From 2dcf20ecf2e7bf3a6f6006a41186ef60946a81c7 Mon Sep 17 00:00:00 2001
From: lhamel <lila.hamel@polytech-lille.net>
Date: Tue, 5 May 2020 17:50:38 +0200
Subject: [PATCH] first program withour button control

---
 Makefile         |  12 ++++++++++++
 arduino          | Bin 0 -> 12652 bytes
 arduino.c        | 150 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 arduino.h        |  26 ++++++++++++++++++++++++++
 arduino.o        | Bin 0 -> 3660 bytes
 main.c           |  37 +++++++++++++++++++++++++++++++++++++
 main.o           | Bin 0 -> 1408 bytes
 virtual_serial.c |  69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 virtual_serial.h |   9 +++++++++
 virtual_serial.o | Bin 0 -> 1892 bytes
 10 files changed, 303 insertions(+), 0 deletions(-)
 create mode 100644 Makefile
 create mode 100755 arduino
 create mode 100644 arduino.c
 create mode 100644 arduino.h
 create mode 100644 arduino.o
 create mode 100644 main.c
 create mode 100644 main.o
 create mode 100644 virtual_serial.c
 create mode 100644 virtual_serial.h
 create mode 100644 virtual_serial.o

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..f843fa4
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,12 @@
+SOURCES = $(wildcard *.c)
+OBJETS = $(SOURCES:.c=.o)
+EXECUTABLE = arduino
+LDLIBS += -lutil
+CFLAGS += -Wall
+
+all: $(EXECUTABLE)
+
+$(EXECUTABLE): $(OBJETS)
+
+clean:
+	rm -rf $(EXECUTABLE) *.o
diff --git a/arduino b/arduino
new file mode 100755
index 0000000..b65d5df
Binary files /dev/null and b/arduino differ
diff --git a/arduino.c b/arduino.c
new file mode 100644
index 0000000..46505f1
--- /dev/null
+++ b/arduino.c
@@ -0,0 +1,150 @@
+/*
+ * Very basic emulation of an Arduino UNO with some buttons and some LEDs
+ */
+
+////
+// Include files
+////
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/poll.h>
+#include <sys/time.h>
+
+#include "virtual_serial.h"
+#include "arduino.h"
+
+////
+// Constants
+////
+#define		SERIAL_SPEED		9600
+#define		SLEEP_DELAY		100
+
+#define		MAX_NAME		1024
+#define		MAX_LINE		1024
+#define		MAX_SERIAL		1024
+
+////
+// Global variables
+////
+
+////
+// Utility functions
+////
+
+static unsigned char ledstates[LEDS_NB];
+void led(int num,unsigned char state){
+if(num>=0 && num<LEDS_NB) ledstates[num]=state;
+int i;
+printf("   LEDs: ");
+for(i=0;i<LEDS_NB;i++) printf("[%c] ",ledstates[i]?'X':' ');
+printf("\r");
+fflush(stdout);
+}
+
+static unsigned char outbuf[MAX_SERIAL];
+int outsize=0;
+void serialSend(unsigned char *data,int size){
+if(size+outsize<MAX_SERIAL){
+  memcpy(outbuf+outsize,data,size);
+  }
+}
+
+static unsigned char butstates[BUTTONS_NB];
+static void _button(int num,unsigned char state){
+if(num>=0 && num<BUTTONS_NB) butstates[num]=state;
+int i;
+printf("Buttons: ");
+for(i=0;i<BUTTONS_NB;i++) printf("[%c] ",(butstates[i]?'A':'a')+i);
+printf("\n");
+}
+
+unsigned char button(int num){
+if(num>=0 && num<BUTTONS_NB) return butstates[num];
+return 255;
+}
+
+long millis(void){
+struct timeval tv;
+gettimeofday(&tv,NULL);
+return tv.tv_sec*1000+tv.tv_usec/1000;
+}
+
+////
+// Events function
+////
+
+static void handleEvents(int sd){
+struct pollfd fds[2];
+char line[MAX_LINE];
+unsigned char packet[MAX_SERIAL];
+int ret;
+// my variables 
+
+//
+fds[0].fd=STDIN_FILENO;
+fds[0].events=POLLIN;
+fds[1].fd=sd;
+fds[1].events=POLLIN;
+
+while(1){
+  loop();
+  ret=poll(fds,2,SLEEP_DELAY);
+  if(ret==-1){ perror("poll"); exit(EXIT_FAILURE); }
+  if(fds[0].revents&POLLIN){
+    if(fgets(line,MAX_LINE,stdin)==NULL){ perror("fgets"); exit(EXIT_FAILURE); } 
+#ifdef DEBUG
+    printf("keyboard: %s",line);
+#endif
+    int i;
+    for(i=0;i<strlen(line);i++){
+      if(line[i]>='a' && line[i]<='d') _button(line[i]-'a',0);
+      if(line[i]>='A' && line[i]<='D') _button(line[i]-'A',1);
+      }
+    }
+  if(fds[1].revents&POLLIN){
+    int nb;
+    if((nb=read(sd,packet,MAX_SERIAL))<=0) break;
+#ifdef DEBUG
+    printf("serial in: ");
+#endif
+    int i;
+    for(i=0;i<nb;i++){
+#ifdef DEBUG
+      printf("%02x ",packet[i]);
+#endif
