Maxim Integrated's IoT development kit.
Dependencies: MAX30101 MAX30003 MAX113XX_Pixi MAX30205 max32630fthr USBDevice
Diff: main.cpp
- Revision:
- 10:dbeda3ffffb8
- Parent:
- 7:2c9c8b6a28a7
- Child:
- 11:04292fba5078
--- a/main.cpp Fri Apr 27 17:22:04 2018 +0300 +++ b/main.cpp Fri May 04 11:51:53 2018 +0300 @@ -178,13 +178,13 @@ void buttonPressedCallback(void) { - eventQueue.call(Callback<void(uint8_t)>(&updateButtonState), ++buttonPressedCount); + eventQueue.call(Callback<void(uint8_t)>(&updateButtonState), ++buttonPressedCount); } void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { printf("disc\r\n"); - BLE::Instance().gap().startAdvertising(); // restart advertising + BLE::Instance().gap().startAdvertising(); // restart advertising } /* Connection */ @@ -200,7 +200,7 @@ void onBleInitError(BLE &ble, ble_error_t error) { - /* Initialization error handling should go here */ + /* Initialization error handling should go here */ } /** @@ -212,49 +212,49 @@ void onDataWrittenCallback(const GattWriteCallbackParams *params) { if ((params->handle == gattCharRGBLed.getValueHandle()) && (params->len >= 3)) { - rLED = (params->data[0] != 0) ? LED_OFF : LED_ON; - gLED = (params->data[1] != 0) ? LED_OFF : LED_ON; - bLED = (params->data[2] != 0) ? LED_OFF : LED_ON; - } + rLED = (params->data[0] != 0) ? LED_OFF : LED_ON; + gLED = (params->data[1] != 0) ? LED_OFF : LED_ON; + bLED = (params->data[2] != 0) ? LED_OFF : LED_ON; + } } void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) { - BLE& ble = params->ble; - ble_error_t error = params->error; + BLE& ble = params->ble; + ble_error_t error = params->error; - if (error != BLE_ERROR_NONE) { - /* In case of error, forward the error handling to onBleInitError */ - onBleInitError(ble, error); - return; - } + if (error != BLE_ERROR_NONE) { + /* In case of error, forward the error handling to onBleInitError */ + onBleInitError(ble, error); + return; + } - /* Ensure that it is the default instance of BLE */ - if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { - return; - } + /* Ensure that it is the default instance of BLE */ + if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) { + return; + } - ble.gap().onDisconnection(disconnectionCallback); - ble.gap().onConnection(connectionCallback); + ble.gap().onDisconnection(disconnectionCallback); + ble.gap().onConnection(connectionCallback); - ble.gattServer().onDataWritten(onDataWrittenCallback); + ble.gattServer().onDataWritten(onDataWrittenCallback); - ble.gattServer().addService(iotService); + ble.gattServer().addService(iotService); - /* setup advertising */ - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); - ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); - ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ - ble.gap().startAdvertising(); + /* setup advertising */ + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); + ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.gap().setAdvertisingInterval(1000); /* 1000ms. */ + ble.gap().startAdvertising(); - button.fall(buttonPressedCallback); + button.fall(buttonPressedCallback); } void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context) { - BLE &ble = BLE::Instance(); - eventQueue.call(Callback<void()>(&ble, &BLE::processEvents)); + BLE &ble = BLE::Instance(); + eventQueue.call(Callback<void()>(&ble, &BLE::processEvents)); } /****************************************************************************** @@ -262,29 +262,27 @@ ******************************************************************************/ #if defined(LIB_MAX30205) -#define MAX30205_DATA_READ_PERIOD_MSEC 5000 - MAX30205 max30205_temp_sensor(i2c1, 0x48); /* New MAX30205 on i2cBus */ Thread thread_max30205_reader; bool