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Workaround für HM3301 to Get Valid Data After Sleeping

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This commit is contained in:
seiichiro 2021-07-08 19:21:43 +02:00
parent 3979ecd988
commit efd81746a8
1 changed files with 38 additions and 23 deletions
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39
lib/HM330x/HM330x.cpp
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@ -46,8 +46,11 @@ void HM330x::initialize(void) {
} }
// Wait for Sensor to get Ready // Wait for Sensor to get Ready
if (sleep_pin == 0) {
DEBUG_PRINTLN("HM330x::initialize Waiting for Sensor Startup"); DEBUG_PRINTLN("HM330x::initialize Waiting for Sensor Startup");
delay(30000); delay(30000);
}
DEBUG_PRINTLN("HM330x::initialize Trying to send Select"); DEBUG_PRINTLN("HM330x::initialize Trying to send Select");
// Send select command // Send select command
@ -65,46 +68,58 @@ void HM330x::initialize(void) {
// Read Data From Sensor and Put Them Into the Payload Array // Read Data From Sensor and Put Them Into the Payload Array
uint8_t HM330x::getSensorData(char *payload, uint8_t startbyte) { uint8_t HM330x::getSensorData(char *payload, uint8_t startbyte) {
uint8_t data[HM330x_DATA_LEN] = {0}; uint8_t data[HM330x_DATA_LEN] = {0};
uint16_t value = 0; uint16_t values[3] = { 0xEEEE, 0xEEEE, 0xEEEE };
DEBUG_PRINTLN("HM330x::getSensorData"); DEBUG_PRINTLN("HM330x::getSensorData");
// Enable Sensor and Wait for it to Settle // Enable Sensor and Wait for it to Settle
if (sleep_pin > 0) { if (sleep_pin > 0) {
digitalWrite(sleep_pin, HIGH); digitalWrite(sleep_pin, HIGH);
DEBUG_PRINTLN("HM330x::getSensorData Waiting for Stable Values after Sleep");
delay(30000); delay(30000);
sendCmd(HM330x_SELECT);
} }
// Initialize Payload with 0s // Initialize Payload with 0s
for (uint8_t i=startbyte; i < startbyte+6; i++) for (uint8_t i=startbyte; i < startbyte+6; i++)
payload[i] = 0xFF; payload[i] = 0xFF;
bool dataok = false;
uint8_t tries = 5;
while (!dataok && tries > 0) {
DEBUG_PRINT("HM330x::getSensorData reading I2C Try ");
DEBUG_PRINTLN(6-tries);
// Get Data from the Sensors // Get Data from the Sensors
Wire.requestFrom(HM330x_ADDR, HM330x_DATA_LEN); Wire.requestFrom(HM330x_ADDR, HM330x_DATA_LEN);
if (Wire.available()) { if (Wire.available()) {
DEBUG_PRINT("HM330x::getSensorData reading I2C:") DEBUG_PRINT("HM330x::getSensorData I2C data: 0x")
for (uint8_t i = 0; i<HM330x_DATA_LEN; i++){ for (uint8_t i = 0; i<HM330x_DATA_LEN; i++){
data[i] = Wire.read(); data[i] = Wire.read();
DEBUG_PRINT(" 0x");
DEBUG_PRINT(data[i], HEX); DEBUG_PRINT(data[i], HEX);
DEBUG_PRINT(" ");
} }
DEBUG_PRINTLN(""); DEBUG_PRINTLN("");
if (calcSum(data) == data[HM330x_DATA_LEN-1]) { if (calcSum(data) == data[HM330x_DATA_LEN-1]) {
for (uint8_t pos = 5; pos<8; pos++) { for (uint8_t pos = 5; pos<8; pos++) {
value = bytesToUint16(data, pos); values[pos-5]= bytesToUint16(data, pos);
uint16ToPayload(value, payload, startbyte);
startbyte += 2;
} }
if (sleep_pin > 0) { dataok = true;
digitalWrite(sleep_pin, LOW);
}
return startbyte;
} else { } else {
for (uint8_t i=startbyte; i < startbyte+6; i++) DEBUG_PRINTLN("HM330x::getSensorData Checksum Error")
payload[i] = 0xEE; delay(2000);
tries--;
}
} else {
DEBUG_PRINTLN("HM330x::getSensorData I2C Not Ready")
delay(2000);
tries--;
} }
} }
uint16ToPayload(values[0], payload, startbyte);
uint16ToPayload(values[1], payload, startbyte+2);
uint16ToPayload(values[2], payload, startbyte+4);
if (sleep_pin > 0) { if (sleep_pin > 0) {
digitalWrite(sleep_pin, LOW); digitalWrite(sleep_pin, LOW);
} }