写一段HC32L170利用I2C接口进行通讯,采集SHT30温湿度传感器数据的程序,用小华半导体提供的i2n样例改写
时间: 2024-03-09 14:46:31 浏览: 126
温湿度采集软件sht30_串口通讯_传感器_温湿度采集sht30_stm32管脚模拟IIC通讯_温湿度采集_
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好的,以下是一个简单的HC32L170利用I2C接口进行通讯,采集SHT30温湿度传感器数据的程序,基于小华半导体提供的i2c样例进行改写:
```c
#include "hc32_gpio.h"
#include "hc32_i2c.h"
#define SHT30_ADDR 0x44 // SHT30的I2C从机地址
#define CMD_MEASURE 0x2C06 // 采集温湿度命令
#define CMD_RESET 0x30A2 // 复位命令
static stc_i2c_config_t stcI2cCfg;
void I2C_Configuration(void)
{
/* 使能I2C模块的时钟 */
Sysctrl_SetPeripheralGate(SysctrlPeripheralI2c1, TRUE);
/* 配置I2C的时钟分频系数 */
stcI2cCfg.u32Baudrate = 100000UL;
stcI2cCfg.enI2cMode = I2cMaster;
stcI2cCfg.u8SlaveAddr = 0;
stcI2cCfg.bWaitSelection = FALSE;
stcI2cCfg.bDmaEnable = FALSE;
stcI2cCfg.bIrqEnable = FALSE;
I2C_Init(I2C1, &stcI2cCfg);
}
void SHT30_Reset(void)
{
uint8_t u8Data[2];
u8Data[0] = CMD_RESET >> 8;
u8Data[1] = CMD_RESET & 0xFF;
/* 发送复位命令 */
I2C_Start(I2C1);
I2C_SendData(I2C1, SHT30_ADDR << 1);
I2C_CheckAck(I2C1);
I2C_SendData(I2C1, u8Data[0]);
I2C_CheckAck(I2C1);
I2C_SendData(I2C1, u8Data[1]);
I2C_CheckAck(I2C1);
I2C_Stop(I2C1);
}
void SHT30_Measure(float *pfTemp, float *pfHumi)
{
uint8_t u8Data[6];
uint16_t u16RawTemp, u16RawHumi;
/* 发送采集命令 */
u8Data[0] = CMD_MEASURE >> 8;
u8Data[1] = CMD_MEASURE & 0xFF;
I2C_Start(I2C1);
I2C_SendData(I2C1, SHT30_ADDR << 1);
I2C_CheckAck(I2C1);
I2C_SendData(I2C1, u8Data[0]);
I2C_CheckAck(I2C1);
I2C_SendData(I2C1, u8Data[1]);
I2C_CheckAck(I2C1);
I2C_Stop(I2C1);
/* 等待采集完成 */
Ddl_Delay1ms(20); // SHT30最大采集时间为15ms
/* 读取采集数据 */
I2C_Start(I2C1);
I2C_SendData(I2C1, (SHT30_ADDR << 1) | 1);
I2C_CheckAck(I2C1);
u8Data[0] = I2C_ReceiveData(I2C1);
I2C_Ack(I2C1);
u8Data[1] = I2C_ReceiveData(I2C1);
I2C_Ack(I2C1);
u8Data[2] = I2C_ReceiveData(I2C1);
I2C_Ack(I2C1);
u8Data[3] = I2C_ReceiveData(I2C1);
I2C_Ack(I2C1);
u8Data[4] = I2C_ReceiveData(I2C1);
I2C_Ack(I2C1);
u8Data[5] = I2C_ReceiveData(I2C1);
I2C_Nack(I2C1);
I2C_Stop(I2C1);
/* 计算温度和湿度 */
u16RawTemp = (u8Data[0] << 8) | u8Data[1];
u16RawHumi = (u8Data[3] << 8) | u8Data[4];
*pfTemp = -45.0 + 175.0 * ((float)u16RawTemp / 65535.0);
*pfHumi = 100.0 * ((float)u16RawHumi / 65535.0);
}
int main(void)
{
float fTemp, fHumi;
/* 初始化I2C模块 */
I2C_Configuration();
/* 复位SHT30传感器 */
SHT30_Reset();
while (1)
{
/* 采集温湿度数据 */
SHT30_Measure(&fTemp, &fHumi);
/* 在这里可以对采集到的温湿度数据进行处理和输出 */
}
}
```
以上代码实现了HC32L170通过I2C接口与SHT30温湿度传感器进行通信,发送复位命令和采集命令,读取采集数据并计算温度和湿度数据。在实际应用中,可以根据需要对采集到的数据进行输出或处理。
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