Ivan Olenichev
2 years ago
parent
6185c52b56
commit
6800a95abe
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/*
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* downstream_interface_def.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_INTERFACE_DEF_H_
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#define INC_DOWNSTREAM_INTERFACE_DEF_H_
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//***************
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// Attention!
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// Keep this file synchronised with upstream_interface_def.h
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// in the Upstream project.
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//***************
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#define COMMAND_CLASS_DATA_FLAG 0x80
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#define COMMAND_CLASS_MASK ((uint8_t)(~COMMAND_CLASS_DATA_FLAG))
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typedef enum
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{
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COMMAND_CLASS_INTERFACE,
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COMMAND_CLASS_MASS_STORAGE,
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COMMAND_CLASS_HID_MOUSE,
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COMMAND_CLASS_HID_KEYBOARD,
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//...
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COMMAND_CLASS_ERROR
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}
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InterfaceCommandClassTypeDef;
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typedef enum
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{
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COMMAND_INTERFACE_ECHO, //Returns echo packet including all data
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COMMAND_INTERFACE_NOTIFY_DEVICE //Returns COMMAND_CLASS_*** byte when downstream USB device is connected
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}
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InterfaceCommandInterfaceTypeDef;
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typedef enum
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{
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COMMAND_MSC_TEST_UNIT_READY, //Returns HAL_StatusTypeDef result
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COMMAND_MSC_GET_CAPACITY, //Returns uint32_t blk_nbr, uint32_t blk_size
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COMMAND_MSC_READ, //Returns data stream or error packet
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COMMAND_MSC_WRITE, //Waits for data stream or returns error packet
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COMMAND_MSC_DISCONNECT, //Returns same packet after sending Stop command to device
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COMMAND_MSC_POLL_DISCONNECT //Returns same packet if device is still connected
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}
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InterfaceCommandMscTypeDef;
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typedef enum
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{
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COMMAND_HID_GET_REPORT, //Returns HID report from device
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COMMAND_HID_SET_REPORT //Sends HID report to device. Simple ack packet contains no data.
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}
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InterfaceCommandHidTypeDef;
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typedef enum
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{
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COMMAND_ERROR_GENERIC, //Something went wrong, time to FREAKOUT
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COMMAND_ERROR_DEVICE_DISCONNECTED, //Device unexpectedly disconnected
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}
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InterfaceCommandErrorTypeDef;
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#endif /* INC_DOWNSTREAM_INTERFACE_DEF_H_ */
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@ -0,0 +1,27 @@
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#ifndef INC_DOWNSTREAM_MSC_H_
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#define INC_DOWNSTREAM_MSC_H_
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#include "downstream_interface_def.h"
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#include "downstream_spi.h"
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#define MSC_SUPPORTED_BLOCK_SIZE 512
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#define MSC_FIXED_LUN 0
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typedef void (*DownstreamMSCCallbackPacketTypeDef)(DownstreamPacketTypeDef* receivedPacket,
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uint16_t dataLength8);
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InterfaceCommandClassTypeDef Downstream_MSC_ApproveConnectedDevice(void);
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void Downstream_MSC_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
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StatusTypeDef Downstream_MSC_PutStreamDataPacket(DownstreamPacketTypeDef* packetToSend,
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uint32_t dataLength8);
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StatusTypeDef Downstream_MSC_GetStreamDataPacket(DownstreamMSCCallbackPacketTypeDef callback);
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#endif /* INC_DOWNSTREAM_MSC_H_ */
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@ -0,0 +1,84 @@
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/*
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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_conf.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 __attribute__ ((aligned (4))); //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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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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StatusTypeDef Downstream_ReceivePacket(SpiPacketReceivedCallbackTypeDef callback);
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StatusTypeDef Downstream_TransmitPacket(DownstreamPacketTypeDef* packetToWrite);
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void Downstream_SPIProcess(void);
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void DMA_SPI_TxRxCpltCallback(void);
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//void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);
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#endif /* INC_DOWNSTREAM_SPI_H_ */
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@ -0,0 +1,54 @@
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/*
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* downstream_statemachine.h
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*
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* Created on: 2/08/2015
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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_STATEMACHINE_H_
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#define INC_DOWNSTREAM_STATEMACHINE_H_
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#include "usb_host.h"
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#include "usbh_core.h"
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#include "downstream_spi.h"
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typedef enum
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{
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STATE_DEVICE_NOT_READY,
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STATE_DEVICE_READY, //Go here if HOST_USER_CLASS_ACTIVE callback arrives first
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STATE_WAIT_DEVICE_READY, //Go here if COMMAND_INTERFACE_NOTIFY_DEVICE message arrives first
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STATE_ACTIVE,
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STATE_ERROR
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} DownstreamStateTypeDef;
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#define DOWNSTREAM_STATEMACHINE_FREAKOUT \
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do { \
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USB_Host_Disconnect(); \
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/*LED_SetState(LED_STATUS_FLASH_ERROR);*/ \
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/*DownstreamState = STATE_ERROR; */ \
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while (1); \
