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Add HM330x Particle Sensor Support (#5)

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Authored-by: Stefan Brand <seiichiro@seiichiro0185.org>
Reviewed-on: https://www.seiichiro0185.org/git/attnode/v3_firmware/pulls/5
Co-authored-by: seiichiro <seiichiro@seiichiro0185.org>
Co-committed-by: seiichiro <seiichiro@seiichiro0185.org>
This commit is contained in:
seiichiro 2021-05-02 15:11:48 +00:00
parent b173436e54
commit eac71bef2f
6 changed files with 165 additions and 0 deletions
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94
lib/HM330x/HM330x.cpp Normal file
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@ -0,0 +1,94 @@
/*
HM330x.cpp - Seeed HM330x Particle-Sensor Library
Copyright (c) 2020-2021, Stefan Brand
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <Arduino.h>
#include <inttypes.h>
#include <Wire.h>
#include "HM330x.h"
// Default Constructor
HM330x::HM330x() {};
// Initialize the Sensor
void HM330x::initialize(void) {
uint8_t retryCount = 0;
// Send select command
while (!sendCmd(HM330x_SELECT)) {
if (retryCount++ >= 0) {
return;
} else {
delay(100);
}
}
}
// Read Data From Sensor and Put Them Into the Payload Array
uint8_t HM330x::getSensorData(char *payload, uint8_t startbyte) {
uint8_t data[HM330x_DATA_LEN] = {0};
uint16_t value = 0;
// Initialize Payload with 0s
for (uint8_t i=startbyte; i < startbyte+6; i++)
payload[i] = 0;
// Get Data from the Sensors
Wire.requestFrom(HM330x_ADDR, HM330x_DATA_LEN);
if (Wire.available()) {
for (uint8_t i = 0; i<HM330x_DATA_LEN; i++)
data[i] = Wire.read();
if (calcSum(data) == data[HM330x_DATA_LEN-1]) {
for (uint8_t pos = 5; pos<8; pos++) {
value = bytesToUint16(data, pos);
uint16ToPayload(value, payload, startbyte);
startbyte += 2;
}
return startbyte;
}
}
return startbyte+6;
}
// Send only a Command
bool HM330x::sendCmd(uint8_t cmd) {
Wire.beginTransmission(HM330x_ADDR);
Wire.write(cmd);
return Wire.endTransmission();
}
// Calculate the CheckSum
uint8_t HM330x::calcSum(uint8_t bytes[]) {
uint8_t checksum = 0;
for (int i = 0; i < HM330x_DATA_LEN - 1; i++) {
checksum += bytes[i];
}
return checksum;
}
// Get Value from Sensor Bytes Array
uint16_t HM330x::bytesToUint16(uint8_t bytes[], uint8_t pos){
return bytes[pos * 2] * 0x100 + bytes[pos * 2 + 1];
}

53
lib/HM330x/HM330x.h Normal file
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@ -0,0 +1,53 @@
/*
HM330x.h - Seeed HM330x Particle-Sensor Library
Copyright (c) 2020-2021, Stefan Brand
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HM330x_H
#define HM330x_H
#include "../../include/attsensor.h"
// Sensor I2C Address
#define HM330x_ADDR 0x40
#define HM330x_SELECT 0x88
#define HM330x_DATA_LEN 29
class HM330x : public AttSensor {
private:
bool sendCmd(uint8_t cmd);
uint8_t calcSum(uint8_t bytes[]);
uint16_t bytesToUint16(uint8_t bytes[], uint8_t pos);
public:
HM330x();
HM330x(uint8_t interval, bool selfcalib);
void initialize(void);
void calibrate(void) {};
uint8_t numBytes(void) {return 6;};
uint8_t getSensorData(char *payload, uint8_t startbyte);
};
#endif

9
payload/index.html
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@ -69,6 +69,10 @@
<input type="checkbox" value="sht21" onchange="updateDecoder();">
SHT21
</label>
<label>
<input type="checkbox" value="hm330x" onchange="updateDecoder();">
HM330x
</label>
<label>
<input type="checkbox" value="ds18b20" onchange="updateDecoder();">
DS18B20
@ -105,6 +109,11 @@
{ "name": "temperature", "type": "Int32", "factor": 100, "multi": false },
{ "name": "humidity", "type": "Int32", "factor": 100, "multi": false },
],
"hm330x": [
{ "name": "pm1", "type": "UInt16", "factor": 1, "multi": false },
{ "name": "pm2_5", "type": "UInt16", "factor": 1, "multi": false },
{ "name": "pm10", "type": "UInt16", "factor": 1, "multi": false },
],
"ds18b20": [
{ "name": "t", "type": "Int16", "factor": 100, "multi": true },
]

1
platformio.ini
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@ -22,6 +22,7 @@ board_hardware.bod = disabled
## Debug Port Config ##
monitor_speed = 115200
monitor_port = /dev/ttyACM1
## LMIC Config via Build Flags ##
build_flags =

1
src/config.h.example
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@ -57,6 +57,7 @@
// #define HAS_SCD30
// #define HAS_BME280
// #define HAS_SHT21
// #define HAS_HM330x
// #define HAS_DS18B20
/**************************************************************************************************************************

7
src/main.cpp
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@ -36,6 +36,9 @@
#ifdef HAS_SHT21
#include <SHT21.h>
#endif
#ifdef HAS_HM330x
#include <HM330x.h>
#endif
#ifdef HAS_DS18B20
#include <DS18B20.h>
#endif
@ -334,6 +337,10 @@ void setup()
sensors[i] = new SHT21();
i++;
#endif
#ifdef HAS_HM330x
sensors[i] = new HM330x();
i++;
#endif
#ifdef HAS_DS18B20
sensors[i] = new DS18B20(DS18B20_PIN, DS18B20_RES);
i++;