83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
#include "acc_mc33810.h"
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#include "globals.h"
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#include <SPI.h>
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uint8_t MC33810_BIT_INJ1 = 1;
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uint8_t MC33810_BIT_INJ2 = 2;
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uint8_t MC33810_BIT_INJ3 = 3;
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uint8_t MC33810_BIT_INJ4 = 4;
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uint8_t MC33810_BIT_INJ5 = 5;
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uint8_t MC33810_BIT_INJ6 = 6;
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uint8_t MC33810_BIT_INJ7 = 7;
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uint8_t MC33810_BIT_INJ8 = 8;
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uint8_t MC33810_BIT_IGN1 = 1;
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uint8_t MC33810_BIT_IGN2 = 2;
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uint8_t MC33810_BIT_IGN3 = 3;
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uint8_t MC33810_BIT_IGN4 = 4;
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uint8_t MC33810_BIT_IGN5 = 5;
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uint8_t MC33810_BIT_IGN6 = 6;
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uint8_t MC33810_BIT_IGN7 = 7;
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uint8_t MC33810_BIT_IGN8 = 8;
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volatile PORT_TYPE *mc33810_1_pin_port;
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volatile PINMASK_TYPE mc33810_1_pin_mask;
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volatile PORT_TYPE *mc33810_2_pin_port;
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volatile PINMASK_TYPE mc33810_2_pin_mask;
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void initMC33810(void)
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{
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//Set pin port/masks
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mc33810_1_pin_port = portOutputRegister(digitalPinToPort(pinMC33810_1_CS));
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mc33810_1_pin_mask = digitalPinToBitMask(pinMC33810_1_CS);
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mc33810_2_pin_port = portOutputRegister(digitalPinToPort(pinMC33810_2_CS));
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mc33810_2_pin_mask = digitalPinToBitMask(pinMC33810_2_CS);
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//Set the output states of both ICs to be off to fuel and ignition
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mc33810_1_requestedState = 0;
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mc33810_2_requestedState = 0;
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mc33810_1_returnState = 0;
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mc33810_2_returnState = 0;
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pinMode(pinMC33810_1_CS, OUTPUT);
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pinMode(pinMC33810_2_CS, OUTPUT);
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SPI.begin();
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//These are the SPI settings per the datasheet
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SPI.beginTransaction(SPISettings(6000000, MSBFIRST, SPI_MODE0));
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//Set the ignition outputs to GPGD mode
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/*
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0001 = Mode select command
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1111 = Set all 1 GD[0...3] outputs to use GPGD mode
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00000000 = All remaining values are unused (For us)
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*/
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//uint16_t cmd = 0b000111110000;
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uint16_t cmd = 0b0001111100000000;
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//IC1
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MC33810_1_ACTIVE();
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SPI.transfer16(cmd);
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MC33810_1_INACTIVE();
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//IC2
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MC33810_2_ACTIVE();
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SPI.transfer16(cmd);
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MC33810_2_INACTIVE();
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//Disable the Open Load pull-down current sync (See page 31 of MC33810 DS)
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/*
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0010 = LSD Fault Command
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1000 = LSD Fault operation is Shutdown (Default)
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1111 = Open load detection fault when active (Default)
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0000 = Disable open load detection when off (Changed from 1111 to 0000)
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*/
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cmd = 0b0010100011110000;
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//IC1
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MC33810_1_ACTIVE();
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SPI.transfer16(cmd);
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MC33810_1_INACTIVE();
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//IC2
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MC33810_2_ACTIVE();
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SPI.transfer16(cmd);
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MC33810_2_INACTIVE();
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} |