continued spi com if

stm32h7/spi/SpiComIF.cpp

@@ -1,10 +1,103 @@
 #include "SpiComIF.h"
+#include "SpiCookie.h"
 
-SpiComIF::SpiComIF(object_id_t objectId, SPI_TypeDef* spiInstance,
-        spi::TransferModes transferMode): SystemObject(objectId) {
+#include "fsfw/tasks/SemaphoreFactory.h"
+#include "fsfw_hal/stm32h7/spi/spiCore.h"
+
+#include "stm32h7xx_hal_gpio.h"
+
+SpiComIF::SpiComIF(object_id_t objectId, SPI_TypeDef* spiInstance, SPI_HandleTypeDef* spiHandle,
+        spi::TransferModes transferMode): SystemObject(objectId), transferMode(transferMode),
+        spiHandle(spiHandle) {
+    if(spiHandle == nullptr) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
+        sif::error << "SpiComIF::SpiComIF: Passed SPI handle invalid!" << std::endl;
+#else
+        sif::printError("SpiComIF::SpiComIF: Passed SPI handle invalid!\n");
+#endif
+        return;
+    }
+    spiHandle->Instance = spiInstance;
+    spiHandle->Init.DataSize          = SPI_DATASIZE_8BIT;
+    spiHandle->Init.FirstBit          = SPI_FIRSTBIT_MSB;
+    spiHandle->Init.TIMode            = SPI_TIMODE_DISABLE;
+    spiHandle->Init.CRCCalculation    = SPI_CRCCALCULATION_DISABLE;
+    spiHandle->Init.CRCPolynomial     = 7;
+    spiHandle->Init.CRCLength         = SPI_CRC_LENGTH_8BIT;
+    spiHandle->Init.NSS               = SPI_NSS_SOFT;
+    spiHandle->Init.NSSPMode          = SPI_NSS_PULSE_DISABLE;
+    spiHandle->Init.Direction         = SPI_DIRECTION_2LINES;
+    // Recommended setting to avoid glitches
+    spiHandle->Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE;
+    spiHandle->Init.Mode = SPI_MODE_MASTER;
+
+    spiSemaphore = SemaphoreFactory::instance()->createBinarySemaphore();
+}
+
+void SpiComIF::configureCacheMaintenanceOnTxBuffer(bool enable) {
+    this->cacheMaintenanceOnTxBuffer = enable;
+}
+
+void SpiComIF::addDmaHandles(DMA_HandleTypeDef *txHandle, DMA_HandleTypeDef *rxHandle) {
+    set_dma_handles(txHandle, rxHandle);
+}
+
+ReturnValue_t SpiComIF::initialize() {
+    if(transferMode == spi::TransferModes::DMA) {
+        DMA_HandleTypeDef *txHandle = nullptr;
+        DMA_HandleTypeDef *rxHandle = nullptr;
+        get_dma_handles(&txHandle, &rxHandle);
+        if(txHandle == nullptr or rxHandle == nullptr) {
+            sif::printError("SpiComIF::initialize: DMA handles not set!\n");
+            return HasReturnvaluesIF::RETURN_FAILED;
+        }
+    }
+    if(HAL_SPI_Init(spiHandle) != HAL_OK) {
+        sif::printWarning("SpiComIF::initialize: Error initializing SPI\n");
+        return HasReturnvaluesIF::RETURN_FAILED;
+    }
+    return HasReturnvaluesIF::RETURN_OK;
 }
 
 ReturnValue_t SpiComIF::initializeInterface(CookieIF *cookie) {
+    SpiCookie* spiCookie = dynamic_cast<SpiCookie*>(cookie);
+    if(spiCookie == nullptr) {
+#if FSFW_CPP_OSTREAM_ENABLED == 1
+        sif::error < "SpiComIF::initializeInterface: Invalid cookie" << std::endl;
+#else
+        sif::printError("SpiComIF::initializeInterface: Invalid cookie\n");
+#endif
+        return NULLPOINTER;
+    }
+
+    address_t spiAddress = spiCookie->getDeviceAddress();
+
+    auto iter = spiDeviceMap.find(spiAddress);
+    if(iter == spiDeviceMap.end()) {
+        size_t bufferSize = spiCookie->getMaxRecvSize();
+        SpiInstance spiInstance = {std::vector<uint8_t>(bufferSize)};
+        auto statusPair = spiDeviceMap.emplace(spiAddress, spiInstance);
+        if (not statusPair.second) {
+#if FSFW_VERBOSE_LEVEL >= 1
+#if FSFW_CPP_OSTREAM_ENABLED == 1
+            sif::error << "SpiComIF::initializeInterface: Failed to insert device with address " <<
+                    spiAddress << "to SPI device map" << std::endl;
+#else
+            sif::printError("SpiComIF::initializeInterface: Failed to insert device with address "
+                    "%lu to SPI device map\n", static_cast<unsigned long>(spiAddress));
+#endif /* FSFW_CPP_OSTREAM_ENABLED == 1 */
+#endif /* FSFW_VERBOSE_LEVEL >= 1 */
+            return HasReturnvaluesIF::RETURN_FAILED;
+        }
+    }
+    auto gpioPin = spiCookie->getChipSelectGpioPin();
+    auto gpioPort = spiCookie->getChipSelectGpioPort();
+
+    GPIO_InitTypeDef chipSelect = {};
+    chipSelect.Pin = GPIO_PIN_14;
+    chipSelect.Mode = GPIO_MODE_OUTPUT_PP;
+    HAL_GPIO_Init(gpioPort, &chipSelect);
+    HAL_GPIO_WritePin(gpioPort, gpioPin, GPIO_PIN_SET);
     return HasReturnvaluesIF::RETURN_OK;
 }
 

stm32h7/spi/SpiComIF.h

@@ -2,6 +2,7 @@
 #define FSFW_HAL_STM32H7_SPI_SPICOMIF_H_
 
 
+#include "fsfw/tasks/SemaphoreIF.h"
 #include "fsfw/devicehandlers/DeviceCommunicationIF.h"
 #include "fsfw/objectmanager/SystemObject.h"
 
