Rewrite API change

include/sta/MS5607.hpp

@@ -28,9 +28,10 @@ namespace sta {
         // Function to get Pressure
         // Parameter should be Temperature in Celsius * 100 (e.g. 20.3 deg. C -> 2030)
         // If currently still processing, use old value
-        // If currently not processing, start processing to minmize potential wating times
+        // If currently not processing, start processing to minimize potential waiting times
         int32_t getPressure(int32_t temp, uint32_t curTime);
 
+        // --- DEPRECATED ---
         // Parameterless version of function above
         // Calls getTemperature, to get temp
         // NOT RECOMMENDED
@@ -40,6 +41,7 @@ namespace sta {
         // Deprecated because of time constrains
         // NOT RECOMMENDED
         int32_t getTemperature();
+        // --- DEPRECATED ---
 
         void changeOsrLevel(OsrLevel newOsr) { 
             // Don't I need to write this to the sensor?
@@ -54,11 +56,13 @@ namespace sta {
             this->device_->beginTransmission();
         }
 
-        // Last Presure Value meassured; Used to give any output if still calculating ADC
+        // Last Pressure Value measured; Used to give any output if still calculating ADC
         int32_t lastPresVal;
         // Value to store, when adc was started
         // On STM32 with HAL_GetTick() (Gives ms since startup)
         uint32_t adcStartTime;
+        // To prevent calculation of adc without reading value
+        bool presRead;
 
         // STA internal object for SPi abstraction
         SpiDevice* device_;
@@ -87,11 +91,13 @@ namespace sta {
         int32_t calculatePressure(uint32_t d1, int32_t dT);
         int32_t calculateTemperature(uint32_t d2);
 
+        int32_t reverseTempCalc(int32_t temp);
+
         void reset();
         void readPROM();
 
         // Constants for waiting
-        const char RESET_DELAY = 2800; // in uS
+        const uint32_t RESET_DELAY = 2800; // in uS
 
         // Function to get the delay times needed for different OSR Levels
         // Values not found in datasheet (facepalm)
@@ -99,7 +105,15 @@ namespace sta {
         static uint8_t delayTimes(OsrLevel level) {
             switch (level) {
             case _256:
-                return 
+                return 1;
+            case _512:
+                return 2;
+            case _1024:
+                return 3;
+            case _2048:
+                return 5;
+            case _4096:
+                return 10;
             }
         }
     };

src/MS5607.cpp

@@ -1,10 +1,15 @@
 #include "sta/MS5607.hpp"
 
 namespace sta {
+    // Forward declaration
+    uint16_t uint_8BufferTouint16_t(uint8_t* buffer);
+
     MS5607::MS5607(SpiDevice* device, OsrLevel level) {
         this->device_ = device;
         this->osr_ = level;
         this->lastPresVal = -1;
+        this->adcStartTime = -1;
+        this->presRead = true;
 
         // Reset device on start-up
         this->reset();
@@ -12,17 +17,44 @@ namespace sta {
         this->readPROM();
     }
 
-    void MS5607::requestAdcReadout() {
+    void MS5607::requestAdcReadout(uint32_t time) {
         // Get current state of calculation 
-
+        if (time-adcStartTime < delayTimes(this->osr_) || !presRead) {
+            // Time since last adc command is not enough
+            return;
+        }
 
         this->device_->beginTransmission();
         this->device_->transfer(MS5607::Operations::D1_CONVERSION + 2*this->osr_);
         this->device_->endTransmission();
+
+        adcStartTime = time;
+        presRead = false;
     }
 
-    int32_t MS5607::getPressure(int32_t temp) {
+    int32_t MS5607::getPressure(int32_t temp, uint32_t time) {
+        if (time-adcStartTime < delayTimes(this->osr_) || presRead) {
+            // Time since last adc command is not enough
+            return lastPresVal;
+        }
 
+        uint8_t buffer[3] = { 0 };
+
+        this->device_->beginTransmission();
+        this->device_->transfer(MS5607::Operations::ADC_RESULT);
+        this->device_->receive(buffer, 3);
+        this->device_->endTransmission();
+        this->presRead = true;
+
+        uint32_t d1_val = buffer[0] << 16 | buffer[1] << 8 | buffer[2];
+
+        this->requestAdcReadout(time);
+
+        return calculatePressure(d1_val, reverseTempCalc(temp));
+    }
+
+    int32_t MS5607::reverseTempCalc(int32_t temp) {
+        return this->tempsens;
     }
 
     // DEPRECATED
@@ -48,14 +80,8 @@ namespace sta {
 
         // Wait for ADC to finish
         // Could do sth. else and schedule continuation with scheduler in RTOS
-        uint8_t buf[1] = { 0 };
-        do {
-            *buf = 0;
-            uint8_t tx[1] = { 0b11111110 };
-            this->device_->beginTransmission();
-            this->device_->transfer(tx, buf, 1);
-            this->device_->endTransmission();
-        } while (*buf == 0x00);
+        // TODO: Find out min
+        sta::delayMs(10);
 
         // Request readout of ADC value
         uint8_t d1Arr[3];
@@ -99,14 +125,8 @@ namespace sta {
 
         // Wait for ADC to finish
         // Could do sth. else and schedule continuation with scheduler in RTOS
-        uint8_t buf[1] = { 0 };
-        do {
-            *buf = 0;
-            uint8_t tx[1] = { 0b11111110 };
-            this->device_->beginTransmission();
-            this->device_->transfer(tx, buf, 1);
-            this->device_->endTransmission();
-        } while (*buf == 0x00);
+        // TODO: Test out min
+       sta::delayMs(10);
 
 
         // Request ADC readout