60 lines
2.0 KiB
C++
60 lines
2.0 KiB
C++
/*
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* PD Buddy Firmware Library - USB Power Delivery for everyone
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* Copyright 2017-2018 Clayton G. Hobbs
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PDB_PROTOCOL_RX_H
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#define PDB_PROTOCOL_RX_H
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#include <stdint.h>
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#include <pd.h>
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/* Events for the Protocol RX thread */
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#define PDB_EVT_PRLRX_RESET EVENT_MASK(0)
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#define PDB_EVT_PRLRX_I_GCRCSENT EVENT_MASK(1)
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#define PDB_EVT_PRLRX_I_RXPEND EVENT_MASK(2)
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class ProtocolReceive {
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public:
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static void init();
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static void notify(uint32_t notification);
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private:
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static void thread(const void *args);
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static EventGroupHandle_t xEventGroupHandle;
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static StaticEventGroup_t xCreatedEventGroup;
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static osThreadId TaskHandle;
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static const size_t TaskStackSize = 1024 / 4;
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static uint32_t TaskBuffer[TaskStackSize];
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static osStaticThreadDef_t TaskControlBlock;
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/*
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* Protocol RX machine states
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*
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* There is no Send_GoodCRC state because the PHY sends the GoodCRC for us.
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* All transitions that would go to that state instead go to Check_MessageID.
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*/
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enum protocol_rx_state { PRLRxWaitPHY, PRLRxReset, PRLRxCheckMessageID, PRLRxStoreMessageID };
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static protocol_rx_state protocol_rx_store_messageid();
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static protocol_rx_state protocol_rx_check_messageid();
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static protocol_rx_state protocol_rx_reset();
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static protocol_rx_state protocol_rx_wait_phy();
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static union pd_msg tempMessage;
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static uint32_t waitForEvent(uint32_t mask, TickType_t ticksToWait = portMAX_DELAY);
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};
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#endif /* PDB_PROTOCOL_RX_H */
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