myeongha_code

lcdController.c

+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <wiringPi.h>
+#include <wiringPiI2C.h>
+#include <wiringPi.h>
+#include <stdbool.h>
+
+#define I2C_ADDR   0x27 // LCD 주소
+
+#define LCD_CHR  1 // Mode - Sending data
+#define LCD_CMD  0 // Mode - Sending command
+
+#define LINE1  0x80 // 첫번째 줄
+#define LINE2  0xC0 // 두번째 줄
+
+#define LCD_BACKLIGHT   0x08  // On
+// LCD_BACKLIGHT = 0x00  # Off
+
+#define ENABLE  0b00000100 // Enable bit
+
+
+#define MSG_SIZE 1024
+
+#define IN 0
+#define OUT 1
+#define PWM 0
+
+#define LOW 0
+#define HIGH 1
+#define VALUE_MAX 256
+#define DIRECTION_MAX 256
+
+
+
+void lcd_init(void);
+void lcd_byte(int bits, int mode);
+void lcd_toggle_enable(int bits);
+void lcdLoc(int line); //move cursor
+void ClrLcd(void); // clr LCD return home
+void typeln(const char *s);
+int fd;  // seen by all subroutines
+
+char msg[MSG_SIZE] = {0};
+char tempMsg[MSG_SIZE] = {0};
+static int PWMExport(int pwmnum) {
+#define BUFFER_MAX 3
+  char buffer[BUFFER_MAX];
+  int fd, byte;
+
+  fd = open("/sys/class/pwm/pwmchip0/export", O_WRONLY);
+  if (-1 == fd) {
+    fprintf(stderr, "Failed to open export for export!\n");
+    return (-1);
+  }
+
+  byte = snprintf(buffer, BUFFER_MAX, "%d", pwmnum);
+  write(fd, buffer, byte);
+  close(fd);
+
+  sleep(1);
+
+  return (0);
+}
+
+static int PWMEnable(int pwmnum) {
+  static const char s_enable_str[] = "1";
+
+  char path[DIRECTION_MAX];
+  int fd;
+
+  snprintf(path, DIRECTION_MAX, "/sys/class/pwm/pwmchip0/pwm0/enable", pwmnum);
+  fd = open(path, O_WRONLY);
+  if (-1 == fd) {
+    fprintf(stderr, "Failed to open in enable!\n");
+    return -1;
+  }
+
+  write(fd, s_enable_str, strlen(s_enable_str));
+  close(fd);
+
+  return (0);
+}
+
+static int PWMWritePeriod(int pwmnum, int value) {
+  char s_value_str[VALUE_MAX];
+  char path[VALUE_MAX];
+  int fd, byte;
+
+  snprintf(path, VALUE_MAX, "/sys/class/pwm/pwmchip0/pwm0/period", pwmnum);
+  fd = open(path, O_WRONLY);
+  if (-1 == fd) {
+    fprintf(stderr, "Failed to open in period!\n");
+    return (-1);
+  }
+  byte = snprintf(s_value_str, VALUE_MAX, "%d", value);
+
+  if (-1 == write(fd, s_value_str, byte)) {
+    fprintf(stderr, "Failed to write value in period!\n");
+    close(fd);
+    return -1;
+  }
+  close(fd);
+
+  return (0);
+}
+
+static int PWMWriteDutyCycle(int pwmnum, int value) {
+  char s_value_str[VALUE_MAX];
+  char path[VALUE_MAX];
+  int fd, byte;
+
+  snprintf(path, VALUE_MAX, "/sys/class/pwm/pwmchip0/pwm0/duty_cycle", pwmnum);
+  fd = open(path, O_WRONLY);
+  if (-1 == fd) {
+    fprintf(stderr, "Failed to open in duty cycle!\n");
+    return (-1);
+  }
+  byte = snprintf(s_value_str, VALUE_MAX, "%d", value);
+
+  if (-1 == write(fd, s_value_str, byte)) {
+    fprintf(stderr, "Failed to write value in duty cycle!\n");
+    close(fd);
+    return -1;
+  }
+  close(fd);
+
+  return (0);
+}
+
+void error_handling(char *message) {
+  fputs(message, stderr);
