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Author SHA1 Message Date
Jan Niehusmann bac6714f09
Use volatile register access for gpio interrupts (#170) 
* Use volatile register access for gpio interrupts

* Provide functions for atomic register updates

* Use atomic register access functions in pio.rs

* Improve doc comments

* Limit visibility of atomic register access functions

Also remove write_xor for now, as it's not yet used anywhere
 2021-10-22 23:30:30 +11:00
Wilfried Chauveau 0eb65ee99b
Add PIO features required for PIO as I2C support (#179) 
* Implements methods to allow presetting the pin state & direction

Enabling those methods allows to save a few valuable instructions
in the PIO's memory.

* Use IntoIterator rather than Iterator.

* Use proper types instead of bool to be more idiomatic.

* Change set_pindirs_with_mask to a more idiomatic rust approach.

* Update pio_proc_blink with new set_pindirs_with_iter

* Force reset on startup to guaranty consistency with type-states.

* Expose more accessors to allow more advanced driver to be implemented.

* Add the ability to restart the state machine from its wrap point.

This method also clears the ISR/OSR to give the state machine a clean
restart.

* Add a comment about the impact of autopull on OUT & PULL instructions

* Fix broken internal doc reference & add an important note on Tx<SM>::has_stalled

* rename block methods to register_block.

This change is made to avoid confusion with "block" as a verb.
 2021-10-22 22:09:10 +11:00
Wilfried Chauveau 2eb7923ebe
Implements methods to allow presetting the pin state & direction (#167) 
* Implements methods to allow presetting the pin state & direction

Enabling those methods allows to save a few valuable instructions
in the PIO's memory.

* Update pio_proc_blink with new set_pindirs
 2021-10-22 21:13:22 +11:00
Jonathan Pallant (42 Technology) e48323c983 Ah, missed one after the rebase. 2021-10-18 10:58:38 +01:00
Jonathan Pallant (42 Technology) 8e66ddcfb1 Switch to new rp2040-boot2 crate. 2021-10-18 10:53:17 +01:00
Rich Lane c8bb2e43c7 spi: support zero post-divide 
This allows you to use a 62.5 MHz SPI baud rate assuming the default 125
MHz peripheral clock. It would previously crash due to a division by
zero.
 2021-10-17 21:38:53 +11:00
Jonathan Pallant (42 Technology) 6a4a4fd247 Formatting. 2021-10-11 16:41:51 +01:00
Jonathan Pallant (42 Technology) 74ea262f65 Cleaning up the comment summaries. 2021-10-11 16:40:23 +01:00
Jonathan Pallant (42 Technology) 2423e42eb9 Clean up comments. 2021-10-11 16:39:12 +01:00
Jonathan Pallant (42 Technology) 5c55af76d2 Typo 2021-10-11 16:37:50 +01:00
Jonathan Pallant (42 Technology) e1afb70bd2 Moved float and double functions into modules. 
Makes the docs cleaner.
 2021-10-11 16:37:16 +01:00
Jonathan Pallant (42 Technology) ae66ac4cb6 Tweak doc comments. 2021-10-11 16:22:35 +01:00
Jonathan Pallant (42 Technology) 64207a62e5 Add comment to calc_delta function as it's non-obvious. 2021-10-11 16:22:11 +01:00
Jonathan Pallant (42 Technology) f56369e1c7 Add example which uses the ROM functions 2021-10-11 15:45:44 +01:00
Jonathan Pallant (42 Technology) 7a05b8f3a7 Fix the ROM function table code. 
The floating point table lookup was incorrect.
 2021-10-11 15:45:34 +01:00
9names a0740a5ac3
Merge pull request #147 from Lichtso/feature/gpio_interrupt 
Add GPIO interrupt configuration functions
 2021-10-07 09:52:21 +11:00
9names f92c9900cf
Merge pull request #152 from anall/feature/rom_data_unsafe_reapply 
split rom_data into safe and unsafe functions (reapply due to inadvertent revert)
 2021-10-07 09:40:57 +11:00
Jan Niehusmann e63f1f6dee Make pio-proc a dev-dependency 
It's only used in an example, so it doesn't need to be a regular
dependency.
 2021-10-07 09:39:08 +11:00
Andrea Nall dab619d627 split rom_data into safe and unsafe functions 
This was originally applied in 71a7057b76
and got inadvertently reverted as part of e3be4f8025
 2021-10-02 11:22:32 -05:00
Jan Niehusmann ad68c9d696
Fix i2c write read (#146) 
* i2c write_read: don't continue with read if write aborted

* i2c write_read: use correct length of read buffer
 2021-10-02 17:43:05 +10:00
9names ede25a4f15
Merge pull request #143 from mgottschlag/pio-rework 
Rework the PIO API
 2021-10-02 16:41:38 +10:00
Alexander Meißner 90470b6ff3
Adds reset for timer, otherwise it would not run. (#136) 2021-10-02 15:41:04 +10:00
Jan Niehusmann 2b6de3a3c9
implement embedded-hal 1.0.0-alpha.5 (#131) 
* implement embedded-hal 1.0.0-alpha.5

* Depend on specific alpha version of embedded-hal.

