100 lines
3.6 KiB
C++
100 lines
3.6 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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#include "int_n.h"
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#include "BSP.h"
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#include "BSP_PD.h"
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#include "fusb302b.h"
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#include "fusbpd.h"
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#include "policy_engine.h"
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#include "protocol_tx.h"
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#include "task.h"
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#include <pd.h>
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#include <string.h>
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volatile osThreadId InterruptHandler::TaskHandle = NULL;
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uint32_t InterruptHandler::TaskBuffer[InterruptHandler::TaskStackSize];
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osStaticThreadDef_t InterruptHandler::TaskControlBlock;
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union pd_msg InterruptHandler::tempMessage;
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void InterruptHandler::init() {
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TaskHandle = NULL;
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osThreadStaticDef(intTask, Thread, PDB_PRIO_PRL_INT_N, 0, TaskStackSize, TaskBuffer, &TaskControlBlock);
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TaskHandle = osThreadCreate(osThread(intTask), NULL);
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}
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void InterruptHandler::readPendingMessage() {
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/* Get a buffer to read the message into. Guaranteed to not fail
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* because we have a big enough pool and are careful. */
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memset(&tempMessage, 0, sizeof(tempMessage));
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/* Read the message */
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fusb_read_message(&tempMessage);
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/* If it's a Soft_Reset, go to the soft reset state */
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if (PD_MSGTYPE_GET(&tempMessage) == PD_MSGTYPE_SOFT_RESET && PD_NUMOBJ_GET(&tempMessage) == 0) {
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/* TX transitions to its reset state */
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ProtocolTransmit::notify(ProtocolTransmit::Notifications::PDB_EVT_PRLTX_RESET);
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} else {
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/* Tell ProtocolTX to discard the message being transmitted */
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ProtocolTransmit::notify(ProtocolTransmit::Notifications::PDB_EVT_PRLTX_DISCARD);
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/* Pass the message to the policy engine. */
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PolicyEngine::handleMessage(&tempMessage);
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}
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}
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void InterruptHandler::Thread(const void *arg) {
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(void)arg;
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union fusb_status status;
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for (;;) {
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// If the irq is low continue, otherwise wait for irq or timeout
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if (!getFUS302IRQLow()) {
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xTaskNotifyWait(0x00, 0x0F, NULL, TICKS_SECOND * 30);
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}
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/* Read the FUSB302B status and interrupt registers */
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fusb_get_status(&status);
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/* If the I_GCRCSENT flag is set, tell the Protocol RX thread */
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// This means a message was recieved with a good CRC
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if (status.interruptb & FUSB_INTERRUPTB_I_GCRCSENT) {
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readPendingMessage();
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}
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/* If the I_TXSENT or I_RETRYFAIL flag is set, tell the Protocol TX
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* thread */
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if (status.interrupta & FUSB_INTERRUPTA_I_TXSENT) {
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ProtocolTransmit::notify(ProtocolTransmit::Notifications::PDB_EVT_PRLTX_I_TXSENT);
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}
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if (status.interrupta & FUSB_INTERRUPTA_I_RETRYFAIL) {
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ProtocolTransmit::notify(ProtocolTransmit::Notifications::PDB_EVT_PRLTX_I_RETRYFAIL);
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}
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/* If the I_OCP_TEMP and OVRTEMP flags are set, tell the Policy
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* Engine thread */
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if ((status.interrupta & FUSB_INTERRUPTA_I_OCP_TEMP) && (status.status1 & FUSB_STATUS1_OVRTEMP)) {
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PolicyEngine::notify(PolicyEngine::Notifications::PDB_EVT_PE_I_OVRTEMP);
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}
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}
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}
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void InterruptHandler::irqCallback() {
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if (TaskHandle != NULL) {
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BaseType_t taskWoke = pdFALSE;
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xTaskNotifyFromISR(TaskHandle, 0x01, eNotifyAction::eSetBits, &taskWoke);
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portYIELD_FROM_ISR(taskWoke);
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}
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}
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