mirror of https://github.com/rusefi/rusefi.git
133 lines
2.8 KiB
C++
133 lines
2.8 KiB
C++
/**
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* @file HIP9011.c
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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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* 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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#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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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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// 0b01110001
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#define HIP_ADVANCED_MODE 0x71
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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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// tx_buff[0] = 0b11100001;
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tx_buff[0] = HIP_ADVANCED_MODE;
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tx_buff[4] = 0xF8; // 0b11111000;
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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, 8, 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 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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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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}
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#endif
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