* enable feature eh1_0_alpha for CI check
 2021-10-02 15:36:40 +10:00
Mathias Gottschlag 4db944ad4e pio: Fix clippy warnings and examples in doc comments. 2021-10-01 18:41:10 +02:00
Alexander Meißner dbd4c7dfea Implements interrupts for GPIO pins. 2021-10-01 14:32:24 +02:00
Mathias Gottschlag 2fc42e07f2 pio: Rename read_rx/write_tx to read/write. 2021-10-01 08:47:16 +02:00
Mathias Gottschlag 207f5aebdb pio: Split RX and TX FIFO functions into different types. 
We need separate types for any blocking or DMA operations - otherwise, it
would not be possible to perform both RX and TX transfers at the same time.
 2021-09-30 09:07:15 +02:00
Mathias Gottschlag dbe7f48699 pio: Identify state machines via generic parameters. 
Eventually, the read and write FIFOs need to be split into separate
objects for DMA. To be able to safely rejoin them only when they belong to
the same state machine, the state machine index needs to be encoded into
the type.
 2021-09-29 21:42:05 +02:00
Mathias Gottschlag 64fa8441d8 pio: Fix bugs spotted in the review. 2021-09-29 20:55:24 +02:00
Mathias Gottschlag 684f483859 pio: Improve documentation and add an example that uses pio_proc::pio!(). 2021-09-28 21:48:05 +02:00
Mathias Gottschlag 515eac5553 pio: Differentiate between uninitialized/stopped/running state machines. 
Some operations must only be performed in a specific state. For example,
pin directions must not be changed while the state machine is running, as
the operation modifies PINCTRL. The new API makes wrong usage a lot harder.

Also, the code now supports uninitializing state machines to free
instruction space or to select a different function.
 2021-09-28 21:15:28 +02:00
Mathias Gottschlag 4d97d9fe75 pio: Enable code sharing between SMs via objects for installed programs. 
Multiple state machines may want to execute the same program (e.g., two
state machines are used to implement two I2C buses), in which code sharing
saves space.
 2021-09-28 20:27:40 +02:00
Mathias Gottschlag 959f714fb9 pio: Fix marking used instruction space. 2021-09-28 20:27:40 +02:00
Mathias Gottschlag 2ff9ae156f pio: Fix some doc comments. 2021-09-28 20:27:40 +02:00
Mathias Gottschlag e5a7c325b0 pio: Split PIO into multiple objects that can be moved around separately. 
One PIO block often implements multiple functions that are used in
different parts of the codebase. Previously, that would be impossible, as
PIO contained all StateMachine instances.

