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12 commits

Author SHA1 Message Date
A. Gavin 993487443a
examples: clarify usage of boot2 section (#443) 2022-09-02 06:38:58 +01:00
Wilfried Chauveau 0e2b4cf7be
Add a method to allow setting the PIO's clock divisor without floats (#440) 
* pio: Changes `PIOBuilder::clock_divisor` from f32 to fixed point)
* pio: mark clock_divisor as deprecated
 2022-08-31 21:44:53 +01:00
Wilfried Chauveau 42e929d7e1
Use rp2040-hal in all example (possibly through their bsp) (#423) 
* Use rp2040-hal in all example (possibly through their bsp)

Some of the examples were using the cortex_m_rt::entry method which
misses the device specific spinlock re-initialisation.

This commits makes the usage more consistent by using rp2040_hal exported
macro as the only `entry` method used across examples.
 2022-08-21 19:01:45 +01:00
Jan Niehusmann d4743061fa Use generic boot loader for rp2040-hal examples 
Those examples should be independent of a specific board.
The generic boot loader increases their compatibility.
 2022-08-11 11:56:41 +00:00
Jan Niehusmann 44019781e2 Use wfi in otherwise empty infinite loops in examples 
- Clippy warns about empty loops, https://github.com/rust-lang/rust-clippy/issues/6161
- wfi allows to CPU to save some power

WFI was avoided in examples for fear of ill interactions with debuggers.
However the rp2040 debug port does continue to work, as long as the
relevant clocks are not disabled in SLEEP_EN0/SLEEP_EN1. (By default,
all clocks stay enabled in sleep mode.)

This patch replaces several different workarounds with just calling wfi.
 2022-08-01 14:54:03 +00:00
9names dc8ceffd09 Move uses of sio::Sio to Sio 2021-12-04 16:20:27 +11:00
Jonathan Pallant (42 Technology) 8e66ddcfb1 Switch to new rp2040-boot2 crate. 2021-10-18 10:53:17 +01:00
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 684f483859 pio: Improve documentation and add an example that uses pio_proc::pio!(). 2021-09-28 21:48:05 +02:00
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 b79f859d72 Add a simple example for PIO. 2021-09-25 13:22:13 +00:00