/*
===============================================================================
Name : main.c
Author : $(author)
Version : 0.8
Copyright : (copyright)
Description : main definition
===============================================================================
*/
#include "LPC8xx.h"
#include "lpc8xx_uart.h"
extern volatile uint32_t UARTRxCount; //UART受信カウント変数
extern volatile uint8_t UARTRxBuffer[BUFSIZE]; //UART受信データ変数
volatile uint8_t gps_data; //GPS入力データ
volatile uint8_t gprmc[12]; //GPS日時データ
volatile uint8_t doy[3]; //day of year
volatile uint8_t msec; //ミリsec
volatile uint32_t msTicks = 0;
volatile uint8_t uruu;
void SysTick_Handler(void) {
msTicks++;
}
void systick_delay (uint32_t delayTicks) {
uint32_t currentTicks = msTicks;
while ((msTicks - currentTicks) < delayTicks);
}
void SwitchMatrix_Init()
{
/* Enable SWM clock */
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<7);
/* Pin Assign 8 bit Configuration */
/* U0_RXD */
LPC_SWM->PINASSIGN0 = 0xffff03ffUL;
/* Pin Assign 1 bit Configuration */
/* RESET */
LPC_SWM->PINENABLE0 = 0xffffffbfUL;
}
void OUT_ON(void){
// LPC_GPIO_PORT->SET0 = 1 << 2; // PIO0_2 H
LPC_GPIO_PORT->CLR0 = 1 << 2; // PIO0_2 L
}
void OUT_OFF(void){
// LPC_GPIO_PORT->CLR0 = 1 << 2; // PIO0_2 L
LPC_GPIO_PORT->SET0 = 1 << 2; // PIO0_2 H
}
void GPS_IN(void){
while(UARTRxCount == 0){
}
LPC_USART0->INTENCLR = RXRDY; /* Disable RXRDY */
UARTRxCount = 0;
gps_data = UARTRxBuffer[0];
LPC_USART0->INTENSET = RXRDY; /* Re-enable RXRDY */
}
void GPS_TIMING(void){
l1:
GPS_IN();
if(gps_data != '$'){
goto l1;
}
GPS_IN();
if(gps_data != 'G'){
goto l1;
}
GPS_IN();
if(gps_data != 'P'){
goto l1;
}
GPS_IN();
if(gps_data != 'R'){
goto l1;
}
GPS_IN();
if(gps_data != 'M'){
goto l1;
}
GPS_IN();
if(gps_data != 'C'){
goto l1;
}
}
void GPS_WAIT(void){
int32_t lp1;
for(lp1 = 0 ; lp1 < 65 ; lp1++){
GPS_IN();
}
}
void WWVB_0(void){
GPS_TIMING();
GPS_WAIT();
OUT_OFF();
systick_delay(200);
OUT_ON();
}
void WWVB_1(void){
GPS_TIMING();
GPS_WAIT();
OUT_OFF();
systick_delay(500);
OUT_ON();
}
void WWVB_P(void){
GPS_TIMING();
GPS_WAIT();
OUT_OFF();
systick_delay(800);
OUT_ON();
}
void WWVB_P2(void){
OUT_OFF();
systick_delay(800);
OUT_ON();
}
void WWVB_PL(uint8_t d1,uint8_t b1){
if((d1 & b1) == 0){
WWVB_0();
}
else
{
WWVB_1();
}
}
void WWVB_OUT(void){
WWVB_P2(); //00:P0
WWVB_PL(gprmc[2],4); //01:MIN 40
WWVB_PL(gprmc[2],2); //02:MIN 20
WWVB_PL(gprmc[2],1); //03:MIN 10
WWVB_0(); //04
WWVB_PL(gprmc[3],8); //05:MIN 8
WWVB_PL(gprmc[3],4); //06:MIN 4
WWVB_PL(gprmc[3],2); //07:MIN 2
WWVB_PL(gprmc[3],1); //08:MIN 1
WWVB_P(); //09:P1
WWVB_0(); //10
WWVB_0(); //11
WWVB_PL(gprmc[0],2); //12:HOUR 20
WWVB_PL(gprmc[0],1); //13:HOUR 10
WWVB_0(); //14
WWVB_PL(gprmc[1],8); //15:HOUR 8
WWVB_PL(gprmc[1],4); //16:HOUR 4
WWVB_PL(gprmc[1],2); //17:HOUR 2
WWVB_PL(gprmc[1],1); //18:HOUR 1
WWVB_P(); //19:P2
WWVB_0(); //20
WWVB_0(); //21
WWVB_PL(doy[0],2); //22:DAY OF YEAR 200
WWVB_PL(doy[0],1); //23:DAY OF YEAR 100
WWVB_0(); //24
WWVB_PL(doy[1],8); //25:DAY OF YEAR 80