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} while (0);
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void Downstream_InitStateMachine(void);
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void Downstream_HostUserCallback(usbh_host *phost, uint8_t id);
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void Downstream_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
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void Downstream_PacketProcessor_GenericErrorReply(DownstreamPacketTypeDef* replyPacket);
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void Downstream_PacketProcessor_ClassReply(DownstreamPacketTypeDef* replyPacket);
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void Downstream_PacketProcessor_NotifyDisconnectReplyRequired(void);
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void Downstream_PacketProcessor_CheckNotifyDisconnectReply(void);
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void Downstream_PacketProcessor_SetErrorState(void);
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void Downstream_PacketProcessor_FreakOut(void);
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#endif /* INC_DOWNSTREAM_STATEMACHINE_H_ */
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@ -0,0 +1,358 @@
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/*
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* downstream_msc.c
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*
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* Created on: 8/08/2015
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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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#include "downstream_msc.h"
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#include "downstream_interface_def.h"
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#include "downstream_statemachine.h"
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#include "downstream_spi.h"
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//#include "usbh_msc.h"
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#include "usbh_msc_core.h"
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#include "build_config.h"
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#ifdef CONFIG_MASS_STORAGE_ENABLED
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extern USBH_HandleTypeDef hUsbHostFS; //Hard-link ourselves to usb_host.c
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//Stuff we need to save for our callbacks to use:
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DownstreamMSCCallbackPacketTypeDef GetStreamDataCallback;
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uint32_t ByteCount;
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DownstreamPacketTypeDef* ReadStreamPacket;
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uint8_t ReadStreamBusy;
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static void Downstream_MSC_PacketProcessor_TestUnitReady(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_TestUnitReadyCallback(USBH_StatusTypeDef result);
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static void Downstream_MSC_PacketProcessor_GetCapacity(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_BeginRead(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_BeginWrite(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_RdWrCompleteCallback(USBH_StatusTypeDef result);
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static void Downstream_MSC_GetStreamDataPacketCallback(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_Disconnect(DownstreamPacketTypeDef* receivedPacket);
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static void Downstream_MSC_PacketProcessor_DisconnectCallback(USBH_StatusTypeDef result);
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//High-level checks on the connected device. We don't want some weirdly
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//configured device to bomb our USB stack, accidentally or otherwise.
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InterfaceCommandClassTypeDef Downstream_MSC_ApproveConnectedDevice(void)
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{
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MSC_HandleTypeDef* MSC_Handle = (MSC_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
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if (MSC_Handle->unit[MSC_FIXED_LUN].error != MSC_OK)
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{
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return COMMAND_CLASS_INTERFACE; //fail
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}
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if ((MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr == 0) ||
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(MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr == UINT32_MAX))
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{
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return COMMAND_CLASS_INTERFACE; //fail
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}
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if (MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_size != MSC_SUPPORTED_BLOCK_SIZE)
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{
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return COMMAND_CLASS_INTERFACE; //fail
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}
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return COMMAND_CLASS_MASS_STORAGE; //success!
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}
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void Downstream_MSC_PacketProcessor(DownstreamPacketTypeDef* receivedPacket)
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{
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switch (receivedPacket->Command)
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{
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case COMMAND_MSC_TEST_UNIT_READY:
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Downstream_MSC_PacketProcessor_TestUnitReady(receivedPacket);
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break;
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case COMMAND_MSC_GET_CAPACITY:
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Downstream_MSC_PacketProcessor_GetCapacity(receivedPacket);
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break;
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case COMMAND_MSC_READ:
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Downstream_MSC_PacketProcessor_BeginRead(receivedPacket);
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break;
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#ifdef CONFIG_MASS_STORAGE_WRITES_PERMITTED
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case COMMAND_MSC_WRITE:
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Downstream_MSC_PacketProcessor_BeginWrite(receivedPacket);
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break;
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#endif
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case COMMAND_MSC_DISCONNECT:
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Downstream_MSC_PacketProcessor_Disconnect(receivedPacket);
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break;
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case COMMAND_MSC_POLL_DISCONNECT:
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Downstream_PacketProcessor_ClassReply(receivedPacket); //Device is still connected, so send the packet straight back
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break;
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default:
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Downstream_PacketProcessor_FreakOut();
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}
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}
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static void Downstream_MSC_PacketProcessor_TestUnitReady(DownstreamPacketTypeDef* receivedPacket)
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{
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Downstream_ReleasePacket(receivedPacket);
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if (USBH_MSC_UnitIsReady(&hUsbHostFS,
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MSC_FIXED_LUN,
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Downstream_MSC_PacketProcessor_TestUnitReadyCallback) != USBH_BUSY)
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{
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Downstream_MSC_PacketProcessor_TestUnitReadyCallback(USBH_FAIL);
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}
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}