+  fputc('\n', stderr);
+  exit(1);
+}
+
+//lcd thread
+void* lcd( void *data ) {
+
+
+    int str_len = 0;
+
+    int sock = *((int*)data);
+
+    bool isS = true;
+
+    if (wiringPiSetup () == -1) exit (1);
+
+    fd = wiringPiI2CSetup(I2C_ADDR);
+
+    lcd_init(); // setup LCD
+
+    char* sleepMode1 = "Sleep Mode On";
+    char* sleepMode2 = "Go to dreamland";
+    char* wakeUpMode1 = "Wake up !!!";
+    char* wakeUpMode2 = "Out of dreamland";
+    char* motion1 = "Motion Count";
+    char motion2[100] = "Total : ";
+
+
+    while(1){
+
+
+      if(strcmp("s", msg) == 0 && isS){ // 수면모드 on
+        printf("수면모드 on\n");
+        ClrLcd();
+        lcdLoc(LINE1);
+        typeln(sleepMode1);
+        lcdLoc(LINE2);
+        typeln(sleepMode2);
+        isS = false;
+      }
+      if(strcmp("e", msg) == 0){ // 수면 모드 off
+        printf("수면모드 off\n");
+        ClrLcd();
+        lcdLoc(LINE1);
+        typeln(wakeUpMode1);
+        lcdLoc(LINE2);
+        typeln(wakeUpMode2);
+
+        // motion number display
+
+        str_len = read(sock, msg, sizeof(msg)); // 다시 서버로부터 메세지 기다림
+
+        if (str_len == -1) error_handling("read() error");
+        if(str_len == 0) break;
+        printf("motion num: %s\n", msg);
+        strcat(motion2, msg);
+        ClrLcd();
+        lcdLoc(LINE1);
+        typeln(motion1);
+        lcdLoc(LINE2);
+        typeln(motion2);
+        delay(7000);
+        ClrLcd();
+        PWMWriteDutyCycle(PWM, 0);
+        break;
+      }
+    }
+
+  
+}
+
+//led thread
+void* led( void *data ) {
+
+    int sock = *((int*)data);
+    int str_len = 0;
+    int rsCount = 0;
+    bool isRs1 = true;
+    bool isRs2 = true;
+    bool isS = true;
+    bool isRe = true;
+
+
+    while (1) {
+
+      if(strcmp("rs1", msg) == 0 && isRs1){ // 첫번째 rs
+        printf("첫번째 rs1\n");
+        PWMWriteDutyCycle(PWM, 4500000);
+        isRs1 = false;
+      }else if(strcmp("rs2", msg) == 0 && isRs2){ // 두번째 rs
+        printf("두번째 rs2\n");
+        PWMWriteDutyCycle(PWM, 1000000);
+        isRs2 = false;
+      }
+
+      if(strcmp("s", msg) == 0 && isS){ //수면모드
+        printf("수면모드\n");
+        PWMWriteDutyCycle(PWM, 0);
+        isS = false;
+      }
+
+      if(strcmp("re", msg) == 0 && isRe){ //기상 준비
+        printf("기상준비\n");
+
+        for (int i = 0; i < 10000; i++) { // 3초동안 불서서히 켜짐
+          PWMWriteDutyCycle(PWM, i * 1000);
+          usleep(300);
+        }
+        isRe = false;
+      }
+
+      if(strcmp("e", msg) == 0){ // 종료
+        PWMWriteDutyCycle(PWM, 10000000);
+        printf("기상\n");
+        break;
+      }
+       
+    }
+
+
+
+    
+}
+
+int main(int argc, char *argv[]) {
+    pthread_t p_thread[2];
+    int thr_id;
+    int status;
+    int sock;
+    struct sockaddr_in serv_addr;
+    int str_len;
+
+
+    PWMExport(PWM);
+    PWMWritePeriod(PWM, 10000000);
+    PWMWriteDutyCycle(PWM, 10000000);
+    PWMEnable(PWM);
+    if (argc != 3) {
