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Refine PMSX003 to support PMS5003T/ST 

1. Support PMS5003T/PMS5003ST;
2. Replace data reading method;
3. Remove PMS library dependency;
4. Support smart sleeping mode to extend the sensor’s lifetime.
rfm69
Yonsm 6 years ago
parent
5ae93ef744
commit
acc314df73
1 changed files with 213 additions and 31 deletions
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  1. +213
    -31
      code/espurna/sensors/PMSX003Sensor.h

+ 213
- 31
code/espurna/sensors/PMSX003Sensor.h View File

@ -14,7 +14,158 @@
#include <PMS.h>
#include <SoftwareSerial.h>
class PMSX003Sensor : public BaseSensor {
//
#define PMS_TYPE_X003 0
#define PMS_TYPE_X003_9 1
#define PMS_TYPE_5003T 2
#define PMS_TYPE_5003ST 3
#ifndef PMS_TYPE
#define PMS_TYPE PMS_TYPE_X003
#endif
// You can enable smart sleep (read 6-times then sleep on 24-reading-cycles) to extend PMS sensor's life.
// Otherwise the default lifetime of PMS sensor is about 8000-hours/1-years.
// The PMS's fan will stop working on sleeping cycle, and will wake up on reading cycle.
#ifndef PMS_SMART_SLEEP
#define PMS_SMART_SLEEP 0
#endif
// [MAGIC][LEN][DATA9|13|17][SUM]
#if PMS_TYPE == PMS_TYPE_5003ST
#define PMS_TYPE_NAME "PMS5003ST"
#define PMS_DATA_COUNT 17
#define PMS_SLOT_COUNT 4
#define PMS_SLOT_NAMES {"PM2.5", "TEMP", "HUMI", "HCHO"}
#define PMS_SLOT_TYPES {MAGNITUDE_PM2dot5, MAGNITUDE_TEMPERATURE, MAGNITUDE_HUMIDITY, MAGNITUDE_ANALOG}
#elif PMS_TYPE == PMS_TYPE_5003T
#define PMS_TYPE_NAME "PMS5003T"
#define PMS_DATA_COUNT 13
#define PMS_SLOT_COUNT 3
#define PMS_SLOT_NAMES {"PM2.5", "TEMP", "HUMI"}
#define PMS_SLOT_TYPES {MAGNITUDE_PM2dot5, MAGNITUDE_TEMPERATURE, MAGNITUDE_HUMIDITY}
#elif PMS_TYPE == PMS_TYPE_X003_9
#define PMS_TYPE_NAME "PMSX003_9"
#define PMS_DATA_COUNT 9
#define PMS_SLOT_COUNT 3
#define PMS_SLOT_NAMES {"PM1.0", "PM2.5", "PM10"}
#define PMS_SLOT_TYPES {MAGNITUDE_PM1dot0, MAGNITUDE_PM2dot5, MAGNITUDE_PM10}
#else
#define PMS_TYPE_NAME "PMSX003"
#define PMS_DATA_COUNT 13
#define PMS_SLOT_COUNT 3
#define PMS_SLOT_NAMES {"PM1.0", "PM2.5", "PM10"}
#define PMS_SLOT_TYPES {MAGNITUDE_PM1dot0, MAGNITUDE_PM2dot5, MAGNITUDE_PM10}
#endif
#define PMS_PACKET_SIZE ((PMS_DATA_COUNT + 3) * 2)
#define PMS_PAYLOAD_SIZE (PMS_DATA_COUNT * 2 + 2)
// PMSX003 sensor utils
// Command functions copied from: https://github.com/fu-hsi/PMS/blob/master/src/PMS.cpp
// Reading function is rewrited to support flexible reading for PMS5003T/PMS5003ST
class PMSX003 {
protected:
SoftwareSerial *_serial = NULL; // Should initialized by child class
public:
// Standby mode. For low power consumption and prolong the life of the sensor.
inline void sleep() {
uint8_t command[] = { 0x42, 0x4D, 0xE4, 0x00, 0x00, 0x01, 0x73 };
_serial->write(command, sizeof(command));
}
// Operating mode. Stable data should be got at least 30 seconds after the sensor wakeup from the sleep mode because of the fan's performance.