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static void Downstream_MSC_PacketProcessor_TestUnitReadyCallback(USBH_StatusTypeDef result)
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{
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DownstreamPacketTypeDef* freePacket;
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freePacket = Downstream_GetFreePacketImmediately();
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freePacket->CommandClass = COMMAND_CLASS_MASS_STORAGE;
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freePacket->Command = COMMAND_MSC_TEST_UNIT_READY;
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freePacket->Length16 = DOWNSTREAM_PACKET_HEADER_LEN_16 + 1;
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if (result == USBH_OK)
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{
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freePacket->Data[0] = HAL_OK;
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}
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else
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{
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freePacket->Data[0] = HAL_ERROR;
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}
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Downstream_PacketProcessor_ClassReply(freePacket);
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}
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static void Downstream_MSC_PacketProcessor_GetCapacity(DownstreamPacketTypeDef* receivedPacket)
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{
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MSC_HandleTypeDef* MSC_Handle = (MSC_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
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receivedPacket->Length16 = DOWNSTREAM_PACKET_HEADER_LEN_16 + (8 / 2);
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*(uint32_t*)&(receivedPacket->Data[0]) = MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr;
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*(uint32_t*)&(receivedPacket->Data[4]) = (uint32_t)MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_size;
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Downstream_PacketProcessor_ClassReply(receivedPacket);
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}
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static void Downstream_MSC_PacketProcessor_BeginRead(DownstreamPacketTypeDef* receivedPacket)
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{
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uint64_t readBlockAddress;
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uint32_t readBlockCount;
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uint64_t readByteCount;
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MSC_HandleTypeDef* MSC_Handle = (MSC_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
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if (receivedPacket->Length16 != (DOWNSTREAM_PACKET_HEADER_LEN_16 + ((4 * 3) / 2)))
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{
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Downstream_PacketProcessor_FreakOut();
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return;
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}
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LED_SetState(LED_STATUS_FLASH_READWRITE);
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readBlockAddress = *(uint64_t*)&(receivedPacket->Data[0]);
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readBlockCount = *(uint32_t*)&(receivedPacket->Data[8]);
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readByteCount = readBlockCount * MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_size;
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if ((readBlockAddress >= (uint64_t)MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr) ||
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((readBlockAddress + readBlockCount - 1) >= (uint64_t)MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr) ||
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(readByteCount > UINT32_MAX))
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{
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Downstream_PacketProcessor_FreakOut();
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return;
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}
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receivedPacket->Data[0] = HAL_ERROR;
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receivedPacket->Length16 = DOWNSTREAM_PACKET_HEADER_LEN_16 + 1;
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if (USBH_MSC_Read(&hUsbHostFS,
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MSC_FIXED_LUN,
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(uint32_t)readBlockAddress,
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readBlockCount,
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Downstream_MSC_PacketProcessor_RdWrCompleteCallback) == USBH_BUSY)
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{
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Downstream_ReleasePacket(receivedPacket);
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return;
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}
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//Fail:
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Downstream_PacketProcessor_ClassReply(receivedPacket);
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}
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static void Downstream_MSC_PacketProcessor_RdWrCompleteCallback(USBH_StatusTypeDef result)
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{
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if (result != USBH_OK)
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{
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Downstream_GetFreePacket(Downstream_PacketProcessor_GenericErrorReply);
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return;
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}
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Downstream_ReceivePacket(Downstream_PacketProcessor);
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}
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#ifdef CONFIG_MASS_STORAGE_WRITES_PERMITTED
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static void Downstream_MSC_PacketProcessor_BeginWrite(DownstreamPacketTypeDef* receivedPacket)
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{
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uint64_t writeBlockAddress;
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uint32_t writeBlockCount;
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uint64_t writeByteCount;
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MSC_HandleTypeDef* MSC_Handle = (MSC_HandleTypeDef*)hUsbHostFS.pActiveClass->pData;
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if (receivedPacket->Length16 != (DOWNSTREAM_PACKET_HEADER_LEN_16 + ((4 * 3) / 2)))
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{
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Downstream_PacketProcessor_FreakOut();
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return;
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}
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writeBlockAddress = *(uint64_t*)&(receivedPacket->Data[0]);
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writeBlockCount = *(uint32_t*)&(receivedPacket->Data[8]);
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writeByteCount = writeBlockCount * MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_size;
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if ((writeBlockAddress >= (uint64_t)MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr) ||
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((writeBlockAddress + writeBlockCount - 1) >= (uint64_t)MSC_Handle->unit[MSC_FIXED_LUN].capacity.block_nbr) ||
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(writeByteCount > UINT32_MAX))
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{
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Downstream_PacketProcessor_FreakOut();
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return;
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}
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ReadStreamPacket = NULL; //Prepare for GetStreamDataPacket's use
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ReadStreamBusy = 0;
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ByteCount = (uint32_t)writeByteCount;
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receivedPacket->Data[0] = HAL_ERROR;
|
||||
receivedPacket->Length16 = DOWNSTREAM_PACKET_HEADER_LEN_16 + 1;
|
||||
|
||||
//Our host stack has no way to detect if write-protection is enabled.
