936: Add split() method to BufferedUarte in embassy-nrf r=ZoeyR a=ZoeyR
I haven't completed testing this yet. I'm creating this PR early so that I can get corrected if I went way off course.
This PR adds a `split()` method to `BufferedUarte` as discussed on matrix.
Co-authored-by: Zoey Riordan <zoey@dos.cafe>
938: Do not use cfg_if for embedded-hal-async feature gates. r=Dirbaio a=Dirbaio
Old code used `cfg_if!` because rustc still parses code inside disabled cfg's, and Rust stable at that time couldn't parse the new GAT where-clause location. This is not the case anymore.
bors r+
Co-authored-by: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Old code used `cfg_if!` because rustc still parses code inside disabled cfg's, and Rust stable at that time couldn't parse the new GAT where-clause location. This is not the case anymore.
928: Ensure that the sampling is stopped r=Dirbaio a=huntc
Ensures that nRF saadc sampling is stopped and is awaited prior to exiting the two sampling methods. Not doing so causes a potential power drain and the potential for dropped buffer writes when having finished continuous sampling.
Co-authored-by: huntc <huntchr@gmail.com>
total_len is already rounded up, so the `+ 3` is not needed.
And even if it was, the calculation should have been `((total_len + 3) / 4)`.
`(total_len + 3 / 4)` is equivalent to `total_len` and can overflow
the slice, leading to a panic which can easily be triggered by sending
large ICMP ECHO packets to the device.
* `MSIRGSEL = 1` was required for MSI accept the updated MSI range
* Reorder enable and clock switching to properly handle the jump from
the default 4MHz MSI to a higher MSI freuquency
Call `config()` only once at construction not with every RX and TX operation.
The Lora-E5 only supports HP mode, use that instead.
The nucleo board supports both HP and LP and should continue to work.
The Seeed Studio Lora-E5 module only has two control pins.
With the `RadioSwitch` trait the user can implement any method required
by the module/board to control the TX/RX direction of the radio frontend.
* Interrupt handler only triggers a waker:
Do the actual interrupt processing which involves SUBGHZ SPI coms in the task.
* Do not require a static state for the constructor.
* Remove unsafe from construcor.
913: (embassy-rp): Add DMA implementation r=Dirbaio a=MathiasKoch
This PR adds everything necessary to do peripheral to memory DMA & memory to memory DMA operations.
It also adds async UART read & write, powered by DMA
Co-authored-by: Mathias <mk@blackbird.online>
Ensures that nRF saadc sampling is stopped and is awaited prior to exiting the two sampling methods. Not doing so causes a potential power drain and the potential for dropped buffer writes when having finished continuous sampling.
This commit adds two constants which are intended to be used for setting
the `Word Length` and `High Speed` fields in the gSPR register
(address: 0x0000, bit: 0 and bit 4).
Currently, this field is being set by the following line:
```rust
// 32bit, little endian.
self.write32_swapped(REG_BUS_CTRL, 0x00010031).await;
```
Assuming that we are sending these bits using the gSPI write protocol
and using 16-bit word operation in little endian (which I think might
be the default) then the data bytes should be packed like this:
```
+--+--+--+--+
|D1|D0|D3|D2|
+--+--+--+--+
val (hex): 0x00010031
val (bin): 00000000000000010000000000110001
rotated(16): 00000000001100010000000000000001
```
If we split val into bytes and rotated the bits we get:
```
Split into bytes:
D3 D2 D1 D0
00000000 00000001 00000000 00110001
Rotate 16 and split into bytes:
D1 D0 D3 D2
00000000 00110001 00000000 00000001
```
Looking at the write procotol it seems to me that the above will
indeed set the `Word Length` to 1 but will also set other values.
```
Status enable (1=default)
D1 D0 D3 D2 ↓
00000000 00110001 00000000 00000001
↑↑ ↑↑ ↑
|| |Word Length (1=32-bit)
|| |
|| Endianess (0=Little)
||
|High-speed mode (1=High speed (default))
|
Interrupt polarity (1=high (default))
```
This commit suggests adding the above mentioned constants for setting
the only the word length field and the high speed field.
