Revision 5:e163f0e428ac, committed 2018-07-02

Comitter:

shivanandgowdakr

Date:

Mon Jul 02 12:11:51 2018 +0000

Parent:

4:2ca820a42fd5

Commit message:

USB BARCODE READER

Changed in this revision

--- a/USBHOST.lib	Fri Apr 28 08:03:04 2017 +0000
+++ b/USBHOST.lib	Mon Jul 02 12:11:51 2018 +0000
@@ -1,1 +1,1 @@
-https://developer.mbed.org/teams/ST/code/USBHOST/#d3ac9e1c0035
+https://os.mbed.com/users/shivanandgowdakr/code/USBHOST/#ccd0ac9ae1c9

--- a/main.cpp	Fri Apr 28 08:03:04 2017 +0000
+++ b/main.cpp	Mon Jul 02 12:11:51 2018 +0000
@@ -7,6 +7,8 @@
 
 
 DigitalOut led(LED1);
+ int index=0;
+char Barcode[50];
 void onMouseEvent(uint8_t buttons, int8_t x, int8_t y, int8_t z) {
     printf("buttons: %d, x: %d, y: %d, z: %d\r\n", buttons, x, y, z);
 }
@@ -31,22 +33,57 @@
     }
 }
 void onKey(uint8_t key) {
-    printf("Key: %c\r\n", key);
+       
+   // printf("%c\r", key);    
+   
+   if(index>=51)
+   {
+    
+    
+    printf(" Limit Exceeded \r\n   ");
+    printf(" Please Re Enter \r\n  ");
+    index=0;
+    memset(Barcode,'\0',50);
+    return;
+    }
+    if((key!=0x0A))
+    { 
+      Barcode[index]=key;
+      index++;  
+      //printf("%s \r\n",Barcode);
+    }
+    
+    else if((key==0x0A) &&(index<=50))
+    {
+    Barcode[index]='\0';   
+    printf("BARCODE  : %s \r\n",Barcode);
+    memset(Barcode,'\0',50);
+    index=0;
+    }
+    
+    else if((key==0x0A) && (index>=51))
+    {
+   
+    printf(" Too Many Charecters   : %s \r\n",Barcode);
+    printf(" Invalid Barcode\r\n");
+       
+    }
+    
 }
-void keyboard_task(void const *) {
+
+
+void BarCodeReader_task(void const *) {
     
-    USBHostKeyboard keyboard;
+    USBHostKeyboard BarCodeReader;
     
     while(1) {
         // try to connect a USB keyboard
-        while(!keyboard.connect())
+        while(!BarCodeReader.connect())
             Thread::wait(500);
-    
         // when connected, attach handler called on keyboard event
-        keyboard.attach(onKey);
-        
+        BarCodeReader.attach(onKey);
         // wait until the keyboard is disconnected
-        while(keyboard.connected())
+        while(BarCodeReader.connected())
             Thread::wait(500);
     }
 }
@@ -105,9 +142,11 @@
 }
 
 int main() {
-    Thread msdTask(msd_task, NULL, osPriorityNormal, 1024 * 4);
-    Thread mouseTask(mouse_task, NULL, osPriorityNormal, 1024* 4);
-    Thread keyboardTask(keyboard_task, NULL, osPriorityNormal, 1024 * 4);
+    
+    memset(Barcode,'\0',20);
+    Thread msdTask(msd_task, NULL, osPriorityNormal, 4096);
+    Thread mouseTask(mouse_task, NULL, osPriorityNormal, 4096);
+    Thread BarCodeTask(BarCodeReader_task, NULL, osPriorityNormal, 4096);
     
     while(1) {
         led=!led;