STM32MP1移植ESP-Hosted(1)

m0_37985956

已于 2024-12-27 10:07:18 修改

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文章标签： stm32 单片机物联网

于 2024-12-26 22:13:13 首次发布

本文链接：https://blog.youkuaiyun.com/m0_37985956/article/details/144754099

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设备树

实物图
- 把RESET飞线和PF13焊接连通，使用PF13控制RESET复位
- 注意开发板底板上SPI_A/B的SCK/MISO/MOSI是相同的SPI5总线
  - SPI_B SCK接ESP IO1
  - SPI_B MOSI接ESP IO18
  - SPI_B MISO接ESP IO19
  - PH5接ESP IO0 CS
  - SPI_A SCK接ESP RXD(SCK_A引脚不能悬空，否则加载ko异常报错)
  - PA13接ESP IO5 handshake
  - PA5接ESP data ready
  - PF13接ESP RESET
- 其余引脚按照以下引脚分配
```
STM32MP1引脚配置

SPI5_SCK - PH6 - GPIO51
SPI5_MISO - PH7 - GPIO52 
SPI5_MOSI - PF11 - GPIO118    
CS - PH5 - GPIO91
date ready - PA5 - GPIO29
handshake - PA13 - GPIO116
EN - PF13 - GPIO93
```

在这里插入图片描述

100ask_stm32mp157_pro-sdk\Linux-5.4\arch\arm\boot\dts\stm32mp157-100ask-pinctrl.dtsi

	spi5_pins_a: spi5-0 { 
	        pins1 {
			pinmux = <STM32_PINMUX('F', 11, AF5)>, /* SPI5_MOSI */
				 <STM32_PINMUX('H', 6, AF5)>; /* SPI5_SCK */
			bias-disable;
			drive-push-pull;
			slew-rate = <1>;
		};
                pins2 {
                        pinmux = <STM32_PINMUX('H', 7, AF5)>; /* SPI5_MISO */
                        bias-disable;
                };
                pins3 {
                       pinmux = <STM32_PINMUX('H', 5, GPIO)>; // 修改GPIOG10 -> GPIOH5(AF5 -> GPIO)
                       drive-push-pull;
                       bias-pull-up;
                       output-high;
                       slew-rate = <1>;
                };
	};
	spi5_sleep_pins_a: spi5-sleep-0 {
		pins {
	                pinmux = <STM32_PINMUX('F', 11, ANALOG)>, /* SPI5_MOSI */
                                 <STM32_PINMUX('H', 6, ANALOG)>, /* SPI5_SCK */
                                 <STM32_PINMUX('H', 7, ANALOG)>, /* SPI5_MISO */
                                 <STM32_PINMUX('H', 5, ANALOG)>; // 修改GPIOG10 -> GPIOH
        	};
	};

100ask_stm32mp157_pro-sdk\Linux-5.4\arch\arm\boot\dts\stm32mp157c-100ask-512d-v1.dts

&spi5 {
        pinctrl-names = "default", "sleep";
        pinctrl-0 = <&spi5_pins_a>;
        pinctrl-1 = <&spi5_sleep_pins_a>;
        status = "okay";
        cs-gpios = <&gpioh 5 GPIO_ACTIVE_LOW>;
#if 0 // TODO: check
        spidevesp: esp32@0{
                compatible = "brcm,bcm2708";
                spi-max-frequency = <60000000>;
                reg = <0>;
        };
#endif
};

声明环境变量

export ARCH=arm
export CROSS_COMPILE=arm-buildroot-linux-gnueabihf-
export PATH=$PATH:/home/xxxx/Downloads/01_STM32/100ask_stm32mp157_pro-sdk/ToolChain/arm-buildroot-linux-gnueabihf_sdk-buildroot/bin

使用100ask_stm32mp157_pro_defconfig
```
make 100ask_stm32mp157_pro_defconfig
```

编译设备树和内核

make dtbs
make uImage LOADADDR=0xC2000040

在这里插入图片描述

将stm32mp157c-100ask-512d-v1.dtb和uImage复制到tftp目录，在uBoot下按空格，设置从网络启动

setenv mybootnet 'tftp c2000000 uImage;tftp c4000000 stm32mp157c-100ask-512d-v1.dtb;bootm c2000000 - c4000000'
saveenv
run mybootnet

如果遇到网络错误，设置serverip和ipaddr

setenv serverip 192.168.xx.xx
setenv ipaddr 192.168.xx.xx

确保板子上有根文件系统
硬件连接，底板上SPI有SCK不能浮空，否则会异常

参考文章：
DongshanPI Seven_stm32mp157-BaseBoardSCH.pdf
嵌入式Linux应用开发完全手册V5.2_STM32MP157_Pro开发板.pdf
【正点原子】STM32MP1嵌入式Linux驱动开发指南V2.1.pdf