main.c
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/*
* ============ Platform Configuration ============
*/
#include <msp430.h>
#define LED_ON() (P1OUT |= BIT6)
#define LED_OFF() (P1OUT &= ~BIT6)
#define LED_READ() (P1OUT & BIT6)
#define LED_TOGGLE() (P1OUT ^= BIT6)
#define CONNECTED_LED_ON() (P1OUT |= BIT0)
#define CONNECTED_LED_OFF() (P1OUT &= ~BIT0)
#define EAP_RX_BUF UCA0RXBUF
#define EAP_TX_BUF UCA0TXBUF
#define EAP_RX_VECTOR USCIAB0RX_VECTOR
#define EAP_TX_VECTOR PORT2_VECTOR
#define EAP_RX_ACK_CONFIG() (P2DIR |= BIT0)
#define EAP_RX_ACK_SET() (P2OUT |= BIT0)
#define EAP_RX_ACK_CLR() (P2OUT &= ~BIT0)
#define EAP_TX_INT_CONFIG() (P2DIR &= ~BIT1, P2IES |= BIT1, P2IFG &= BIT1, P2IE |= BIT1)
#define EAP_TX_INT_TST() (P2IFG & BIT1)
#define EAP_TX_INT_CLR() (P2IFG &= ~BIT1)
void init(void) {
WDTCTL = WDTPW + WDTHOLD;
BCSCTL2 = SELM_0 + DIVM_0 + DIVS_0;
if (CALBC1_1MHZ != 0xFF) {
DCOCTL = 0x00;
BCSCTL1 = CALBC1_1MHZ; /* Set DCO to 1MHz */
DCOCTL = CALDCO_1MHZ;
}
BCSCTL1 |= XT2OFF + DIVA_0;
BCSCTL3 = XT2S_0 + LFXT1S_2 + XCAP_1;
P1DIR |= BIT0; /* LED */
LED_OFF();
P1DIR |= BIT6; /* CONNECTED_LED */
CONNECTED_LED_OFF();
UCA0CTL1 |= UCSWRST;
P1SEL |= BIT1 + BIT2;
P1SEL2 |= BIT1 + BIT2;
EAP_RX_ACK_CONFIG();
EAP_RX_ACK_SET();
EAP_TX_INT_CONFIG();
UCA0CTL1 = UCSSEL_2 + UCSWRST;
UCA0MCTL = UCBRF_0 + UCBRS_6;
UCA0BR0 = 8;
UCA0CTL1 &= ~UCSWRST;
IFG2 &= ~(UCA0RXIFG);
IE2 |= UCA0RXIE;
TA1CCTL0 = CM_0 + CCIS_0 + OUTMOD_0 + CCIE;
TA1CCR0 = 1200;
TA1CTL = TASSEL_1 + ID_0 + MC_1;
__enable_interrupt();
}
/*
* ============ Serial Driver ============
*/
#include <Em_Message.h>
__attribute__((interrupt(EAP_RX_VECTOR)))
static void rxHandler(void) {
uint8_t b = EAP_RX_BUF;
if (Em_Message_addByte(b)) {
Em_Message_dispatch();
}
EAP_RX_ACK_CLR();
EAP_RX_ACK_SET();
}
__attribute__((interrupt(EAP_TX_VECTOR)))
static void txHandler(void) {
if (EAP_TX_INT_TST()) {
uint8_t b;
if (Em_Message_getByte(&b)) {
EAP_TX_BUF = b;
}
EAP_TX_INT_CLR();
}
}
void Em_Message_startSend() {
uint8_t b;
if (Em_Message_getByte(&b)) {
UCA0TXBUF = b;
}
}
uint8_t Em_Message_lock() {
uint8_t key;
asm ("MOV r2, %0": "=r" (key));
key &= 0x8;
asm ("DINT");
return key;
}
void Em_Message_unlock(uint8_t key) {
if (key) {
asm ("EINT");
}
else {
asm ("DINT");
}
}
/*
* ============ Application Program ============
*/
#include <Blinker.h>
#define COUNT_DEFAULT 5
volatile Blinker_cmd_t cmdRes = Blinker_STOP_CMD;
volatile Blinker_count_t countRes = COUNT_DEFAULT;
volatile Blinker_delay_t delayRes = Blinker_delay_min;
volatile Blinker_count_t curCount;
volatile Blinker_delay_t curTime;
__attribute__((interrupt(TIMER1_A0_VECTOR)))
void tickHandler(void) {
if (cmdRes == Blinker_STOP_CMD) {
return;
}
if (curTime < delayRes) {
curTime += Blinker_delay_step;
return;
}
else {
curTime = 0;
}
if (curCount-- > 0) {
LED_TOGGLE();
}
else {
cmdRes = Blinker_STOP_CMD;
LED_OFF();
}
Blinker_ledState_indicate();
}
int main(int argc, char *argv[]) {
volatile int dummy = 0;
init();
Blinker_run();
while (dummy == 0) {
/* idle */
}
return 0;
}
void Blinker_connectHandler(void) {
CONNECTED_LED_ON();
}
void Blinker_disconnectHandler(void) {
CONNECTED_LED_OFF();
}
void Blinker_cmd_store(Blinker_cmd_t* input) {
cmdRes = *input;
switch (cmdRes) {
case Blinker_START_CMD:
curCount = countRes * 2;
curTime = 0;
break;
case Blinker_STOP_CMD:
LED_OFF();
break;
}
}
void Blinker_count_fetch(Blinker_count_t* output) {
*output = countRes;
}
void Blinker_count_store(Blinker_count_t* input) {
countRes = *input;
}
void Blinker_delay_fetch(Blinker_delay_t* output) {
*output = delayRes;
}
void Blinker_delay_store(Blinker_delay_t* input) {
delayRes = *input;
}
void Blinker_ledState_fetch(Blinker_ledState_t* output) {
*output = LED_READ() ? Blinker_LED_ON : Blinker_LED_OFF;
}