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boards: arm: lpcxpresso55s16: enable I2C support

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Enable I2C support for the NXP LPCXpresso55S16 EVK development board.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
This commit is contained in:
Henrik Brix Andersen 2020-05-02 21:54:15 +02:00 • committed by Maureen Helm
commit 144dcdd02b
5 changed files with 62 additions and 2 deletions
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4
boards/arm/lpcxpresso55s16/Kconfig.defconfig
View file

@ -28,4 +28,8 @@ config GPIO_MCUX_LPC_PORT1
endif # GPIO_MCUX_LPC
config FXOS8700_DRDY_INT1
default y
depends on FXOS8700_TRIGGER
endif # BOARD_LPCXPRESSO55S16

14
boards/arm/lpcxpresso55s16/doc/index.rst
View file

@ -63,8 +63,12 @@ hardware features:
+-----------+------------+-------------------------------------+
| GPIO | on-chip | gpio |
+-----------+------------+-------------------------------------+
| I2C | on-chip | i2c |
+-----------+------------+-------------------------------------+
| USART | on-chip | serial port |
+-----------+------------+-------------------------------------+
| SENSOR | off-chip | fxos8700 trigger |
+-----------+------------+-------------------------------------+
Other hardware features are not currently enabled.
@ -97,6 +101,12 @@ the functionality of a pin.
+---------+-----------------+----------------------------+
| PIO1_18 | GPIO | Wakeup SW1 |
+---------+-----------------+----------------------------+
| PIO1_20 | I2C | I2C SCL |
+---------+-----------------+----------------------------+
| PIO1_21 | I2C | I2C SDA |
+---------+-----------------+----------------------------+
| PIO1_26 | GPIO | FXOS8700 INT1 |
+---------+-----------------+----------------------------+
System Clock
============
@ -109,8 +119,8 @@ Serial Port
===========
The LPC55S16 SoC has 8 FLEXCOMM interfaces for serial
communication. One is configured as USART for the console and the
remaining are not used.
communication. One is configured as USART for the console, one is
configured for I2C, and the remaining are not used.
Programming and Debugging
*************************

15
boards/arm/lpcxpresso55s16/lpcxpresso55s16_common.dtsi
View file

@ -61,3 +61,18 @@
compatible = "nxp,lpc-usart";
current-speed = <115200>;
};
arduino_i2c: &flexcomm4 {
status = "okay";
compatible = "nxp,lpc-i2c";
clock-frequency = <I2C_BITRATE_STANDARD>;
#address-cells = <1>;
#size-cells = <0>;
fxos8700@1e {
compatible = "nxp,fxos8700";
reg = <0x1e>;
label = "FXOS8700";
int1-gpios = <&gpio1 26 GPIO_ACTIVE_LOW>;
};
};

2
boards/arm/lpcxpresso55s16/lpcxpresso55s16_ns.yaml
View file

@ -15,4 +15,6 @@ toolchain:
- gnuarmemb
- xtools
supported:
- arduino_i2c
- gpio
- i2c

29
boards/arm/lpcxpresso55s16/pinmux.c
View file

@ -118,6 +118,35 @@ static int lpcxpresso_55s16_pinmux_init(struct device *dev)
pinmux_pin_set(port0, 30, port0_pin30_config);
#endif
#if DT_HAS_NODE(DT_NODELABEL(flexcomm4)) && \
DT_NODE_HAS_COMPAT(DT_NODELABEL(flexcomm4), nxp_lpc_i2c)
/* PORT1 PIN20 is configured as FC4_TXD_SCL_MISO_WS */
pinmux_pin_set(port1, 20, IOCON_PIO_FUNC5 |
IOCON_PIO_MODE_INACT |
IOCON_PIO_SLEW_STANDARD |
IOCON_PIO_INV_DI |
IOCON_PIO_DIGITAL_EN |
IOCON_PIO_OPENDRAIN_DI);
/* PORT1 PIN21 is configured as FC4_RXD_SDA_MOSI_DATA */
pinmux_pin_set(port1, 21, IOCON_PIO_FUNC5 |
IOCON_PIO_MODE_INACT |
IOCON_PIO_SLEW_STANDARD |
IOCON_PIO_INV_DI |
IOCON_PIO_DIGITAL_EN |
IOCON_PIO_OPENDRAIN_DI);
#endif
#ifdef CONFIG_FXOS8700_TRIGGER
pinmux_pin_set(port1, 26, IOCON_PIO_FUNC0 |
IOCON_PIO_MODE_PULLUP |
IOCON_PIO_INV_DI |
IOCON_PIO_DIGITAL_EN |
IOCON_PIO_INPFILT_OFF |
IOCON_PIO_SLEW_STANDARD |
IOCON_PIO_OPENDRAIN_DI);
#endif
return 0;
}