Fixes#1370
Adds a simple helper assertion to tell the user how to enable BT if it's
not enabled, instead of some odd compilation warnings about undefined
functions.
Fixes#1356
Mac and Windows have case-insensitive filesystems, so the will find
the internal (all-lowercase) "btstack.h" and not the library's "BTstack.h",
causing compilation errors.
Rename the library and header to avoid the issue.
Allow sending thigns like KEY_MUTE or KEY_SCAN_NEXT from the USB and
Bluetooth Classic keyboard libraries.
BLE requires some add'l magic, not yet discovered.
Pull in latest upstream Keyboard library changes
SDK 1.5 changed the behavior of the underlying CYW43 blob, and it seems
to block MDNS multicast by default. Manually add back the Ethernet MACs
used for MDNS multicast in IPV4 and IPV6.
Fixes#1267
It seems possible now for TCP connection _pcbs to disappear while being
processed, due to the new async context configuration. This would cause
LWIP to panic when a NULL pcb was passed in.
Check for and avoid passing in null PCBs in the ClientContext.
Undo special-casing of sys_check_timeouts wrapper
AdvancedWebServer with heavy F5-refresh and #1274 test both pass.
Fixes#1274
Move the Joystick, Keyboard, and Mouse into a base class which handles
the operation/input, and a subclass which will implement the reporting
as a HID device via USB, Bluetooth Classic, or Bluetooth Low Energy (BLE).
Reduce copies of library code and makes maintainability much better.
* Update to Pico-SDK v1.5
* Hook in pico_rand, use ioctl to set ipv6 allmulti
* Move into PicoSDK LWIP mutex, hack timer sizes
* Utilize much of the PicoSDK infrastructure for WiFi
* Add WiFi::begin(ssid, pass, bssid)
* WiFiMulti to use BSSID, make more robust
WiFiMulti will now be more aggressive and try all matching SSIDs, in order
of RSSI, using the BSSID to identify individual APs in a mesh.
Before, if the highest RSSI AP didn't connect, it would fail immediately.
Now, it will go down the list, ordered by RSSI, to attempt to get a link.
* Add Bluetooth support from Pico-SDK
Able to build and run the HID Keyboard Demo from the Arduino IDE, almost
as-is.
Will probably need to make BT configurable. Enabling BT on a plain WiFi
sketch uses 50KB of flash and 16KB of RAM even if no BT is used.
* Separate picow libs, BT through menus, example
Build normal Pico.a and 4 different options for PicoW IP/BT configuration.
Use IP=>IP/Bluetooth menu to select between options.
* CMakefile rationalization
* Move BT TLV(pairing) out of last 2 flash sectors
The pairing keys for BT are stored at the end of flash by default, but
we use the last sector of flash for EPROM and the penultimate one for
the filesystem. Overwriting those in BT could cause some real exciting
crashes down the line.
Move the store to an app-build specific address using a dummy const
array to allocate space in the application image itself.
* PicoBluetoothHID with BT Mouse, Joystick, Keyboard
Add simple Bluetooth Classic HID helper function and port the existing
USB HID devices to it. Port their examples.
* Protect BT key storage from multicore
* Add short-n-sweet Bluetooth documents
* Add Bluetooth Serial port library
* Turn off BT when the BT libraries exit
The PWMAudio lib is expecting an int16_t value but the example passes a sample cast to uint16_t
So any values from the lookup table that are negative are recast to 0 i think.
So half the sine wave in the case of the example is lost.
Implement the method used in the ESP8266 Web Server to allow user apps to hook into
the HTTP server (to support hooked WebSockets, etc._)
Add example of hook usage
Mimics the I2S/PWMAudio/Stream interface for ease of use.
* Fix non-32b DMA size transfer calculation in ABM
* Rename wasHolding to isHolding in the I2S/PWM
It is the **current** number of bits left, not the past number.
* Add commented microphone example
* Add docs
Now that we have a default parameter, need to only allow it in C++ since
default values are not part of C spec. Should not affect any users since
only legacy code is in C.
Only 4K total stack, so allocating 400 bytes for a local C string
or 600 bytes for a DHCP response is dangerous. Use static allocations
instead on the heap.
Use the PWM hardware to generate a signal suitable for filtering and
amplifying 16bps audio output.
Refactor the AudioBufferManager to allow sharing with I2S
Add example
The ring buffer worked but had issues with IRQs and the available()
procesing. Because it was a pain to debug, move to a linked list
setup where there are filled and empty buffers to work from,
simplifying the underlying logic.
