Calculating the DMA clock divider for PWMAudio can take a very long time
because there are 65K floating point divisions required. But most audio
will be one of a dozen sample rates, so it is possible to precalculate
the rates on the host and use a small lookup table to avoid any math at
all. Removes occasional scratching in PWMAudio when the BackgroundAudio
library changes sample rates.
Optimize AudioRequestBuffer writing when large blocks are available (i.e.
I2S writes of full MP3 or AAC frames in BackgroundAudio). Update I2S to use
the new call. Reduces 1152 calls to arb::write() to a single call/return
and optimized memcpy in that case.
Leave that to the main app instead, so we don't reset peripherals twice.
* ota: fix copy error for riscv headers
* ota: initialize bootrom bit ops and add explanation
* my attempt at adding plasma_2040 support.. cant seem to get it working to test yet though?
* Tracked+replaced files, this now works it seems!
* correct serial count
* Update pins_arduino.h
* Rudimentary Pimoroni Plasma2350 support.
* include correct files + changes needed for proper support.
also!! fixes pin definitions for the i2c on Pimoroni Plasma 2350 (tested, working) and (presumably, untested) on the Plasma RP2040 too by swapping the i2c numbers. i2c now works!!
* use correct USB PID for Plasma 2350
The audio output objects all have the same general necessary configuration
calls. Abstract them out to a generic AudioOutputBase interface class that
they will inherit from. Simplifies letting applications use different
output channels.
Should be backwards compatible with existing code.
Semihosting is handy for debugging, so allow the core to use `SerialSemi` as the
::printf port. Add menu item to the IDE to allow selection.
Add RISC-V implementation of semihost call
* Add MDNS.addServiceTxt() to SimpleMDNS
Fixes#2678
A simple mapping allows for basic service text addition even when using
SimpleMDNS and ArduinoOTA.
* Protection against duplicate services addition
* added logic so that the build.mcu value is written to a board defintion in boards.txt. This is needed for Arduino libs that use precompiled/archive libs
* move the setting for the build.mcu as recommended - to manage the different archs available on the rp2340
Adds a menu item to enable onboard profiling. This requires significant
RAM and really only makes sense on devices with PSRAM to store the state.
When the menu item is selected, allocates RAM and tracks function calls and
periodically samples the PC to generate a histogram of application usage.
The onboard gmon.out file can be written over Semihosting or
some other way to transfer to a PC for analysis.
Adds a profiling example with command lines.
Enable ARM-only semihosting mode. This mode allows applications on the
Pico to write to the OpenOCD console and read and write files on the
host system (i.e. debugging dump information, etc.)
It is not very fast because of the way it uses breakpoints on the Pico
to communicate, but it is useful in cases when you want to get a single
file off of the Pico while debugging.
Note that this **requires** a connected OpenOCD and GDB or else the
semihosting will cause a system panic.
Using pico-sdk develop branch, add in support for CYW43-based
WiFi/BT/BLE boards on the RP2350 such as the
SparkFun Thing Plus RP2350 or the Pimoroni Pico Plus 2W.
Fixes#2608
Rolls in dynamic SPI divider #2600
* Support LED digitalWrite on RP2350+CYW
Also move "special GPIO" to 64 since the Pimoroni Pico 2W uses the
RP2350B with 48 GPIOs.
* Enable CYW43_PIN_WL_DYNAMIC in IDE and P.IO
Allows calling `cyw43_set_pins_wl(cyw43_pin_array);` to redefine the
CYW43 hookup in the variant initialization.
A flush() on a packet that's already been sent should be a no-op, not
send a 0-byte UDP packet. Track when an outgoing packet is dirty and
only endPacket()/transmit it when so.
Fixes#2617
* Add SparkFun Thing Plus RP2350
* Add Thing Plus RP2350 PSRAM definition
* Remove radio from Thing Plus RP2350
Will need to add back once full radio support is added, see #2605
The RP2350 boot ROM seems to randomize memory on a HW reset, including
both CPU stacks where we normally stuff the "reset to bootloader" flag.
Update the docs and source to remove rp2040.enableDoubleResetBootloader()
on RP2350-based boards.
Fixes#2606
