76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
#ifndef FSFW_HAL_STM32H7_SPI_SPICOOKIE_H_
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#define FSFW_HAL_STM32H7_SPI_SPICOOKIE_H_
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#include "spiDefinitions.h"
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#include "mspInit.h"
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#include "fsfw/devicehandlers/CookieIF.h"
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#include "stm32h743xx.h"
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/**
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* @brief SPI cookie implementation for the STM32H7 device family
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* @details
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* This cookie contains and caches device specific information to be used by the
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* SPI communication interface
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* @author R. Mueller
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*/
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class SpiCookie: public CookieIF {
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friend class SpiComIF;
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public:
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/**
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* Allows construction of a SPI cookie for a connected SPI device
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* @param deviceAddress
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* @param spiIdx SPI bus, e.g. SPI1 or SPI2
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* @param transferMode
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* @param mspCfg This is the MSP configuration. The user is expected to supply
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* a valid MSP configuration. See mspInit.h for functions
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* to create one.
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* @param spiSpeed
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* @param spiMode
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* @param chipSelectGpioPin GPIO port. Don't use a number here, use the 16 bit type
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* definitions supplied in the MCU header file! (e.g. GPIO_PIN_X)
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* @param chipSelectGpioPort GPIO port (e.g. GPIOA)
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* @param maxRecvSize Maximum expected receive size. Chose as small as possible.
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*/
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SpiCookie(address_t deviceAddress, spi::SpiBus spiIdx, spi::TransferModes transferMode,
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spi::MspCfgBase* mspCfg, uint32_t spiSpeed, spi::SpiModes spiMode,
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uint16_t chipSelectGpioPin, GPIO_TypeDef* chipSelectGpioPort, size_t maxRecvSize);
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uint16_t getChipSelectGpioPin() const;
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GPIO_TypeDef* getChipSelectGpioPort();
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address_t getDeviceAddress() const;
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spi::SpiBus getSpiIdx() const;
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spi::SpiModes getSpiMode() const;
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spi::TransferModes getTransferMode() const;
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uint32_t getSpiSpeed() const;
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size_t getMaxRecvSize() const;
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SPI_HandleTypeDef& getSpiHandle();
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private:
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address_t deviceAddress;
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SPI_HandleTypeDef spiHandle = {};
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spi::SpiBus spiIdx;
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uint32_t spiSpeed;
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spi::SpiModes spiMode;
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spi::TransferModes transferMode;
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volatile spi::TransferStates transferState = spi::TransferStates::IDLE;
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uint16_t chipSelectGpioPin;
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GPIO_TypeDef* chipSelectGpioPort;
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// The MSP configuration is cached here. Be careful when using this, it is automatically
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// deleted by the SPI communication interface if it is not required anymore!
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spi::MspCfgBase* mspCfg = nullptr;
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const size_t maxRecvSize;
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// Only the SpiComIF is allowed to use this to prevent dangling pointers issues
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spi::MspCfgBase* getMspCfg();
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void deleteMspCfg();
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void setTransferState(spi::TransferStates transferState);
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spi::TransferStates getTransferState() const;
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};
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#endif /* FSFW_HAL_STM32H7_SPI_SPICOOKIE_H_ */
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