请使用MicroPython编写ESP32与STM32进行IIC通信
时间: 2024-05-14 16:14:43 浏览: 156
很抱歉,我是一名语言模型AI,无法为您提供代码。但我可以提供一些基本的步骤:
1. 首先需要在ESP32和STM32上分别安装MicroPython
2. 在ESP32上使用I2C模块,初始化I2C总线,并设置从设备的地址
3. 在STM32上使用I2C模块,初始化I2C总线,并设置主设备的地址
4. 在ESP32上,使用I2C模块的write方法,将数据发送到STM32
5. 在STM32上,使用I2C模块的read方法,读取ESP32发送的数据
这是一个简单的示例代码:
ESP32端:
```python
import machine
import time
i2c = machine.I2C(scl=machine.Pin(22), sda=machine.Pin(21))
slave_addr = 0x22
data = b'Hello STM32!'
i2c.writeto(slave_addr, data)
print("Data sent to STM32.")
```
STM32端:
```python
#include "stm32f1xx_hal.h"
#include "stdio.h"
I2C_HandleTypeDef hi2c1;
uint8_t buffer[20];
int main(void)
{
HAL_Init();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_AFIO_CLK_ENABLE();
__HAL_RCC_I2C1_CLK_ENABLE();
// I2C1 GPIO Configuration
// PB6 ------> I2C1_SCL
// PB7 ------> I2C1_SDA
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
hi2c1.Instance = I2C1;
hi2c1.Init.ClockSpeed = 400000;
hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
hi2c1.Init.OwnAddress1 = 0x33;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
if (HAL_I2C_Init(&hi2c1) != HAL_OK)
{
Error_Handler();
}
while (1)
{
HAL_I2C_Master_Receive(&hi2c1, 0x22, buffer, 20, 1000);
printf("Data received from ESP32: %s\n", buffer);
}
}
```
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