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annotate Small_CPU/Inc/uartProtocol_Co2.h @ 1072:8b97003dbb60 Icon_Integration

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Improve CO2 calibration: The most common calibration environment for diving is fresh air => ~400ppm co2. Some sensors do not have this setting as default => Calibration to 0ppm. To make sure that a proper calibration reference is set the common used value of 400ppm is not set before starting the calibration. For implementation new states were added to the co2 protocol state maschine. In addition the rx processor is now able to handle two responds parameters.
author Ideenmodellierer
date Thu, 19 Feb 2026 21:37:34 +0100
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children
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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>&copy; 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_MODE, /* set operation mode for sensor */
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41 UART_CO2_OPERATING, /* normal operation */
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42 UART_CO2_CALIBRATE_H, /* request calibration */
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43 UART_CO2_CALIBRATE_L,
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44 UART_CO2_CALIBRATE
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45 } uartCO2Status_t;
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46
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47 typedef enum
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48 {
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49 CO2RX_Ready= 0, /* Initial state */
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50 CO2RX_DetectStart, /* validate start byte */
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51 CO2RX_SelectData, /* Data contained in this frame */
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52 CO2RX_Data0, /* Process incoming data */
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53 CO2RX_Data1,
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54 CO2RX_Data2,
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55 CO2RX_Data3,
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56 CO2RX_Data4,
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57 CO2RX_Data5,
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58 CO2RX_Data6,
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59 CO2RX_Data7,
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60 CO2RX_Data8,
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61 CO2RX_Data9,
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62 CO2RX_Data10,
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63 CO2RX_Data11,
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64 CO2RX_Data12,
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65 CO2RX_DataComplete
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66 } receiveStateCO2_t;
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67
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68
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69 typedef enum
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70 {
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71 CO2CMD_MODE_POLL, /* Set operation mode of sensor to polling => only send data if requested */
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72 CO2CMD_MODE_STREAM, /* Set operation mode of sensor to streaming => send data every two seconds */
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73 CO2CMD_CALIBRATE_H, /* Calibrate sensor, send HIGH reference */
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74 CO2CMD_CALIBRATE_L, /* Send low reference */
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75 CO2CMD_CALIBRATE, /* Execute calibration */
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76 CO2CMD_GETSCALE, /* Get scaling factor */
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77 CO2CMD_GETDATA /* Read sensor data */
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78 } co2SensorCmd_t;
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79
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80
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81 void uartCo2_Control(void);
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82 void uartCo2_ProcessData(uint8_t data);
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83 void uartCo2_SendCmd(uint8_t CO2Cmd, uint8_t *cmdString, uint8_t *cmdLength);
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84 uint8_t uartCo2_isSensorConnected();
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85
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86 #endif /* UART_PROTOCOL_CO2_H */