+++ /dev/null
-/*
- * ============ Hardware Abstraction Layer for MSP-EXP430G2 LaunchPad ============
- */
-
-#include "Hal.h"
-#include "Em_Message.h"
-
-#include <msp430.h>
-
-
-/* -------- INTERNAL FEATURES -------- */
-
-#define GREEN_LED_CONFIG() (P1DIR |= BIT6)
-#define GREEN_LED_ON() (P1OUT |= BIT6)
-#define GREEN_LED_OFF() (P1OUT &= ~BIT6)
-#define GREEN_LED_READ() (P1OUT & BIT6)
-#define GREEN_LED_TOGGLE() (P1OUT ^= BIT6)
-
-#define RED_LED_CONFIG() (P1DIR |= BIT0)
-#define RED_LED_ON() (P1OUT |= BIT0)
-#define RED_LED_OFF() (P1OUT &= ~BIT0)
-#define RED_LED_READ() (P1OUT & BIT0)
-#define RED_LED_TOGGLE() (P1OUT ^= BIT0)
-
-#define GPIO_CONFIG(mask) (P1DIR &= ~mask, P1REN |= mask, P1OUT |= mask, P1IES |= mask);
-#define GPIO_ENABLE(mask) (P1IFG &= ~mask, P1IE |= mask)
-#define GPIO_DISABLE(mask) (P1IE &= ~mask, P1IFG &= ~mask)
-#define GPIO_FIRED(mask) (P1IFG & mask)
-#define GPIO_LOW(mask) (!(P1IN & mask))
-#define GPIO_DEBOUNCE_MSECS 100
-
-#define DEBUG1_CONFIG() (P2DIR |= BIT3)
-#define DEBUG1_ON() (P2OUT |= BIT3)
-#define DEBUG1_OFF() (P2OUT &= ~BIT3)
-
-#define DEBUG2_CONFIG() (P2DIR |= BIT4)
-#define DEBUG2_ON() (P2OUT |= BIT4)
-#define DEBUG2_OFF() (P2OUT &= ~BIT4)
-
-#define EAP_RX_BUF UCA0RXBUF
-#define EAP_TX_BUF UCA0TXBUF
-
-#define EAP_RX_VECTOR USCIAB0RX_VECTOR
-#define EAP_TX_VECTOR USCIAB0TX_VECTOR
-#define EAP_TX_ACK_VECTOR PORT2_VECTOR
-
-#define EAP_RX_ENABLE() (P1SEL |= BIT1, P1SEL2 |= BIT1)
-#define EAP_RX_DISABLE() (P1SEL &= ~BIT1, P1SEL2 &= ~BIT1)
-#define EAP_TX_ENABLE() (P1SEL |= BIT2, P1SEL2 |= BIT2)
-#define EAP_TX_DISABLE() (P1SEL &= ~BIT2, P1SEL2 &= ~BIT2)
-
-#define EAP_RX_ACK_CONFIG() (P2DIR |= BIT0)
-#define EAP_RX_ACK_SET() (P2OUT |= BIT0)
-#define EAP_RX_ACK_CLR() (P2OUT &= ~BIT0)
-
-#define EAP_TX_ACK_CONFIG() (P2DIR &= ~BIT1, P2IES |= BIT1, P2IFG &= ~BIT1, P2IE |= BIT1)
-#define EAP_TX_ACK_TST() (P2IFG & BIT1)
-#define EAP_TX_ACK_CLR() (P2IFG &= ~BIT1)
-
-#define EAP_RX_INT_CLR() (IFG2 &= ~UCA0RXIFG)
-#define EAP_RX_INT_ENABLE() (IE2 |= UCA0RXIE)
-#define EAP_TX_INT_CLR() (IFG2 &= ~UCA0TXIFG)
-#define EAP_TX_INT_DISABLE() (IE2 &= ~UCA0TXIE)
-#define EAP_TX_INT_ENABLE() (IE2 |= UCA0TXIE)
-
-#define MCLK_TICKS_PER_MS 1000L
-#define ACLK_TICKS_PER_SECOND 1500L /* was 12000L with divider /1 */
