continued stm32 spi code

common/spi/spiCommon.h

@@ -0,0 +1,17 @@
+#ifndef FSFW_HAL_COMMON_SPI_SPICOMMON_H_
+#define FSFW_HAL_COMMON_SPI_SPICOMMON_H_
+
+#include <cstdint>
+
+namespace spi {
+
+enum SpiModes: uint8_t {
+    MODE_0,
+    MODE_1,
+    MODE_2,
+    MODE_3
+};
+
+}
+
+#endif /* FSFW_HAL_COMMON_SPI_SPICOMMON_H_ */

linux/spi/spiDefinitions.h

@@ -2,6 +2,7 @@
 #define LINUX_SPI_SPIDEFINITONS_H_
 
 #include "../../common/gpio/gpioDefinitions.h"
+#include "../../common/spi/spiCommon.h"
 
 #include "fsfw/returnvalues/HasReturnvaluesIF.h"
 #include <linux/spi/spidev.h>
@@ -13,13 +14,6 @@ class SpiComIF;
 
 namespace spi {
 
-enum SpiModes: uint8_t {
-    MODE_0,
-    MODE_1,
-    MODE_2,
-    MODE_3
-};
-
 enum SpiComIfModes {
 	REGULAR,
 	CALLBACK

stm32h7/CMakeLists.txt

@@ -1 +1,2 @@
+add_subdirectory(spi)
 add_subdirectory(devicetest)

stm32h7/devicetest/GyroL3GD20H.cpp

@@ -1,22 +1,29 @@
 #include "GyroL3GD20H.h"
+#include "stm32h7xx_spi_dma_msp.h"
+#include "spiConf.h"
+#include "../spi/spiDefinitions.h"
 
+#include "fsfw/tasks/TaskFactory.h"
 #include "fsfw/serviceinterface/ServiceInterface.h"
+
 #include "stm32h7xx_nucleo.h"
 #include "stm32h7xx_hal_spi.h"
 
-uint8_t ALIGN_32BYTES(GyroL3GD20H::recvBuffer[recvBufferSize]);
+std::array<uint8_t, GyroL3GD20H::recvBufferSize> GyroL3GD20H::rxBuffer;
+TransferStates transferState = TransferStates::IDLE;
+DMA_HandleTypeDef txDmaHandle;
+DMA_HandleTypeDef rxDmaHandle;
 
 GyroL3GD20H::GyroL3GD20H(SPI_HandleTypeDef *spiHandle): spiHandle(spiHandle) {
+    setDmaHandles(&txDmaHandle, &rxDmaHandle);
 }
 
-ReturnValue_t GyroL3GD20H::performOperation() {
+ReturnValue_t GyroL3GD20H::initialize() {
-    /*##-1- Configure the SPI peripheral #######################################*/
+    // Configure the SPI peripheral
-    /* Set the SPI parameters */
     spiHandle->Instance               = SPI1;
-    spiHandle->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
+    spiHandle->Init.BaudRatePrescaler = SPI_GetPrescaler(HAL_RCC_GetHCLKFreq(), 3900000);
     spiHandle->Init.Direction         = SPI_DIRECTION_2LINES;
-    spiHandle->Init.CLKPhase          = SPI_PHASE_1EDGE;
+    spi::assignSpiMode(spi::SpiModes::MODE_3, spiHandle);
-    spiHandle->Init.CLKPolarity       = SPI_POLARITY_LOW;
     spiHandle->Init.DataSize          = SPI_DATASIZE_8BIT;
     spiHandle->Init.FirstBit          = SPI_FIRSTBIT_MSB;
     spiHandle->Init.TIMode            = SPI_TIMODE_DISABLE;
@@ -25,11 +32,69 @@ ReturnValue_t GyroL3GD20H::performOperation() {
     spiHandle->Init.CRCLength         = SPI_CRC_LENGTH_8BIT;
     spiHandle->Init.NSS               = SPI_NSS_SOFT;
     spiHandle->Init.NSSPMode          = SPI_NSS_PULSE_DISABLE;
-    /* Recommended setting to avoid glitches */
+    // Recommended setting to avoid glitches
     spiHandle->Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_ENABLE;
     spiHandle->Init.Mode = SPI_MODE_MASTER;
     if(HAL_SPI_Init(spiHandle) != HAL_OK) {
         sif::printWarning("Error initializing SPI\n");
+        return HasReturnvaluesIF::RETURN_FAILED;
     }
     return HasReturnvaluesIF::RETURN_OK;
 }
+
+ReturnValue_t GyroL3GD20H::performOperation() {
+
+    transferState = TransferStates::WAIT;
+    // Start SPI transfer via DMA
+    if(HAL_SPI_TransmitReceive_DMA(spiHandle, txBuffer.data(), rxBuffer.data(), 2) != HAL_OK) {
+        // Transfer error in transmission process
+        sif::printWarning("Error transmitting SPI with DMA\n");
+    }
+
+    // Wait for the transfer to complete
+    while (transferState == TransferStates::WAIT) {
+        TaskFactory::delayTask(1);
+    }
+
+    // Invalidate cache prior to access by CPU
+    SCB_InvalidateDCache_by_Addr ((uint32_t *)rxBuffer.data(), recvBufferSize);
+
+    switch(transferState) {
+    case(TransferStates::SUCCESS): {
+        sif::printInfo("Transfer success\n");
+        transferState = TransferStates::IDLE;
+        break;
+    }
+    case(TransferStates::FAILURE): {
+        sif::printWarning("Transfer failure\n");
+        transferState = TransferStates::FAILURE;
+        break;
+    }
+    default: {
+        break;
+    }
+    }
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+/**
+ * @brief  TxRx Transfer completed callback.
+ * @param  hspi: SPI handle
+ * @note   This example shows a simple way to report end of DMA TxRx transfer, and
+ *         you can add your own implementation.
+ * @retval None
+ */
+void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi) {
+    transferState = TransferStates::SUCCESS;
+}
+
+/**
+ * @brief  SPI error callbacks.
+ * @param  hspi: SPI handle
+ * @note   This example shows a simple way to report transfer error, and you can
+ *         add your own implementation.
+ * @retval None
+ */
+void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi) {
+    transferState = TransferStates::FAILURE;
+}

