305 lines
8.7 KiB
C++
305 lines
8.7 KiB
C++
/**
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* @file HIP9011.cpp
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* @brief HIP9011/TPIC8101 driver
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*
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* pin1 VDD
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* pin2 GND
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*
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* pin8 Chip Select - CS
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* pin11 Slave Data Out - MISO-
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* pin12 Slave Data In - MOSI
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* pin13 SPI clock - SCLK
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*
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*
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*
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* http://www.ti.com/lit/ds/symlink/tpic8101.pdf
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* http://www.intersil.com/content/dam/Intersil/documents/hip9/hip9011.pdf
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* http://www.intersil.com/content/dam/Intersil/documents/an97/an9770.pdf
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* http://e2e.ti.com/cfs-file/__key/telligent-evolution-components-attachments/00-26-01-00-00-42-36-40/TPIC8101-Training.pdf
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*
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* max SPI frequency: 5MHz max
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*
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* @date Nov 27, 2013
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* @author Andrey Belomutskiy, (c) 2012-2015
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*/
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#include "main.h"
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#include "engine.h"
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#include "settings.h"
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#include "pin_repository.h"
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#include "hardware.h"
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#include "rpm_calculator.h"
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#include "trigger_central.h"
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#include "hip9011_lookup.h"
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#include "HIP9011.h"
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#include "adc_inputs.h"
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#include "efilib2.h"
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#if EFI_HIP_9011 || defined(__DOXYGEN__)
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static NamedOutputPin intHold("HIP");
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static OutputPin hipCs;
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extern pin_output_mode_e DEFAULT_OUTPUT;
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extern uint32_t lastExecutionCount;
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uint32_t hipLastExecutionCount;
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/**
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* band index is only send to HIP chip on startup
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*/
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static int bandIndex;
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static int currentGainIndex = -1;
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static int currentIntergratorIndex = -1;
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static int settingUpdateCount = 0;
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static int totalKnockEventsCount = 0;
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static efitimeus_t timeOfLastKnockEvent = 0;
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/**
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* Int/Hold pin is controlled from scheduler callbacks which are set according to current RPM
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*
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* The following state make sure that we only have SPI communication while not integrating and that we take
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* a good ADC reading after integrating.
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*
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* Once integtation window is over, we wait for the 2nd ADC callback and then initiate SPI communication if needed
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*
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* hipOutput should be set to used FAST adc device
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*/
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static hip_state_e state = NOT_READY;
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static scheduling_s startTimer[2];
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static scheduling_s endTimer[2];
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static Logging *logger;
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// SPI_CR1_BR_1 // 5MHz
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// SPI_CR1_CPHA Clock Phase
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// todo: nicer method which would mention SPI speed explicitly?
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static SPIConfig spicfg = { NULL,
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/* HW dependent part.*/
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NULL, 0,
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SPI_CR1_MSTR |
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//SPI_CR1_BR_1 // 5MHz
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SPI_CR1_CPHA | SPI_CR1_BR_0 | SPI_CR1_BR_1 | SPI_CR1_BR_2 };
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static unsigned char tx_buff[1];
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static unsigned char rx_buff[1];
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static int nonZeroResponse = 0;
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#define SPI_SYNCHRONOUS(value) \
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spiSelect(driver); \
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tx_buff[0] = value; \
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spiExchange(driver, 1, tx_buff, rx_buff); \
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spiUnselect(driver); \
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if (rx_buff[0] != 0) nonZeroResponse++;
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// todo: make this configurable
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static SPIDriver *driver = &SPID2;
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EXTERN_ENGINE
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;
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static void showHipInfo(void) {
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if (!boardConfiguration->isHip9011Enabled) {
