STM32F4 and F7 share the same OTG FS IP but have no USB driver in
TinyGo. This adds a full device-mode driver covering CDC, HID, and
MSC with working examples.
- OTG FS has 4 physical EPs (0–3); virtual indices 4–7 fold onto
them via physEP() so the existing machine/usb API is unchanged
- F4 bypasses VBUS sensing via GCCFG.NOVBUSSENS; F7 uses the USB
voltage regulator + GOTGCTL B-valid override instead
- STM32F7 PLL_Q changed 2→9 to produce the 48 MHz clock required
by USB/RNG/SDMMC; CK48MSEL cleared to select main PLL as source
- HID and MSC descriptors remapped at init() to physical endpoint
addresses (EP2/EP1 for HID, EP2/EP3 for MSC)
- usb-storage example replaced machine.Flash with a FAT12 RAM disk
so the host mounts without reformatting
- MSC sendCSW sets queuedBytes before state transition to fix a
missed byte-count on the status phase
Rename the "arduino" target to "arduino-uno" to better reflect the
board it represents. The "arduino" name is kept as an alias that
inherits from "arduino-uno" for backward compatibility.
- Rename targets/arduino.json to targets/arduino-uno.json
- Create targets/arduino.json as alias inheriting from arduino-uno
- Rename board_arduino.go to board_arduino_uno.go
- Update build tag from "arduino" to "arduino_uno"
- Rename corresponding example files
Signed-off-by: deadprogram <ron@hybridgroup.com>
When SPI is configured via the GPIO Matrix, SPI signal transitions set
GPIO.STATUS bits on the routed pins. With a level-triggered CPU interrupt
(line 8), the ISR re-enters continuously as long as any STATUS bit is
asserted — causing user GPIO callbacks to fire spuriously.
Switch cpuInterruptFromPin to CPU interrupt 10, which is edge-triggered
(level 1) on the Xtensa LX7. This ensures the ISR fires once per GPIO
event rather than looping while SPI is active.
Also move STATUS_W1TC clears to before callback dispatch so that new
GPIO events arriving during handler execution generate a fresh edge, and
add writeINTCLEAR(active) in handleInterrupt to properly acknowledge
edge-triggered CPU interrupt pending bits via the INTCLEAR register.
Fixes GPIO interrupts firing constantly when SPI and pin interrupts are
used together.
Signed-off-by: deadprogram <ron@hybridgroup.com>
Add support for rising, falling, and toggle edge interrupts on all
ESP32-S3 GPIO pins (0-48). The GPIO peripheral interrupt is routed
to CPU interrupt 8 via the interrupt matrix. The ISR reads both
STATUS and STATUS1 registers to cover the full 49-pin range.
Signed-off-by: deadprogram <ron@hybridgroup.com>
* begin adding ring512 implementation
* refactor to make operation driven fuzz test
* refactor USBCDC.Read to use ring512
* try txhandler separate to flush
* working USBCDC with large packets
* fix binary size
* remove comment
* documentation improvements
* machine/attiny85: add PWM support for Timer0 and Timer1
Add complete PWM implementation for ATtiny85, supporting both Timer0
and Timer1 with their respective output channels:
- Timer0: 8-bit timer for pins PB0 (OC0A) and PB1 (OC0B)
- Timer1: 8-bit high-speed timer for pins PB1 (OC1A) and PB4 (OC1B)
Timer1 provides more flexible period control with configurable top value
(OCR1C) and extended prescaler options (1-16384), making it well-suited
for LED PWM control and other applications requiring variable frequencies.
Implements full PWM interface including Configure, SetPeriod, Channel,
Set, SetInverting, Top, Counter, and Period methods.
* machine/digispark: document PWM support on pins
Add documentation to the Digispark board file indicating which pins
support PWM output:
- P0 (PB0): Timer0 channel A
- P1 (PB1): Timer0 channel B or Timer1 channel A
- P4 (PB4): Timer1 channel B
Includes package comment explaining Timer0 vs Timer1 capabilities,
with Timer1 recommended for more flexible frequency control.
