92 lines
8.3 KiB
C
92 lines
8.3 KiB
C
#include "io_init.h"
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void io_init(void)
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{
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/****************************** PORT 1 **************************************/
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P1OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P1DIR = P1_UNUSED; // Set all unused pins to output
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P1DIR &= ~(RTC_MFP | IMU_INTn); // Set specific pins to input
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/*Interrupts Enable*/
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// P1SEL = RTC_MFP | IMU_INTn; // Peripheral module function selected for specific pins
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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; // Clear all interrupt flags on Port 1
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delay();
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/****************************** PORT 2 **************************************/
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P2OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P2DIR = P2_UNUSED; // Set all unused pins to output
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/*Interrupts Enable */
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// P2SEL = CAN0_INTn | CAN1_INTn | GPS_INTn; // Peripheral module function selected for specific pins
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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; // Peripheral module function selected for specific pins
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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; // Clear all interrupt flags on Port 2
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delay();
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/****************************** PORT 3 **************************************/
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P3OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P3DIR = CAN0_SCLK | CAN0_MOSI | SDC_SCLK | SDC_MOSI | CAN1_SCLK | P3_UNUSED; // Set to output
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P3OUT |= CAN0_SCLK | CAN0_MOSI | SDC_SCLK | SDC_MOSI | CAN1_SCLK; // Pull used output pins high
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P3DIR &= ~(CAN0_MISO | SDC_MISO); // Set specific pins to input
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P3SEL = CAN0_SCLK | CAN0_MOSI | CAN0_MISO | SDC_SCLK | SDC_MOSI | SDC_MISO | CAN1_SCLK | IMU_SDA;
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/****************************** PORT 4 **************************************/
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P4OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P4DIR = CAN0_RSTn | CAN0_CSn | CAN1_RSTn | CAN1_CSn | P4_UNUSED; // Set specific pins to output
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P4OUT = CAN0_RSTn | CAN0_CSn | CAN1_RSTn | CAN1_CSn; // Pull used output pins high
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delay();
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P4OUT &= ~(CAN0_RSTn | CAN1_RSTn); // Set specific pins of output register to low
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delay();
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delay();
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P4OUT |= (CAN0_RSTn | CAN1_RSTn); // Set specific pins of output register to high
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/****************************** PORT 5 **************************************/
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P5OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P5DIR = XT2OUT | CAN1_MOSI | P5_UNUSED; // Set specific pins to output
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P5OUT = CAN1_MOSI; // Set specific pins of output register to high
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P5DIR &= ~(CAN1_MISO); // Set specific pins to input
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P5SEL = XT2IN | XT2OUT | IMU_SCL | CAN1_MOSI | CAN1_MISO; // Peripheral module function selected for specific pins
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/****************************** PORT 6 **************************************/
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P6OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P6DIR = P6_UNUSED; // Set all unused pins to output
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P6SEL = 0x00; // I/O function selected for all pins
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/****************************** PORT 7 **************************************/
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P7OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P7DIR = XT1OUT | P7_UNUSED; // Set specific pins to output
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P7SEL = XT1IN | XT1OUT; // Peripheral module function selected for specific pins
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/****************************** PORT 8 **************************************/
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P8OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P8DIR = LEDG | LEDR | LEDY0 | LEDY1 | P8_UNUSED; // Set specific pins to output
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P8DIR &= ~(Button0); // Set to input
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P8SEL = 0x00; // I/O function selected for all pins
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/****************************** PORT 9 **************************************/
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P9OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P9DIR = USB_TX | SDC_CSn | GPS_CSn | P9_UNUSED; // Set specific pins to output
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P9OUT = SDC_CSn | GPS_CSn; // Set specific pins of output register to high
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P9SEL = RTC_SDA | RTC_SCL | USB_TX | USB_RX; // Peripheral module function selected for specific pins
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/****************************** PORT 10 **************************************/
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P10OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P10DIR = BT_CSn | BT_MOSI | BT_SCLK | UART_TX | BT_EN |P10_UNUSED; // Set specific pins to output
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P10OUT = BT_CSn | BT_MOSI | BT_SCLK; // Set specific pins of output register to high
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P10SEL = BT_MOSI | BT_MISO | BT_SCLK | UART_TX | UART_RX; // Peripheral module function selected for specific pins
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/****************************** PORT 11 **************************************/
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P11OUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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P11DIR = ACLK_TEST | MCLK_TEST | SMCLK_TEST; // Set specific pins to output
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P11OUT = ACLK_TEST | MCLK_TEST | SMCLK_TEST; // Set specific pins of output register to high
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P11SEL = ACLK_TEST | MCLK_TEST | SMCLK_TEST; // Peripheral module function selected for specific pins
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/****************************** PORT J **************************************/
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PJOUT = 0x00; // Set output register to all low. Pulling enabled pins low, only affects ports set as output, no effect on inputs
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PJDIR = 0x0F; // Set to output as per user's guide
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}
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