max30205_config(MAX30205 &temp_sensor){ - int rc = 0; + int rc = 0; - MAX30205::Configuration_u temp_cfg; - temp_cfg.all = 0; - temp_cfg.bits.shutdown = 1; // Shutdown mode - temp_cfg.bits.comp_int = 1; // Interrupt mode - temp_cfg.bits.os_polarity = 0; // Active low OS - temp_cfg.bits.fault_queue = 1; // Two faults for OS condition - temp_cfg.bits.data_format = 0; // Normal data format - temp_cfg.bits.timeout = 0; // I2C timeout reset enabled - temp_cfg.bits.one_shot = 0; // Start with one-shot = 0 + MAX30205::Configuration_u temp_cfg; + temp_cfg.all = 0; + temp_cfg.bits.shutdown = 1; // Shutdown mode + temp_cfg.bits.comp_int = 1; // Interrupt mode + temp_cfg.bits.os_polarity = 0; // Active low OS + temp_cfg.bits.fault_queue = 1; // Two faults for OS condition + temp_cfg.bits.data_format = 0; // Normal data format + temp_cfg.bits.timeout = 0; // I2C timeout reset enabled + temp_cfg.bits.one_shot = 0; // Start with one-shot = 0 - rc = temp_sensor.writeConfiguration(temp_cfg); // Write config to MAX30205 + rc = temp_sensor.writeConfiguration(temp_cfg); // Write config to MAX30205 - return rc; + return rc; } void max30205_reader_task() @@ -334,17 +332,17 @@ #define MAX30101_IRQ_ASSERTED_ID 1 //variable for the algorithm -uint16_t sampleRate =100; -uint16_t compSpO2=1; -int16_t ir_ac_comp =0; -int16_t red_ac_comp=0; -int16_t green_ac_comp=0; -int16_t ir_ac_mag=0; -int16_t red_ac_mag=0; -int16_t green_ac_mag=0; -uint16_t HRbpm2=0; -uint16_t SpO2B=0; -uint16_t DRdy=0; +uint16_t sampleRate = 100; +uint16_t compSpO2 = 1; +int16_t ir_ac_comp = 0; +int16_t red_ac_comp = 0; +int16_t green_ac_comp = 0; +int16_t ir_ac_mag = 0; +int16_t red_ac_mag = 0; +int16_t green_ac_mag = 0; +uint16_t HRbpm2 = 0; +uint16_t SpO2B = 0; +uint16_t DRdy = 0; //declare large variables outside of main uint32_t redData[500];//set array to max fifo size @@ -355,99 +353,95 @@ bool max30101_config(MAX30101 &op_sensor) { - - //Reset Device - MAX30101::ModeConfiguration_u modeConfig; - modeConfig.all = 0; - modeConfig.bits.reset = 1; - modeConfig.bits.mode = MAX30101::MultiLedMode; // Sets SPO2 Mode - int32_t rc = op_sensor.setModeConfiguration(modeConfig); + //Reset Device + MAX30101::ModeConfiguration_u modeConfig; + modeConfig.all = 0; + modeConfig.bits.reset = 1; + modeConfig.bits.mode = MAX30101::MultiLedMode; // Sets SPO2 Mode + int32_t rc = op_sensor.setModeConfiguration(modeConfig); - //enable MAX30101 interrupts - MAX30101::InterruptBitField_u ints; - if(rc == 0) { - ints.all = 0; - ints.bits.a_full = 1; // Enable FIFO almost full interrupt - ints.bits.ppg_rdy =1; //Enables an interrupt when a new sample is ready - rc = op_sensor.enableInterrupts(ints); - } + //enable MAX30101 interrupts + MAX30101::InterruptBitField_u ints; + if (rc == 0) { + ints.all = 0; + ints.bits.a_full = 1; // Enable FIFO almost full interrupt + ints.bits.ppg_rdy =1; //Enables an interrupt when a new sample is ready + rc = op_sensor.enableInterrupts(ints); + } - //configure FIFO - MAX30101::FIFO_Configuration_u fifoConfig; - if(rc == 0) { - fifoConfig.all = 0; - fifoConfig.bits.fifo_a_full = 10; // Max level of 17 samples - fifoConfig.bits.sample_average = MAX30101::AveragedSamples_0;// Average 0 samples - rc = op_sensor.setFIFOConfiguration(fifoConfig); - } + //configure FIFO + MAX30101::FIFO_Configuration_u fifoConfig; + if (rc == 0) { + fifoConfig.all = 0; + fifoConfig.bits.fifo_a_full = 10; // Max level of 17 samples + fifoConfig.bits.sample_average = MAX30101::AveragedSamples_0;// Average 0 samples + rc = op_sensor.setFIFOConfiguration(fifoConfig); + } - MAX30101::SpO2Configuration_u spo2Config; - if(rc == 0) { - spo2Config.all = 0; // clears register - spo2Config.bits.spo2_adc_range = 1; //sets resolution to 4096 nAfs - spo2Config.bits.spo2_sr = MAX30101::SR_100_Hz; // SpO2 SR = 100Hz - spo2Config.bits.led_pw = MAX30101::PW_3; // 18-bit ADC resolution ~400us - rc = op_sensor.setSpO2Configuration(spo2Config); - } + MAX30101::SpO2Configuration_u spo2Config; + if (rc == 0) { + spo2Config.all = 0; // clears register + spo2Config.bits.spo2_adc_range = 1; //sets resolution to 4096 nAfs + spo2Config.bits.spo2_sr = MAX30101::SR_100_Hz; // SpO2 SR = 100Hz + spo2Config.bits.led_pw = MAX30101::PW_3; // 18-bit ADC resolution ~400us + rc = op_sensor.setSpO2Configuration(spo2Config); + } - //Set time slots for LEDS - MAX30101::ModeControlReg_u multiLED; - if (rc == 0) { - //sets timing for control register 1 - multiLED.bits.lo_slot=1; - multiLED.bits.hi_slot=2; - rc = op_sensor.setMultiLEDModeControl(MAX30101::ModeControlReg1, multiLED); - if (rc == 0) { - multiLED.bits.lo_slot=3; - multiLED.bits.hi_slot=0; - rc = op_sensor.setMultiLEDModeControl(MAX30101::ModeControlReg2, multiLED); - } - } + //Set time slots for LEDS + MAX30101::ModeControlReg_u multiLED; + if (rc == 0) { + //sets timing for control register 1 + multiLED.bits.lo_slot=1; + multiLED.bits.hi_slot=2; + rc = op_sensor.setMultiLEDModeControl(MAX30101::ModeControlReg1, multiLED); + if (rc == 0) { + multiLED.bits.lo_slot=3; + multiLED.bits.hi_slot=0; + rc = op_sensor.setMultiLEDModeControl(MAX30101::ModeControlReg2, multiLED); + } + } - //Set LED drive currents - if(rc == 0) { - // Heart Rate only, 1 LED channel, Pulse amp. = ~7mA - rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x24); - //To include SPO2, 2 LED channel, Pulse amp. ~7mA - if (rc == 0) { - rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED2_PA, 0x24); - } - if (rc == 0) { - rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED3_PA, 0x24); - } + //Set LED drive currents + if (rc == 0) { + // Heart Rate only, 1 LED channel, Pulse amp. = ~7mA + rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED1_PA, 0x24); + //To include SPO2, 2 LED channel, Pulse amp. ~7mA + if (rc == 0) { + rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED2_PA, 0x24); + } + if (rc == 0) { + rc = op_sensor.setLEDPulseAmplitude(MAX30101::LED3_PA, 0x24); + } + } - } + //Set operating mode + modeConfig.all = 0; + if (rc == 0) { + modeConfig.bits.mode = MAX30101::MultiLedMode; // Sets multiLED mode + rc = op_sensor.setModeConfiguration(modeConfig); + } - //Set operating mode - modeConfig.all = 0; - if(rc == 0) { - modeConfig.bits.mode = MAX30101::MultiLedMode; // Sets multiLED mode - rc = op_sensor.setModeConfiguration(modeConfig); - } - - - return rc; + return rc; } void max30101wing_pmic_config(I2C & i2c_bus, DigitalOut & pmic_en) { - - const uint8_t PMIC_ADRS = 0x54; - const uint8_t BBB_EXTRA_ADRS = 0x1C; - const uint8_t BOOST_VOLTAGE = 0x05; + const uint8_t PMIC_ADRS = 0x54; + const uint8_t BBB_EXTRA_ADRS = 0x1C; + const uint8_t BOOST_VOLTAGE = 0x05; - char data_buff[] = {BBB_EXTRA_ADRS, 0x40}; //BBBExtra register address - //and data to enable passive - //pull down. - i2c_bus.write(PMIC_ADRS, data_buff,2); //write to BBBExtra register + char data_buff[] = {BBB_EXTRA_ADRS, 0x40}; //BBBExtra register address + //and data to enable passive + //pull down. + i2c_bus.write(PMIC_ADRS, data_buff,2); //write to BBBExtra register - data_buff[0] = BOOST_VOLTAGE; - data_buff[1] = 0x08; //Boost voltage configuration - //register followed by data - //to set voltage to 4.5V 1f - pmic_en = 0; //disables VLED 08 - i2c_bus.write(PMIC_ADRS, data_buff,2); //write to BBBExtra register - pmic_en = 1; //enables VLED + data_buff[0] = BOOST_VOLTAGE; + data_buff[1] = 0x08; //Boost voltage configuration + //register followed by data + //to set voltage to 4.5V 1f + pmic_en = 0; //disables VLED 08 + i2c_bus.write(PMIC_ADRS, data_buff,2); //write to BBBExtra register + pmic_en = 1; //enables VLED } /* Op Sensor FIFO nearly full callback */ @@ -472,8 +466,6 @@ uint8_t fifoData[MAX30101::MAX_FIFO_BYTES]; uint16_t idx, readBytes; - int32_t opSample; - uint32_t sample; uint16_t HRTemp; uint16_t spo2Temp; @@ -488,9 +480,9 @@ daplink.printf("Starting MAX30101 HeartRate / SPO2 Demo Application...