19703: cpu/sam0_eth: interrupt based link detection/auto-negotiation r=benpicco a=benpicco
19724: dist/tools/openocd: add OPENOCD_SERVER_ADDRESS variable r=benpicco a=fabian18
19735: nrf5x_common: Clear I2C periph shorts r=benpicco a=bergzand
### Contribution description
The I2C peripheral's shortcuts are used with the read and write register to automatically stop the I2C transaction or to continue with the next stage.
With simple I2C read and write bytes these shorts are not used, but are also not cleared by the function in all cases, causing it to use the shortcut configuration set by a previous function call. This patch ensures that the shorts are always set by the read and write functions
### Testing procedure
Should be possible to spot with a logic analyzer and the I2C periph test. Maybe the HIL test can also detect it :)
### Issues/PRs references
None
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Fabian Hüßler <fabian.huessler@ml-pa.com>
Co-authored-by: Koen Zandberg <koen@bergzand.net>
The I2C peripheral's shortcuts are used with the read and write register
to automatically stop the I2C transaction or to continue with the next
stage.
With simple I2C read and write bytes these shorts are not used, but are
also not cleared by the function in all cases, causing it to use the
shortcut configuration set by a previous function call. This patch
ensures that the shorts are always set by the read and write functions
19729: cpu/qn908x/periph_i2c: allow internal pull-up on SCL r=maribu a=maribu
### Contribution description
Allow the board config to specify use of external or external pull-up resistor on the SCL up. Default to the internal pull-up, two weak pull ups in parallel are preferable over no pull-up.
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@posteo.net>
Always enable the internal pull-up on the SCL line to always have a
functional I2C bus. This may increase power consumption where an
external pull up is present as well. But let's wait for a real world
use case where this would help to extend battery life before making
this configurable.
This fixes https://github.com/RIOT-OS/RIOT/issues/19021
19730: boards/qn9080dk: fix periph conflict r=maribu a=maribu
### Contribution description
- Document which I2C/SPI/UART peripheral maps to which FLEXCONN IP block to easily detect potential overlap
- Switch conflict between SPI and I2C peripheral by using a different FLEXCONN for I2C
19731: boards/qn9080dk: update doc on flashing r=maribu a=maribu
### Contribution description
- update the doc on the internal programmer firmware:
- not only switching to J-Link, but also just updating it does improve reliability of flashing
- give hints in how to get the ~~shitty~~ wonderful update process working
- update notes on OpenOCD requirements
Co-authored-by: Marian Buschsieweke <marian.buschsieweke@posteo.net>
- update the doc on the internal programmer firmware:
- not only switching to J-Link, but also just updating it does
improve reliability of flashing
- give hints in how to get the ~~shitty~~ wonderful update process
working
- update notes on OpenOCD requirements
- Document which I2C/SPI/UART peripheral maps to which FLEXCONN IP
block to easily detect potential overlap
- Switch conflict between SPI and I2C peripheral by using a different
FLEXCONN for I2C
19580: board: add Adafruit Grand Central M4 Express support r=maribu a=gschorcht
### Contribution description
This PR provides the support for Adafruit Grand Central M4 Express board. The main features of the board are:
- ATSAMD51 Cortex M4 running at 120 MHz
- 1MB Flash
- 256 KB RAM
- external 8 MB QSPI Flash storage
- Micro SD Card slot connected to SPI
### Testing procedure
### Issues/PRs references
Co-authored-by: Gunar Schorcht <gunar@schorcht.net>
