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zephyr-cp: add board buses to the nRF54L DKs and the nRF54L15 Tag - #11618
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Not tested on hardware yet. From reading: on nRF54H20 the pin routing check only runs on nRF54L, so H20 routing isn't checked. |
Name the standard bus pins in [pins], so board.I2C(), board.SPI() and board.UART() are created on them and routed at runtime. - nRF54L15 DK: board.UART() on P0.00/P0.01, the debugger's VCOM0 serial port. No board.SPI(): the expansion header's SPI pins share lines with the console's VCOM1 port. - nRF54LM20 DK: board.SPI() on the expansion header's SPI pins, and board.UART() on P0.06/P0.07 (VCOM0). - nRF54L15 Tag: i2c21 and spi22, the onboard sensor buses, are now dynamic, with board.I2C() on P1.11/P1.12 and board.SPI() on P1.08/P1.06/P1.05. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Note by @dhalbert. Code written with Claude.
The nRF5340 DK and nRF54H20 DK changes that were here moved into #11576. This PR now names the standard bus pins in
[pins](and makes the Tag's sensor buses dynamic), which gives these boardsboardbuses under the scheme from #11576.board.UART()on P0.00/P0.01, the debugger's VCOM0 port.board.SPI()on the expansion header's SPI pins, andboard.UART()on P0.06/P0.07 (VCOM0).i2c21,spi22) are available viaboard.I2C()andboard.SPI().Some omissions:
board.SPI(). The expansion header's SPI pins conflict with the VCOM1 port, which we need for the console (no USB).board.I2C()on the nRF54L DKs: nothing on the boards or in the upstream devicetrees marks I2C pins.The nRF54L15 Tag has very limited pins, and the console and UART can conflict with I2C, so I left the default pins from upstream alone for now.
Testing
board.UART()both directions with the debugger's VCOM0 port. nRF54LM20 DK:board.SPI()MOSI-MISO loopback, 250 kHz to 16 MHz.