Allow I2S::available() to return free writing space in OUTPUT mode
to make it saner.
* Increase default number of buffers for 32bps
Gives 2x the time between interrutps to handle I2S callbacks.
* Add setBuffers keyword
Fixes#963
The available space calculation didn't account for the fact that one
of the buffers was currently being output, causing ::available() to
be too large and ::write() to block in that case.
Other parts of the core use temp 256 byte chunks to transmit/move/operate
on data, so do the same here. Will increase effective WebServer sendFile
speeds.
SingleFileDisk allows for exporting a file from the onboard LittleFS
filesystem to a PC through an emulated FAT drive when connected. The
PC can open and copy the file, as well as delete it, but the PC has no
access to the main onboard LittleFS and no actual on-flash FAT
structures are used.
This is handy for things like data loggers. They can run connected to
USB power for some time, and then connected to a PC to dowmload the CSV
log recorded.
It's almost 2023, allow LFN (long file names) on the emulated USB disk.
Reduce the disk buffer size to 64 bytes. The buffer is statically
allocated so it's always present, even in non-USB disk mode, meaning
all apps will pay the RAM price for it. 64 bytes is slower to read
but works and saves ~1/2KB of heap for all apps.
The memcpy to unallocated memory was done in two cases:
1) The 'size' parameter was not multiple of 256.
2) The begin() was called two times and the 2nd call 'size' was greater than 1st time 'size'. (e.g. 1st size=256, 2nd size=512)
Fixes#979
Make sure to read the last byte of I2C data in the case where the IRQ happens
and the STOP signal is also asserted.
Also ensure all branches of the IRQ handler look at the same point in time
value for the IRQ status.
Random crashes, infinite loops, and other lockups were happening to the PicoW
while under high load from multiple clients.
This seems to have been due to two issues:
* The periodic sys_check_timeouts() call from an alarm/IRQ was happening while
the core was in LWIP code. LWIP is not re-entrant or multi-core/thread safe
so this is a bad thing. Some calls may not have been locked with a manual
addition of the LWIPMutex object to hit this.
* The WiFi driver supplies packet data during an interrupt. PBUF work is
legal in an interrupt, but actually calling netif->input() from an IRQ to
queue up the Ethernet packet for processing is illegal if LWIP is already
in progress.
Rearchitect the LWIP interface to fix these problems:
* Disable interrupts during malloc/etc. to avoid the possibility of the
periodic LWIP timeout check interrupting and potentially calling user
code which did a memory operation
* Wrap all used LWIP calls to note LWIP code will be executing, instead of
manually eyeballing and adding in protection in user code.
* Remove all user code LWIPMutex blocking, the wrapping takes care of it.
* When an Ethernet packet is received by interrupt and we're in LWIP code,
just throw the packet away for now. The upper layers can handle retransmit.
(A possible optimization would be to set the packet aside and add a
housekeeping portion to the LWIP wrappers to netif->input() them when safe).
* Ignore callbacks during TCP connection teardown when the ClientContext
passed from LWIP == nullptr
When moving between different modes or even WiFi.begin/ends, any setting
of the IPs will fail because the internal flag _started was not cleared.
Clear _started on a ::end call.
Fixes#884
Fixes#795
Replace all CoreMutex and Newlib mutex accesses with FreeRTOS calls
when in FreeRTOS mode. Avoid issues with hange/etc. due to priority
inversion.
No changes to normal operating mode.
Add a FreeRTOS stress test that caught the issue fixed here.
* Add HTTP-parser lib to support ESP32 WebServer
* Add WebServer from ESP32. Only supports HTTP
* Separate HTTP server from the network server
Instead of managing the WiFiServer/WiFiServerSecure in the same object
as the HTTP handling, split them into separate objects. This lets
HTTP and HTTPS servers work without templates or duplicating code.
The HTTP block just gets a `WiFiClient*` and works with that to only
do HTTP processing, while the upper object handles the appropriate
server and client types.
* Add HTTPS server
* Clean up some THandlerFunction refs
* Refactor into a template-ized WebServer/WebServerSecure
* Add DNSServer examples which need WebServer
* Fix CoreMutex infinite recursion crash
Core could crash while Serial debugging was going on and prints were
happening from LWIP/IRQ land and the main app.
* Add HTTPUpdateServer(Secure)
* Add MIME include, optimize WebServer::send(size,len)
When send()ing a large buffer, the WebServer::send() call would
actually convert that buffer into a String (i.e. duplicate it, and
potential issues with embedded \0s in binary data).
Make a simple override to send(size, len) to allow writing from the
source buffer instead.
