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798
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1 /**
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2 ******************************************************************************
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3 * @file uartProtocol_Co2.h
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4 * @author heinrichs weikamp gmbh
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5 * @version V0.0.1
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6 * @date 31-Jul-2023
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7 * @brief Interface functionality to handle external, UART based CO2 sensors
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8 *
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9 @verbatim
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10 ==============================================================================
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11 ##### How to use #####
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12 ==============================================================================
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13 @endverbatim
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14 ******************************************************************************
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15 * @attention
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16 *
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17 * <h2><center>© COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
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18 *
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19 ******************************************************************************
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20 */
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21
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22 /* Define to prevent recursive inclusion -------------------------------------*/
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23 #ifndef UART_PROTOCOL_CO2_H
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24 #define UART_PROTOCOL_CO2_H
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25
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26 #ifdef __cplusplus
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27 extern "C" {
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28 #endif
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29
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30 /* Includes ------------------------------------------------------------------*/
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31 #include "configuration.h"
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32 #include "stm32f4xx_hal.h"
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33
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34 typedef enum
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35 {
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36 UART_CO2_INIT = 0, /* Default Status for every sensor type */
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37 UART_CO2_IDLE, /* sensor detected and no communication pending */
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38 UART_CO2_ERROR,
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39 UART_CO2_SETUP = 10, /* collecting data needed to be read out of the sensor once at startup */
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40 UART_CO2_OPERATING, /* normal operation */
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41 UART_CO2_CALIBRATE /* request calibration */
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42 } uartCO2Status_t;
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43
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44 typedef enum
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45 {
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842
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46 CO2RX_Ready= 0, /* Initial state */
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47 CO2RX_DetectStart, /* validate start byte */
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48 CO2RX_SelectData, /* Data contained in this frame */
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49 CO2RX_Data0, /* Process incoming data */
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50 CO2RX_Data1,
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51 CO2RX_Data2,
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52 CO2RX_Data3,
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53 CO2RX_Data4,
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54 CO2RX_Data5,
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55 CO2RX_Data6,
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56 CO2RX_Data7,
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57 CO2RX_Data8,
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58 CO2RX_Data9,
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59 CO2RX_Data10,
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60 CO2RX_Data11,
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61 CO2RX_Data12,
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62 CO2RX_DataComplete
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63 } receiveStateCO2_t;
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798
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64
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65
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66 typedef enum
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67 {
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68 CO2CMD_MODE_POLL, /* Set operation mode of sensor to polling => only send data if requested */
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69 CO2CMD_MODE_STREAM, /* Set operation mode of sensor to streaming => send data every two seconds */
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70 CO2CMD_CALIBRATE, /* Calibrate sensor */
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71 CO2CMD_GETSCALE, /* Get scaling factor */
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72 CO2CMD_GETDATA /* Read sensor data */
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73 } co2SensorCmd_t;
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74
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75
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76 void uartCo2_Control(void);
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77 void uartCo2_ProcessData(uint8_t data);
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78 void uartCo2_SendCmd(uint8_t CO2Cmd, uint8_t *cmdString, uint8_t *cmdLength);
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79 uint8_t uartCo2_isSensorConnected();
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80
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81 #endif /* UART_PROTOCOL_CO2_H */
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