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85 lines
2.7 KiB
85 lines
2.7 KiB
/*
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* downstream_spi.h
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*
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* Created on: 24/07/2015
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* Author: Robert Fisk
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#ifndef INC_DOWNSTREAM_SPI_H_
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#define INC_DOWNSTREAM_SPI_H_
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#include "usbh_config.h"
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#define DOWNSTREAM_PACKET_HEADER_LEN (2) //Min length = CommandClass & Command bytes
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#define DOWNSTREAM_PACKET_LEN (DOWNSTREAM_PACKET_HEADER_LEN + BOT_PAGE_LENGTH)
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#define DOWNSTREAM_PACKET_LEN_MIN (DOWNSTREAM_PACKET_HEADER_LEN)
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#define DOWNSTREAM_PACKET_HEADER_LEN_16 (DOWNSTREAM_PACKET_HEADER_LEN / 2)
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#define DOWNSTREAM_PACKET_LEN_16 (DOWNSTREAM_PACKET_LEN / 2)
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#define DOWNSTREAM_PACKET_LEN_MIN_16 (DOWNSTREAM_PACKET_LEN_MIN / 2)
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#define DOWNSTREAM_SPI_FREAKOUT \
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do { \
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Downstream_PacketProcessor_FreakOut(); \
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DownstreamInterfaceState = DOWNSTREAM_INTERFACE_ERROR; \
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while (1); \
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} while (0);
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typedef enum
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{
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DOWNSTREAM_INTERFACE_IDLE,
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DOWNSTREAM_INTERFACE_RX_SIZE_WAIT,
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DOWNSTREAM_INTERFACE_RX_PACKET_WAIT,
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DOWNSTREAM_INTERFACE_TX_SIZE_WAIT,
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DOWNSTREAM_INTERFACE_TX_PACKET_WAIT,
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DOWNSTREAM_INTERFACE_ERROR
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}
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InterfaceStateTypeDef;
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typedef enum
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{
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NOT_BUSY,
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BUSY
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}
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PacketBusyTypeDef;
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typedef struct
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{
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PacketBusyTypeDef Busy; //Everything after Busy should be word-aligned
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uint16_t Length16 __ALIGN_END; //Packet length includes CommandClass, Command, and Data
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uint8_t CommandClass;
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uint8_t Command;
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uint8_t Data[BOT_PAGE_LENGTH]; //Should (must?) be word-aligned, for USB copy routine
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}
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DownstreamPacketTypeDef;
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typedef void (*FreePacketCallbackTypeDef)(DownstreamPacketTypeDef* freePacket);
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typedef void (*SpiPacketReceivedCallbackTypeDef)(DownstreamPacketTypeDef* receivedPacket);
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void Downstream_InitSPI(void);
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HAL_StatusTypeDef Downstream_GetFreePacket(FreePacketCallbackTypeDef callback);
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DownstreamPacketTypeDef* Downstream_GetFreePacketImmediately(void);
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void Downstream_ReleasePacket(DownstreamPacketTypeDef* packetToRelease);
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HAL_StatusTypeDef Downstream_ReceivePacket(SpiPacketReceivedCallbackTypeDef callback);
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HAL_StatusTypeDef Downstream_TransmitPacket(DownstreamPacketTypeDef* packetToWrite);
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void Downstream_SPIProcess(void);
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void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi);
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void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);
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#endif /* INC_DOWNSTREAM_SPI_H_ */
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