bit rate setter

linux/obc/CMakeLists.txt

@@ -3,6 +3,7 @@ target_sources(${TARGET_NAME} PUBLIC
 	Ptme.cpp
 	PdecHandler.cpp
 	PdecConfig.cpp
+	PtmeRateSetter.cpp
 )
 
 

linux/obc/PtmeRateSetter.cpp

@@ -0,0 +1,27 @@
+#include "PtmeRateSetter.h"
+#include "fsfw/serviceinterface/ServiceInterface.h"
+
+PtmeRateSetter::PtmeRateSetter(gpioId_t bitrateSel, GpioIF* gpioif) :
+        bitrateSel(bitrateSel), gpioif(gpioif) {
+}
+
+PtmeRateSetter::~PtmeRateSetter() {
+}
+
+ReturnValue_t PtmeRateSetter::setRate(BitRates rate) {
+    ReturnValue_t result = HasReturnvaluesIF::RETURN_OK;
+    switch(rate) {
+    case RATE_2000KHZ:
+        result = gpioif->pullHigh(bitrateSel);
+        break;
+    case RATE_400KHZ:
+        result = gpioif->pullLow(bitrateSel);
+        break;
+    default:
+        sif::debug << "PtmeRateSetter::setRate: Invalid rate" << std::endl;
+        result = HasReturnvaluesIF::RETURN_FAILED;
+        break;
+    }
+    return result;
+}
+

linux/obc/PtmeRateSetter.h

@@ -0,0 +1,40 @@
+#ifndef LINUX_OBC_PTMERATESETTER_H_
+#define LINUX_OBC_PTMERATESETTER_H_
+
+#include "TxRateSetterIF.h"
+#include "fsfw_hal/common/gpio/gpioDefinitions.h"
+#include "fsfw_hal/common/gpio/GpioIF.h"
+#include "fsfw/returnvalues/HasReturnvaluesIF.h"
+
+/**
+ * @brief   Class to set the downlink bit rate by using the cadu_rate_switcher implemented in
+ *          the programmable logic.
+ *
+ * @details The cadu_rate_switcher module sets the input rate to the syrlinks transceiver either
+ *          to 2000 kHz (bitrateSel = 1) or 400 kHz (bitrate = 0).
+ *
+ * @author  J. Meier
+ */
+class PtmeRateSetter: public TxRateSetterIF {
+public:
+
+    /**
+     * @brief Constructor
+     *
+     * @param bitrateSel    GPIO ID of the GPIO connected to the bitrate_sel input of the
+     *                      cadu_rate_switcher.
+     * @param gpioif        GPIO interface to drive the bitrateSel GPIO
+     */
+    PtmeRateSetter(gpioId_t bitrateSel, GpioIF* gpioif);
+    virtual ~PtmeRateSetter();
+
+    virtual ReturnValue_t setRate(BitRates rate);
+
+private:
+
+    gpioId_t bitrateSel = gpio::NO_GPIO;
+
+    GpioIF* gpioif = nullptr;
+};
+
+#endif /* LINUX_OBC_PTMERATESETTER_H_ */

linux/obc/TxRateSetterIF.h

@@ -0,0 +1,25 @@
+#ifndef LINUX_OBC_TXRATESETTERIF_H_
+#define LINUX_OBC_TXRATESETTERIF_H_
+
+#include "fsfw/returnvalues/HasReturnvaluesIF.h"
+
+enum BitRates : uint32_t {
+        RATE_2000KHZ,
+        RATE_400KHZ
+};
+
+/**
+ * @brief  Abstract class for objects implementing the functionality to switch the
+ *         downlink bit rate.
+ *
+ * @author  J. Meier
+ */
+class TxRateSetterIF {
+public:
+    TxRateSetterIF() {};
+    virtual ~TxRateSetterIF() {};
+
+    virtual ReturnValue_t setRate(BitRates bitRate) = 0;
+};
+
+#endif /* LINUX_OBC_TXRATESETTERIF_H_ */