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boards: arm: Enable arduino serial port on mimxrt1064_evk

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Configures lpuart3 pinmuxes. This instance is attached to the Arduino
serial header pins and can be used for Bluetooth serial HCI with a
frdm_kw41z or other BLE controller shield.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
This commit is contained in:
Maureen Helm 2021-05-17 16:51:33 -05:00 • committed by Kumar Gala
commit b94677b063
4 changed files with 25 additions and 0 deletions
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4
boards/arm/mimxrt1064_evk/doc/index.rst
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@ -151,6 +151,10 @@ The MIMXRT1064 SoC has four pairs of pinmux/gpio controllers.
+---------------+-----------------+---------------------------+
| GPIO_AD_B0_13 | LPUART1_RX | UART Console |
+---------------+-----------------+---------------------------+
| GPIO_AD_B1_06 | LPUART3_TX | UART Arduino |
+---------------+-----------------+---------------------------+
| GPIO_AD_B1_07 | LPUART3_RX | UART Arduino |
+---------------+-----------------+---------------------------+
| WAKEUP | GPIO | SW0 |
+---------------+-----------------+---------------------------+
| GPIO_B0_00 | LCD_CLK | LCD Display |

4
boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts
View file

@ -198,6 +198,10 @@ arduino_i2c: &lpi2c1 {};
current-speed = <115200>;
};
arduino_serial: &lpuart3 {
current-speed = <115200>;
};
&enet {
status = "okay";
ptp {

1
boards/arm/mimxrt1064_evk/mimxrt1064_evk.yaml
View file

@ -16,6 +16,7 @@ ram: 32768
flash: 4096
supported:
- arduino_gpio
- arduino_serial
- counter
- display
- gpio

16
boards/arm/mimxrt1064_evk/pinmux.c
View file

@ -130,6 +130,22 @@ static int mimxrt1064_evk_init(const struct device *dev)
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif
#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart3), okay) && CONFIG_SERIAL
/* LPUART3 TX/RX */
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_06_LPUART3_TX, 0);
IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_07_LPUART3_RX, 0);
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_06_LPUART3_TX,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_07_LPUART3_RX,
IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif
#if DT_NODE_HAS_STATUS(DT_NODELABEL(lcdif), okay) && CONFIG_DISPLAY
IOMUXC_SetPinMux(IOMUXC_GPIO_B0_00_LCD_CLK, 0);
IOMUXC_SetPinMux(IOMUXC_GPIO_B0_01_LCD_ENABLE, 0);