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[Backport v2.8-branch] samples: peripheral: lpuart: Fix uart0 pins in nrf52840dk #18724

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Nov 7, 2024
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[Backport v2.8-branch] samples: peripheral: lpuart: Fix uart0 pins in nrf52840dk #18724

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cd2547c
samples: peripheral: lpuart: Fix uart0 pins in nrf52840dk and nrf21540dk
nordic-krch Nov 7, 2024
7f1a662
samples: peripheral: lpuart: Update README with pin setup
nordic-krch Nov 7, 2024
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30 changes: 28 additions & 2 deletions samples/peripheral/lpuart/README.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,34 @@ The sample supports the following development kits:

The sample also requires the following pins to be shorted:

* TX (Arduino Digital Pin 10 (4 on nRF21540 DK)) with RX (Arduino Digital Pin 11 (5 on nRF21540 DK))
* Request Pin (Arduino Digital Pin 12 (6 on nRF21540 DK)) with Response Pin (Arduino Digital Pin 13 (7 on nRF21540 DK))
.. list-table:: Pin connections.
:widths: auto
:header-rows: 1

* - Development Kit
- nRF52 DK
- nRF52833 DK
- nRF52840 DK
- nRF21540 DK
- nRF5340 DK pins
- nRF54L15 DK pins
- nRF9160 DK pins
* - Request-Response Pins
- P0.24-P0.25
- P0.22-P0.23
- P1.14-P1.15
- P1.07-P1.08
- P1.14-P1.15
- P1.08-P1.09
- P0.12-P0.13
* - UART RX-TX Pins
- P0.22-P0.23
- P0.20-P0.21
- P1.12-P1.13
- P1.05-P1.06
- P1.12-P1.13
- P1.10-P1.11
- P0.10-P0.11

Additionally, it requires a logic analyzer.

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4 changes: 2 additions & 2 deletions samples/peripheral/lpuart/boards/nrf21540dk_nrf52840.overlay
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Expand Up @@ -19,11 +19,11 @@
* observed on nRF21540 v2.0.0 only (~450 uA more than on v1.0.0).
*/
group1 {
psels = <NRF_PSEL(UART_TX, 0, 20)>,
psels = <NRF_PSEL(UART_TX, 0, 6)>,
<NRF_PSEL_DISCONNECTED(UART_RTS)>;
};
group2 {
psels = <NRF_PSEL(UART_RX, 0, 22)>,
psels = <NRF_PSEL(UART_RX, 0, 8)>,
<NRF_PSEL_DISCONNECTED(UART_CTS)>;
};
};
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4 changes: 2 additions & 2 deletions samples/peripheral/lpuart/boards/nrf52840dk_nrf52840.overlay
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Expand Up @@ -23,11 +23,11 @@
* observed on nRF52840 v3.0.0 only (~450 uA more then on v2.1.0).
*/
group1 {
psels = <NRF_PSEL(UART_TX, 0, 20)>,
psels = <NRF_PSEL(UART_TX, 0, 6)>,
<NRF_PSEL_DISCONNECTED(UART_RTS)>;
};
group2 {
psels = <NRF_PSEL(UART_RX, 0, 22)>,
psels = <NRF_PSEL(UART_RX, 0, 8)>,
<NRF_PSEL_DISCONNECTED(UART_CTS)>;
};
};
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