-#define UART_WATCHDOG_PERIOD (ACLK_TICKS_PER_SECOND * 250) / 1000
-
-#define UART_WATCH_DISABLE() (TA1CCTL1 = 0) // Turn off CCR1 Interrupt
-#define UART_WATCH_ENABLE() (TA1CCR1 = TA1R + UART_WATCHDOG_PERIOD, TA1CCTL1 = CCIE) // Set CCR1, and Enable CCR1 Interrupt
-
-#ifdef __GNUC__
-#define DINT() __disable_interrupt()
-#define EINT() __enable_interrupt()
-#define INTERRUPT
-#define SLEEP() _BIS_SR(LPM3_bits + GIE)
-#define WAKEUP() _BIC_SR_IRQ(LPM3_bits)
-#endif
-
-#ifdef __TI_COMPILER_VERSION__
-#define DINT() (_disable_interrupt())
-#define EINT() (_enable_interrupt())
-#define INTERRUPT interrupt
-#define SLEEP() (__bis_SR_register(LPM3_bits + GIE))
-#define WAKEUP() (__bic_SR_register_on_exit(LPM3_bits))
-#endif
-
-#define NUM_HANDLERS 5
-
-#define EVENT3_HANDLER_ID 0
-#define EVENT4_HANDLER_ID 1
-#define EVENT5_HANDLER_ID 2
-#define TICK_HANDLER_ID 3
-#define DISPATCH_HANDLER_ID 4
-
-static void gpioHandler(uint8_t id);
-static void postEvent(uint8_t handlerId);
-
-static Hal_Handler appGpioHandler;
-static volatile uint16_t handlerEvents = 0;
-static uint16_t clockTick = 0;
-static Hal_Handler handlerTab[NUM_HANDLERS];
-
-
-/* -------- APP-HAL INTERFACE -------- */
-
-void Hal_gpioEnable(Hal_Handler handler) {
- uint8_t id;
- uint16_t mask;
-
- for (id = 0, mask = BIT3; id < 3; id++, mask <<= 1) {
- handlerTab[id] = gpioHandler;
- appGpioHandler = handler;
- (P1DIR &= ~mask, P1REN |= mask, P1OUT |= mask, P1IES |= mask);
- Hal_delay(100);
- (P1IFG &= ~mask, P1IE |= mask);
- }
-}
-
-void Hal_connected(void) {
-}
-
-void Hal_debugOn(uint8_t line) {
- switch (line) {
- case 1:
- DEBUG1_ON();
- break;
- case 2:
- DEBUG2_ON();
- }
-}
-
-void Hal_debugOff(uint8_t line) {
- switch (line) {
- case 1:
- DEBUG1_OFF();
- break;
- case 2:
- DEBUG2_OFF();
- }
-}
-
-void Hal_debugPulse(uint8_t line) {
- switch (line) {
- case 1:
- DEBUG1_ON();
- DEBUG1_OFF();
- break;
- case 2:
- DEBUG2_ON();
- DEBUG2_OFF();
- }
-}
-
-void Hal_delay(uint16_t msecs) {
- while (msecs--) {
- __delay_cycles(MCLK_TICKS_PER_MS);
- }
-}
-
-void Hal_disconnected(void) {
-}
-
-void Hal_init(void) {
-
- /* setup clocks */
-
- WDTCTL = WDTPW + WDTHOLD;
- /* MCLK = DCOCLK */
- /* MCLK divider = /1 */