* Fix WiFiClient::send(Stream), add FSBrowser example
* Add HTTPUpdate class to pull updates from HTTP(S)
* Increase GH runners for pulls
WiFi builds and examples are taking some serious time now
* HTTPUpdate tests build on Pico W
OTA text error messages were getting lost because they were sent in
multiple UDP packets, one per print(). Now collect the full error and
report in a single print, allowing text messages to appear in ESPOTA.
Remove the need to have a separate WiFiClient that's destroyed after
the HTTPClient. Let the object handle its own client, and pass through
any SSL requests.
Also supports the original ::begin methods which need a
WiFiClient(Secure) to be passed in and managed by the app.
According to the Arduino docs, update works just like put, but it first checks if the value is different from the current one.
This is how our put already works, so we just alias update to put and we're done.
Function added to be more compatible with the Arduino API.
Also see #778
There may be an issue in the CYW43 driver that causes a link to never be
reported as going down once it has connected, when it was disassociated or
when the wlan shuts off unexpectedly.
Work around it by clearing the internal link active in a TCP callback for
the CYW43 driver.
Reports disconnection properly now, as well as reconnection.
Fixes#762
Adds a 12K OTA stub 3rd stage bootloader, which reads new firmware
from the LittleFS filesystem and flashes on reboot.
By storing the OTA commands in a file in flash, it is possible to
recover from a power failure during OTA programming. On power
resume, the OTA block will simply re-program from the beginning.
Support cryptographic signed OTA updates, if desired. Includes
host-side signing logic via openssl.
Add PicoOTA library which encapsulates the file format for
the updater, including CRC32 checking.
Add LEAmDNS support to allow Arduino IDE discovery
Add ArduinoOTA class for IDE uploads
Add MD5Builder class
Add Updater class which supports writing and validating
cryptographically signed binaries from any source (http,
Ethernet, WiFi, Serial, etc.)
Add documentation and readmes.
* Apply @oddstr13 multicast patch to cyw43 driver
* Initial work for enabling IPv6
* Allow accessing CYW43 stats when LWIP_SYS_CHECK_MS is not set
* Use cyw43_set_allmulti to allow receiving multicast
* Add tools/libpico/build to gitignore
Co-authored-by: Odd Stråbø <oddstr13@openshell.no>
FreeRTOS SMP was updated to:
a) Move ths SYSTICK handler, which cannot be disabled and can fire
even with IRQs disabled, to RAM
b) Add a flag from the core to the SYSTICK handler to hold off on
any PendSV (task switch) calls while we are doing the idleOtherCore.
The core now sets this flag, _holdPendSV, and adds add'l FreeRTOS SMP
calls to really, really tell the OS we can't, don't, and better not
be swapped out while writing to flash.
Fixes#719
Increases the MEM_SIZE outstanding write buffer to 8K
Allows the ClientContext to attempt to send smaller buffer chunks in the
case where MEM_SIZE won't allow the full tcp_sndbuf() transfer.
Fixes#725
Simple sketches should work without modification, but some modes (listed
in the docs) are not possible to support on the Pico W with BearSSL.
Fixes#691
IPv4-only mode saves 20KB+ of flash memory.
Add some backwards compatibility with the global Arduino Ethernet
class when running in IPv4 only mode.
Fixes#687
* Speed P.IO build by not cloning 2GB of sources
* Document P.IO new option
* Add support for the WiFi chip on the Pico W board.
* USB interrupt now no longer hard coded (conflicted with the WiFi IRQ).
* Add in Pico W board to makeboards.py
* Add in GPIO and variant support
* Initialize WiFi in the Variant
* Use manual LWIP, fix size accounting
* Remove the SDK WiFi overrides
* Pulling in work done in the ESP8266 core.
* Make IPAddress support IPv6
* Build LWIP with IPv4 and IPv6 support
* Use proper MAC
* Avoid cyw_warn crash. Make macro to a comment while building
* Add WiFiServer
* Add WiFiUdp
* Move LWIP-specific support files to LWIP_Ethernet
* Add WiFi::ping (ICMP ping)
* Move ICMP echo (ping) to LWIPIntfDev
* Move hostByName to LwipIntfDev
* Add AP mode with simple DHCP server
* Add some examples and basic ESP8266 compat hacks
* Update Adafruit TinyUSB to fix crash
* Set DHCP hostname
* Make Wifi.begin() return CONNECTED with link + IP
* Return connected() on WiFi::begin
* Fix spurious TCP retransmission
* Protect LWIP from reentrancy
The Pico SDK calls "sys_check_timeouts() from inside a periodic interrupt.
