107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
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/*
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* gpio.c
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*
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* Created on: 29.08.2016
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* Author: wn
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*/
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#include <msp430g2553.h>
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#include <stdint.h>
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#define GPIO_C
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#include "gpio.h"
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#undef GPIO_C
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extern tPinCfg pinCfg[];
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void gpioInitPins() {
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P1OUT = 0;
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P1DIR = 0;
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P1REN = 0;
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P2OUT = 0;
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P2DIR = 0;
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P2REN = 0;
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for (tPin p = PINS_FIRST; p < PINS_END; p += 1) {
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tPinCfg pin = pinCfg[p];
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if (pin.portId == PORT1) {
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if (pin.direction == PIN_OUT) {
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P1DIR |= pin.bit;
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P1SEL &= ~pin.bit;
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P1SEL2 &= ~pin.bit;
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gpioSetPin(p, pin.defaultOut);
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} else if (pin.direction == PIN_IN) {
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P1DIR &= ~pin.bit;
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P1SEL &= ~pin.bit;
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P1SEL2 &= ~pin.bit;
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P1REN &= ~pin.bit;
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} else if (pin.direction == PIN_IN_PULLUP) {
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P1DIR &= ~pin.bit;
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P1SEL &= ~pin.bit;
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P1SEL2 &= ~pin.bit;
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P1REN |= pin.bit;
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P1OUT |= pin.bit;
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}
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} else if (pin.portId == PORT2) {
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if (pin.direction == PIN_OUT) {
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P2DIR |= pin.bit;
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P2SEL &= ~pin.bit;
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P2SEL2 &= ~pin.bit;
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gpioSetPin(p, pin.defaultOut);
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} else if (pin.direction == PIN_IN) {
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P2DIR &= ~pin.bit;
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P2SEL &= ~pin.bit;
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P2SEL2 &= ~pin.bit;
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P2REN &= ~pin.bit;
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} else if (pin.direction == PIN_IN_PULLUP) {
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P2DIR &= ~pin.bit;
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P2SEL &= ~pin.bit;
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P2SEL2 &= ~pin.bit;
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P2REN |= pin.bit;
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P2OUT |= pin.bit;
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}
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}
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}
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}
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void gpioSetPin(tPin p, tPinState v) {
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tPinCfg pin = pinCfg[p];
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if (v == HIGH) {
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if (pin.portId == PORT1) {
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P1OUT |= pin.bit;
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} else if (pin.portId == PORT2) {
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P2OUT |= pin.bit;
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}
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} else {
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if (pin.portId == PORT1) {
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P1OUT &= ~pin.bit;
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} else if (pin.portId == PORT2) {
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P2OUT &= ~pin.bit;
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}
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}
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}
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void gpioTogglePin(tPin p) {
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tPinCfg pin = pinCfg[p];
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if (pin.portId == PORT1) {
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P1OUT ^= pin.bit;
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} else if (pin.portId == PORT2) {
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P2OUT ^= pin.bit;
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}
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}
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tPinState gpioGetPin(tPin p) {
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tPinCfg pin = pinCfg[p];
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uint16_t pinValue = 0;
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if (pin.portId == PORT1) {
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pinValue = P1IN;
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} else if (pin.portId == PORT2) {
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pinValue = P2IN;
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}
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return (pinValue & pin.bit) ? HIGH : LOW;
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}
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