+        printf("Usage : %s <IP> <port>\n", argv[0]);
+        exit(1);
+    }
+
+    // sockt create
+    sock = socket(PF_INET, SOCK_STREAM, 0);
+    if (sock == -1) error_handling("socket() error");
+
+    // config server info
+    memset(&serv_addr, 0, sizeof(serv_addr));
+    serv_addr.sin_family = AF_INET;
+    serv_addr.sin_addr.s_addr = inet_addr(argv[1]);
+    serv_addr.sin_port = htons(atoi(argv[2]));
+
+    // connect request to server
+    if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
+        error_handling("connect() error");
+
+    printf("서버와 연결\n");
+
+
+    //각 기능에 맞게 스레드 형성
+    thr_id = pthread_create(&p_thread[0], NULL, led, (void *)&sock);
+    if (thr_id < 0) {
+        perror("thread create error : ");
+        exit(0);
+    }
+    thr_id = pthread_create(&p_thread[1], NULL, lcd, (void *)&sock);
+    if (thr_id < 0) {
+        perror("thread create error : ");
+        exit(0);
+    }
+
+    memset(tempMsg, 0, sizeof(tempMsg));
+    memset(msg, 0, sizeof(msg));
+    while(1){
+      str_len = read(sock, tempMsg, sizeof(tempMsg));
+      printf("tempMsg: %s\n", tempMsg);
+      strcpy(msg, tempMsg);
+      if (str_len == -1) error_handling("read() error");
+      if(str_len == 0) break; // 서버가 닫히면 클라이언트도 종료
+      if(strcmp("e", msg) == 0) break;
+    }
+
+    pthread_join(p_thread[0], (void **)&status);
+    pthread_join(p_thread[1], (void **)&status);
+ 
+
+    close(sock);
+    return 0;
+}
+
+// clr lcd go home loc 0x80
+void ClrLcd(void)   {
+  lcd_byte(0x01, LCD_CMD);
+  lcd_byte(0x02, LCD_CMD);
+}
+
+// go to location on LCD
+void lcdLoc(int line)   {
+  lcd_byte(line, LCD_CMD);
+}
+
+// this allows use of any size string
+void typeln(const char *s)   {
+
+  while ( *s ) lcd_byte(*(s++), LCD_CHR);
+
+}
+
+void lcd_byte(int bits, int mode)   {
+
+  //Send byte to data pins
+  // bits = the data
+  // mode = 1 for data, 0 for command
+  int bits_high;
+  int bits_low;
+  // uses the two half byte writes to LCD
+  bits_high = mode | (bits & 0xF0) | LCD_BACKLIGHT ;
+  bits_low = mode | ((bits << 4) & 0xF0) | LCD_BACKLIGHT ;
+
+  // High bits
+  wiringPiI2CReadReg8(fd, bits_high);
+  lcd_toggle_enable(bits_high);
+
+  // Low bits
+  wiringPiI2CReadReg8(fd, bits_low);
+  lcd_toggle_enable(bits_low);
+}
+
+void lcd_toggle_enable(int bits)   {
+  // Toggle enable pin on LCD display
+  delayMicroseconds(500);
+  wiringPiI2CReadReg8(fd, (bits | ENABLE));
+  delayMicroseconds(500);
+  wiringPiI2CReadReg8(fd, (bits & ~ENABLE));
+  delayMicroseconds(500);
+}
+
+
+void lcd_init()   {
+  // Initialise display
+  lcd_byte(0x33, LCD_CMD); // Initialise
+  lcd_byte(0x32, LCD_CMD); // Initialise
+  lcd_byte(0x06, LCD_CMD); // Cursor move direction
+  lcd_byte(0x0C, LCD_CMD); // 0x0F On, Blink Off
+  lcd_byte(0x28, LCD_CMD); // Data length, number of lines, font size
+  lcd_byte(0x01, LCD_CMD); // Clear display
+  delayMicroseconds(500);
+}
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