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scheduleMsg(logger, "hip9011 driver not active");
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return;
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}
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printSpiState(logger, boardConfiguration);
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scheduleMsg(logger, "bore=%f freq=%f", engineConfiguration->cylinderBore, BAND(engineConfiguration->cylinderBore));
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scheduleMsg(logger, "band_index=%d gain %f/index=%d", bandIndex, boardConfiguration->hip9011Gain, currentGainIndex);
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scheduleMsg(logger, "integrator index=%d hip_threshold=%f totalKnockEventsCount=%d", currentIntergratorIndex,
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engineConfiguration->hipThreshold, totalKnockEventsCount);
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scheduleMsg(logger, "spi= int=%s response count=%d", hwPortname(boardConfiguration->hip9011IntHoldPin),
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nonZeroResponse);
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scheduleMsg(logger, "CS=%s updateCount=%d", hwPortname(boardConfiguration->hip9011CsPin), settingUpdateCount);
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scheduleMsg(logger, "value=%f@#%d", getVoltageDivided("hip", engineConfiguration->hipOutputChannel),
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engineConfiguration->hipOutputChannel);
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}
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void setHip9011FrankensoPinout(void) {
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/**
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* SPI on PB13/14/15
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*/
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boardConfiguration->isHip9011Enabled = true;
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boardConfiguration->hip9011CsPin = GPIOD_0;
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boardConfiguration->hip9011IntHoldPin = GPIOB_11;
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boardConfiguration->is_enabled_spi_2 = true;
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boardConfiguration->hip9011Gain = 0.1;
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engineConfiguration->hipThreshold = 2;
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engineConfiguration->hipOutputChannel = EFI_ADC_10;
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}
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static void startIntegration(void) {
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if (state == READY_TO_INTEGRATE) {
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/**
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* SPI communication is only allowed while not integrating, so we postpone the exchange
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* until we are done integrating
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*/
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state = IS_INTEGRATING;
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turnPinHigh(&intHold);
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}
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}
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static void endIntegration(void) {
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/**
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* isIntegrating could be 'false' if an SPI command was pending thus we did not integrate during this
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* engine cycle
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*/
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if (state == IS_INTEGRATING) {
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turnPinLow(&intHold);
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state = WAITING_FOR_ADC_TO_SKIP;
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}
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}
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/**
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* Shaft Position callback used to start or finish HIP integration
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*/
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static void intHoldCallback(trigger_event_e ckpEventType, uint32_t index DECLARE_ENGINE_PARAMETER_S) {
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// this callback is invoked on interrupt thread
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engine->m.beforeHipCb = GET_TIMESTAMP();
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if (index != 0)
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return;
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int rpm = engine->rpmCalculator.rpmValue;
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if (!isValidRpm(rpm))
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return;
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int structIndex = getRevolutionCounter() % 2;
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// todo: schedule this based on closest trigger event, same as ignition works
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scheduleByAngle(rpm, &startTimer[structIndex], engineConfiguration->knockDetectionWindowStart,
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(schfunc_t) &startIntegration, NULL, &engine->rpmCalculator);
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hipLastExecutionCount = lastExecutionCount;
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scheduleByAngle(rpm, &endTimer[structIndex], engineConfiguration->knockDetectionWindowEnd,
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(schfunc_t) &endIntegration,
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NULL, &engine->rpmCalculator);
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engine->m.hipCbTime = GET_TIMESTAMP() - engine->m.beforeHipCb;
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}
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static void setGain(float value) {
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boardConfiguration->hip9011Gain = value;
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showHipInfo();
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}
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static void endOfSpiCommunication(SPIDriver *spip) {
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spiUnselectI(driver);
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state = READY_TO_INTEGRATE;
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}
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void hipAdcCallback(adcsample_t value) {
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if (state == WAITING_FOR_ADC_TO_SKIP) {
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state = WAITING_FOR_RESULT_ADC;
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} else if (state == WAITING_FOR_RESULT_ADC) {