\r\n"); daplink.printf("Please wait a few seconds while data is being collected.\r\n"); - Timer bleNotifyTimer; + Timer bleNotifyTimer; - bleNotifyTimer.start(); + bleNotifyTimer.start(); while (1) { if (rc == 0) { @@ -593,84 +585,81 @@ Thread thread_max30003_reader; void ecg_config(MAX30003& ecgAFE) { - - // Reset ECG to clear registers - ecgAFE.writeRegister( MAX30003::SW_RST , 0); + // Reset ECG to clear registers + ecgAFE.writeRegister( MAX30003::SW_RST , 0); - // General config register setting - MAX30003::GeneralConfiguration_u CNFG_GEN_r; - CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel - CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input - CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input - CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias - CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA - CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection - ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); + // General config register setting + MAX30003::GeneralConfiguration_u CNFG_GEN_r; + CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel + CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input + CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input + CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias + CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA + CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection + ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); - // ECG Config register setting - MAX30003::ECGConfiguration_u CNFG_ECG_r; - CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz - CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz - CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V - CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps - ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); + // ECG Config register setting + MAX30003::ECGConfiguration_u CNFG_ECG_r; + CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz + CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz + CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V + CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps + ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); + + + //R-to-R configuration + MAX30003::RtoR1Configuration_u CNFG_RTOR_r; + CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection + ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); - //R-to-R configuration - MAX30003::RtoR1Configuration_u CNFG_RTOR_r; - CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection - ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); - - - //Manage interrupts register setting - MAX30003::ManageInterrupts_u MNG_INT_r; - MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples - MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back - ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); + //Manage interrupts register setting + MAX30003::ManageInterrupts_u MNG_INT_r; + MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples + MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back + ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); - //Enable interrupts register setting - MAX30003::EnableInterrupts_u EN_INT_r; - EN_INT_r.all = 0; - EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt - EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt - EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup - ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); + //Enable interrupts register setting + MAX30003::EnableInterrupts_u EN_INT_r; + EN_INT_r.all = 0; + EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt + EN_INT_r.bits.en_rrint = 0; // Disable R-to-R interrupt + EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup + ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); - //Dyanmic modes config - MAX30003::ManageDynamicModes_u MNG_DYN_r; - MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled - ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); + //Dyanmic modes config + MAX30003::ManageDynamicModes_u MNG_DYN_r; + MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled + ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); - // MUX Config - MAX30003::MuxConfiguration_u CNFG_MUX_r; - CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel - CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel - ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); + // MUX Config + MAX30003::MuxConfiguration_u CNFG_MUX_r; + CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel + CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel + ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); - return; + return; } /* ECG FIFO nearly full callback */ -//volatile bool ecgFIFOIntFlag = 0; void ecgFIFO_callback() { - thread_max30003_reader.signal_set(MAX30003_IRQ_ASSERTED_SIGNAL_ID); - //ecgFIFOIntFlag = 1; - } void max30003_reader_task() { // Constants - const int EINT_STATUS_MASK = 1 << 23; - const int FIFO_OVF_MASK = 0x7; - const int FIFO_VALID_SAMPLE_MASK = 0x0; - const int FIFO_FAST_SAMPLE_MASK = 0x1; + const int EINT_STATUS_MASK = 1 << 23; + const int FIFO_OVF_MASK = 0x7; + const int FIFO_VALID_SAMPLE_MASK = 0x0; + const int FIFO_FAST_SAMPLE_MASK = 0x1; const int ETAG_BITS_MASK = 0x7; + uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; + InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the ecgFIFO_int.fall(&ecgFIFO_callback); // ecg FIFO almost full interrupt @@ -680,12 +669,8 @@ MAX30003 ecgAFE(spiBus, P5_3); // New MAX30003 on spiBus, CS = P5_3 ecg_config(ecgAFE); // Config ECG - ecgAFE.writeRegister( MAX30003::SYNCH , 0); - uint32_t ecgFIFO, readECGSamples, idx, ETAG[32], status; - int16_t ecgSample[32]; - daplink.printf("Starting MAX30003 ECG Demo Application...\r\n"); while (1) { @@ -702,7 +687,6 @@ do { ecgFIFO = ecgAFE.readRegister( MAX30003::ECG_FIFO ); // Read FIFO - ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS_MASK; // Isolate ETAG readECGSamples++; // Increment sample counter @@ -748,94 +732,93 @@ void ecg_config(MAX30003& ecgAFE) { - // Reset ECG to clear registers - ecgAFE.writeRegister( MAX30003::SW_RST , 0); + // Reset ECG to clear registers + ecgAFE.writeRegister( MAX30003::SW_RST , 0); - // General config register setting - MAX30003::GeneralConfiguration_u CNFG_GEN_r; - CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel - CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input - CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input - CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias - CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA - CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection - ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); + // General config register setting + MAX30003::GeneralConfiguration_u CNFG_GEN_r; + CNFG_GEN_r.bits.en_ecg = 1; // Enable ECG channel + CNFG_GEN_r.bits.rbiasn = 1; // Enable resistive bias on negative input + CNFG_GEN_r.bits.rbiasp = 1; // Enable resistive bias on positive input + CNFG_GEN_r.bits.en_rbias = 1; // Enable resistive bias + CNFG_GEN_r.bits.imag = 2; // Current magnitude = 10nA + CNFG_GEN_r.bits.en_dcloff = 1; // Enable DC lead-off detection + ecgAFE.writeRegister( MAX30003::CNFG_GEN , CNFG_GEN_r.all); - // ECG Config register setting - MAX30003::ECGConfiguration_u CNFG_ECG_r; - CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz - CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz - CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V - CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps - ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); + // ECG Config register setting + MAX30003::ECGConfiguration_u CNFG_ECG_r; + CNFG_ECG_r.bits.dlpf = 1; // Digital LPF cutoff = 40Hz + CNFG_ECG_r.bits.dhpf = 1; // Digital HPF cutoff = 0.5Hz + CNFG_ECG_r.bits.gain = 3; // ECG gain = 160V/V + CNFG_ECG_r.bits.rate = 2; // Sample rate = 128 sps + ecgAFE.writeRegister( MAX30003::CNFG_ECG , CNFG_ECG_r.all); - //R-to-R configuration - MAX30003::RtoR1Configuration_u CNFG_RTOR_r; - CNFG_RTOR_r.bits.wndw = 0b0011; // WNDW = 96ms - CNFG_RTOR_r.bits.rgain = 0b1111; // Auto-scale gain - CNFG_RTOR_r.bits.pavg = 0b11; // 16-average - CNFG_RTOR_r.bits.ptsf = 0b0011; // PTSF = 4/16 - CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection - ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); + //R-to-R configuration + MAX30003::RtoR1Configuration_u CNFG_RTOR_r; + CNFG_RTOR_r.bits.wndw = 0b0011; // WNDW = 96ms + CNFG_RTOR_r.bits.rgain = 0b1111; // Auto-scale gain + CNFG_RTOR_r.bits.pavg = 0b11; // 16-average + CNFG_RTOR_r.bits.ptsf = 0b0011; // PTSF = 4/16 + CNFG_RTOR_r.bits.en_rtor = 1; // Enable R-to-R detection + ecgAFE.writeRegister( MAX30003::CNFG_RTOR1 , CNFG_RTOR_r.all); - //Manage interrupts register setting - MAX30003::ManageInterrupts_u MNG_INT_r; - MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples - MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back - ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); + //Manage interrupts register setting + MAX30003::ManageInterrupts_u MNG_INT_r; + MNG_INT_r.bits.efit = 0b00011; // Assert EINT w/ 4 unread samples + MNG_INT_r.bits.clr_rrint = 0b01; // Clear R-to-R on RTOR reg. read back + ecgAFE.writeRegister( MAX30003::MNGR_INT , MNG_INT_r.all); - //Enable interrupts register setting - MAX30003::EnableInterrupts_u EN_INT_r; - EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt - EN_INT_r.bits.en_rrint = 1; // Enable R-to-R interrupt - EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup - ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); + //Enable interrupts register setting + MAX30003::EnableInterrupts_u EN_INT_r; + EN_INT_r.bits.en_eint = 1; // Enable EINT interrupt + EN_INT_r.bits.en_rrint = 1; // Enable R-to-R interrupt + EN_INT_r.bits.intb_type = 3; // Open-drain NMOS with internal pullup + ecgAFE.writeRegister( MAX30003::EN_INT , EN_INT_r.all); - //Dyanmic modes config - MAX30003::ManageDynamicModes_u MNG_DYN_r; - MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled - ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); + //Dyanmic modes config + MAX30003::ManageDynamicModes_u MNG_DYN_r; + MNG_DYN_r.bits.fast = 0; // Fast recovery mode disabled + ecgAFE.writeRegister( MAX30003::MNGR_DYN , MNG_DYN_r.all); - // MUX Config - MAX30003::MuxConfiguration_u CNFG_MUX_r; - CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel - CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel - ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); + // MUX Config + MAX30003::MuxConfiguration_u CNFG_MUX_r; + CNFG_MUX_r.bits.openn = 0; // Connect ECGN to AFE channel + CNFG_MUX_r.bits.openp = 0; // Connect ECGP to AFE channel + ecgAFE.writeRegister( MAX30003::CNFG_EMUX , CNFG_MUX_r.all); - return; + return; } void max30003_reader_task() { - // Constants - const int EINT_STATUS = 1 << 23; - const int RTOR_STATUS = 1 << 10; - const int RTOR_REG_OFFSET = 10; - const float RTOR_LSB_RES = 0.0078125f; - const int FIFO_OVF = 0x7; - const int FIFO_VALID_SAMPLE = 0x0; - const int FIFO_FAST_SAMPLE = 0x1; - const int ETAG_BITS = 0x7; + // Constants + const int EINT_STATUS = 1 << 23; + const int RTOR_STATUS = 1 << 10; + const int RTOR_REG_OFFSET = 10; + const float RTOR_LSB_RES = 0.0078125f; + const int FIFO_OVF = 0x7; + const int FIFO_VALID_SAMPLE = 0x0; + const int FIFO_FAST_SAMPLE = 0x1; + const int ETAG_BITS = 0x7; - InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the - ecgFIFO_int.fall(&ecgFIFO_callback); // ecg FIFO almost full interrupt + uint32_t ecgFIFO, RtoR, readECGSamples, ETAG[32], status; + float BPM; + Timer bleNotifyTimer; - ecg_config(max30003); // Config ECG - - max30003.writeRegister( MAX30003::SYNCH , 0); + InterruptIn ecgFIFO_int(P5_4); // Config P5_4 as int. in for the + ecgFIFO_int.fall(&ecgFIFO_callback); // ecg FIFO almost full interrupt - uint32_t ecgFIFO, RtoR, readECGSamples, idx, ETAG[32], status; - int16_t ecgSample[32]; - float BPM; - Timer bleNotifyTimer; + ecg_config(max30003); // Config ECG - bleNotifyTimer.start(); - while (1) { + max30003.writeRegister( MAX30003::SYNCH , 0); + + bleNotifyTimer.start(); + while (1) { // Read back ECG samples from the FIFO thread_max30003_reader.signal_wait(MAX30003_IRQ_ASSERTED_SIGNAL_ID); @@ -843,7 +826,7 @@ /* Read back ECG samples from the FIFO */ status = max30003.readRegister( MAX30003::STATUS ); // Read the STATUS register - if (status & (RTOR_STATUS | EINT_STATUS) == 0) { + if ((status & (RTOR_STATUS | EINT_STATUS)) == 0) { break; } @@ -872,7 +855,6 @@ do { ecgFIFO = max30003.readRegister( MAX30003::ECG_FIFO ); // Read FIFO - ecgSample[readECGSamples] = ecgFIFO >> 8; // Isolate voltage data ETAG[readECGSamples] = ( ecgFIFO >> 3 ) & ETAG_BITS; // Isolate ETAG readECGSamples++; // Increment sample counter @@ -905,26 +887,26 @@ void max11301_reader_task() { - uint16_t adcData; - float adcVoltage; + uint16_t adcData; + float adcVoltage; - MAX113XX_I2C pixi(i2c1, MAX113XX_I2C::MAX11301, MAX113XX_I2C_ADDRESS, P5_5); + MAX113XX_I2C pixi(i2c1, MAX113XX_I2C::MAX11301, MAX113XX_I2C_ADDRESS, P5_5); - pixi.dacWrite(MAX113XX_Pixi::PORT0, 0x000); // Pixi PORT0 is -5V - pixi.dacWrite(MAX113XX_Pixi::PORT1, 0xFFF); // Pixi PORT1 is +5V + pixi.dacWrite(MAX113XX_Pixi::PORT0, 0x000); // Pixi PORT0 is -5V + pixi.dacWrite(MAX113XX_Pixi::PORT1, 0xFFF); // Pixi PORT1 is +5V - daplink.printf("Starting MAX11301 PIXI ADC Demo Application...\r\n"); + daplink.printf("Starting MAX11301 PIXI ADC Demo Application...\r\n"); - while (1) { - pixi.singleEndedADCRead(MAX113XX_Pixi::PORT9, adcData); // Read value from PORT9 - adcVoltage = -5 + 2.442e-3 * adcData; // Convert ADC val. to a voltage + while (1) { + pixi.singleEndedADCRead(MAX113XX_Pixi::PORT9, adcData); // Read value from PORT9 + adcVoltage = -5 + 2.442e-3 * adcData; // Convert ADC val. to a voltage - daplink.printf("ADC Read is : %i,\tVoltage is %1.3f V \r\n", adcData, adcVoltage); + daplink.printf("ADC Read is : %i,\tVoltage is %1.3f V \r\n", adcData, adcVoltage); - bleGattAttrWrite(gattCharADC.getValueHandle(), (uint8_t *)&adcVoltage, sizeof(adcVoltage)); + bleGattAttrWrite(gattCharADC.getValueHandle(), (uint8_t *)&adcVoltage, sizeof(adcVoltage)); - Thread::wait(MAX113XX_PIXI_BLE_NOTIFY_PERIOD_SEC * 1000); - } + Thread::wait(MAX113XX_PIXI_BLE_NOTIFY_PERIOD_SEC * 1000); + } } #endif @@ -939,7 +921,7 @@ aliveLedEventId = eventQueue.call_every(1000, blinkCallback); - daplink.printf("Initializing BLE service...\r\n"); + daplink.printf("Initializing BLE service...\r\n"); BLE &ble = BLE::Instance(); ble.onEventsToProcess(scheduleBleEventsProcessing);