293 lines
8.3 KiB
C
293 lines
8.3 KiB
C
#include "E53_IA1.h"
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#include "stm32l4xx.h"
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#include "i2c.h"
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#include "string.h"
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const int16_t POLYNOMIAL = 0x131;
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E53_IA1_Data_TypeDef E53_IA1_Data;
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/***************************************************************
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* 函数名称: Init_BH1750
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* 说 明: 写命令初始化BH1750
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Init_BH1750(void)
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{
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uint8_t t_Data = 0x01;
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HAL_I2C_Master_Transmit(&hi2c1,BH1750_Addr,&t_Data,1,0xff);
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}
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/***************************************************************
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* 函数名称: Start_BH1750
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* 说 明: 启动BH1750
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Start_BH1750(void)
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{
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uint8_t t_Data = 0x10;
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HAL_I2C_Master_Transmit(&hi2c1,BH1750_Addr,&t_Data,1,0xff);
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}
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/***************************************************************
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* 函数名称: Convert_BH1750
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* 说 明: 数值转换
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* 参 数: 无
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* 返 回 值: 光强值
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***************************************************************/
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float Convert_BH1750(void)
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{
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float result_lx;
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uint8_t BUF[2];
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int result;
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Start_BH1750();
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HAL_Delay(180);
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HAL_I2C_Master_Receive(&hi2c1, BH1750_Addr+1,BUF,2,0xff);
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result=BUF[0];
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result=(result<<8)+BUF[1]; //Synthetic Digital Illumination Intensity Data
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result_lx=(float)(result/1.2);
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return result_lx;
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}
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/***************************************************************
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* 函数名称: SHT30_reset
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* 说 明: SHT30复位
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void SHT30_reset(void)
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{
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uint8_t SHT3X_Resetcommand_Buffer[2]={0x30,0xA2}; //soft reset
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HAL_I2C_Master_Transmit(&hi2c1,SHT30_Addr<<1,SHT3X_Resetcommand_Buffer,2,0x10);
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HAL_Delay(15);
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}
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/***************************************************************
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* 函数名称: Init_SHT30
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* 说 明: 初始化SHT30，设置测量周期
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Init_SHT30(void)
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{
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uint8_t SHT3X_Modecommand_Buffer[2]={0x22,0x36}; //periodic mode commands
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HAL_I2C_Master_Transmit(&hi2c1,SHT30_Addr<<1,SHT3X_Modecommand_Buffer,2,0x10); //send periodic mode commands
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}
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/***************************************************************
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* 函数名称: SHT3x_CheckCrc
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* 说 明: 检查数据正确性
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* 参 数: data：读取到的数据
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nbrOfBytes：需要校验的数量
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checksum：读取到的校对比验值
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* 返 回 值: 校验结果，0-成功 1-失败
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***************************************************************/
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uint8_t SHT3x_CheckCrc(char data[], char nbrOfBytes, char checksum)
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{
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char crc = 0xFF;
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char bit = 0;
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char byteCtr ;
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//calculates 8-Bit checksum with given polynomial
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for(byteCtr = 0; byteCtr < nbrOfBytes; ++byteCtr)
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{
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crc ^= (data[byteCtr]);
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for ( bit = 8; bit > 0; --bit)
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{
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if (crc & 0x80) crc = (crc << 1) ^ POLYNOMIAL;
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else crc = (crc << 1);
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}
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}
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if(crc != checksum)
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return 1;
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else
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return 0;
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}
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/***************************************************************
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* 函数名称: SHT3x_CalcTemperatureC
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* 说 明: 温度计算
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* 参 数: u16sT：读取到的温度原始数据
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* 返 回 值: 计算后的温度数据
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***************************************************************/
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float SHT3x_CalcTemperatureC(unsigned short u16sT)
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{
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float temperatureC = 0; // variable for result
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u16sT &= ~0x0003; // clear bits [1..0] (status bits)
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//-- calculate temperature [℃] --
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temperatureC = (175 * (float)u16sT / 65535 - 45); //T = -45 + 175 * rawValue / (2^16-1)
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return temperatureC;
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}
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/***************************************************************
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* 函数名称: SHT3x_CalcRH
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* 说 明: 湿度计算
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* 参 数: u16sRH：读取到的湿度原始数据
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* 返 回 值: 计算后的湿度数据
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***************************************************************/
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float SHT3x_CalcRH(unsigned short u16sRH)
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{
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float humidityRH = 0; // variable for result