inline void wakeUp() {
uint8_t command[] = { 0x42, 0x4D, 0xE4, 0x00, 0x01, 0x01, 0x74 };
_serial->write(command, sizeof(command));
}
// Active mode. Default mode after power up. In this mode sensor would send serial data to the host automatically.
inline void activeMode() {
uint8_t command[] = { 0x42, 0x4D, 0xE1, 0x00, 0x01, 0x01, 0x71 };
_serial->write(command, sizeof(command));
}
// Passive mode. In this mode, sensor would send serial data to the host only for request.
inline void passiveMode() {
uint8_t command[] = { 0x42, 0x4D, 0xE1, 0x00, 0x00, 0x01, 0x70 };
_serial->write(command, sizeof(command));
}
// Request read, ONLY needed in Passive Mode!!
inline void requestRead() {
uint8_t command[] = { 0x42, 0x4D, 0xE2, 0x00, 0x00, 0x01, 0x71 };
_serial->write(command, sizeof(command));
}
// Read sensor's data
bool readData(uint16_t data[PMS_DATA_COUNT]) {
do
{
int avail = _serial->available();
#if SENSOR_DEBUG
//debugSend("%s: Packet available = %d\n", PMS_TYPE_NAME, avail);
#endif
if (avail < PMS_PACKET_SIZE)
break;
if (_serial->read() == 0x42 && _serial->read() == 0x4D)
{
uint16_t sum = 0x42 + 0x4D;
uint16_t size = read16(sum);
#if SENSOR_DEBUG
debugSend("%s: Payload size = %d\n", PMS_TYPE_NAME, size);
#endif
if (size != PMS_PAYLOAD_SIZE)
{
#if SENSOR_DEBUG
debugSend(("%s: Payload size != %d \n"), PMS_TYPE_NAME, PMS_PAYLOAD_SIZE);
#endif
break;
}
for (int i = 0; i < PMS_DATA_COUNT; i++)
{
data[i] = read16(sum);
#if SENSOR_DEBUG
//debugSend(("%s: data[%d] = %d\n"), PMS_TYPE_NAME, i, data[i]);
#endif
}
uint16_t checksum = read16();
#if SENSOR_DEBUG
debugSend(("%s: Sum=%04X, Checksum=%04X\n"), PMS_TYPE_NAME, sum, checksum);
#endif
if (sum == checksum)
{
return true;
}
break;
}
}
while (true);
return false;
}
private:
// Read 16-bit
inline uint16_t read16() {
return ((uint16_t) _serial->read()) << 8 | _serial->read();
}
// Read 16-bit and calculate checksum
uint16_t read16(uint16_t &checksum) {
uint8_t high = _serial->read();
uint8_t low = _serial->read();
checksum += high;
checksum += low;
return ((uint16_t) high) << 8 | low;
}
};
class PMSX003Sensor : public BaseSensor, PMSX003 {
public:
@ -23,13 +174,12 @@ class PMSX003Sensor : public BaseSensor {
// ---------------------------------------------------------------------
PMSX003Sensor(): BaseSensor() {
_count = 3;
_count = PMS_SLOT_COUNT;
_sensor_id = SENSOR_PMSX003_ID;
}
~PMSX003Sensor() {
if (_serial) delete _serial;
if (_pms) delete _pms;
}
void setRX(unsigned char pin_rx) {
@ -64,13 +214,12 @@ class PMSX003Sensor : public BaseSensor {
if (!_dirty) return;
if (_serial) delete _serial;
if (_pms) delete _pms;
_serial = new SoftwareSerial(_pin_rx, _pin_tx, false, 32);
_serial = new SoftwareSerial(_pin_rx, _pin_tx, false, 64);
_serial->enableIntTx(false);
_serial->begin(9600);
_pms = new PMS(* _serial);
_pms->passiveMode();
//_serial->enableRx(true); // TODO: Test
passiveMode();
_startTime = millis();
_ready = true;
@ -81,16 +230,15 @@ class PMSX003Sensor : public BaseSensor {
// Descriptive name of the sensor
String description() {