|
||||
//So currently we can't return HAL_BUSY to Upstream in this situation.
|
||||
if (USBH_MSC_Write(&hUsbHostFS,
|
||||
MSC_FIXED_LUN,
|
||||
(uint32_t)writeBlockAddress,
|
||||
writeBlockCount,
|
||||
Downstream_MSC_PacketProcessor_RdWrCompleteCallback) == USBH_BUSY)
|
||||
{
|
||||
Downstream_ReleasePacket(receivedPacket);
|
||||
return;
|
||||
}
|
||||
|
||||
//Fail:
|
||||
Downstream_PacketProcessor_ClassReply(receivedPacket);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
//Used by USB MSC host driver
|
||||
StatusTypeDef Downstream_MSC_PutStreamDataPacket(DownstreamPacketTypeDef* packetToSend,
|
||||
uint32_t dataLength8)
|
||||
{
|
||||
if ((dataLength8 % 2) != 0)
|
||||
{
|
||||
return HAL_ERROR;
|
||||
}
|
||||
|
||||
packetToSend->Length16 = (dataLength8 / 2) + DOWNSTREAM_PACKET_HEADER_LEN_16;
|
||||
packetToSend->CommandClass = COMMAND_CLASS_MASS_STORAGE | COMMAND_CLASS_DATA_FLAG;
|
||||
packetToSend->Command = COMMAND_MSC_READ;
|
||||
return Downstream_TransmitPacket(packetToSend);
|
||||
}
|
||||
|
||||
|
||||
#ifdef CONFIG_MASS_STORAGE_WRITES_PERMITTED
|
||||
//Used by USB MSC host driver
|
||||
StatusTypeDef Downstream_MSC_GetStreamDataPacket(DownstreamMSCCallbackPacketTypeDef callback)
|
||||
{
|
||||
GetStreamDataCallback = callback;
|
||||
|
||||
if (ReadStreamBusy != 0)
|
||||
{
|
||||
return HAL_OK;
|
||||
}
|
||||
ReadStreamBusy = 1;
|
||||
|
||||
if (ReadStreamPacket && GetStreamDataCallback) //Do we have a stored packet and an address to send it?
|
||||
{
|
||||
Downstream_MSC_GetStreamDataPacketCallback(ReadStreamPacket); //Send it now!
|
||||
ReadStreamPacket = NULL;
|
||||
return HAL_OK; //Our callback will call us again, so we don't need to get a packet in this case.
|
||||
}
|
||||
return Downstream_ReceivePacket(Downstream_MSC_GetStreamDataPacketCallback);
|
||||
}
|
||||
|
||||
|
||||
void Downstream_MSC_GetStreamDataPacketCallback(DownstreamPacketTypeDef* receivedPacket)
|
||||
{
|
||||
uint16_t dataLength8;
|
||||
|
||||
ReadStreamBusy = 0;
|
||||
if (GetStreamDataCallback == NULL)
|
||||
{
|
||||
ReadStreamPacket = receivedPacket; //We used up our callback already, so save this one for later.
|
||||
return;
|
||||
}
|
||||
|
||||
dataLength8 = (receivedPacket->Length16 - DOWNSTREAM_PACKET_HEADER_LEN_16) * 2;
|
||||
|
||||
if ((receivedPacket->CommandClass != (COMMAND_CLASS_MASS_STORAGE | COMMAND_CLASS_DATA_FLAG)) || //Must be MSC command with data flag set
|
||||
(receivedPacket->Command != COMMAND_MSC_WRITE) || //Must be write command
|
||||
(receivedPacket->Length16 <= DOWNSTREAM_PACKET_HEADER_LEN_16) || //Should be at least one data byte in the packet.
