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About huytyskland
since
07-20-2022
09-23-2022
huytyskland
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09-09-2022
10:39 AM
Hello Robin, Thank you for your response. I figure that the system in LoRaWAN_End_Node example operates based on tasks. From that, I plan to divide the operation of BME688 into 2 tasks: 1 task for BME688 initialization, 1 task for obtaining sensor data. The task of initialization is: int8_t rslt = bme68x_interface_init(&bme, BME68X_I2C_INTF);
//bme68x_check_rslt("bme68x_interface_init", rslt);
// UART_Transmit_IT("/init\n");
rslt = bme68x_init(&bme);
//Set up the measurement
conf.filter = BME68X_FILTER_OFF;
conf.odr = BME68X_ODR_NONE;
conf.os_hum = BME68X_OS_16X;
conf.os_pres = BME68X_OS_1X;
conf.os_temp = BME68X_OS_2X;
rslt = bme68x_set_conf(&conf, &bme);
heatr_conf.enable = BME68X_ENABLE;
heatr_conf.heatr_temp = 300;
heatr_conf.heatr_dur = 100;
rslt = bme68x_set_heatr_conf(BME68X_SEQUENTIAL_MODE, &heatr_conf, &bme);
rslt = bme68x_set_op_mode(BME68X_SEQUENTIAL_MODE, &bme); The task of data obtaining: struct bme68x_data data;
uint32_t del_period;
uint8_t n_fields;
del_period = bme68x_get_meas_dur(BME68X_SEQUENTIAL_MODE, &conf, &bme) + (heatr_conf.heatr_dur * 1000);
bme.delay_us(del_period, bme.intf_ptr);
int8_t rslt = bme68x_get_data(BME68X_SEQUENTIAL_MODE, &data, &n_fields, &bme);
senTemp = data.temperature;
senPres = data.pressure;
senHumid = data.humidity;
senGas = data.gas_resistance; Do you think these 2 tasks can cover the operation of BME688 or I need more?
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09-08-2022
09:02 AM
Hello @BSTRobin Thank you for your response. Right now I can intergrate BME688 to the my board and use it to measure temperature/gas/pressure/humidity with no difficulty at all. However, the software for that system runs only the BME688 related tasks. My issue occured when I implemented the code of BME688 (the code that I took from my previously mentioned system - This code refered from both F4 example and this example) into an project of my board (LoRaWAN_End_Node project written by STM developers). The issue happened. So I think one of them blocked each other and stopped the program from continuing. Kind regards, Huy Nguyen.
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09-07-2022
06:47 PM
Hello everyone, Currently, I am working with an IoT application on the board Nucleo-WL55JC1 with the sensor BME688. The example I am using is LoRaWAN_End_Node downloaded from STM32Cube MX. What I did: I initialized the the BME688 and set up some configuration after the initialization of MX_LoRaWAN_Init(). I, then, set up some configuration outside the while loop. I "extern"ed the variables below so that I can used them elsewhere: struct bme68x_dev bme;
struct bme68x_conf conf;
struct bme68x_heatr_conf heatr_conf; Order of initialization are below: /* Initialize all configured peripherals */
MX_GPIO_Init();
MX_LoRaWAN_Init();
MX_I2C3_Init();
/* USER CODE BEGIN 2 */
int8_t rslt = bme68x_interface_init(&bme, BME68X_I2C_INTF);
//bme68x_check_rslt("bme68x_interface_init", rslt);
// UART_Transmit_IT("/init\n");
rslt = bme68x_init(&bme);
//Set up the measurement
conf.filter = BME68X_FILTER_OFF;
conf.odr = BME68X_ODR_NONE;
conf.os_hum = BME68X_OS_16X;
conf.os_pres = BME68X_OS_1X;
conf.os_temp = BME68X_OS_2X;
rslt = bme68x_set_conf(&conf, &bme);
heatr_conf.enable = BME68X_ENABLE;
heatr_conf.heatr_temp = 300;
heatr_conf.heatr_dur = 100;
rslt = bme68x_set_heatr_conf(BME68X_SEQUENTIAL_MODE, &heatr_conf, &bme);
rslt = bme68x_set_op_mode(BME68X_SEQUENTIAL_MODE, &bme); For obtaining the temperature/pressure/humidity/gas level, I got the data of the sensor in the function SendTxData in the file lora_app.c: struct bme68x_data data;
uint32_t del_period;
uint8_t n_fields;
#ifdef CAYENNE_LPP
uint8_t channel = 0;
#else
uint16_t pressure = 0;
int16_t temperature = 0;
uint16_t humidity = 0;
uint32_t i = 0;
int32_t latitude = 0;
int32_t longitude = 0;
uint16_t altitudeGps = 0;
#endif /* CAYENNE_LPP */
//EnvSensors_Read(&sensor_data);
del_period = bme68x_get_meas_dur(BME68X_SEQUENTIAL_MODE, &conf, &bme) + (heatr_conf.heatr_dur * 1000);
bme.delay_us(del_period, bme.intf_ptr);
int8_t rslt = bme68x_get_data(BME68X_SEQUENTIAL_MODE, &data, &n_fields, &bme);
float senTemp = data.temperature;
float senPres = data.pressure;
float senHumid = data.humidity; The problem: as in the code, I set the sensor to work in sequential mode, however, the whole setup stopped working after the first measurement. The same thing happened when I set the sensor to work in parallel mode. Sleep mode worked okay and for Forced mode, I could achieve the first measurement before the sensor turned to sleep mode (correct). (the end device started the first measurement and stopped at that point). Question: Where should I start tracking the problem or how do I fix this problem? I hope to have responses from you. Thank you very much, Huy Nguyen.
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09-07-2022
06:12 PM
Hello Robin, My apologies for replying you this late. It turns out that the way I implement was correct but somehow the tool (Visual Code) I used had some issue which I had no idea. Later I changed to STM32Cube IDE and it worked great without any issue. Thank you very much for your response, Huy Nguyen.
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