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Fix: PMS5003T only return positive temperature value

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This commit is contained in:
Phat Nguyen
2024-08-15 09:10:48 +07:00
parent 1a347e9cfe
commit 5edb21cfe9
2 changed files with 32 additions and 21 deletions
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48
src/PMS/PMS.cpp
View File

@ -3,7 +3,7 @@
/**
* @brief Init and check that sensor has connected
*
*
* @param stream UART stream
* @return true Sucecss
* @return false Failure
@ -86,7 +86,7 @@ void PMSBase::handle() {
case 2: {
buf[bufIndex++] = value;
if (bufIndex >= 4) {
len = toValue(&buf[2]);
len = toI16(&buf[2]);
if (len != 28) {
// Serial.printf("Got good bad len %d\r\n", len);
len += 4;
@ -152,98 +152,98 @@ bool PMSBase::isFailed(void) { return failed; }
*
* @return uint16_t
*/
uint16_t PMSBase::getRaw0_1(void) { return toValue(&package[4]); }
uint16_t PMSBase::getRaw0_1(void) { return toU16(&package[4]); }
/**
* @brief Read PMS 2.5 ug/m3 with CF = 1 PM estimates
*
* @return uint16_t
*/
uint16_t PMSBase::getRaw2_5(void) { return toValue(&package[6]); }
uint16_t PMSBase::getRaw2_5(void) { return toU16(&package[6]); }
/**
* @brief Read PMS 10 ug/m3 with CF = 1 PM estimates
*
* @return uint16_t
*/
uint16_t PMSBase::getRaw10(void) { return toValue(&package[8]); }
uint16_t PMSBase::getRaw10(void) { return toU16(&package[8]); }
/**
* @brief Read PMS 0.1 ug/m3
*
* @return uint16_t
*/
uint16_t PMSBase::getPM0_1(void) { return toValue(&package[10]); }
uint16_t PMSBase::getPM0_1(void) { return toU16(&package[10]); }
/**
* @brief Read PMS 2.5 ug/m3
*
* @return uint16_t
*/
uint16_t PMSBase::getPM2_5(void) { return toValue(&package[12]); }
uint16_t PMSBase::getPM2_5(void) { return toU16(&package[12]); }
/**
* @brief Read PMS 10 ug/m3
*
* @return uint16_t
*/
uint16_t PMSBase::getPM10(void) { return toValue(&package[14]); }
uint16_t PMSBase::getPM10(void) { return toU16(&package[14]); }
/**
* @brief Get numnber concentrations over 0.3 um/0.1L
*
* @return uint16_t
*/
uint16_t PMSBase::getCount0_3(void) { return toValue(&package[16]); }
uint16_t PMSBase::getCount0_3(void) { return toU16(&package[16]); }
/**
* @brief Get numnber concentrations over 0.5 um/0.1L
*
* @return uint16_t
*/
uint16_t PMSBase::getCount0_5(void) { return toValue(&package[18]); }
uint16_t PMSBase::getCount0_5(void) { return toU16(&package[18]); }
/**
* @brief Get numnber concentrations over 1.0 um/0.1L
*
* @return uint16_t
*/
uint16_t PMSBase::getCount1_0(void) { return toValue(&package[20]); }
uint16_t PMSBase::getCount1_0(void) { return toU16(&package[20]); }
/**
* @brief Get numnber concentrations over 2.5 um/0.1L
*
* @return uint16_t
*/
uint16_t PMSBase::getCount2_5(void) { return toValue(&package[22]); }
uint16_t PMSBase::getCount2_5(void) { return toU16(&package[22]); }
/**
* @brief Get numnber concentrations over 5.0 um/0.1L (only PMS5003)
*
* @return uint16_t
*/
uint16_t PMSBase::getCount5_0(void) { return toValue(&package[24]); }
uint16_t PMSBase::getCount5_0(void) { return toU16(&package[24]); }
/**
* @brief Get numnber concentrations over 10.0 um/0.1L (only PMS5003)
*
* @return uint16_t
*/
uint16_t PMSBase::getCount10(void) { return toValue(&package[26]); }
uint16_t PMSBase::getCount10(void) { return toU16(&package[26]); }
/**
* @brief Get temperature (only PMS5003T)
*
* @return uint16_t
*/
uint16_t PMSBase::getTemp(void) { return toValue(&package[24]); }
int16_t PMSBase::getTemp(void) { return toI16(&package[24]); }
/**
* @brief Get humidity (only PMS5003T)
*
* @return uint16_t
*/
uint16_t PMSBase::getHum(void) { return toValue(&package[26]); }
uint16_t PMSBase::getHum(void) { return toU16(&package[26]); }
/**
* @brief Convert PMS2.5 to US AQI unit
@ -274,9 +274,19 @@ int PMSBase::pm25ToAQI(int pm02) {
* @brief Convert two byte value to uint16_t value
*
* @param buf bytes array (must be >= 2)
* @return uint16_t
* @return int16_t
*/
uint16_t PMSBase::toValue(char *buf) { return (buf[0] << 8) | buf[1]; }
int16_t PMSBase::toI16(char *buf) {
int16_t value = buf[0];
value = (value << 8) | buf[1];
return value;
}
uint16_t PMSBase::toU16(char *buf) {
uint16_t value = buf[0];
value = (value << 8) | buf[1];
return value;
}
/**
* @brief Validate package data
@ -290,7 +300,7 @@ bool PMSBase::validate(char *buf) {
for (int i = 0; i < 30; i++) {
sum += buf[i];
}
if (sum == toValue(&buf[30])) {
if (sum == toU16(&buf[30])) {
for (int i = 0; i < 32; i++) {
package[i] = buf[i];
}

5
src/PMS/PMS.h
View File

@ -24,7 +24,7 @@ public:
uint16_t getCount10(void);
/** For PMS5003T*/
uint16_t getTemp(void);
int16_t getTemp(void);
uint16_t getHum(void);
int pm25ToAQI(int pm02);
@ -36,7 +36,8 @@ private:
bool failed = false;
uint32_t lastRead;
uint16_t toValue(char *buf);
int16_t toI16(char *buf);
uint16_t toU16(char* buf);
bool validate(char *buf);
};