|
||||
(dataLength8 > ByteCount))
|
||||
{
|
||||
Downstream_PacketProcessor_FreakOut();
|
||||
return;
|
||||
}
|
||||
|
||||
ByteCount -= dataLength8;
|
||||
GetStreamDataCallback(receivedPacket, dataLength8); //usb_msc_scsi will use this packet, so don't release now
|
||||
if (ByteCount > 0)
|
||||
{
|
||||
Downstream_MSC_GetStreamDataPacket(NULL); //Try to get the next packet now, before USB asks for it
|
||||
}
|
||||
|
||||
}
|
||||
#endif //#ifdef CONFIG_MASS_STORAGE_WRITES_PERMITTED
|
||||
|
||||
|
||||
|
||||
static void Downstream_MSC_PacketProcessor_Disconnect(DownstreamPacketTypeDef* receivedPacket)
|
||||
{
|
||||
Downstream_ReleasePacket(receivedPacket);
|
||||
|
||||
USBH_MSC_StartStopUnit(&hUsbHostFS,
|
||||
MSC_FIXED_LUN,
|
||||
MSC_START_STOP_EJECT_FLAG,
|
||||
Downstream_MSC_PacketProcessor_DisconnectCallback);
|
||||
}
|
||||
|
||||
|
||||
|
||||
static void Downstream_MSC_PacketProcessor_DisconnectCallback(USBH_StatusTypeDef result)
|
||||
{
|
||||
DownstreamPacketTypeDef* freePacket;
|
||||
|
||||
if (result == USBH_OK)
|
||||
{
|
||||
freePacket = Downstream_GetFreePacketImmediately();
|
||||
freePacket->CommandClass = COMMAND_CLASS_MASS_STORAGE;
|
||||
freePacket->Command = COMMAND_MSC_DISCONNECT;
|
||||
freePacket->Length16 = DOWNSTREAM_PACKET_HEADER_LEN_16;
|
||||
Downstream_PacketProcessor_ClassReply(freePacket);
|
||||
}
|
||||
}
|
||||
|
||||
#endif //#ifdef CONFIG_MASS_STORAGE_ENABLED
|
||||
|
||||
@ -0,0 +1,475 @@
|
||||
/*
|
||||
* upstream_spi.c
|
||||
*
|
||||
* Created on: 24/07/2015
|
||||
* 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/.
|
||||
*/
|
||||
|
||||
|
||||
#include "downstream_interface_def.h"
|
||||
#include "downstream_spi.h"
|
||||
#include "downstream_statemachine.h"
|
||||
#include "gd32vf103.h"
|
||||
#include "gd32vf103v_eval.h"
|
||||
|
||||
|
||||
//SPI_HandleTypeDef Hspi1;
|
||||
DownstreamPacketTypeDef DownstreamPacket0;
|
||||
DownstreamPacketTypeDef DownstreamPacket1;
|
||||
DownstreamPacketTypeDef* CurrentWorkingPacket;
|
||||
DownstreamPacketTypeDef* NextTxPacket = NULL;
|
||||
|
||||
InterfaceStateTypeDef DownstreamInterfaceState = DOWNSTREAM_INTERFACE_IDLE;
|
||||
FreePacketCallbackTypeDef PendingFreePacketCallback = NULL; //Indicates someone is waiting for a packet buffer to become available
|
||||
SpiPacketReceivedCallbackTypeDef ReceivePacketCallback = NULL; //Indicates someone is waiting for a received packet
|
||||
|
||||
uint32_t TemporaryIncomingPacketLength = 0;
|
||||
uint8_t SpiInterruptCompleted = 0;
|
||||
|
||||
|
||||
StatusTypeDef Downstream_CheckPreparePacketReception(void);
|
||||
void Downstream_PrepareReceivePacketSize(DownstreamPacketTypeDef* freePacket);
|
||||
|
||||
|
||||
|
||||
void Downstream_InitSPI(void)
|
||||
{
|
||||
DownstreamPacket0.Busy = NOT_BUSY;
|
||||
DownstreamPacket1.Busy = NOT_BUSY;
|
||||
|
||||
rcu_periph_clock_enable(RCU_GPIOA);
|
||||
rcu_periph_clock_enable(RCU_AF);
|
||||
rcu_periph_clock_enable(RCU_DMA0);
|
||||
rcu_periph_clock_enable(RCU_SPI0);
|
||||
|
||||
gpio_init(GPIOA, GPIO_MODE_AF_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_5 |GPIO_PIN_6| GPIO_PIN_7);
|
||||
gpio_init(GPIOA, GPIO_MODE_IN_FLOATING, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
|
||||
|
||||
dma_parameter_struct dma_init_struct;
|
||||
|
||||
/* SPI0 transmit dma config:DMA0-DMA_CH2 */
|
||||
dma_deinit(DMA0, DMA_CH2);
|
||||
dma_struct_para_init(&dma_init_struct);
|
||||
|
||||
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI0);
|
||||
dma_init_struct.memory_addr = (uint32_t)spi0_send_array;
|
||||
dma_init_struct.direction = DMA_MEMORY_TO_PERIPHERAL;
|
||||
dma_init_struct.memory_width = DMA_MEMORY_WIDTH_8BIT;