- /* SMCLK divider = /1 */
- BCSCTL2 = SELM_0 + DIVM_0 + DIVS_0;
- if (CALBC1_1MHZ != 0xFF) {
- DCOCTL = 0x00;
- BCSCTL1 = CALBC1_1MHZ; /* Set DCO to 1MHz */
- DCOCTL = CALDCO_1MHZ;
- }
- /* XT2 is off (Not used for MCLK/SMCLK) */
- /* ACLK divider = /8 */
- BCSCTL1 |= XT2OFF + DIVA_3;
- /* XT2 range = 0.4 - 1 MHz */
- /* LFXT1 range/VLO = VLOCLK (or 3-16 MHz if XTS=1) */
- /* Capacitor 6 pF */
- BCSCTL3 = XT2S_0 + LFXT1S_2 + XCAP_1;
-
- /* setup LEDs */
-
- GREEN_LED_CONFIG();
- GREEN_LED_OFF();
- RED_LED_CONFIG();
- RED_LED_OFF();
-
- /* setup debug pins */
-
- DEBUG1_CONFIG(); DEBUG1_OFF();
- DEBUG2_CONFIG(); DEBUG2_OFF();
-
- DEBUG1_ON(); DEBUG1_OFF();
-
- /* setup TimerA1 */
- TA1CTL = TASSEL_1 + MC_2; // ACLK, Continuous mode
- UART_WATCH_DISABLE();
-
- /* setup UART */
-
- UCA0CTL1 |= UCSWRST;
-
- EAP_RX_ENABLE();
- EAP_TX_ENABLE();
-
- EAP_RX_ACK_CONFIG();
- EAP_RX_ACK_SET();
-
- EAP_TX_ACK_CONFIG();
-
- // suspend the MCM
- EAP_RX_ACK_CLR();
-
- UCA0CTL1 = UCSSEL_2 + UCSWRST;
- UCA0MCTL = UCBRF_0 + UCBRS_6;
- UCA0BR0 = 8;
- UCA0CTL1 &= ~UCSWRST;
-
- handlerTab[DISPATCH_HANDLER_ID] = Em_Message_dispatch;
-}
-
-void Hal_idleLoop(void) {
-
- EINT();
- for (;;) {
-
- // atomically read/clear all handlerEvents
- DINT();
- uint16_t events = handlerEvents;
- handlerEvents = 0;
-
- if (events) { // dispatch all current events
- EINT();
- uint16_t mask;
- uint8_t id;
- for (id = 0, mask = 0x1; id < NUM_HANDLERS; id++, mask <<= 1) {
- if ((events & mask) && handlerTab[id]) {
- handlerTab[id](id);
- }
- }
- }
- else { // await more events
- SLEEP();
- }
- }
-}
-
-void Hal_greenLedOn(void) {
- GREEN_LED_ON();
-}
-
-void Hal_greenLedOff(void) {
- GREEN_LED_OFF();
-}
-
-bool Hal_greenLedRead(void) {
- return GREEN_LED_READ();
-}
-
-void Hal_greenLedToggle(void) {
- GREEN_LED_TOGGLE();
-}
-
-void Hal_redLedOn(void) {
- RED_LED_ON();
-}
-
-void Hal_redLedOff(void) {
- RED_LED_OFF();
-}
-
-bool Hal_redLedRead(void) {
- return RED_LED_READ();
-}
-
-void Hal_redLedToggle(void) {
- RED_LED_TOGGLE();
-}
-
-void Hal_tickStart(uint16_t msecs, Hal_Handler handler) {
- handlerTab[TICK_HANDLER_ID] = handler;
- clockTick = (ACLK_TICKS_PER_SECOND * msecs) / 1000;
- TA1CCR0 = TA1R + clockTick; // Set the CCR0 interrupt for msecs from now.
