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Author SHA1 Message Date
Jan Niehusmann b1dc9aec8c Fix UART init code 
Set uartlcr_h before enabling the UART.
Writing uartlcr_h while the UART is enabled is forbidden by the datasheet.

Details can be found here:
https://developer.arm.com/documentation/ddi0183/g/programmers-model/register-descriptions/line-control-register--uartlcr-h?lang=en
(As referenced from the Datasheet)
 2021-10-30 10:19:13 +11:00
Jan Niehusmann 73431a847b
fix UART rx (#187) 2021-10-30 10:16:43 +11:00
contradict fe1e55b8c0
Mark PIO StateMachine, Rx and Tx as Send (#177) 
* Mark PIO StateMachine, Rx and Tx as Send

* Improve comment grammar.

Co-authored-by: Wilfried Chauveau <wilfried.chauveau@ithinuel.me>
 2021-10-27 21:34:08 +11:00
Wilfried Chauveau 73e2c6921f Make ReadableOutput public to match the visibility of other Type-level variant of PinMode. 2021-10-27 21:32:38 +11:00
Jonathan 'theJPster' Pallant 3b019fb91d
Merge pull request #182 from jannic/issue-181 
Correct limit for PIOBuilder::out_pins count argument
 2021-10-25 13:17:05 +01:00
Jan Niehusmann 9f55608f92 Correct limit for PIOBuilder::out_pins count argument 
This value is written to the PINCTRL register field
OUT_COUNT, which accoding to the data sheet has a valid range
of 0-32.

Fixes #181
 2021-10-23 13:34:05 +00:00
contradict 11aaf9be79
API to enable/disable interrupts for each PWM channel. (#175) 
* API to enable/disable interrupts for each PWM channel.

* Better name for overflow check.
 2021-10-23 22:47:08 +11:00
Wilfried Chauveau 46e580b852
Adds an example of using the PIO as I2C driver to control an LM75B temperature sensor (#180) 
* Add pico_i2c_pio example

* Update pico_i2c_pio's main function documentation

* Update bootloader reference.

* Implement uart output for the pico_i2c_pio example.

* pin to a specific rev of i2c-pio

* Bump i2c-pio to get the fix for write_read
 2021-10-23 22:45:13 +11:00
contradict 97079489ef Mark Timer as sync 
Since all accesses are read-only there is no synchronizing to be done.
 2021-10-23 00:03:30 +11:00
Jan Niehusmann 4c4d12e23c minor docs improvements in pio.rs 2021-10-22 23:52:14 +11:00
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
Jan Niehusmann 233f7c9475 README: Add option --locked to cargo install elf2uf2-rs 
Without the --locked option, cargo currently tries to compile it using
clap v3.0.0-beta.5, which fails:

```
[...]
   Compiling clap v3.0.0-beta.5
   Compiling elf2uf2-rs v1.3.5
error[E0432]: unresolved import `clap::Clap`
 -->
/home/jan/.cargo/registry/src/github.com-1ecc6299db9ec823/elf2uf2-rs-1.3.5/src/main.rs:3:5
  |
3 | use clap::Clap;
  |     ^^^^^^^^^^ no `Clap` in the root
[...]
```

With --locked, it uses clap v3.0.0-beta.4, which works.
 2021-10-22 00:01:47 +11:00
Jonathan Pallant 6330dab44e
Merge pull request #171 from 42-technology-ltd/update_boot2 
Switch to new rp2040-boot2 crate.
 2021-10-18 11:45:32 +01:00
Jonathan Pallant (42 Technology) e48323c983 Ah, missed one after the rebase. 2021-10-18 10:58:38 +01:00
Jonathan Pallant (42 Technology) e3f9125a87 Can we build without GCC now? 2021-10-18 10:56:30 +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 dd4a9a8f22
Merge pull request #165 from 42-technology-ltd/bootrom_functions_update 
Bootrom functions update
 2021-10-13 15:09:24 +01:00
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 02cb4b8b06
Merge pull request #157 from 42-technology-ltd/add-cargo-config-helptext 
Add some help text to cargo/config
 2021-10-07 09:59:29 +11:00
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
Jonathan Pallant (42 Technology) 3d8ccf55ab Add some help text. 2021-10-05 11:51:20 +01:00
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
9names 8690d93a6a Use local rp2040-hal version when building in-crate 2021-10-02 20:05:22 +10:00
Wilfried Chauveau c8609e9ef1 Update WS2812 usage after PIO api's breaking change. 2021-10-02 20:05:22 +10:00
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
Stephen Onnen 800f71a1b8 Implement QT Py BSP with example 2021-10-02 17:42:03 +10:00
9names ede25a4f15
Merge pull request #143 from mgottschlag/pio-rework 
Rework the PIO API
 2021-10-02 16:41:38 +10:00
9names 666b22f56b
Update example feather_neopixel_rainbow.rs with new Timer syntax (#148) 2021-10-02 16:03:36 +10:00
Jordan Williams 82dfd8e2cc Add an example using the Feather RP2040's onboard NeoPixel 
This uses PIO just like the Pro Micro does.
 2021-10-02 15:46:09 +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 d1bbceaab4 Add changelog entry about PIO changes.. 2021-10-01 08:50:18 +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