|
||||
dma_init_struct.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;
|
||||
dma_init_struct.priority = DMA_PRIORITY_LOW;
|
||||
dma_init_struct.number = ARRAYSIZE;
|
||||
dma_init_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
|
||||
dma_init_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
|
||||
dma_init(DMA0, DMA_CH2, &dma_init_struct);
|
||||
/* configure DMA mode */
|
||||
dma_circulation_disable(DMA0, DMA_CH2);
|
||||
dma_memory_to_memory_disable(DMA0, DMA_CH2);
|
||||
dma_interrupt_enable(DMA0, DMA_CH2, DMA_INT_FTF);
|
||||
|
||||
/* SPI0 receive dma config:DMA0-DMA_CH1 */
|
||||
dma_deinit(DMA0, DMA_CH1);
|
||||
dma_init_struct.periph_addr = (uint32_t)&SPI_DATA(SPI0);
|
||||
dma_init_struct.memory_addr = (uint32_t)spi0_receive_array;
|
||||
dma_init_struct.direction = DMA_PERIPHERAL_TO_MEMORY;
|
||||
dma_init_struct.priority = DMA_PRIORITY_HIGH;
|
||||
dma_init(DMA0, DMA_CH1, &dma_init_struct);
|
||||
/* configure DMA mode */
|
||||
dma_circulation_disable(DMA0, DMA_CH1);
|
||||
dma_memory_to_memory_disable(DMA0, DMA_CH1);
|
||||
dma_interrupt_enable(DMA0, DMA_CH1, DMA_INT_FTF);
|
||||
|
||||
spi_parameter_struct spi_init_struct;
|
||||
/* deinitilize SPI and the parameters */
|
||||
spi_i2s_deinit(SPI0);
|
||||
spi_struct_para_init(&spi_init_struct);
|
||||
|
||||
/* SPI0 parameter config */
|
||||
spi_init_struct.trans_mode = SPI_TRANSMODE_FULLDUPLEX;
|
||||
spi_init_struct.device_mode = SPI_SLAVE;
|
||||
spi_init_struct.frame_size = SPI_FRAMESIZE_16BIT;
|
||||
spi_init_struct.clock_polarity_phase = SPI_CK_PL_LOW_PH_1EDGE;
|
||||
spi_init_struct.nss = SPI_NSS_SOFT;
|
||||
spi_init_struct.prescale = SPI_PSC_2;
|
||||
spi_init_struct.endian = SPI_ENDIAN_LSB;
|
||||
|
||||
spi_init(SPI0, &spi_init_struct);
|
||||
spi_crc_polynomial_set(SPI0,7);
|
||||
spi_enable(SPI0);
|
||||
|
||||
/* DMA channel enable */
|
||||
dma_channel_enable(DMA0, DMA_CH1);
|
||||
dma_channel_enable(DMA0, DMA_CH2);
|
||||
|
||||
/* SPI DMA enable */
|
||||
spi_dma_enable(SPI0, SPI_DMA_TRANSMIT);
|
||||
spi_dma_enable(SPI0, SPI_DMA_RECEIVE);
|
||||
|
||||
eclic_irq_enable(DMA1_Channel0_IRQn,1,0);
|
||||
spi_i2s_interrupt_enable(SPI0, SPI_I2S_INT_TBE);
|
||||
}
|
||||
|
||||
|
||||
//Used by downstream state machine and USB host classes.
|
||||
StatusTypeDef Downstream_GetFreePacket(FreePacketCallbackTypeDef callback)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
//Do we already have a queued callback?
|
||||
if (PendingFreePacketCallback != NULL)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
//Check if there is a free buffer now
|
||||
if (DownstreamPacket0.Busy == NOT_BUSY)
|
||||
{
|
||||
DownstreamPacket0.Busy = BUSY;
|
||||
callback(&DownstreamPacket0);
|
||||
return STATUS_OK;
|
||||
}
|
||||
if (DownstreamPacket1.Busy == NOT_BUSY)
|
||||
{
|
||||
DownstreamPacket1.Busy = BUSY;
|
||||
callback(&DownstreamPacket1);
|
||||
return STATUS_OK;
|
||||
}
|
||||
|
||||
//Otherwise save requested address for when a buffer becomes free in the future
|
||||
PendingFreePacketCallback = callback;
|
||||
return STATUS_OK;
|
||||
}
|
||||
|
||||
|
||||
|
||||
DownstreamPacketTypeDef* Downstream_GetFreePacketImmediately(void)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
//We are expecting a free buffer now
|
||||
if (DownstreamPacket0.Busy == NOT_BUSY)
|
||||
{
|
||||
DownstreamPacket0.Busy = BUSY;
|
||||
return &DownstreamPacket0;
|
||||
}
|
||||
if (DownstreamPacket1.Busy == NOT_BUSY)
|
||||
{
|
||||
DownstreamPacket1.Busy = BUSY;
|
||||
return &DownstreamPacket1;
|
||||
}
|
||||
|
||||
//Should not happen:
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//Used by Downstream state machine and USB host classes.
