PMS7003 PM2.5测试仪,带SHT20温湿度 STM32源码 -

#include "global_includes.h"
#include <stdio.h>
#include <string.h>
#include "stm32f10x_rcc.h"
typedef struct
{
uint16_t Buffer_Len;
uint16_t PM1_0_CF;
uint16_t PM2_5_CF;
uint16_t PM10_CF;
uint16_t PM1_0;
uint16_t PM2_5;
uint16_t PM10;
uint16_t Count0_3nm;
uint16_t Count0_5nm;
uint16_t Count1_0nm;
uint16_t Count2_5nm;
uint16_t Count5_0nm;
uint16_t Count10nm;
}PM_Sensor_DataStruct;
typedef enum {RESET = 0, SET = !RESET} FlagStatus;
typedef enum {ERROR = 0, SUCCESS = !ERROR} ErrorStatus;
PM_Sensor_DataStruct PM_Sensor_Data;
uint8_t PM_Sensor_RxBuffer[50];
uint16_t PM_Sensor_RxTimeOut = 0;
uint16_t PM_Sensor_RxCount = 0;
FlagStatus PM_Sensor_RxFinish = RESET;
void SysTick_Handler(void) // SYS timer interrupt function
{
//OS_TimeMS ++; // ++1us for os timer
//==========================================================================
if(PM_Sensor_RxTimeOut != 0x00) // timeout for PM data receive
{
PM_Sensor_RxTimeOut--;
}
else
{
if((PM_Sensor_RxCount)&&(PM_Sensor_RxBuffer[0] == 'B')&&(PM_Sensor_RxBuffer[1] == 'M'))
{
PM_Sensor_RxCount = 0;
PM_Sensor_RxFinish = SET;
USART_ITConfig(USART1,USART_IT_RXNE,DISABLE);
}
else
{
PM_Sensor_RxCount = 0;
}
}
}
void USART1_IRQHandler(void) // USART1 interrupt
{
static uint8_t USART1_ByteData = 0;
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
{
USART1_ByteData = USART_ReceiveData(USART1);
if(PM_Sensor_RxFinish == RESET)
{
PM_Sensor_RxBuffer[PM_Sensor_RxCount++] = USART1_ByteData;
PM_Sensor_RxTimeOut = 20;
}
}
//============================================================================
if(USART_GetFlagStatus(USART1, USART_FLAG_ORE) != RESET)
{
USART1_ByteData = USART_ReceiveData(USART1);
USART_ClearFlag(USART1, USART_FLAG_ORE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_NE) != RESET)
{
USART_ClearFlag(USART1, USART_FLAG_NE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_FE) != RESET)
{
USART_ClearFlag(USART1, USART_FLAG_FE);
}
if(USART_GetFlagStatus(USART1, USART_FLAG_PE) != RESET)
{
USART_ClearFlag(USART1, USART_FLAG_PE);
}
}
//=============================================================================
//PM_USART1_Configuartion USART1 configuration
//=============================================================================
void PM_USART1_Configuartion(void)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA |
RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1, ENABLE);
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA9 USART1_Tx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //推挽输出-TX
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PA10 USART1_Rx */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //浮空输入-RX
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600; //波特率
USART_InitStructure.USART_WordLength = USART_WordLength_8b; //设置数据长度为8bit
USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位为1
USART_InitStructure.USART_Parity = USART_Parity_No; //无校验位
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//数据流控制为none
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //接收和发送模式都打开
USART_Init(USART1, &USART_InitStructure); //初始化串口1
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE); // 接收接收中断
USART_ITConfig(USART1, USART_IT_ERR | USART_IT_PE, ENABLE);
/* Enable the USART1 */
USART_Cmd(USART1, ENABLE); //使能USART1
}
//=============================================================================
