111 lines
4.0 KiB
C
111 lines
4.0 KiB
C
/*
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* Battery Protection Software for BPS PCB Development
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* Originally Written for BPS_V1 2012
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*
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* Modified for BPS_V2 2015 by Scott Haver
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* WMU Sunseeker 2015
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*
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* I/O Initialization
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*/
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// Include files
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#include "SunseekerTelemetry2021.h"
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/*
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* Initialise I/O port directions and states
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* Drive unused pins as outputs to avoid floating inputs
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*
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*/
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void io_init( void )
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{
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/******************************PORT 1**************************************/
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P1OUT = 0x00; // Pull pins low
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P1DIR = P1_UNUSED; //set to output
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P1DIR &= ~(RTC_MFP | IMU_INTn); //set to input
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/*Interrupts Enable*/
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// P1SEL = RTC_MFP | IMU_INTn;
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// P1IE = RTC_MFP | IMU_INTn; // Enable Interrupts
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P1IES = IMU_INTn; //high to low
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P1IFG = 0x00; //Clears all interrupt flags on Port 1
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delay();
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/******************************PORT 2**************************************/
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P2OUT = 0x00; // Pull pins low
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P2DIR = P2_UNUSED; //set to output
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/*Interrupts Enable */
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// P2SEL = CAN0_INTn | CAN1_INTn | GPS_INTn; //Interrupts Select
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// P2IES = CAN0_INTn | CAN1_INTn | GPS_INTn;
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// P2IE = CAN0_INTn | CAN1_INTn | GPS_INTn; // Enable Interrupts
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// P2SEL |= CAN0_RXB0n | CAN0_RXB1n | CAN1_RXB0n | CAN1_RXB1n; //Interrupts Select
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// P2IES |= CAN0_RXB0n | CAN0_RXB1n | CAN1_RXB0n | CAN1_RXB1n;
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// P2IE |= CAN0_RXB0n | CAN0_RXB1n | CAN1_RXB0n | CAN1_RXB1n; // Enable Interrupts
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P2IFG = 0x00; //Clears all interrupt flags on Port 2
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delay();
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/******************************PORT 3**************************************/
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P3OUT = 0x00; // Pull pins low
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P3DIR = CAN0_SCLK | CAN0_MOSI | SDC_SCLK | SDC_SIMO | CAN1_SCLK | P3_UNUSED;
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P3OUT |= CAN0_SCLK | CAN0_MOSI | SDC_SCLK | SDC_SIMO | CAN1_SCLK;
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P3DIR &= ~(CAN0_MISO | SDC_SOMI);
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P3SEL = CAN0_SCLK | CAN0_MOSI | CAN0_MISO | SDC_SCLK | SDC_SIMO | SDC_SOMI | CAN1_SCLK | IMU_SDA;
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/******************************PORT 4**************************************/
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P4OUT = 0x00; // Pull pins low
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P4DIR = CAN0_RSTn | CAN0_CSn | CAN1_RSTn | CAN1_CSn | P4_UNUSED;
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P4OUT = CAN0_RSTn | CAN0_CSn | CAN1_RSTn | CAN1_CSn;
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delay();
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P4OUT &= ~(CAN0_RSTn | CAN1_RSTn) ;
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delay();
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delay();
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P4OUT |= (CAN0_RSTn | CAN1_RSTn) ;
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/******************************PORT 5**************************************/
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P5OUT = 0x00; // Pull pins low
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P5DIR = XT2OUT | CAN1_MOSI | P5_UNUSED;
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P5OUT = CAN1_MOSI;
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P5DIR &= ~(CAN1_MISO);
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P5SEL = XT2IN | XT2OUT | IMU_SCL | CAN1_MOSI | CAN1_MISO;
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/******************************PORT 6**************************************/
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P6OUT = 0x00; // Pull pins low
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P6DIR = P6_UNUSED;
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P6SEL = 0x00;
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/******************************PORT 7**************************************/
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P7OUT = 0x00; // Pull pins low
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P7DIR = XT1OUT | P7_UNUSED;
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P7SEL = XT1IN | XT1OUT;
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/******************************PORT 8**************************************/
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P8OUT = 0x00; // Pull pins low
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P8DIR = LEDG | LEDR | LEDY0 | LEDY1 | P8_UNUSED;
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P8DIR &= ~(Button0);
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P8SEL = 0x00;
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/******************************PORT 9**************************************/
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P9OUT = 0x00; // Pull pins low
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P9DIR = USB_TX | SDC_CSn | GPS_CSn | P9_UNUSED;
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P9OUT = SDC_CSn | GPS_CSn;
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P9SEL = RTC_SDA | RTC_SCL | USB_TX | USB_RX;
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/******************************PORT 10**************************************/
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P10OUT = 0x00; // Pull pins low
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P10DIR = BT_CSn | BT_MOSI | BT_SCLK | UART_TX | BT_EN |P10_UNUSED;
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P10OUT = BT_CSn | BT_MOSI | BT_SCLK;
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P10SEL = BT_MOSI | BT_MISO | BT_SCLK | UART_TX | UART_RX;
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/******************************PORT 11**************************************/
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P11OUT = 0x00; // Pull pins low
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P11DIR = ACLK_TEST | MCLK_TEST | SMCLK_TEST;
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P11OUT = ACLK_TEST | MCLK_TEST | SMCLK_TEST;
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P11SEL = ACLK_TEST | MCLK_TEST | SMCLK_TEST;
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/******************************PORT J**************************************/
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PJOUT = 0x00;
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PJDIR = 0x0F; //set to output as per user's guide
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}
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