* machine/attiny85: optimize PWM prescaler lookups
Replace verbose switch statements with more efficient implementations:
- SetPeriod: Use bit shift (top >>= prescaler-1) instead of 15-case
switch for dividing uint64 by power-of-2 prescaler values
- Period: Replace switch statements with compact uint16 lookup tables
for both Timer0 and Timer1, casting to uint64 only when needed
This addresses review feedback about inefficient switch-based lookups.
On AVR, this approach is significantly smaller:
- Bit shifts for uint64 division: ~34 bytes vs ~140 bytes
- uint16 tables: 22 bytes code + 32/16 bytes data vs ~140 bytes
- Total savings: ~190 bytes (68% reduction)
* examples/pwm: add digispark support and smoketest
Add digispark.go configuration for PWM example using Timer1 with pins P1 (LED) and P4. Also add digispark PWM example to GNUmakefile smoketests.
---------
See: https://github.com/tinygo-org/tinygo/issues/4314
The os package isn't particularly useful on wasm-unknown, but just like
on baremetal systems it's imported by a lot of packages so it should at
least be possible to import this package.
The machine package wasn't tested for every board. Therefore, add a new
serial-like test that also tries to import the machine package. This
should highlight potential issues in the future.
Prior to this commit, the build instructions were encoded in Makefiles
that contained GNU extensions that are unique to GNU Make and
incompatible with older implementations.
Thie commit renames all Makefiles to GNUmakefile which clearly denotes
that the file contains GNU extensions.
GNU Make actually first looks for a GNUmakefile, then makefile, THEN
Makefile so in addition to simply being more correct and portable, it
saves a few unnecessary failed attempts to open the correct build
file.
such as program changes and pitch bend. Also add error handling for invalid
parameter values such as MIDI channel. This however makes a somewhat breaking
change to the current implementation, in that we now use the typical MIDI user
system of counting MIDI channels from 1-16 instead of from 0-15 as the lower
level USB-MIDI API itself expects.
Also add constant values for continuous controller messages, rename SendCC
function, and add SysEx function.
Signed-off-by: deadprogram <ron@hybridgroup.com>
This is just support for the chip, no boards are currently supported.
However, you can use this target on a custom board.
Notes:
- This required a new runtime and machine implementation, because the
hardware is actually very different (and much nicer than older
AVRs!).
- I had to update gen-device-avr to support this chip. This also
affects the generated output of other AVRs, but I checked all chips
we support and there shouldn't be any backwards incompatible
changes.
- I did not implement peripherals like UART, I2C, SPI, etc because I
don't need them. That is left to do in the future.
You can flash these chips with only a UART and a 1kOhm resistor, which
is really nice (no special hardware needed). Here is the program I've
used for this purpose: https://pypi.org/project/pymcuprog/
machine/stm32, nrf: implement machine.Flash
Implements the machine.Flash interface using the same definition as the tinyfs BlockDevice.
This implementation covers the stm32f4, stm32l4, stm32wlx, nrf51, nrf52, and nrf528xx processors.
Replace ADCChannel.ReadTemperature() with a simple ReadTemperature
function.
Not all chips will have a temperature sensor that is read by sampling an
ADC channel. The replacement ReadTemperature is simpler and more generic
to other chip families.
This breaks chips that were relying on the previous ReadTemperature
method. I hope it won't break a lot of existing code. If it does, a
fallback can be added.
This adds a summary of each wasm example, as before it was a bit unclear
how to do so. This also fixes the callback example which was broken.
Fixes#2568
Signed-off-by: Adrian Cole <adrian@tetrate.io>
Go 1.19 started reformatting code in a way that makes it more obvious
how it will be rendered on pkg.go.dev. It gets it almost right, but not
entirely. Therefore, I had to modify some of the comments so that they
are formatted correctly.
Konstantin Sharlaimov
Jake Bailey
deadprogram
Joel Wetzell
Pat Whittingslow
Dima
Jesús Espino
Michael Smith
Yurii Soldak
Ayke van Laethem
sago35
Christian Ege
Kenneth Bell
ayan george
Marcus Sorensen
irieda
Adrian Cole