Diff: main.cpp

Revision:

0:3e75e4bf3124

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 05 19:11:17 2018 +0000
@@ -0,0 +1,181 @@
+/**
+
+ RX RX RX
+ 
+ Date:  Jan 2018
+ Version: 1.0
+ More info are here: 
+ http://www.emcu.eu/how-to-use-the-x-nucleo-ids01a4-spirit1-in-p2p-mode-ack-under-mbed/
+
+ ******************************************************************************
+ * @file    main.cpp
+ * @author  Rosarium PILA, STMicroelectronics
+ * @version V1.0.0
+ * @date    June 19th, 2017
+ * @brief   mbed test application for the STMicroelectronics X-NUCLEO-IDB01A4/5
+ *          Spirit1 Expansion Board
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. Redistributions in binary form must reproduce the above copyright notice,
+ *      this list of conditions and the following disclaimer in the documentation
+ *      and/or other materials provided with the distribution.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+#include "mbed.h"
+#include "SimpleSpirit1.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#define TEST_STR_LEN (32) 
+static char 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 char 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); /* (SPI_CLK) = (D13:PA5:resistorR7 --> D3:PB3:resistorR4)*/
+
+static volatile bool rx_done_flag = false; 
+static volatile bool tx_done_flag = false; 
+static volatile bool send_data_flag = false;
+
+static DigitalOut TestLED(D5);         /* LED of IDS01A4/5 */
+static InterruptIn event(USER_BUTTON); /* Interrupt event to give userinterface to send pkt. */
+
+/**
+ * @brief  callback_func
+ * @param  callback event
+ * @retval None.
+ */
+static void callback_func(int event) 
+{
+  if(event == SimpleSpirit1::RX_DONE) 
+  {              
+    rx_done_flag = 1;
+  }
+  else if (event == SimpleSpirit1::TX_DONE) 
+  {
+    tx_done_flag = 1;
+  }
+}
+
+/**
+ * @brief  set_send_data_flag
+ * @param  None
+ * @retval None
+ */
+static void set_send_data_flag(void)
+{  
+  send_data_flag = 1 ;
+}
+
+/**
+ * @brief  send_data
+ * @param  None
+ * @retval None
+ */
+static void send_data(void)
+{
+  printf("\r\n***Sending a packet***");  
+  
+  while(myspirit.is_receiving()); /* wait for ongoing RX ends */
+ 
+  size_t curr_len = strlen((const char*)send_buf) + 1;
+  myspirit.send(send_buf, curr_len);
+}
+
+/**
+ * @brief  read_rcvd_data
+ * @param  None
+ * @retval None
+ */
+static 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));
+      
+      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); 
+      
+      wait_ms(100);
+}
+
+
+/**
+ * @brief  main routine
+ * @param  None
+ * @retval int
+ */
+int main() 
+{  
+  TestLED = 0;                  /* LED off */
+  
+  myspirit.attach_irq_callback(callback_func);
+  
+  myspirit.on();
+  
+  printf("\n\r************** RX (X-NUCLEO-IDS01A4/5) **************\r\n");
+  printf("Receive a strinbg and back it to Tx\n\r\n\n");
+  
+  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 */
+    
+    if(rx_done_flag) 
+    {
+      rx_done_flag = false; 
+      read_rcvd_data();
+      
+      if(strcmp(send_buf,read_buf) == 0)
+      {
+        printf("RxTx OK \n\r");
+        TestLED = !TestLED;     /* Toggle LED at the receiver */
+      }
+      else
+        printf("RxTx FAIL \n\r");
+      
+      wait_ms(100);
+      send_data_flag = false;
+      send_data();                
+    }
+    
+    else if (tx_done_flag)
+    {
+      tx_done_flag = false;
+      printf("\r\n***Packet sent ***\r\nSent string ='%s' (len=%d)\n\r", send_buf, strlen((const char*)send_buf) + 1);
+    }
+  }
+  
+  /* unreachable */
+  // myspirit.off();
+  // return 0;
+}