+      serialInHandler(packet[i]);
+      }
+#ifdef DEBUG
+    printf("\n");
+#endif
+    }
+  if(outsize>0){
+    if(write(sd,outbuf,outsize)!=outsize) break;
+#ifdef DEBUG
+    printf("serial out: ");
+    int i;
+    for(i=0;i<outsize;i++){
+      printf("%02x ",outbuf[i]);
+      }
+    printf("\n");
+#endif
+    outsize=0;
+    }
+  }
+}
+
+////
+// Main function
+////
+
+int main(void){
+char name[MAX_NAME];
+int sd=virtualSerialOpen(name,SERIAL_SPEED);
+printf("Slave device is '%s'\n",name);
+setup();
+handleEvents(sd);
+virtualSerialClose(sd);
+exit(0);
+}
diff --git a/arduino.h b/arduino.h
new file mode 100644
index 0000000..25ccaad
--- /dev/null
+++ b/arduino.h
@@ -0,0 +1,26 @@
+/*
+ * Constants and prototype for Arduino simulator
+ */
+
+////
+// Constants
+////
+#define 	BUTTONS_NB		4
+#define		LEDS_NB			6
+
+////
+// Prototypes of defined fonctions
+////
+
+void led(int num,unsigned char state);
+unsigned char button(int num);
+void serialSend(unsigned char *data,int size);
+long millis(void);
+
+////
+// Prototypes of users handlers
+////
+
+void setup(void);
+void loop(void);
+void serialInHandler(unsigned char byte);
diff --git a/arduino.o b/arduino.o
new file mode 100644
index 0000000..4da0a4a
Binary files /dev/null and b/arduino.o differ
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..4689793
--- /dev/null
+++ b/main.c
@@ -0,0 +1,37 @@
+/*
+ * Arduino program example
+ */
+
+////
+// Include files
+////
+#include "arduino.h"
+#include <stdio.h>
+////
+// Global variables
+// my variables 
+int i;
+long now;
+//
+////
+
+////
+// Handler functions
+///
+
+void setup(void){
+	i = 0;	
+}
+
+void loop(void){
+	led((i-1 + LEDS_NB) % LEDS_NB, 0);
+	led(i % LEDS_NB, 1);
+	now = millis();
+	while(millis() != now+100);
+	i = (i+1) %  LEDS_NB;
+	
+}
+
+
+void serialInHandler(unsigned char byte){
+}
diff --git a/main.o b/main.o
new file mode 100644
index 0000000..29e6110
Binary files /dev/null and b/main.o differ
diff --git a/virtual_serial.c b/virtual_serial.c
new file mode 100644
index 0000000..aa69b5a
--- /dev/null
+++ b/virtual_serial.c
@@ -0,0 +1,69 @@
+/*
+ * Virtual Serial library
+ */
+
+////
+// Include files
+////
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <termios.h>
+#include <strings.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <linux/serial.h>
+#include <pty.h>
+
+#include "virtual_serial.h"
+
+////
+// Functions
+////
+
+//
+// Serial structure filling
+//
+static struct termios serialConfig(int speed){
+int fspeed;
+switch(speed){
+  case 1200: fspeed=B1200; break;
+  case 2400: fspeed=B2400; break;
+  case 4800: fspeed=B4800; break;
+  case 9600: fspeed=B9600; break;
+  case 19200: fspeed=B19200; break;
+  case 38400: fspeed=B38400; break;
+  case 57600: fspeed=B57600; break;
+  case 115200: fspeed=B115200; break;
+  default: fprintf(stderr,"Unknown serial speed %d.\n",speed); exit(-1);
+  }
+struct termios new;
+bzero(&new,sizeof(new));
+new.c_cflag=CLOCAL|CREAD|fspeed|CS8;
+new.c_iflag=0;
+new.c_oflag=0;
+new.c_lflag=0;     /* set input mode (non-canonical, no echo,...) */
+new.c_cc[VTIME]=0; /* inter-character timer unused */
+new.c_cc[VMIN]=1;  /* blocking read until 1 char received */
+return new;
+}
+
+//
+// Virtual serial creation
+//
+
+int virtualSerialOpen(char *name,int speed){
+int master;
+int slave;
+struct termios serial=serialConfig(speed);
+openpty(&master,&slave,name,&serial,NULL);
+return master;
+}
+
+//
+// Serial port termination
+//
+void virtualSerialClose(int fd){
+close(fd);
+}
diff --git a/virtual_serial.h b/virtual_serial.h
new file mode 100644
index 0000000..20c91e6
--- /dev/null
+++ b/virtual_serial.h
@@ -0,0 +1,9 @@
+/*
+ * Public definitions for virtual serial library
+ */
+
+////
+// Public prototypes
+////
+int virtualSerialOpen(char *name,int speed);
+void virtualSerialClose(int fd);
diff --git a/virtual_serial.o b/virtual_serial.o
new file mode 100644
index 0000000..d38622a
Binary files /dev/null and b/virtual_serial.o differ
--
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