Now, StateMachine instances use atomic operations whenever accessing shared
registers, so they can be used concurrently.
 2021-09-28 20:27:22 +02:00
Jonathan Pallant da89888ccb
Merge pull request #137 from 42-technology-ltd/ensure-hal-examples-non-board-specific 
Working on README and examples
 2021-09-28 10:46:42 +01:00
Jonathan Pallant (42 Technology) fc0075a381 Addressing review comments. 2021-09-28 09:26:31 +01:00
Jonathan Pallant (42 Technology) 0beedde69b Ugh. Thanks, rustfmt. 2021-09-27 19:03:07 +01:00
Jonathan Pallant (42 Technology) d251627e47 Make trait comments more consistent. 2021-09-27 19:01:46 +01:00
Jonathan Pallant (42 Technology) 8876159687 Ah, rustfmt. 2021-09-27 18:58:16 +01:00
Jonathan Pallant (42 Technology) c04f439020 Polish the watchdog example. 2021-09-27 18:57:19 +01:00
Jonathan Pallant (42 Technology) b005128a73 Oh, make sure uart example actually builds. 2021-09-27 18:57:10 +01:00
Jonathan Pallant (42 Technology) 7e03772687 Polish the UART example. 2021-09-27 18:52:13 +01:00
Jonathan Pallant (42 Technology) b894ab9ce7 Cleaning up. 2021-09-27 18:43:01 +01:00
Jonathan Pallant (42 Technology) 225eabb449 Use peripheral clock to describe the clock signal given to peripherals. 2021-09-27 18:42:36 +01:00
Jonathan Pallant (42 Technology) 17afa25d2a Polish PWM blink example. 2021-09-27 18:37:29 +01:00
Jonathan Pallant (42 Technology) b370bb5270 Polish SPI example. 2021-09-27 18:37:20 +01:00
Jonathan Pallant (42 Technology) 0336458344 Update LCD example. 2021-09-27 18:14:54 +01:00
Jonathan Pallant (42 Technology) b7acc7c373 Polish I2C example. 2021-09-27 17:30:29 +01:00
Jonathan Pallant (42 Technology) 193972bb9f Polish GPIO example. 2021-09-27 17:30:18 +01:00
Jonathan Pallant (42 Technology) d5a07bc398 Remove hard coded clock speed from blink example. 2021-09-27 17:30:06 +01:00
Jonathan Pallant (42 Technology) 07c183a636 Remove hard coded clock speed from ADC example. 2021-09-27 17:29:50 +01:00
Jonathan Pallant 77787e760d
Merge pull request #133 from jannic/pio-blinky-example 
Add a simple example for PIO.
 2021-09-27 15:35:26 +01:00
Jonathan Pallant (42 Technology) b0bcbe68d8 Update blinky example. 2021-09-27 14:47:25 +01:00
Jonathan Pallant (42 Technology) ed27dc9949 Update ADC example. 2021-09-27 14:42:19 +01:00
Jonathan Pallant (42 Technology) 0fa6bf9e0e README updates. 
Trying to clarify what is HAL specific and what is RP specific.
 2021-09-27 14:32:11 +01:00
Jan Niehusmann fbe2a8834f Update comment on top of pio_blink.rs 2021-09-27 12:36:23 +00:00
Jan Niehusmann c93ea0b97c Update comments in examples/pio_blink.rs 2021-09-26 13:51:48 +00:00
Jan Niehusmann 105dcfddd7
Implement bus keep inputs, as documented in C SDK (#134) 
When both pull-up and pull-down are enabled, the RP2040 enters a
so-called "bus keep" function, which uses a weak pull to tue current
high/low state of the GPIO.

See for example
https://raspberrypi.github.io/pico-sdk-doxygen/group__hardware__gpio.html#gab6bf9552da32b3dd0a5d0db45d8374fc
 2021-09-26 23:38:07 +10:00
Rob Young d93c4fc4c8
Implement RngCore for RingOscillator (#135) 
Implement rand_core::RngCore for RingOscillator from the get_random_bit
function. This is not suitable for security purposes so
rand_core::CryptoRng has not been implemented.
 2021-09-26 20:51:01 +10:00
Jan Niehusmann b79f859d72 Add a simple example for PIO. 2021-09-25 13:22:13 +00:00
9names b0c15ccc77
Update changelog and bump verson for hal release 0.3.0 (#121) 
* Update CHANGELOG.md and Cargo.toml for release 0.3.0

* Bump BSP hal dep version
 2021-09-22 20:43:30 +10:00
Jonathan Nilsson be4a7e0498
Make Spi::set_baudrate public (#116) 2021-09-22 20:41:21 +10:00
Jonathan Pallant (42 Technology) 3e036cf9b0 Polishing the blinky examples. 2021-09-21 10:03:47 +01:00
Henrik Lievonen 904b6f0ab9
Implement GPIO override (#123) 
* Implement GPIO override

Interrupt status, input, output enable and output can be overridden.
See documentation for GPIO0_CTRL.

* Fix override enum names

* Use override_value instead of raw identifier
 2021-09-20 19:38:12 +10:00
Henrik Lievonen 25e477b73e
Fix PWM set/clr_inverted (#122) 2021-09-20 12:20:42 +10:00
9names ac7a17f6e1
Add doc example for i2c (#112) 2021-09-19 22:34:11 +10:00
9names 0942a170f1
Add basic SPI example (#113) 2021-09-19 22:33:36 +10:00
Wilfried Chauveau 1d5dd15092 Work around enumeration issues with small ep0 max packet size. 
Prevents DataIn of the previous request from being sent to the host when
a new setup is received.
 2021-09-19 22:27:17 +10:00
9names 98b8e3ae9c
Handle usb interrupt flags in driver (#106) 
Set interrupt enable flags in USB driver. The flags were already being cleared in the USB driver.
Update USB examples to remove interrupt flag set/check as it is no longer necessary.
 2021-09-17 09:40:10 +10:00
Wilfried Chauveau c509b9d22f
Add embedded_hal::timer support (#110) 
* Add embedded_hal::timer support

* fixup: add pico countdown based blinky example & rework get_counter(&self) -> u16
 2021-09-16 18:47:34 +10:00
Gus Caplan 833b69819e use pio instruction encoding apis 2021-09-16 17:40:25 +10:00
Jonathan Nilsson b399c96cf5
Fixed u8 overflow in spi with large postdiv (#111) 2021-09-16 10:12:58 +10:00
Henrik Lievonen d941f5637b
PIO support (#74) 
Initial implementation of PIO 

Add all of the infrastructure required to include PIO programs and interact with PIO peripheral registers.
This was a massive effort between @devsnek and @henkkuli. It's great that it's now ready to go.