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u16sRH &= ~0x0003; // clear bits [1..0] (status bits)
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//-- calculate relative humidity [%RH] --
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humidityRH = (100 * (float)u16sRH / 65535); // RH = rawValue / (2^16-1) * 10
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return humidityRH;
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}
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/***************************************************************
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* 函数名称: Init_Motor
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* 说 明: 初始化Init_E53_IA1的马达
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Init_Motor(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* GPIO Ports Clock Enable */
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IA1_Motor_GPIO_CLK_ENABLE();
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/*Configure GPIO pin Output Level */
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HAL_GPIO_WritePin(IA1_Motor_GPIO_Port, IA1_Motor_Pin, GPIO_PIN_RESET);
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E53_IA1_Data.MotorMode=0;
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/*Configure GPIO pin : PtPin */
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GPIO_InitStruct.Pin = IA1_Motor_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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HAL_GPIO_Init(IA1_Motor_GPIO_Port, &GPIO_InitStruct);
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}
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void motor_control(char mode){
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if(mode==1)
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{
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E53_IA1_Data.MotorMode=1;
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HAL_GPIO_WritePin(IA1_Motor_GPIO_Port, IA1_Motor_Pin, GPIO_PIN_SET);
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}
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else if(mode==0)
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{
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E53_IA1_Data.MotorMode=0;
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HAL_GPIO_WritePin(IA1_Motor_GPIO_Port, IA1_Motor_Pin, GPIO_PIN_RESET);
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}
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}
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void light_control(char mode){
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if(mode==1)
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{
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E53_IA1_Data.LightMode=1;
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HAL_GPIO_WritePin(IA1_Light_GPIO_Port, IA1_Light_Pin, GPIO_PIN_SET);
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}
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else if(mode==0)
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{
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E53_IA1_Data.LightMode=0;
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HAL_GPIO_WritePin(IA1_Light_GPIO_Port, IA1_Light_Pin, GPIO_PIN_RESET);
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}
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}
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/***************************************************************
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* 函数名称: Init_Light
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* 说 明: 初始化Init_E53_IA1的补光灯
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Init_Light(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* GPIO Ports Clock Enable */
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IA1_Light_GPIO_CLK_ENABLE();
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/*Configure GPIO pin Output Level */
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HAL_GPIO_WritePin(IA1_Light_GPIO_Port, IA1_Light_Pin, GPIO_PIN_RESET);
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E53_IA1_Data.LightMode=0;
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/*Configure GPIO pin : PtPin */
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GPIO_InitStruct.Pin = IA1_Light_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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HAL_GPIO_Init(IA1_Light_GPIO_Port, &GPIO_InitStruct);
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}
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/***************************************************************
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* 函数名称: Init_E53_IA1
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* 说 明: 初始化Init_E53_IA1
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void Init_E53_IA1(void)
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{
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//printf("E53_sensor_board init!\n");
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MX_I2C1_Init();
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Init_BH1750();
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Init_SHT30();
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Init_Motor();
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Init_Light();
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memset((char *)&E53_IA1_Data,0,sizeof(E53_IA1_Data));
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}
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/***************************************************************
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* 函数名称: E53_IA1_Read_Data
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* 说 明: 测量光照强度、温度、湿度
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* 参 数: 无
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* 返 回 值: 无
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***************************************************************/
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void E53_IA1_Read_Data(void)
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{
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char data[3]; //data array for checksum verification
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unsigned short tmp = 0;
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uint16_t dat;
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uint8_t SHT3X_Fetchcommand_Bbuffer[2]={0xE0,0x00}; //read the measurement results
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uint8_t SHT3X_Data_Buffer[6]; //byte 0,1 is temperature byte 4,5 is humidity
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E53_IA1_Data.Lux=Convert_BH1750(); //Read bh1750 sensor data
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HAL_I2C_Master_Transmit(&hi2c1,SHT30_Addr<<1,SHT3X_Fetchcommand_Bbuffer,2,0x10); //Read sht30 sensor data
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HAL_I2C_Master_Receive(&hi2c1,(SHT30_Addr<<1)+1,SHT3X_Data_Buffer,6,0x10);
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// /* check tem */
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data[0] = SHT3X_Data_Buffer[0];
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data[1] = SHT3X_Data_Buffer[1];
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data[2] = SHT3X_Data_Buffer[2];
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tmp=SHT3x_CheckCrc(data, 2, data[2]);
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if( !tmp ) /* value is ture */
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{
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dat = ((uint16_t)data[0] << 8) | data[1];
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E53_IA1_Data.Temperature = SHT3x_CalcTemperatureC( dat );
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}
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// /* check humidity */
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data[0] = SHT3X_Data_Buffer[3];
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data[1] = SHT3X_Data_Buffer[4];
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data[2] = SHT3X_Data_Buffer[5];
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tmp=SHT3x_CheckCrc(data, 2, data[2]);
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if( !tmp ) /* value is ture */
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{
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dat = ((uint16_t)data[0] << 8) | data[1];
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E53_IA1_Data.Humidity = SHT3x_CalcRH( dat );
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}
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}
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