|
||||
void Downstream_ReleasePacket(DownstreamPacketTypeDef* packetToRelease)
|
||||
{
|
||||
FreePacketCallbackTypeDef tempCallback;
|
||||
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
if ((packetToRelease != &DownstreamPacket0) &&
|
||||
(packetToRelease != &DownstreamPacket1))
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
|
||||
if (PendingFreePacketCallback != NULL)
|
||||
{
|
||||
tempCallback = PendingFreePacketCallback; //In extreme situations, running this callback can trigger another request for a free packet,
|
||||
PendingFreePacketCallback = NULL; //thereby causing GetFreePacket to freak out. So we need to clear the callback indicator first.
|
||||
tempCallback(packetToRelease);
|
||||
}
|
||||
else
|
||||
{
|
||||
packetToRelease->Busy = NOT_BUSY;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//Used by Downstream state machine and USB classes.
|
||||
//Ok to call when idle or transmitting.
|
||||
//Not OK to call when receiving or awaiting reception.
|
||||
StatusTypeDef Downstream_ReceivePacket(SpiPacketReceivedCallbackTypeDef callback)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
if ((DownstreamInterfaceState == DOWNSTREAM_INTERFACE_RX_SIZE_WAIT) ||
|
||||
(DownstreamInterfaceState == DOWNSTREAM_INTERFACE_RX_PACKET_WAIT) ||
|
||||
(ReceivePacketCallback != NULL))
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
ReceivePacketCallback = callback;
|
||||
return Downstream_CheckPreparePacketReception();
|
||||
}
|
||||
|
||||
|
||||
//Internal use only
|
||||
StatusTypeDef Downstream_CheckPreparePacketReception(void)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
if (DownstreamInterfaceState == DOWNSTREAM_INTERFACE_IDLE)
|
||||
{
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_RX_SIZE_WAIT;
|
||||
return Downstream_GetFreePacket(Downstream_PrepareReceivePacketSize);
|
||||
}
|
||||
return STATUS_OK;
|
||||
}
|
||||
|
||||
|
||||
//Internal use only
|
||||
void Downstream_PrepareReceivePacketSize(DownstreamPacketTypeDef* freePacket)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
if (DownstreamInterfaceState != DOWNSTREAM_INTERFACE_RX_SIZE_WAIT)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
CurrentWorkingPacket = freePacket;
|
||||
CurrentWorkingPacket->Length16 = 0;
|
||||
if (HAL_SPI_TransmitReceive_DMA(&Hspi1,
|
||||
(uint8_t*)&CurrentWorkingPacket->Length16,
|
||||
(uint8_t*)&CurrentWorkingPacket->Length16,
|
||||
2) != HAL_OK) //We only need to read one word, but the peripheral library freaks out...
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
|
||||
UPSTREAM_TX_REQUEST_ASSERT;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//Used by Downstream state machine and USB classes.
|
||||
//Call when idle or transmitting.
|
||||
//It doesn't make sense to call when receiving or awaiting reception.
|
||||
StatusTypeDef Downstream_TransmitPacket(DownstreamPacketTypeDef* packetToWrite)
|
||||
{
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
//Sanity checks
|
||||
if ((packetToWrite != &DownstreamPacket0) &&
|
||||
(packetToWrite != &DownstreamPacket1))
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
if ((packetToWrite->Busy != BUSY) ||
|
||||
(packetToWrite->Length16 < DOWNSTREAM_PACKET_LEN_MIN_16) ||
|
||||
(packetToWrite->Length16 > DOWNSTREAM_PACKET_LEN_16))
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
if (NextTxPacket != NULL)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
switch (DownstreamInterfaceState)
|
||||
{
|
||||
case DOWNSTREAM_INTERFACE_TX_SIZE_WAIT:
|
||||
case DOWNSTREAM_INTERFACE_TX_PACKET_WAIT:
|
||||
NextTxPacket = packetToWrite;
|
||||
break;
|
||||
|
||||
case DOWNSTREAM_INTERFACE_IDLE:
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_TX_SIZE_WAIT;
|
||||
CurrentWorkingPacket = packetToWrite;
|
||||
|
||||
if (HAL_SPI_TransmitReceive_DMA(&Hspi1,
|
||||
(uint8_t*)&CurrentWorkingPacket->Length16,
|
||||
(uint8_t*)&TemporaryIncomingPacketLength,
|
||||
2) != HAL_OK) //We only need to write one word, but the peripheral library freaks out...
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
UPSTREAM_TX_REQUEST_ASSERT;
|
||||
break;
|
||||
|
||||
default:
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return STATUS_ERROR;
|
||||
}
|
||||
|
||||
return STATUS_OK;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//Do stuff at main loop priority after SPI transaction is complete
|
||||
void Downstream_SPIProcess(void)
|
||||
{
|
||||
SpiPacketReceivedCallbackTypeDef tempPacketCallback;
|
||||
|
||||
if (SpiInterruptCompleted == 0)
|
||||
{
|
||||
return;
|
||||
}
|
||||
SpiInterruptCompleted = 0;
|
||||
|
||||
if (DownstreamInterfaceState >= DOWNSTREAM_INTERFACE_ERROR)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
//Finished transmitting packet size
|
||||
if (DownstreamInterfaceState == DOWNSTREAM_INTERFACE_TX_SIZE_WAIT)
|
||||
{
|
||||
if ((uint16_t)TemporaryIncomingPacketLength != 0)
|
||||
{
|
||||
//Currently we just freak out if Upstream sends us an unexpected command.
|
||||
//Theoretically we could reset our downstream state machine and accept the new command...