char buffer[28];
snprintf(buffer, sizeof(buffer), "PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
snprintf(buffer, sizeof(buffer), "%s @ SwSerial(%u,%u)", PMS_TYPE_NAME, _pin_rx, _pin_tx);
return String(buffer);
}
// Descriptive name of the slot # index
String slot(unsigned char index) {
char buffer[36] = {0};
if (index == 0) snprintf(buffer, sizeof(buffer), "PM1.0 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
if (index == 1) snprintf(buffer, sizeof(buffer), "PM2.5 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
if (index == 2) snprintf(buffer, sizeof(buffer), "PM10 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
const static char *_slot_names[] = PMS_SLOT_NAMES;
snprintf(buffer, sizeof(buffer), "%s @ %s @ SwSerial(%u,%u)", _slot_names[index], PMS_TYPE_NAME, _pin_rx, _pin_tx);
return String(buffer);
}
@ -103,10 +251,8 @@ class PMSX003Sensor : public BaseSensor {
// Type for slot # index
unsigned char type(unsigned char index) {
if (index == 0) return MAGNITUDE_PM1dot0;
if (index == 1) return MAGNITUDE_PM2dot5;
if (index == 2) return MAGNITUDE_PM10;
return MAGNITUDE_NONE;
const static unsigned char _slot_types[] = PMS_SLOT_TYPES;
return _slot_types[index];
}
void pre() {
@ -118,35 +264,71 @@ class PMSX003Sensor : public BaseSensor {
_error = SENSOR_ERROR_OK;
if(_pms->read(_data)) {
_pm1dot0 = _data.PM_AE_UG_1_0;
_pm2dot5 = _data.PM_AE_UG_2_5;
_pm10 = _data.PM_AE_UG_10_0;
#if PMS_SMART_SLEEP
unsigned int readCycle;
if (_readCount++ > 30) {
readCycle = _readCount % 30;
if (readCycle == 0) {
#if SENSOR_DEBUG
debugSend("%s: Wake up: %d\n", PMS_TYPE_NAME, _readCount);
#endif
wakeUp();
return;
} else if (readCycle == 1) {
requestRead();
} else if (readCycle > 6) {
return;
}
} else {
readCycle = -1;
}
#endif
uint16_t data[PMS_DATA_COUNT];
if (readData(data)) {
#if PMS_TYPE == PMS_TYPE_5003ST
_slot_values[0] = data[4];
_slot_values[1] = (double)data[13] / 10;
_slot_values[2] = (double)data[14] / 10;
_slot_values[3] = (double)data[12] / 1000;
#elif PMS_TYPE == PMS_TYPE_5003T
_slot_values[0] = data[4];
_slot_values[1] = (double)data[10] / 10;
_slot_values[2] = (double)data[11] / 10;
#else
_slot_values[0] = data[3];
_slot_values[1] = data[4];
_slot_values[2] = data[5];
#endif
}
_pms->requestRead();
#if PMS_SMART_SLEEP
if (readCycle == 6) {
sleep();
#if SENSOR_DEBUG
debugSend("%s: Enter sleep mode: %d\n", PMS_TYPE_NAME, _readCount);
#endif
return;
}
#endif
requestRead();
}
// Current value for slot # index
double value(unsigned char index) {
if(index == 0) return _pm1dot0;
if(index == 1) return _pm2dot5;
if(index == 2) return _pm10;
return 0;
return _slot_values[index];
}
protected:
unsigned int _pm1dot0;
unsigned int _pm2dot5;
unsigned int _pm10;
unsigned int _pin_rx;
unsigned int _pin_tx;
unsigned long _startTime;
SoftwareSerial * _serial = NULL;
PMS * _pms = NULL;
PMS::DATA _data;
double _slot_values[PMS_SLOT_COUNT] = {0};
#if PMS_SMART_SLEEP
unsigned int _readCount = 0;
#endif
};
#endif // SENSOR_SUPPORT && PMSX003_SUPPORT

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