185 lines
4.4 KiB
C++
185 lines
4.4 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/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
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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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#if EFI_HIP_9011
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#define HIP9011_CS_PORT GPIOE
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#define HIP9011_CS_PIN 11
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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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// 0b01110001
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//#define HIP_ADVANCED_MODE 0x71
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static Logging logger;
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static THD_WORKING_AREA(htThreadStack, UTILITY_THREAD_STACK_SIZE);
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static int callbackc = 0;
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static void spiCallback(SPIDriver *spip) {
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spiUnselectI(spip);
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scheduleMsg(&logger, "spiCallback HIP=%d", callbackc++);
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}
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// SPI_CR1_BR_1 // 5MHz
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static const SPIConfig spicfg = { spiCallback,
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/* HW dependent part.*/
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HIP9011_CS_PORT,
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HIP9011_CS_PIN,
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//SPI_CR1_MSTR |
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//SPI_CR1_BR_1 // 5MHz
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SPI_CR1_BR_0 | SPI_CR1_BR_1 | SPI_CR1_BR_2 };
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static unsigned char tx_buff[8];
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static unsigned char rx_buff[8];
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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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int counter = 0;
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// 4MHz
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tx_buff[0] = SET_PRESCALER_CMD;
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// channel #1
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tx_buff[4] = SET_CHANNEL_CMD;
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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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spiStartExchange(driver, 2, 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, 70, 75, 80, 90, 100, 110, 120, 130, 140,
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150, 160, 180, 200, 220, 240, 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, 1.4, 1.45, 1.51, 1.57,
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1.63, 1.71, 1.78, 1.87, 1.96, 2.07, 2.18, 2.31, 2.46, 2.54, 2.62, 2.71, 2.81, 2.92, 3.03,
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3.15, 3.28, 3.43, 3.59, 3.76, 3.95, 4.16 , 4.39, 4.66, 4.95, 5.12, 5.29, 5.48, 5.68, 5.9,
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6.12, 6.37, 6.64, 6.94, 7.27, 7.63, 8.02, 8.46, 8.95, 9.5, 10.12, 10.46, 10.83, 11.22, 11.65,
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12.1, 12.6, 13.14, 13.72, 14.36, 15.07, 15.84, 16.71, 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 2.2f
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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 / (integratorValues[i] * 2 * PIF * DESIRED_OUTPUT_VALUE * windowWidthMult);
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}
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}
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#define BAND(bore) (900 / (PIF * (bore) / 2))
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static int bandIndex;
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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, BAND(engineConfiguration->cylinderBore));
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scheduleMsg(&logger, "band index=%d", bandIndex);
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scheduleMsg(&logger, "spi= CS=%s", 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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* ChipSelect is hard-wired
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*/
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boardConfiguration->isHip9011Enabled = true;
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//boardConfiguration->hip9011CsPin =
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boardConfiguration->hip9011IntHoldPin = GPIOB_11;
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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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print("Starting HIP9011/TPIC8101 driver\r\n");
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spiStart(driver, &spicfg);
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// chThdCreateStatic(htThreadStack, sizeof(htThreadStack), NORMALPRIO, (tfunc_t) ivThread, NULL);
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bandIndex = findIndex(bandFreqLookup, BAND_LOOKUP_SIZE, BAND(engineConfiguration->cylinderBore));
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addConsoleAction("hipinfo", showHipInfo);
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}
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#endif
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