mirror of https://github.com/rusefi/rusefi-1.git
324 lines
8.2 KiB
C++
324 lines
8.2 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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* 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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* SPI frequency: 5MHz max
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*
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* @date Nov 27, 2013
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* @author Andrey Belomutskiy, (c) 2012-2014
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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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#if EFI_HIP_9011 || defined(__DOXYGEN__)
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#define HIP_DEBUG FALSE
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extern pin_output_mode_e DEFAULT_OUTPUT;
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static int bandIndex;
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static int intergratorIndex = -1;
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static bool_t isHip9011Busy = false;
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static scheduling_s startTimer[2];
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static scheduling_s endTimer[2];
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// 0b01000000
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#define SET_PRESCALER_CMD 0x40
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// 0b11100000
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#define SET_CHANNEL_CMD 0xE0
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// 0b00000000
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#define SET_BAND_PASS_CMD 0x0
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// 0b10000000
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#define SET_GAIN_CMD 0x80
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// 0b01110001
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#define SET_ADVANCED_MODE 0x71
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static Logging logger;
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#if HIP_DEBUG
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static THD_WORKING_AREA(htThreadStack, UTILITY_THREAD_STACK_SIZE);
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#endif
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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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#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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// todo: make this configurable
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static SPIDriver *driver = &SPID2;
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static msg_t ivThread(int param) {
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chRegSetThreadName("HIP");
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while (true) {
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chThdSleepMilliseconds(10);
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// scheduleMsg(&logger, "poking HIP=%d", counter++);
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spiSelect(driver);
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// // '0' for 4MHz
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// tx_buff[0] = SET_PRESCALER_CMD + 0 + 2;
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// spiExchange(driver, 1, tx_buff, rx_buff);
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//
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// // '0' for channel #1
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// tx_buff[0] = SET_CHANNEL_CMD + 0;
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// spiExchange(driver, 1, tx_buff, rx_buff);
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//
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// // band index depends on cylinder bore
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// tx_buff[0] = SET_BAND_PASS_CMD + bandIndex;
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// spiExchange(driver, 1, tx_buff, rx_buff);
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//
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// // todo
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// tx_buff[0] = SET_GAIN_CMD + 41;
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// spiExchange(driver, 1, tx_buff, rx_buff);
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//
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// tx_buff[0] = SET_ADVANCED_MODE;
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// spiExchange(driver, 1, tx_buff, rx_buff);
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// BAND_PASS_CMD
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tx_buff[0] = 0x0 | (40 & 0x3F);
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spiExchange(driver, 1, tx_buff, rx_buff);
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// Set the gain 0b10000000
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tx_buff[0] = 0x80 | (49 & 0x3F);
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spiExchange(driver, 1, tx_buff, rx_buff);
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// Set the integration time constant 0b11000000
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tx_buff[0] = 0xC0 | (31 & 0x1F);
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spiExchange(driver, 1, tx_buff, rx_buff);
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// SET_ADVANCED_MODE 0b01110001
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tx_buff[0] = 0x71;
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spiExchange(driver, 1, tx_buff, rx_buff);
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spiUnselect(driver);
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}
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#if defined __GNUC__
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return 0;
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#endif
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}
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EXTERN_ENGINE
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;
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#define INT_TIME_COUNT 32
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/**
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* These are HIP9011 magic values - integrator time constants in uS
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*/
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static const int integratorValues[INT_TIME_COUNT] = { 40, 45, 50, 55, 60, 65,
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70, 75, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200, 220, 240,
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260, 280, 300, 320, 360, 400, 440, 480, 520, 560, 600 };
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#define BAND_LOOKUP_SIZE 64
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static const float bandFreqLookup[BAND_LOOKUP_SIZE] = { 1.22, 1.26, 1.31, 1.35,
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1.4, 1.45, 1.51, 1.57, 1.63, 1.71, 1.78, 1.87, 1.96, 2.07, 2.18, 2.31,
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2.46, 2.54, 2.62, 2.71, 2.81, 2.92, 3.03, 3.15, 3.28, 3.43, 3.59, 3.76,
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3.95, 4.16, 4.39, 4.66, 4.95, 5.12, 5.29, 5.48, 5.68, 5.9, 6.12, 6.37,
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6.64, 6.94, 7.27, 7.63, 8.02, 8.46, 8.95, 9.5, 10.12, 10.46, 10.83,
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11.22, 11.65, 12.1, 12.6, 13.14, 13.72, 14.36, 15.07, 15.84, 16.71,
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17.67, 18.76, 19.98 };
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#define PIF 3.14159f
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static float rpmLookup[INT_TIME_COUNT];
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/**
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* 'TC is typically TINT/(2*Pi*VOUT)'
