view Small_CPU/Src/uartProtocol_Co2.c @ 988:d9290c76b840
GasConsumption
OSTC4/5 joined code:
In the previous version code differences between OSTC4/5 were identified using the ENABLE_GPIO_V2 compiler switch. In the new version this is done using the display version as indicator which OSTC model is in used. Since this is detected by Firmware the information is forwarded from there to the RTE. This causes a little delay in the GPIO initialization but this applies only to the cold start of the RTE which should not happen very often.
author
ideenmodellierer
date
Sun, 06 Apr 2025 21:02:17 +0200 (3 weeks ago)
parents
0b81ac558e89
children
line source
/**+ − ******************************************************************************+ − * @file uartProtocol_Co2.c+ − * @author heinrichs weikamp gmbh+ − * @version V0.0.1+ − * @date 31-Jul-2023+ − * @brief Interface functionality to external, UART based CO2 sensors+ − *+ − @verbatim+ − + − + − @endverbatim+ − ******************************************************************************+ − * @attention+ − *+ − * <h2><center>© COPYRIGHT(c) 2023 heinrichs weikamp</center></h2>+ − *+ − ******************************************************************************+ − */+ − /* Includes ------------------------------------------------------------------*/+ − + − #include <string.h>+ − #include <uartProtocol_Co2.h>+ − #include "uart.h"+ − #include "externalInterface.h"+ − + − #ifdef ENABLE_CO2_SUPPORT+ − static uint8_t CO2Connected = 0; /* Binary indicator if a sensor is connected or not */+ − static receiveStateCO2_t rxState = CO2RX_Ready;+ − + − + − + − float LED_Level = 0.0; /* Normalized LED value which may be used as indication for the health status of the sensor */+ − float LED_ZeroOffset = 0.0;+ − float pCO2 = 0.0;+ − + − + − + − void uartCo2_SendCmd(uint8_t CO2Cmd, uint8_t *cmdString, uint8_t *cmdLength)+ − {+ − *cmdLength = 0;+ − + − switch (CO2Cmd)+ − {+ − case CO2CMD_MODE_POLL: *cmdLength = snprintf((char*)cmdString, 10, "K 2\r\n");+ − break;+ − case CO2CMD_MODE_STREAM: *cmdLength = snprintf((char*)cmdString, 10, "K 1\r\n");+ − break;+ − case CO2CMD_CALIBRATE: *cmdLength = snprintf((char*)cmdString, 10, "G\r\n");+ − break;+ − case CO2CMD_GETDATA: *cmdLength = snprintf((char*)cmdString, 10, "Q\r\n");+ − break;+ − case CO2CMD_GETSCALE: *cmdLength = snprintf((char*)cmdString, 10, ".\r\n");+ − break;+ − default: *cmdLength = 0;+ − break;+ − }+ − if(cmdLength != 0)+ − {+ − UART_SendCmdString(cmdString);+ − }+ − }+ − + − + − void uartCo2_Control(void)+ − {+ − static uint8_t cmdString[10];+ − static uint8_t cmdLength = 0;+ − static uint8_t lastComState = 0;+ − + − uint8_t activeSensor = externalInterface_GetActiveUartSensor();+ − uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);+ − + − uint8_t *pmap = externalInterface_GetSensorMapPointer(0);+ − + − + − if(localComState == UART_CO2_ERROR)+ − {+ − localComState = lastComState;+ − }+ − + − if(localComState == UART_CO2_INIT)+ − {+ − CO2Connected = 0;+ − externalInterface_SetCO2Scale(0.0);+ − UART_ReadData(SENSOR_CO2, 1); /* flush buffer */+ − UART_StartDMA_Receiption(&Uart1Ctrl);+ − localComState = UART_CO2_SETUP;+ − }+ − if(localComState == UART_CO2_SETUP)+ − {+ − if(externalInterface_GetCO2Scale() == 0.0)+ − {+ − uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);+ − }+ − else+ − {+ − localComState = UART_CO2_IDLE;+ − }+ − }+ − else+ − {+ − if(localComState == UART_CO2_CALIBRATE)+ − {+ − uartCo2_SendCmd(CO2CMD_CALIBRATE, cmdString, &cmdLength);+ − localComState = UART_CO2_IDLE;+ − }+ − else if(pmap[EXT_INTERFACE_SENSOR_CNT-1] == SENSOR_MUX) /* sensor is working in polling mode if mux is connected to avoid interference with other sensors */+ − {+ − //if(cmdLength == 0) /* poll data */+ − if(localComState == UART_CO2_IDLE)+ − {+ − if(externalInterface_GetCO2Scale() == 0.0)+ − {+ − uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);+ − localComState = UART_CO2_SETUP;+ − }+ − else+ − {+ − uartCo2_SendCmd(CO2CMD_GETDATA, cmdString, &cmdLength);+ − localComState = UART_CO2_OPERATING;+ − }+ − }+ − else /* resend last command */+ − {+ − UART_SendCmdString(cmdString);+ − cmdLength = 0;+ − }+ − }+ − else+ − {+ − localComState = UART_CO2_OPERATING; /* sensor in streaming mode if not connected to mux => operating */+ − UART_StartDMA_Receiption(&Uart1Ctrl);+ − }+ − }+ − lastComState = localComState;+ − externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);+ − }+ − + − + − void uartCo2_ProcessData(uint8_t data)+ − {+ − static uint8_t dataType = 0;+ − static uint32_t dataValue = 0;+ − uint8_t activeSensor = externalInterface_GetActiveUartSensor();+ − uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);+ − + − if(rxState == CO2RX_Ready) /* identify data content */+ − {+ − switch(data)+ − {+ − case 'G':+ − case 'l':+ − case 'D':+ − case 'Z':+ − case '.': dataType = data;+ − rxState = CO2RX_Data0;+ − dataValue = 0;+ − break;+ − case '?': localComState = UART_CO2_ERROR;+ − break;+ − default: /* unknown or corrupted => ignore */+ − break;+ − }+ − }+ − else if((data >= '0') && (data <= '9'))+ − {+ − if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data4))+ − {+ − dataValue = dataValue * 10 + (data - '0');+ − rxState++;+ − if(rxState == CO2RX_Data5)+ − {+ − rxState = CO2RX_DataComplete;+ − }+ − }+ − else /* protocol error data has max 5 digits */+ − {+ − if(rxState != CO2RX_DataComplete) /* commands will not answer with number values */+ − {+ − rxState = CO2RX_Ready;+ − }+ − }+ − }+ − else if((data == ' ') || (data == '\n')) /* Abort data detection */+ − {+ − if(rxState == CO2RX_DataComplete)+ − {+ − CO2Connected = 1;+ − if(localComState == UART_CO2_SETUP)+ − {+ − if(dataType == '.')+ − {+ − localComState = UART_CO2_IDLE;+ − }+ − }+ − else+ − {+ − localComState = UART_CO2_IDLE;+ − }+ − if(externalInterface_GetCO2State() == 0)+ − {+ − externalInterface_SetCO2State(EXT_INTERFACE_33V_ON);+ − }+ − switch(dataType)+ − {+ − case 'D': externalInterface_SetCO2SignalStrength(dataValue);+ − break;+ − case 'l': LED_ZeroOffset = dataValue;+ − break;+ − case 'Z': externalInterface_SetCO2Value(dataValue);+ − break;+ − case '.': externalInterface_SetCO2Scale(dataValue);+ − break;+ − default: rxState = CO2RX_Ready;+ − break;+ − }+ − rxState = CO2RX_Ready;+ − }+ − if(rxState != CO2RX_Data0) /* reset state machine because message in wrong format */+ − {+ − rxState = CO2RX_Ready;+ − }+ − }+ − else+ − {+ − if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data4))+ − {+ − rxState = CO2RX_Ready; /* numerical data expected => abort */+ − }+ − }+ − externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);+ − }+ − + − uint8_t uartCo2_isSensorConnected()+ − {+ − return CO2Connected;+ − }+ − + − #endif+ − + −
