zephyr stm32f4驱动 oled VGM128064E0W01

zephyr stm32f4驱动 oled VGM128064E0W01 使用spi驱动

1.工程目录结构

2.设备树app.overlay

/ {


	chosen {
		zephyr,console = &usart2;
		zephyr,shell-uart = &usart2;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,ccm = &ccm0;
		zephyr,display = &vgm128064;
	};

	leds {
		compatible = "gpio-leds";
		led: led {
			gpios = <&gpiob 14 GPIO_ACTIVE_HIGH>;
			label = "User LED";
		};
	};
	aliases {
        oled = &vgm128064;
    };

  
};	


&usart2 {
	status = "okay";
	pinctrl-names = "default";
	current-speed = <2000000>;
};
&spi2 {
    status = "okay";
	   /* 添加必需的pinctrl-0属性 */
    pinctrl-0 = <&spi2_sck_pb13 &spi2_mosi_pb15 &oled_reset_pb11 &oled_dc_pb10 &oled_cs_pb12>;
    pinctrl-names = "default";
    cs-gpios = <&gpiob 12 GPIO_ACTIVE_LOW>;
    vgm128064: vgm128064@0{
		compatible = "sitronix,st7567";
		reg = <0x2>;
		spi-max-frequency = <10000000>;
        spi-cpha;
        spi-cpol;
        spi-hold-cs;
		width = <128>;
		height = <64>;
        column-offset = <0>;
        line-offset = <0>;
        regulation-ratio = <7>;
		reset-gpios = <&gpiob 11 GPIO_ACTIVE_LOW>;
        data-cmd-gpios=<&gpiob 10 GPIO_ACTIVE_HIGH>;
        status = "okay";  /* 必须设置为okay才能启用节点 */

    };
};
/* 完整的引脚控制配置 */
&pinctrl {
    /* SPI2 SCK (PB13) */
    spi2_sck_pb13: spi2_sck_pb13 {
        pinmux = <STM32_PINMUX('B', 13, AF5)>; // AF5 = SPI2_SCK
        slew-rate = "very-high-speed";
    };
    
    /* SPI2 MOSI (PB15) */
    spi2_mosi_pb15: spi2_mosi_pb15 {
        pinmux = <STM32_PINMUX('B', 15, AF5)>; // AF5 = SPI2_MOSI

        slew-rate = "very-high-speed";
    };
    
    /* OLED控制引脚 */
    oled_reset_pb11: oled_reset_pb11 {
        pinmux = <STM32_PINMUX('B', 11, GPIO)>;
        output-high;
    };
    
    oled_dc_pb10: oled_dc_pb10 {
        pinmux = <STM32_PINMUX('B', 10, GPIO)>;
        output-high;
    };
    
    oled_cs_pb12: oled_cs_pb12 {
        pinmux = <STM32_PINMUX('B', 12, AF5)>;
        slew-rate = "very-high-speed";
    };
};

/* 禁用可能冲突的TIMER2 */
&timers2 {
    status = "disabled";
};

3.工程配置prj.conf

# 调试
CONFIG_LOG=y
# SPI配置
CONFIG_SPI=y
CONFIG_SPI_STM32=y
CONFIG_SPI_STM32_DMA=y

CONFIG_DISPLAY_LOG_LEVEL_DBG=y
CONFIG_SPI_LOG_LEVEL_DBG=y
CONFIG_LOG_BUFFER_SIZE=8192
CONFIG_GPIO=y
# 显示驱动
CONFIG_DISPLAY=y
CONFIG_ST7567=y
CONFIG_DISPLAY=y
CONFIG_CHARACTER_FRAMEBUFFER=y
CONFIG_CHARACTER_FRAMEBUFFER_USE_DEFAULT_FONTS=y


# 显示配置
# CONFIG_DISPLAY=y
# CONFIG_DISPLAY_SSD1306=y
# CONFIG_DISPLAY_SSD1306_SPI=y



# 字体和缓冲区配置
CONFIG_HEAP_MEM_POOL_SIZE=2048
CONFIG_MAIN_STACK_SIZE=2048

3.驱动文件oled_font.c

#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/display.h>
#include <zephyr/display/cfb.h>  // 包含CFB库头文件
#include <zephyr/kernel.h>
// 获取 SPI 屏幕设备
static const struct device *get_display_device(void)
{
    // 设备标签需与设备树中  匹配
    const struct device *dev = DEVICE_DT_GET(DT_ALIAS(oled));//DEVICE_DT_GET_ANY(sitronix_ssd7567);//
    if (!device_is_ready(dev)) {
        printf("SPI 屏幕设备未就绪！\n");
        return NULL;
    }
    return dev;
}



void test_display(void) {
    const struct device *display_dev = get_display_device();

    // 检查显示设备是否就绪
    if (!device_is_ready(display_dev)) {
        return;
    }

    // 初始化CFB库
    if (cfb_framebuffer_init(display_dev) != 0) {
        return; // 初始化失败
    }

    // 设置字体（0为默认字体索引）
    cfb_framebuffer_set_font(display_dev, 0);

    // 清屏
    cfb_framebuffer_clear(display_dev, true);

    // 在坐标(10, 10)处显示字符串
    cfb_print(display_dev, "hello, world!", 10, 10);
     cfb_framebuffer_finalize(display_dev);
k_msleep(2000);
    cfb_framebuffer_invert(display_dev);

    // 刷新显示（将数据写入硬件）
     cfb_framebuffer_finalize(display_dev);
}

4.驱动.h文件

#ifndef OLED_HHH__
#define OLED_HHH__
#include <stdint.h>
#include <stdbool.h>
void test_display(void);

#endif // OLED_FONT_H

5.main.c

/*
 * Copyright (c) 2016 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stdio.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include "oled_font.h"

/* 1000 msec = 1 sec */
#define SLEEP_TIME_MS   1000

/* The devicetree node identifier for the "led0" alias. */
#define LED0_NODE DT_ALIAS(led0)

/*
 * A build error on this line means your board is unsupported.
 * See the sample documentation for information on how to fix this.
 */
static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);

int main(void)
{
	int ret;
	bool led_state = true;


	if (!gpio_is_ready_dt(&led)) {
		return 0;
	}

	ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
	if (ret < 0) {
		return 0;
	}
k_msleep(SLEEP_TIME_MS);
k_msleep(SLEEP_TIME_MS);
    test_display();
	while (1) {
		ret = gpio_pin_toggle_dt(&led);
		if (ret < 0) {
			return 0;
		}

		led_state = !led_state;
		printf("LED state: %s\n", led_state ? "ON" : "OFF");
		k_msleep(SLEEP_TIME_MS);
	}
	return 0;
}

6.完整项目

通过网盘分享的文件：zephyr 12864.zip
链接: https://pan.baidu.com/s/1a524HLCb_4qIfb6YEL2weA 提取码: hqe5