Co-authored-by: Gus Caplan <me@gus.host>
 2021-09-16 00:32:00 +10:00
Jonathan Nilsson 8a42d6cf8a
Update pac so we can use rt 0.7 (#107) 
* Update pac so we can use rt 0.7

* Update pac in all board crates
 2021-09-15 15:07:25 +10:00
9names 7afa19a82b
Usb fixes (#104) 
* Remove check for ep0 buffer.len == 64

* Simplify EP buffer check
 2021-09-11 18:31:45 +10:00
Jonathan Nilsson 0e5d582363 Fix adc giving wrong values on sequential reads of multiple channels 2021-09-10 20:34:24 +10:00
Wilfried Chauveau db11231f49
Implement usb_device for rp2040 (#98) 
Implement usb_device for rp2040

Limitations
- RP2040-E5 (Device enumeration workaround) is not implemented
- Suspend/resume is not implemented
- VBus detection is not tested and may not be fully implemented
 2021-09-09 17:55:30 +10:00
9names 9d2e18dc70
Add ADC example and doc-example (#93) 2021-09-02 22:40:13 +10:00
9names 301281cba8
i2c lockup fix (#94) 
* Fix check for empty tx-fifo

* Add read trait

* Move from asserts to Err for read/write errors
 2021-09-02 22:34:12 +10:00
Hmvp ffa39f65f5
Pwm improvements (#61) 
* Reimplement PWM driver using typestates
* Improve docs
 2021-09-02 09:37:17 +10:00
Hmvp 216aad2c76 Update and move readmes 
The READMEs that go to crates.io need to be in the crate dir
 2021-08-26 00:18:55 +10:00
Jonathan 'theJPster' Pallant db7217192a
Merge pull request #96 from 9names/gpio-doc 
Add doc example for gpio
 2021-08-23 22:31:36 +01:00
9names 4c38af0079 Add doc-example to gpio 2021-08-23 23:15:20 +10:00
Jonathan 'theJPster' Pallant ee5e6ee1cb
Merge pull request #90 from 9names/i2c-hacks 
I2c fixes
 2021-08-21 19:43:04 +01:00
9names fae1caaca9
Watchdog example (#86) 
* Add watchdog example

* Add watchdog doc-example

* Add changes to the change log
 2021-08-21 21:05:55 +10:00
9names 151b754d90 Remove setting fields set by default() 2021-08-21 15:17:51 +10:00
9names 021221ede3 Switch the modify where C SDK does 2021-08-21 02:16:25 +10:00
9names 31b9aa85d1 Ensure only pull-up or pull-down is enabled 2021-08-21 02:09:26 +10:00
9names e00a432ed5 Enable internal pullups for i2c 2021-08-21 02:07:56 +10:00
9names dbcaf1933a Fix limits on acceptable ranges 2021-08-21 01:47:11 +10:00
9names 50dbb8a22f Fix transposed variable names 2021-08-21 01:46:39 +10:00
Gus Caplan 04424fb7d4 implement timer counter 2021-08-15 12:42:56 +10:00
Hmvp d4ec87b2f7 Prepare for first release 2021-08-14 20:03:02 +10:00
Hmvp bfe6903751 Correct clobbering registers in pwm subsystem 2021-08-14 18:49:14 +10:00
Hmvp d3cb29b113
Fix doc examples and add checking (#76) 
* Fix doc examples for peripheral drivers
* Add no_run to doc examples so they can be built by CI
* Enable building doc examples in CI check workflow
 2021-08-11 10:53:42 +10:00
Derek Witt a03052355e
Correctly configure watchdog tick generation (#78) 
Fix: The divider for watchdog tick generation is now being set to the
  source clock frequency in MHz, instead of the clock frequency in Hz.
  Watchdog ticks will now be generated at 1 microsecond intervals
  as intended.
 2021-08-09 13:47:50 +10:00
9names 369ac5a23f
Add UART example + core::fmt support to UART (#73) 
* Add standalone UART example
* Add UART example to docs in UART module
* Add core::fmt::write_str to UART module to allow easy use of format! macro in user code
 2021-08-08 15:36:56 +10:00
Rudo2204 2d1086915c Fix unsigned hardware divide/modulo 2021-07-30 10:50:58 +10:00
Hmvp bcfbd72ed1 Update embedded time 2021-07-27 09:41:03 +10:00