@@ -9,11 +10,40 @@
 #include "stm32h7xx_hal_spi.h"
 #include "stm32h743xx.h"
 
+#include <vector>
+#include <map>
+
 class SpiComIF:
         public SystemObject,
         public DeviceCommunicationIF {
 public:
-    SpiComIF(object_id_t objectId, SPI_TypeDef* spiInstance, spi::TransferModes transferMode);
+    /**
+     * Create a SPI communication interface for the given SPI peripheral (spiInstance)
+     * @param objectId
+     * @param spiInstance
+     * @param spiHandle
+     * @param transferMode
+     */
+    SpiComIF(object_id_t objectId, SPI_TypeDef* spiInstance, SPI_HandleTypeDef* spiHandle,
+            spi::TransferModes transferMode);
+
+    /**
+     * Allows the user to disable cache maintenance on the TX buffer. This can be done if the
+     * TX buffers are places and MPU protected properly like specified in this link:
+     * https://community.st.com/s/article/FAQ-DMA-is-not-working-on-STM32H7-devices
+     * The cache maintenace is enabled by default.
+     * @param enable
+     */
+    void configureCacheMaintenanceOnTxBuffer(bool enable);
+
+    /**
+     * Add the DMA handles. These need to be set in the DMA transfer mode is used
+     * @param txHandle
+     * @param rxHandle
+     */
+    void addDmaHandles(DMA_HandleTypeDef* txHandle, DMA_HandleTypeDef* rxHandle);
+
+    ReturnValue_t initialize() override;
 protected:
 
     // DeviceCommunicationIF overrides
@@ -25,8 +55,21 @@ protected:
             size_t requestLen) override;
     virtual ReturnValue_t readReceivedMessage(CookieIF *cookie,
             uint8_t **buffer, size_t *size) override;
+
 private:
-    SPI_HandleTypeDef spiHandle;
+    struct SpiInstance {
+        std::vector<uint8_t> replyBuffer;
+    };
+
+    spi::TransferModes transferMode;
+    SPI_HandleTypeDef* spiHandle;
+    SemaphoreIF* spiSemaphore;
+    bool cacheMaintenanceOnTxBuffer = true;
+
+    using SpiDeviceMap = std::map<address_t, SpiInstance>;
+    using SpiDeviceMapIter = SpiDeviceMap::iterator;
+
+    SpiDeviceMap spiDeviceMap;
 };
 
 

stm32h7/spi/SpiCookie.cpp

@@ -3,7 +3,37 @@
 
 
 SpiCookie::SpiCookie(address_t deviceAddress, spi::SpiBus spiIdx,  uint32_t spiSpeed,
-        spi::SpiModes spiMode, uint16_t chipSelectGpioPin, GPIO_TypeDef* chipSelectGpioPort):
+        spi::SpiModes spiMode, uint16_t chipSelectGpioPin, GPIO_TypeDef* chipSelectGpioPort,
+        size_t maxRecvSize):
         deviceAddress(deviceAddress), spiIdx(spiIdx), spiSpeed(spiSpeed), spiMode(spiMode),
-        chipSelectGpioPin(chipSelectGpioPin), chipSelectGpioPort(chipSelectGpioPort) {
+        chipSelectGpioPin(chipSelectGpioPin), chipSelectGpioPort(chipSelectGpioPort),
+        maxRecvSize(maxRecvSize) {
+}
+
+uint16_t SpiCookie::getChipSelectGpioPin() const {
+    return chipSelectGpioPin;
+}
+
+GPIO_TypeDef* SpiCookie::getChipSelectGpioPort() {
+    return chipSelectGpioPort;
+}
+
+address_t SpiCookie::getDeviceAddress() const {
+    return deviceAddress;
+}
+
+spi::SpiBus SpiCookie::getSpiIdx() const {
+    return spiIdx;
+}
+
+spi::SpiModes SpiCookie::getSpiMode() const {
+    return spiMode;
+}
+
+uint32_t SpiCookie::getSpiSpeed() const {
+    return spiSpeed;
+}
+
+size_t SpiCookie::getMaxRecvSize() const {
+    return maxRecvSize;
 }

stm32h7/spi/SpiCookie.h

@@ -10,7 +10,16 @@
 class SpiCookie: public CookieIF {
 public:
     SpiCookie(address_t deviceAddress, spi::SpiBus spiIdx, uint32_t spiSpeed, spi::SpiModes spiMode,
-            uint16_t chipSelectGpioPin, GPIO_TypeDef* chipSelectGpioPort);
+            uint16_t chipSelectGpioPin, GPIO_TypeDef* chipSelectGpioPort, size_t maxRecvSize);
+
+    uint16_t getChipSelectGpioPin() const;
+    GPIO_TypeDef* getChipSelectGpioPort();
+    address_t getDeviceAddress() const;
+    spi::SpiBus getSpiIdx() const;
+    spi::SpiModes getSpiMode() const;
+    uint32_t getSpiSpeed() const;
+    size_t getMaxRecvSize() const;
+
 private:
     address_t deviceAddress;
     spi::SpiBus spiIdx;
@@ -18,6 +27,7 @@ private:
     spi::SpiModes spiMode;
     uint16_t chipSelectGpioPin;
     GPIO_TypeDef* chipSelectGpioPort;
+    const size_t maxRecvSize;
 };