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if (adcToVoltsDivided(value) > engineConfiguration->hipThreshold) {
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totalKnockEventsCount++;
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timeOfLastKnockEvent = getTimeNowUs();
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}
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int integratorIndex = getIntegrationIndexByRpm(engine->rpmCalculator.rpmValue);
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int gainIndex = getHip9011GainIndex(boardConfiguration->hip9011Gain);
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if (currentGainIndex != gainIndex) {
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state = IS_SENDING_SPI_COMMAND;
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tx_buff[0] = gainIndex;
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currentGainIndex = gainIndex;
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spiSelectI(driver);
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spiStartExchangeI(driver, 1, tx_buff, rx_buff);
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} else if (currentIntergratorIndex != integratorIndex) {
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state = IS_SENDING_SPI_COMMAND;
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tx_buff[0] = integratorIndex;
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currentIntergratorIndex = integratorIndex;
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spiSelectI(driver);
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spiStartExchangeI(driver, 1, tx_buff, rx_buff);
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} else {
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state = READY_TO_INTEGRATE;
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}
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}
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}
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static bool_t needToInit = true;
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static void hipStartupCode(void) {
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// '0' for 4MHz
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SPI_SYNCHRONOUS(SET_PRESCALER_CMD + 0);
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// '0' for channel #1
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SPI_SYNCHRONOUS(SET_CHANNEL_CMD + 0);
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// band index depends on cylinder bore
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SPI_SYNCHRONOUS(SET_BAND_PASS_CMD + bandIndex);
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/**
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* Let's restart SPI to switch it from synchronous mode into
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* asynchronous mode
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*/
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spiStop(driver);
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spicfg.end_cb = endOfSpiCommunication;
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spiStart(driver, &spicfg);
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state = READY_TO_INTEGRATE;
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}
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static THD_WORKING_AREA(hipTreadStack, UTILITY_THREAD_STACK_SIZE);
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static msg_t hipThread(void *arg) {
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chRegSetThreadName("hip9011 init");
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while (true) {
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// 100 ms to let the hardware to start
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chThdSleepMilliseconds(100);
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if (needToInit) {
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hipStartupCode();
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needToInit = false;
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}
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}
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return -1;
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}
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void initHip9011(Logging *sharedLogger) {
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addConsoleAction("hipinfo", showHipInfo);
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if (!boardConfiguration->isHip9011Enabled)
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return;
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logger = sharedLogger;
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// todo: apply new properties on the fly
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prepareHip9011RpmLookup(
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engineConfiguration->knockDetectionWindowEnd - engineConfiguration->knockDetectionWindowStart);
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// todo: configurable
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// driver = getSpiDevice(boardConfiguration->hip9011SpiDevice);
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spicfg.ssport = getHwPort(boardConfiguration->hip9011CsPin);
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spicfg.sspad = getHwPin(boardConfiguration->hip9011CsPin);
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outputPinRegisterExt2("hip int/hold", &intHold, boardConfiguration->hip9011IntHoldPin, &DEFAULT_OUTPUT);
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outputPinRegisterExt2("hip CS", &hipCs, boardConfiguration->hip9011CsPin, &DEFAULT_OUTPUT);
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scheduleMsg(logger, "Starting HIP9011/TPIC8101 driver");
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spiStart(driver, &spicfg);
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bandIndex = getHip9011BandIndex(engineConfiguration->cylinderBore);
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/**
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* this engine cycle callback would be scheduling actual integration start and end callbacks
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*/
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addTriggerEventListener(&intHoldCallback, "DD int/hold", engine);
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// MISO PB14
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// palSetPadMode(GPIOB, 14, PAL_MODE_ALTERNATE(EFI_SPI2_AF) | PAL_STM32_PUDR_PULLUP);
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// MOSI PB15
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// palSetPadMode(GPIOB, 15, PAL_MODE_ALTERNATE(EFI_SPI2_AF) | PAL_STM32_OTYPE_OPENDRAIN);
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addConsoleActionF("set_gain", setGain);
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chThdCreateStatic(hipTreadStack, sizeof(hipTreadStack), NORMALPRIO, (tfunc_t) hipThread, NULL);
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}
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#endif
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