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/*
* upstream_spi.h
*
* Created on: 21/06/2015
* Author: Robert Fisk
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
#ifndef INC_UPSTREAM_SPI_H_
#define INC_UPSTREAM_SPI_H_
#include "upstream_statemachine.h"
#include "usbd_config.h"
#include "led.h"
#define UPSTREAM_PACKET_HEADER_LEN (2) //Min length = CommandClass & Command bytes
#define UPSTREAM_PACKET_LEN (UPSTREAM_PACKET_HEADER_LEN + MSC_MEDIA_PACKET)
#define UPSTREAM_PACKET_LEN_MIN (UPSTREAM_PACKET_HEADER_LEN)
#define UPSTREAM_PACKET_HEADER_LEN_16 (UPSTREAM_PACKET_HEADER_LEN / 2)
#define UPSTREAM_PACKET_LEN_16 (UPSTREAM_PACKET_LEN / 2)
#define UPSTREAM_PACKET_LEN_MIN_16 (UPSTREAM_PACKET_LEN_MIN / 2)
#define UPSTREAM_SPI_FREAKOUT \
do { \
LED_SetState(LED_STATUS_FLASH_ERROR); \
/*UpstreamInterfaceState = UPSTREAM_INTERFACE_ERROR; */ \
Upstream_StateMachine_SetErrorState(); \
while (1); \
} while (0);
typedef enum
{
UPSTREAM_INTERFACE_IDLE,
UPSTREAM_INTERFACE_TX_SIZE_WAIT,
UPSTREAM_INTERFACE_TX_SIZE,
UPSTREAM_INTERFACE_TX_PACKET_WAIT,
UPSTREAM_INTERFACE_TX_PACKET,
UPSTREAM_INTERFACE_RX_SIZE_WAIT,
UPSTREAM_INTERFACE_RX_SIZE,
UPSTREAM_INTERFACE_RX_PACKET_WAIT,
UPSTREAM_INTERFACE_RX_PACKET,
UPSTREAM_INTERFACE_ERROR
}
InterfaceStateTypeDef;
typedef enum
{
NOT_BUSY,
BUSY
}
PacketBusyTypeDef;
typedef struct
{
PacketBusyTypeDef Busy; //Everything after Busy should be word-aligned
uint16_t Length16 __ALIGN_END; //Packet length includes CommandClass, Command, and Data
uint8_t CommandClass;
uint8_t Command;
uint8_t Data[MSC_MEDIA_PACKET]; //Should (must?) be word-aligned, for USB copy routine
}
UpstreamPacketTypeDef;
typedef void (*FreePacketCallbackTypeDef)(UpstreamPacketTypeDef* freePacket);
typedef void (*SpiPacketReceivedCallbackTypeDef)(UpstreamPacketTypeDef* replyPacket);
void Upstream_InitSPI(void);
HAL_StatusTypeDef Upstream_GetFreePacket(FreePacketCallbackTypeDef callback);
UpstreamPacketTypeDef* Upstream_GetFreePacketImmediately(void);
void Upstream_ReleasePacket(UpstreamPacketTypeDef* packetToRelease);
HAL_StatusTypeDef Upstream_TransmitPacket(UpstreamPacketTypeDef* packetToWrite);
HAL_StatusTypeDef Upstream_ReceivePacket(SpiPacketReceivedCallbackTypeDef callback);
void Upstream_TxOkInterrupt(void);
void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi);
void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);
#endif /* INC_UPSTREAM_SPI_H_ */