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_TX_PACKET_WAIT;
|
||||
if (HAL_SPI_TransmitReceive_DMA(&Hspi1,
|
||||
&CurrentWorkingPacket->CommandClass,
|
||||
&CurrentWorkingPacket->CommandClass,
|
||||
((CurrentWorkingPacket->Length16 < 2) ? 2 : CurrentWorkingPacket->Length16)) != HAL_OK)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
UPSTREAM_TX_REQUEST_ASSERT;
|
||||
return;
|
||||
}
|
||||
|
||||
//Finished transmitting packet body
|
||||
if (DownstreamInterfaceState == DOWNSTREAM_INTERFACE_TX_PACKET_WAIT)
|
||||
{
|
||||
Downstream_ReleasePacket(CurrentWorkingPacket);
|
||||
if (NextTxPacket != NULL)
|
||||
{
|
||||
//NextTxPacket has already passed the checks in Downstream_TransmitPacket.
|
||||
//So we just need to pass it to HAL_SPI_Transmit_DMA.
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_TX_SIZE_WAIT;
|
||||
CurrentWorkingPacket = NextTxPacket;
|
||||
NextTxPacket = NULL;
|
||||
if (HAL_SPI_TransmitReceive_DMA(&Hspi1,
|
||||
(uint8_t*)&CurrentWorkingPacket->Length16,
|
||||
(uint8_t*)&TemporaryIncomingPacketLength,
|
||||
2) != HAL_OK) //We only need to write one word, but the peripheral library freaks out...
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
UPSTREAM_TX_REQUEST_ASSERT;
|
||||
return;
|
||||
}
|
||||
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_IDLE;
|
||||
if (ReceivePacketCallback != NULL)
|
||||
{
|
||||
Downstream_CheckPreparePacketReception();
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
if (DownstreamInterfaceState == DOWNSTREAM_INTERFACE_RX_SIZE_WAIT)
|
||||
{
|
||||
if ((CurrentWorkingPacket->Length16 < DOWNSTREAM_PACKET_LEN_MIN_16) ||
|
||||
(CurrentWorkingPacket->Length16 > DOWNSTREAM_PACKET_LEN_16))
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_RX_PACKET_WAIT;
|
||||
if (HAL_SPI_TransmitReceive_DMA(&Hspi1,
|
||||
&CurrentWorkingPacket->CommandClass,
|
||||
&CurrentWorkingPacket->CommandClass,
|
||||
((CurrentWorkingPacket->Length16 < 2) ? 2 : CurrentWorkingPacket->Length16)) != HAL_OK)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
UPSTREAM_TX_REQUEST_ASSERT;
|
||||
return;
|
||||
}
|
||||
|
||||
if (DownstreamInterfaceState == DOWNSTREAM_INTERFACE_RX_PACKET_WAIT)
|
||||
{
|
||||
DownstreamInterfaceState = DOWNSTREAM_INTERFACE_IDLE;
|
||||
if (ReceivePacketCallback == NULL)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
return;
|
||||
}
|
||||
//Packet processor may want to receive another packet immediately,
|
||||
//so clear ReceivePacketCallback before the call.
|
||||
//It is the callback's responsibility to release the packet buffer we are passing to it!
|
||||
tempPacketCallback = ReceivePacketCallback;
|
||||
ReceivePacketCallback = NULL;
|
||||
tempPacketCallback(CurrentWorkingPacket);
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
//case default:
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//Called at the end of the SPI TxRx DMA transfer,
|
||||
//at DMA2 interrupt priority. Assume *hspi points to our hspi1.
|
||||
//We use TxRx to send our reply packet to check if Upstream was trying
|
||||
//to send us a packet at the same time.
|
||||
//We also TxRx our packet body because the SPI silicon is buggy at the end of
|
||||
//a transmit-only DMA transfer with CRC! (it does not clear RXNE flag on request)
|
||||
void DMA_SPI_TxRxCpltCallback(void)
|
||||
{
|
||||
UPSTREAM_TX_REQUEST_DEASSERT;
|
||||
SpiInterruptCompleted = 1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
//Something bad happened! Possibly CRC error...
|
||||
/*void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi)
|
||||
{
|
||||
DOWNSTREAM_SPI_FREAKOUT;
|
||||
}*/
|
||||
|
||||
Loading…
Reference in new issue