This appears unsafe, as the interrupt could happen while already in the
(non-reentrant) LWIP code.
Block the interrupt from calling sys_check_timeouts by using a global flag
manually set via an RAII recursive lock.
Add interrupt protection macros around critical sections inside LWIP via
the standard defines.
These two changes should make LWIP significantly more stable and long
running.
* Support disconnecting and reconnecting WiFi
* Add WiFiServer simple example
* Update documentation
Fixes#666Fixed#665
Instead of wrapping the memory functions in the link stage, rebuild
Newlib and enable retargetable locks. Override the weak definitions
in the libc.a with our own, SDK based ones.
The wrapping utilized before catches app-level memory allocations
but misses allocations inside Newlib libc (like printf/etc.).
Each core needs its own _impure_ptr or else crashes like the one seen
in parallel printf_floats can happen. Enable it in the toolchain
build and implement a simple swapper here.
FreeRTOS SMP doesn't support Newlib's dynamic reent which is needed
to allow save MT support. Minor patch to FreeRTOS and update the
FreeRTOS variant.cpp and setup to support it.
Add plumbing to allow `Wire`, `Serial1`, `SPI1` to map to the 2nd
hardware unit for devices where the PCB layout only brings out the
2nd port.
Fix the Seeedstudio XAIO pins
Fixes#594
Rewrite the I2S code from scratch to eliminate the dependence on the
pico-extras implementation and to support I2S input as well.
8-bit, 16-bit, 24-bit, and 32-bit words are supported.
Multiple I2S ports are allowed (theoretically up to 6 because
2 DMA channels are required per port).
I2S input and I2S output are supported.
Add input example
Fixes#535Fixes#99Fixes#562
To remove compiler warning the valid core macro was modified to only check
that the core passed in was < # of total cores. Unfortunately there are
parts of the FreeRTOS code where the passed in core # is -1. The upstream
catches this and returns FALSE, but my hacked version returned TRUE. This
caused interesting memory corruption errors and crashes when the
current task block[-1] was updated.
Undo the change and fix the 1 spot where a warning happens instead.
Undo the forced compiler -O0 for port.c, it was only masking the fault.
Use low power WFE when idle.
Set PORT.C to built `-O0` always because it seems to occasinally end
up with interrupts disabled in task code, causing the SYSTICK never to
fire and killing task switching.
No need for dynamic exceptions. We don't move the execbase.
Adds code to define which pins are used, moving them from the defaults, which are the same as the only three analogue input pins, and adding comments to explain how to change them.
The original didn't give any clues about which pins were used, which isn't ideal for a beginner - it was necessary to look at the code for the library, to work that out.
The new code redundantly defines a pWS pin number (as pBCLK+1), which isn't used in the example, but is meant as a reminder to the person using it, of how to wire up WS.
Using all the work from @hfellner and others, add FreeRTOS
SMP support.
Allow idling cores through the FreeRTOS FIFO queue to
allow for file system and EEPROM support.
Make delay a weak function so FreeRTOS can override.
Add cycle count support under FreeRTOS using a PIO SM.
Use a task-based approach for handling the USB periodic work
instead of the IRQ-based one in the main core.
Set 8 prio levels so it fits in 3 bits nicely (0..7).
The PIO and state machine were hard wired, so this caused problems if they were not free. The approach used by the Servo library has been adopted so a free PIO and SM are searched.
The DMA_IRQ_0 was grabbed exclusively, but this conflicts with SPI DMA use. The interrupt is now shared, but has been allocated the highest possible priority.
Since the PDM PIO use is receive only, the PIO state machine RX FIFO's can be joined to reduce DMA interrupt load.
Keyboard class now has support for non-en_US layouts, and documentation has
been added to the Mouse class.
Thanks to @rico0260 for letting me know about the update, and for the initial PR!
The Pico HW seems to generate an interrupt on the end of every I2C
write cycle, even if the slave address wasn't actually targeted.
This would cause the onReceive method to be called with a 0-len
parameter for every write on the I2C bus.
Now, only call onReceive if there is 1 or more bytes of data available.
SdFat used to point to unnamed commit in the ESP8266SdFat repo.
Master in that repo has now been moved to that commit, so make this
core use the master branch for sanity's sake.
Leave the SPI port initted after a transaction, and when a new one comes in
check if it is the same settings we're already running. If so, do nothing.
If not, deinit and reinit. In general the settings will be identical, so
this will speed things up massively.
Fixes#392