- TA1CCTL0 = CCIE; // Enable the CCR0 interrupt
-}
-
-void Hal_tickStop(void) {
- handlerTab[TICK_HANDLER_ID] = 0;
- TA1CCR0 = 0;
- TA1CCTL0 = 0;
-}
-
-/* -------- SRT-HAL INTERFACE -------- */
-
-uint8_t Em_Hal_lock(void) {
- uint8_t key = _get_interrupt_state();
- #ifdef __GNUC__
- __disable_interrupt();
- #endif
- #ifdef __TI_COMPILER_VERSION__
- _disable_interrupt();
- #endif
- return key;
-}
-
-void Em_Hal_reset(void) {
- uint8_t key = Em_Hal_lock();
- EAP_RX_ACK_CLR(); // suspend the MCM
- Hal_delay(100);
- EAP_RX_ACK_SET(); // reset the MCM
- Hal_delay(500);
- EAP_RX_INT_CLR();
- EAP_TX_INT_CLR();
- EAP_TX_ACK_CLR();
- EAP_RX_INT_ENABLE();
- Em_Hal_unlock(key);
-}
-
-void Em_Hal_startSend() {
- EAP_TX_BUF = Em_Message_startTx();
-}
-
-void Em_Hal_unlock(uint8_t key) {
- _set_interrupt_state(key);
-}
-
-void Em_Hal_watchOff(void) {
- UART_WATCH_DISABLE();
-}
-
-void Em_Hal_watchOn(void) {
- UART_WATCH_ENABLE();
-}
-
-
-/* -------- INTERNAL FUNCTIONS -------- */
-
-static void gpioHandler(uint8_t id) {
- uint16_t mask = BIT3 << id;
-
- Hal_delay(GPIO_DEBOUNCE_MSECS);
- if (GPIO_LOW(mask) && appGpioHandler)
- appGpioHandler(id);
- GPIO_ENABLE(mask);
-}
-
-static void postEvent(uint8_t handlerId) {
- uint8_t key = Em_Hal_lock();
- handlerEvents |= 1 << handlerId;
- Em_Hal_unlock(key);
-}
-
-/* -------- INTERRUPT SERVICE ROUTINES -------- */
-
-#ifdef __GNUC__
- __attribute__((interrupt(PORT1_VECTOR)))
-#endif
-#ifdef __TI_COMPILER_VERSION__
- #pragma vector=PORT1_VECTOR
-#endif
-INTERRUPT void gpioIsr(void) {
- uint8_t id;
- uint16_t mask;
-
- for (id = 0, mask = BIT3; id < 3; id++, mask <<= 1)
- if (GPIO_FIRED(mask)) {
- postEvent(id);
- GPIO_DISABLE(mask);
- }
- WAKEUP();
-}
-
-#ifdef __GNUC__
- __attribute__((interrupt(EAP_RX_VECTOR)))
-#endif
-#ifdef __TI_COMPILER_VERSION__
- #pragma vector=EAP_RX_VECTOR
-#endif
-INTERRUPT void rxIsr(void) {
- uint8_t b = EAP_RX_BUF;
- Em_Message_startRx();
- EAP_RX_ACK_CLR();
- EAP_RX_ACK_SET();
- if (Em_Message_addByte(b)) {
- postEvent(DISPATCH_HANDLER_ID);
- }
- WAKEUP();
-}
-
-#ifdef __GNUC__
- __attribute__((interrupt(TIMER1_A0_VECTOR)))
-#endif
-#ifdef __TI_COMPILER_VERSION__
- #pragma vector=TIMER1_A0_VECTOR
-#endif
-INTERRUPT void timerIsr(void) {
- TA1CCR0 += clockTick;
- postEvent(TICK_HANDLER_ID);
- WAKEUP();
-}
-
-#ifdef __GNUC__
- __attribute__((interrupt(EAP_TX_ACK_VECTOR)))
-#endif
-#ifdef __TI_COMPILER_VERSION__
- #pragma vector=EAP_TX_ACK_VECTOR
-#endif
-INTERRUPT void txAckIsr(void) {
- if (EAP_TX_ACK_TST()) {
- uint8_t b;
- if (Em_Message_getByte(&b)) {
- EAP_TX_BUF = b;
- }
- EAP_TX_ACK_CLR();
- }
- WAKEUP();
-}
-
-#ifdef __GNUC__
- __attribute__((interrupt(TIMER1_A1_VECTOR)))
-#endif
-#ifdef __TI_COMPILER_VERSION__
- #pragma vector=TIMER1_A1_VECTOR
-#endif
-INTERRUPT void uartWatchdogIsr(void) {
- switch (TA1IV) {
- case 2: // CCR1
- UART_WATCH_DISABLE();
- Em_Message_restart();
- WAKEUP();
- break;
- }
-}
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