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* Knock Sensor Training TPIC8101, page 24
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*
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* We know the set of possible integration times, we know the knock detection window width
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*
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* 2.2 volts should
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*
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*/
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#define DESIRED_OUTPUT_VALUE 5.0f
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static void prepareRpmLookup(engine_configuration_s *engineConfiguration) {
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for (int i = 0; i < INT_TIME_COUNT; i++) {
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float windowWidthMult = (engineConfiguration->knockDetectionWindowEnd
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- engineConfiguration->knockDetectionWindowStart) / 360.0f;
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// '60000000' because revolutions per MINUTE in uS conversion
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rpmLookup[i] = 60000000.0f
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/ (integratorValues[i] * 2 * PIF * DESIRED_OUTPUT_VALUE
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* windowWidthMult);
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}
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}
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#define BAND(bore) (900 / (PIF * (bore) / 2))
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#define INTEGRATOR_INDEX findIndex(rpmLookup, INT_TIME_COUNT, engine->rpmCalculator.rpmValue)
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static void showHipInfo(void) {
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printSpiState(&logger, boardConfiguration);
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scheduleMsg(&logger, "bore=%f freq=%f", engineConfiguration->cylinderBore,
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BAND(engineConfiguration->cylinderBore));
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scheduleMsg(&logger, "band index=%d", bandIndex);
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scheduleMsg(&logger, "integrator index=%d", INTEGRATOR_INDEX);
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scheduleMsg(&logger, "spi= int=%s CS=%s",
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hwPortname(boardConfiguration->hip9011IntHoldPin),
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hwPortname(boardConfiguration->hip9011CsPin));
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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_11;
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boardConfiguration->hip9011IntHoldPin = GPIOB_11;
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boardConfiguration->is_enabled_spi_2 = true;
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}
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static void startIntegration(void) {
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if(isHip9011Busy)
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return;
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turnPinHigh(HIP9011_INT_HOLD);
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}
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static void endIntegration(void) {
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turnPinLow(HIP9011_INT_HOLD);
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/**
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* SPI communication is only allowed while not integrading, so we initiate the exchange
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* once we are done inregratng
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*/
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isHip9011Busy = true;
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int newValue = INTEGRATOR_INDEX;
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if (newValue != intergratorIndex) {
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intergratorIndex = newValue;
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// todo: send new value, be sure to use non-synchnonious approach!
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}
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// todo: move this into the end callback
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isHip9011Busy = false;
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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,
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uint32_t index DECLARE_ENGINE_PARAMETER_S) {
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// this callback is invoked on interrupt thread
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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],
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engineConfiguration->knockDetectionWindowStart,
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(schfunc_t) &startIntegration, NULL);
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scheduleByAngle(rpm, &endTimer[structIndex],
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engineConfiguration->knockDetectionWindowEnd,
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(schfunc_t) &endIntegration,
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NULL);
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}
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void initHip9011(void) {
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if (!boardConfiguration->isHip9011Enabled)
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return;
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initLogging(&logger, "HIP driver");
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// driver = getSpiDevice(boardConfiguration->digitalPotentiometerSpiDevice);
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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", HIP9011_INT_HOLD,
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boardConfiguration->hip9011IntHoldPin, &DEFAULT_OUTPUT);
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outputPinRegisterExt2("hip CS", SPI_CS_HIP9011,
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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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/**
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* Here we initialize the chip in synchronous mode
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*/
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#if HIP_DEBUG
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chThdCreateStatic(htThreadStack, sizeof(htThreadStack), NORMALPRIO,
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(tfunc_t) ivThread, NULL);
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#else
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/**
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* for runtime we are re-starting SPI in non-synchronous mode
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*/
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spiStop(driver);
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// todo spicfg.end_cb = spiEndCallback;
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spiStart(driver, &spicfg);
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#endif
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bandIndex = findIndex(bandFreqLookup, BAND_LOOKUP_SIZE,
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BAND(engineConfiguration->cylinderBore));
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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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addConsoleAction("hipinfo", showHipInfo);
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}
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#endif
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