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Author SHA1 Message Date
9names a0740a5ac3
Merge pull request #147 from Lichtso/feature/gpio_interrupt 
Add GPIO interrupt configuration functions
 2021-10-07 09:52:21 +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
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
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
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
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
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 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