 22:33:49 -05:00
Dan Halbert
ef39e72c7c free event handlers on reset; fix typo in Broadcaster 2018-12-29 13:55:10 -05:00
Dan Halbert
145e110915 Merge remote-tracking branch 'adafruit/master' into bleio-rev 2018-12-29 00:00:39 -05:00
Dan Halbert
4d1f0ec07b Add Broadcaster. Reset correctly on reload. 2018-12-28 23:34:23 -05:00
hathach
6b0d93cea3
correct i2c max len 2018-12-28 21:14:27 +07:00
hathach
a4ee80832a
fix #1422 correct i2c max xfer len (size in bits) 2018-12-28 16:30:11 +07:00