stm32h7/devicetest/GyroL3GD20H.h

@@ -3,19 +3,32 @@
 
 #include "stm32h7xx_hal.h"
 #include "stm32h7xx_hal_spi.h"
-#include <cstdint>
 
 #include "fsfw/returnvalues/HasReturnvaluesIF.h"
 
+#include <cstdint>
+#include <array>
+
+enum class TransferStates {
+    IDLE,
+    WAIT,
+    SUCCESS,
+    FAILURE
+};
+
 class GyroL3GD20H {
 public:
     GyroL3GD20H(SPI_HandleTypeDef* spiHandle);
 
+    ReturnValue_t initialize();
     ReturnValue_t performOperation();
+
 private:
+
     SPI_HandleTypeDef* spiHandle;
     static constexpr size_t recvBufferSize = 32 * 10;
-    static uint8_t recvBuffer[recvBufferSize];
+    static std::array<uint8_t, recvBufferSize> rxBuffer;
+    std::array<uint8_t, 32> txBuffer;
 };
 
 #endif /*  FSFW_HAL_STM32H7_DEVICETEST_GYRO_L3GD20H_H_ */

stm32h7/spi/CMakeLists.txt

@@ -0,0 +1,3 @@
+target_sources(${TARGET_NAME} PRIVATE
+    spiDefinitions.cpp
+)

stm32h7/spi/spiDefinitions.cpp

@@ -0,0 +1,26 @@
+#include "spiDefinitions.h"
+
+void spi::assignSpiMode(SpiModes spiMode, SPI_HandleTypeDef *spiHandle) {
+    switch(spiMode) {
+    case(SpiModes::MODE_0): {
+        spiHandle->Init.CLKPolarity = SPI_POLARITY_LOW;
+        spiHandle->Init.CLKPhase = SPI_PHASE_1EDGE;
+        break;
+    }
+    case(SpiModes::MODE_1): {
+        spiHandle->Init.CLKPolarity = SPI_POLARITY_LOW;
+        spiHandle->Init.CLKPhase = SPI_PHASE_2EDGE;
+        break;
+    }
+    case(SpiModes::MODE_2): {
+        spiHandle->Init.CLKPolarity = SPI_POLARITY_HIGH;
+        spiHandle->Init.CLKPhase = SPI_PHASE_1EDGE;
+        break;
+    }
+    case(SpiModes::MODE_3): {
+        spiHandle->Init.CLKPolarity = SPI_POLARITY_HIGH;
+        spiHandle->Init.CLKPhase = SPI_PHASE_2EDGE;
+        break;
+    }
+    }
+}

stm32h7/spi/spiDefinitions.h

@@ -0,0 +1,16 @@
+#ifndef FSFW_HAL_STM32H7_SPI_SPIDEFINITIONS_H_
+#define FSFW_HAL_STM32H7_SPI_SPIDEFINITIONS_H_
+
+#include "../../common/spi/spiCommon.h"
+
+#include "stm32h7xx_hal.h"
+#include "stm32h7xx_hal_spi.h"
+
+namespace spi {
+
+void assignSpiMode(SpiModes spiMode, SPI_HandleTypeDef* spiHandle);
+
+}
+
+
+#endif /* FSFW_HAL_STM32H7_SPI_SPIDEFINITIONS_H_ */