Diff: main.cpp

Revision:

4:cae1fa054b86

Parent:

3:29bbb772ee62

Child:

5:a65ed26b0f98

--- a/main.cpp	Mon Jun 19 08:52:28 2017 +0000
+++ b/main.cpp	Mon Jun 19 10:25:09 2017 +0000
@@ -4,7 +4,7 @@
  * @author  Rosarium PILA, STMicroelectronics
  * @version V1.0.0
  * @date    June 19th, 2017
- * @brief   mbed Hello World test application for the STMicroelectronics X-NUCLEO-IDB01A4/5
+ * @brief   mbed test application for the STMicroelectronics X-NUCLEO-IDB01A4/5
  *          Spirit1 Expansion Board
  ******************************************************************************
  * @attention
@@ -43,15 +43,18 @@
 static uint8_t send_buf[TEST_STR_LEN] ={'S','P','I','R','I','T','1',' ','H','E','L','L','O',' ','W','O','R','L','D',' ','P','2','P',' ','D','E','M','O'};
 static uint8_t read_buf[TEST_STR_LEN] ={'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
           
-static SimpleSpirit1 &myspirit = SimpleSpirit1::CreateInstance(D11, D12, D3, D9, D10, D2); //RPi: (SPI_CLK) = (D13:PA5:resistorR7 --> D3:PB3:resistorR4)
+static SimpleSpirit1 &myspirit = SimpleSpirit1::CreateInstance(D11, D12, D3, D9, D10, D2); /* (SPI_CLK) = (D13:PA5:resistorR7 --> D3:PB3:resistorR4)*/
 
 volatile bool rx_done_flag = 0; 
 volatile bool tx_done_flag = 0; 
+volatile bool send_data_flag = 0;
 
 static int curr_len = 0;
-unsigned char myValue = 0;
 
-InterruptIn event(USER_BUTTON); //RPi : //Added interrupt event to give userinterface to send pkt.
+DigitalOut TestLED = D5;      /* LED of IDS01A4/5 */
+unsigned char led_toggle = 0;
+
+InterruptIn event(USER_BUTTON); /* Interrupt event to give userinterface to send pkt. */
 
 /**
  * @brief  callback_func
@@ -70,6 +73,15 @@
   }
 }
 
+/**
+ * @brief  set_send_data_flag
+ * @param  None
+ * @retval None
+ */
+void set_send_data_flag(void)
+{  
+  send_data_flag = 1 ;
+}
 
 /**
  * @brief  send_data
@@ -80,11 +92,36 @@
 {  
   printf("\r\n***Sending a packet***\r\n");  
   
-  while(myspirit.is_receiving()); // wait for ongoing RX ends
+  while(myspirit.is_receiving()); /* wait for ongoing RX ends */
  
   curr_len = strlen((const char*)send_buf) + 1;
   myspirit.send(send_buf, curr_len);
 }
+
+/**
+ * @brief  read_rcvd_data
+ * @param  None
+ * @retval None
+ */
+void read_rcvd_data(void)
+{  
+ 
+  for(unsigned int flush_count = 0; flush_count < TEST_STR_LEN; flush_count++) read_buf[flush_count] = 0 ;/* clear the read buffer */
+      
+      int ret = myspirit.read(read_buf, sizeof(read_buf));
+      
+      led_toggle = 1 - led_toggle; 
+      TestLED = led_toggle;     /* Toggle LED at the receiver */
+      
+      if(ret == 0) 
+      {
+        printf("\nNothing to read\n\r");
+        return;
+      }
+      printf("\r\n***Received a packet***\r\n\rReceived string = '%s' (len=%d) \n\r", read_buf, ret); 
+}
+
+
 /**
  * @brief  main routine
  * @param  None
@@ -92,8 +129,7 @@
  */
 int main() 
 {  
-  DigitalOut TestLED = D5;      //RPi : LED of IDS01A4/5
-  TestLED = 0;                  //RPi : LED off
+  TestLED = 0;                  /* LED off */
   
   myspirit.attach_irq_callback(callback_func);
   
@@ -102,34 +138,28 @@
   printf("\n**************HelloWorld mbed demo for Spirit1 (X-NUCLEO-IDS01A4/5)**************\r\n");
   printf("\nPress User Button on one of the two boards to send a packaet to the other and the LED D1 on the receiver X-NUCLEO-IDS01A4/5 should toggle \n\r\n");
   
-  event.rise(&send_data); //RPi: User button interrupt trigger to send data
+  event.rise(&set_send_data_flag); /*User button interrupt trigger to set send data flag */
   
   while(1) 
   {
-    __WFE(); // low power in idle condition., waiting for an event
+    __WFE(); /* low power in idle condition., waiting for an event */
     
     if(rx_done_flag) 
     {
       rx_done_flag = 0; 
-     
-      for(unsigned int flush_count = 0; flush_count < TEST_STR_LEN; flush_count++) read_buf[flush_count] = 0 ;//RPi:clear the read buffer
-      
-      int ret = myspirit.read(read_buf, sizeof(read_buf));
-      
-      myValue = 1 - myValue; 
-      TestLED = myValue;     //RPi: Toggle LED at the receiver
-      
-      if(ret == 0) {
-        printf("\nNothing to read\n\r");
-        continue;
-      }
-      printf("\r\n***Received a packet***\r\n\rReceived string = '%s' (len=%d) \n\r", read_buf, ret); 
+      read_rcvd_data();
+    }
+    
+    else if (send_data_flag)
+    {
+      send_data_flag = 0;
+      send_data();
     }
     
     else if (tx_done_flag)
     {
       tx_done_flag = 0;
-      printf("\r\n***Packet sent***\r\nSent string ='%s' (len=%d)\n\r", send_buf, strlen((const char*)send_buf) + 1);
+      printf("\r\n***Packet sent ***\r\nSent string ='%s' (len=%d)\n\r", send_buf, strlen((const char*)send_buf) + 1);
     }
   }