Diff: main.cpp

Revision:

0:b51700dcba34

Child:

1:63483ec4d0ff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Oct 13 16:09:30 2017 +0000
@@ -0,0 +1,184 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 u-blox
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mbed.h"
+#include "ATCmdParser.h"
+#include "FileHandle.h"
+#include "onboard_modem_api.h"
+
+/* Definitions */
+#define OUTPUT_ENTER_KEY  "\r"
+#define AT_PARSER_BUFFER_SIZE   256
+#define AT_PARSER_TIMEOUT       8*1000 // Milliseconds
+
+/* The example program for the u-blox C030 boards. It sets up the Cellular Module then read out the IMSI of the eUICC/SIM.  
+ * The Uer LEDs (RGB) and User Button are utilised to show the activity on the board.
+ * When GNSS has a location fix, the Red Timepulse LED, next to the User LEDs, blinks every 1 second.  
+ */
+
+/* File handler */
+FileHandle *fh;
+
+/* AT Command  Parser handle */
+ATCmdParser *at;
+
+// User LEDs
+DigitalOut ledRed(LED1, 1);
+DigitalOut ledGreen(LED2, 1);
+DigitalOut ledBlue(LED3, 1);
+
+// Ethernet socket LED 
+DigitalOut ledYellow(LED4,1);
+
+// User Button
+#ifdef TARGET_UBLOX_C027
+    // No user button on C027
+    InterruptIn userButton(NC);
+#else
+    InterruptIn userButton(SW0);
+#endif
+   
+// Delay between LED changes in second
+volatile float delay = 0.5;
+
+// To check if the user pressed the User Button or not
+void threadBodyUserButtonCheck(void const *args){
+    float delayToggle = delay;
+    while (1){
+        if (userButton.read() == 1 ) {
+        // User Button is pressed 
+            delay = 0.1;
+            // Indicate with the Yellow LED on Ethernet socket 
+            ledYellow = 0;
+        }
+        else { 
+        // User button is released
+            delay = 0.5;
+            // Turn off the Yellow LED on Ethernet socket
+            ledYellow = 1;
+        }
+    }
+}
+
+// Setup the modem
+bool setup_modem(){
+
+    bool success = false;
+    
+    /* Initialize GPIO lines */
+    onboard_modem_init();
+    
+    /* Give modem a little time to settle down */
+    wait_ms(250);
+
+    for (int retry_count = 0; !success && (retry_count < 20); retry_count++) {
+        printf("...wait\r\n");
+        onboard_modem_power_up();
+        wait_ms(500);
+        // The modem tends to sends out some garbage during power up. Needs to clean up. 
+        at->flush();
+        
+        // Set AT parser timeout to 1sec for AT OK check
+        at->set_timeout(1000);
+        
+        // AT OK talk to the modem
+        if (at->send("AT")) {
+            wait_ms(100);
+            if (at->recv("OK")) {
+                success = true;
+            }
+        }
+        // Increase the parser time to 8sec       
+        at->set_timeout(8000);
+    }
+    if (success) {
+        // Set the final baud rate
+        if (at->send("AT+IPR=%d", 115200) && at->recv("OK")) {
+            // Need to wait for things to be sorted out on the modem side
+            wait_ms(100);
+            ((UARTSerial *)fh)->set_baud(115200);
+        }
+
+        // Turn off modem echoing and turn on verbose responses
+        success = at->send("ATE0;+CMEE=2") && at->recv("OK") &&
+                  // The following commands are best sent separately
+              
+                  // Turn off RTC/CTS handshaking
+                  at->send("AT&K0") && at->recv("OK") && 
+                  // Set DCD circuit(109), changes in accordance with 
+                  // the carrier detect status
+                  at->send("AT&C1") && at->recv("OK") &&
+                  // Set DTR circuit, we ignore the state change of DTR 
+                  at->send("AT&D0") && at->recv("OK"); 
+    }
+    return success;
+}
+/*
+** Reading the modem IMEI and eUICC/SIM IMSI
+** 
+*/
+
+int main()
+{
+    printf("\n\r\n\ru-blox C030-U201 Reading the modem IMEI and eUICC/SIM IMSI\n\r");
+    printf("Initialising UART for modem communication");
+    fh = new UARTSerial(MDMTXD, MDMRXD, 115200);
+    printf("...DONE\r\n");
+    
+    printf("Initialising the Modem AT Command Parser");
+    at = new ATCmdParser(fh, OUTPUT_ENTER_KEY, AT_PARSER_BUFFER_SIZE,
+            AT_PARSER_TIMEOUT, false);
+    printf("...DONE\r\n");
+    
+    printf("Initializing the modem\r\n");
+    if (setup_modem()){
+        printf("...DONE\r\nThe modem powered up\r\n");
+        char imei[15+1];
+        char imsi[15+1];
+        printf("Reading IMEI and IMSI\r\n");
+        if (at->send("AT+CGSN") && at->recv("%15[^\n]\nOK\n", imei)){
+            printf("IMEI: %s\r\n",imei);
+        }
+        if (at->send("AT+CIMI") && at->recv("%15[^\n]\nOK\n", imsi)){
+            printf("IMSI: %s\r\n",imsi);
+        }
+    }
+    else {
+        printf("Unable To intialize modem\r\n");
+    }
+    
+    printf("FINISHED...\n\r");
+    
+    // Create threadUserButtonCheck thread
+    Thread threadUserButtonCheck(threadBodyUserButtonCheck);
+
+    // Set the LED states
+    ledRed = 0;
+    ledGreen = 1;
+    ledBlue = 1;
+    
+    // Main loop
+    while(1) {
+        wait(delay);
+        // Shift the LED states
+        int carry = ledBlue;
+        ledBlue = ledRed;
+        ledRed = ledGreen;
+        ledGreen = carry;
+    }
+}
+
+// End Of File
\ No newline at end of file