//Check_PMSensor_DataValid //
//=============================================================================
ErrorStatus Check_PMSensor_DataValid(void)
{
uint16_t Cal_CheckSum;
uint16_t Buffer_CheckSum;
uint16_t Buffer_Len;
uint8_t i;
ErrorStatus Result = ERROR;
if((PM_Sensor_RxBuffer[0] == 'B')&&(PM_Sensor_RxBuffer[1] == 'M'))
{
Buffer_Len = (uint16_t)((PM_Sensor_RxBuffer[2] << 8) | PM_Sensor_RxBuffer[3]);
Buffer_CheckSum = (uint16_t)((PM_Sensor_RxBuffer[Buffer_Len + 2] << 8) | PM_Sensor_RxBuffer[Buffer_Len + 3]);
Cal_CheckSum = 0;
for(i=0;i<(Buffer_Len + 2);i++)
{
Cal_CheckSum += PM_Sensor_RxBuffer[i];
}
if(Cal_CheckSum == Buffer_CheckSum)
Result = SUCCESS;
}
return Result;
}
//=============================================================================
//PMSensor_DataReflash //
//=============================================================================
void PMSensor_DataReflash(void)
{
uint16_t Buffer_Len;
memset(&PM_Sensor_Data,0,(sizeof(PM_Sensor_Data) - 2)); //PM_Sensor_Data.PM2_5_Old should not set to zero
Buffer_Len = (uint16_t)((PM_Sensor_RxBuffer[2] << 8) | PM_Sensor_RxBuffer[3]);
if(Buffer_Len == 28) //PMS1003/5003
{
PM_Sensor_Data.Buffer_Len = 28;
PM_Sensor_Data.PM1_0_CF = (uint16_t)((PM_Sensor_RxBuffer[4]<<8) | PM_Sensor_RxBuffer[5]);
PM_Sensor_Data.PM2_5_CF = (uint16_t)((PM_Sensor_RxBuffer[6]<<8) | PM_Sensor_RxBuffer[7]);
PM_Sensor_Data.PM10_CF = (uint16_t)((PM_Sensor_RxBuffer[8]<<8) | PM_Sensor_RxBuffer[9]);
PM_Sensor_Data.PM1_0 = (uint16_t)((PM_Sensor_RxBuffer[10]<<8) | PM_Sensor_RxBuffer[11]);
PM_Sensor_Data.PM2_5 = (uint16_t)((PM_Sensor_RxBuffer[12]<<8) | PM_Sensor_RxBuffer[13]);
PM_Sensor_Data.PM10 = (uint16_t)((PM_Sensor_RxBuffer[14]<<8) | PM_Sensor_RxBuffer[15]);
PM_Sensor_Data.Count0_3nm = (uint16_t)((PM_Sensor_RxBuffer[16]<<8) | PM_Sensor_RxBuffer[17]);
PM_Sensor_Data.Count0_5nm = (uint16_t)((PM_Sensor_RxBuffer[18]<<8) | PM_Sensor_RxBuffer[19]);
PM_Sensor_Data.Count1_0nm = (uint16_t)((PM_Sensor_RxBuffer[20]<<8) | PM_Sensor_RxBuffer[21]);
PM_Sensor_Data.Count2_5nm = (uint16_t)((PM_Sensor_RxBuffer[22]<<8) | PM_Sensor_RxBuffer[23]);
PM_Sensor_Data.Count5_0nm = (uint16_t)((PM_Sensor_RxBuffer[24]<<8) | PM_Sensor_RxBuffer[25]);
PM_Sensor_Data.Count10nm = (uint16_t)((PM_Sensor_RxBuffer[26]<<8) | PM_Sensor_RxBuffer[27]);
}
else if(Buffer_Len == 20)// PMS3003
{
PM_Sensor_Data.Buffer_Len = 20;
PM_Sensor_Data.PM1_0_CF = (uint16_t)((PM_Sensor_RxBuffer[4]<<8) | PM_Sensor_RxBuffer[5]);
PM_Sensor_Data.PM2_5_CF = (uint16_t)((PM_Sensor_RxBuffer[6]<<8) | PM_Sensor_RxBuffer[7]);
PM_Sensor_Data.PM10_CF = (uint16_t)((PM_Sensor_RxBuffer[8]<<8) | PM_Sensor_RxBuffer[9]);
PM_Sensor_Data.PM1_0 = (uint16_t)((PM_Sensor_RxBuffer[10]<<8) | PM_Sensor_RxBuffer[11]);
PM_Sensor_Data.PM2_5 = (uint16_t)((PM_Sensor_RxBuffer[12]<<8) | PM_Sensor_RxBuffer[13]);
PM_Sensor_Data.PM10 = (uint16_t)((PM_Sensor_RxBuffer[14]<<8) | PM_Sensor_RxBuffer[15]);
PM_Sensor_Data.Count0_3nm = 0;
PM_Sensor_Data.Count0_5nm = 0;
PM_Sensor_Data.Count1_0nm = 0;
PM_Sensor_Data.Count2_5nm = 0;
PM_Sensor_Data.Count5_0nm = 0;
PM_Sensor_Data.Count10nm = 0;
}
}
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f10x_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f10x.c file
*/
SetSysClockInternal(); // sysclock for internal RC
/**/
SysTick_Init();
/**/
NVIC_Configuration();
/**/
PM_USART1_Configuartion();
/**/
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