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samples: auxdisplay: Add ESP32 board overlay

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Add the overlay for the esp-wrover-kit, to drive a character display
based on HD44780 chipset using the I2C bus gpio controller PCF8574.

Signed-off-by: Marek Matej <marek.matej@espressif.com>
This commit is contained in:
Marek Matej 2024-04-16 20:13:55 +02:00 committed by Alberto Escolar
parent 01ea0f2d7e
commit ea80a331c0
1 changed files with 34 additions and 0 deletions
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34
samples/drivers/auxdisplay/boards/esp_wrover_kit.overlay Normal file
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/*
* Character HD44780 module driven by the PCF8574 gpio.
*/
&i2c0 {
aux_display_gpio: pcf8574@27 {
compatible = "nxp,pcf857x";
reg = <0x27>;
gpio-controller;
ngpios = <8>;
#gpio-cells = <2>;
};
};
/ {
auxdisplay_0: hd44780 {
compatible = "hit,hd44780";
columns = <16>;
rows = <2>;
mode = <4>;
boot-delay-ms = <100>;
enable-line-rise-delay-us = <1000>;
enable-line-fall-delay-us = <500>;
register-select-gpios = <&aux_display_gpio 0 (GPIO_ACTIVE_HIGH)>;
read-write-gpios = <&aux_display_gpio 1 (GPIO_ACTIVE_HIGH)>;
enable-gpios = <&aux_display_gpio 2 (GPIO_ACTIVE_HIGH)>;
backlight-gpios = <&aux_display_gpio 3 (GPIO_ACTIVE_HIGH)>;
data-bus-gpios = <0>, <0>, <0>, <0>,
<&aux_display_gpio 4 (GPIO_ACTIVE_HIGH)>,
<&aux_display_gpio 5 (GPIO_ACTIVE_HIGH)>,
<&aux_display_gpio 6 (GPIO_ACTIVE_HIGH)>,
<&aux_display_gpio 7 (GPIO_ACTIVE_HIGH)>;
};
};