WWVB_PL(doy[1],4); //26:DAY OF YEAR 40
WWVB_PL(doy[1],2); //27:DAY OF YEAR 20
WWVB_PL(doy[1],1); //28:DAY OF YEAR 10
WWVB_P(); //29:P3
WWVB_PL(doy[2],8); //30:DAY OF YEAR 8
WWVB_PL(doy[2],4); //31:DAY OF YEAR 4
WWVB_PL(doy[2],2); //32:DAY OF YEAR 2
WWVB_PL(doy[2],1); //33:DAY OF YEAR 1
WWVB_0(); //34
WWVB_0(); //35
WWVB_1(); //36:UT! ADD
WWVB_0(); //37:UT1 SUB
WWVB_1(); //38:UT1 ADD
WWVB_P(); //39:P4
WWVB_PL(msec,8); //40:UT1 0.8
WWVB_PL(msec,4); //41:UT1 0.4
WWVB_PL(msec,2); //42:UT1 0.2
WWVB_PL(msec,1); //43:UT1 0.1
WWVB_0(); //44
WWVB_PL(gprmc[10],8); //45:YEAR 80
WWVB_PL(gprmc[10],4); //46:YEAR 40
WWVB_PL(gprmc[10],2); //47:YEAR 20
WWVB_PL(gprmc[10],1); //48:YEAR 10
WWVB_P(); //49:P5
WWVB_PL(gprmc[11],8); //50:YEAR 8
WWVB_PL(gprmc[11],4); //51:YEAR 4
WWVB_PL(gprmc[11],2); //52:YEAR 2
WWVB_PL(gprmc[11],1); //53:YEAR 1
WWVB_0(); //54:
WWVB_PL(uruu,1); //55:LEAP YEAR
WWVB_0(); //56:LEAP SECOND
WWVB_0(); //57:DAYLIGHT SAVING
WWVB_0(); //58:DAYLIGHT SAVING
WWVB_P(); //59:P0
}
int main(void) {
int32_t loop1,day_of_year = 0;
uint8_t day,month,year,hour,doy_add;
SystemCoreClockUpdate();
SysTick_Config(SystemCoreClock / 1000);
UARTInit(LPC_USART0, 9600); //UART初期化9600BPS
SwitchMatrix_Init(); //スイッチマトリッｸｽ設定
LPC_GPIO_PORT->DIR0 |= (1 << 2); //PIO0_2 を出力ポートに設定
OUT_ON(); //OUT_ON
/*-------------- MAIN LOOP ----------------------*/
while(1) {
l2:
GPS_TIMING();
GPS_IN();
for(loop1 = 0 ; loop1 < 6 ; loop1++){
GPS_IN();
gprmc[loop1] = gps_data - 0x30;
}
GPS_IN();
GPS_IN();
msec = gps_data -0x30;
for(loop1 = 0 ; loop1 < 42 ; loop1++){
GPS_IN();
}
for(loop1 = 6 ; loop1 < 12 ; loop1++){
GPS_IN();
gprmc[loop1] = gps_data - 0x30;
}
if(gprmc[10] == 0){
goto l2;
}
if(gprmc[4] != 0){
goto l2;
}
if(gprmc[5] != 0){
goto l2;
}
month = gprmc[8] * 10 + gprmc[9];
year = gprmc[10] * 10 + gprmc[11];
hour = gprmc[0] * 10 + gprmc[1];
hour = hour + 14;
if(hour > 23){
hour = hour - 24;
doy_add = 1;
}
else
{
doy_add = 0;
}
day = gprmc[6] * 10 + gprmc[7] + doy_add;
if((year & 3) == 0){
uruu = 1;
}
else
{
uruu = 0;
}
if(month == 1){
day_of_year = day;
}
if(month == 2){
day_of_year = 31 + day;
}
if(month == 3){
day_of_year = 59 +day + uruu;
}
if(month == 4){
day_of_year = 90 + day + uruu;
}
if(month == 5){
day_of_year = 120 + day + uruu;
}
if(month == 6){
day_of_year = 151 + day + uruu;
}
if(month == 7){
day_of_year = 181 + day + uruu;
}
if(month == 8){
day_of_year = 212 + day + uruu;
}
if(month == 9){
day_of_year = 243 + day + uruu;
}
if(month == 10){
day_of_year = 273 + day + uruu;
}
if(month == 11){
day_of_year = 304 + day + uruu;
}
if(month == 12){
day_of_year = 334 + day + uruu;
}
if((day_of_year - uruu) > 365){
year = year + 1;
if((year & 3) == 0){
uruu = 1;
}
else
{
uruu = 0;
}
day_of_year = 1;
}
doy[0] = day_of_year / 100;
doy[1] = day_of_year / 10 - (doy[0] * 10);
doy[2] = day_of_year - (doy[0] * 100) - (doy[1] * 10);
gprmc[10] = year / 10;
gprmc[11] = year - (gprmc[10] * 10);
gprmc[0] = hour / 10;
gprmc[1] = hour - (gprmc[0] * 10);
WWVB_OUT();
}
/*-----------------------------------------------*/
}
