u-blox / C027_Support

support library for C027 helper functions for Buffer Pipes, Buffered Serial Port (rtos capable) and GPS parsing. It includes modem APIs for USSD, SMS and Sockets.

Dependents:   HTTPClient_Cellular_HelloWorld Cellular_HelloMQTT MbedSmartRestMain Car_Bon_car_module ... more

This library is intended to be used with u-blox products such as the C027 or a shield with u-blox cellular and GPS modules like the cellular and positioning shield from Embedded Artist.

For 2G/GSM and 3G/UMTS you need to:

  • have a SIM card and know its PIN number
  • need to know you network operators APN setting These setting should be passed to the connect or init and join functions. You can also extend the APN database in MDMAPN.h.

For CDMA products you need to make sure that you have provisioned and activated the modem with either Sprint or Verizon.

Diff: SerialPipe.cpp

Revision:
70:0a87d256cd24
Parent:
45:ebc2fd8dcf21
Child:
74:208e3e32d263
--- a/SerialPipe.cpp	Wed May 14 05:54:37 2014 +0000
+++ b/SerialPipe.cpp	Wed May 14 09:12:47 2014 +0000
@@ -6,18 +6,12 @@
     : _SerialPipeBase(tx,rx), _pipeRx(rxSize), _pipeTx(txSize)
 {
     attach(this, &SerialPipe::rxIrqBuf, RxIrq);
-#if defined(TARGET_UBLOX_C027) || defined(TARGET_LPC1768)
-    // the lpc1768 supports interrupt driven tx
-    attach(this, &SerialPipe::txIrqBuf, TxIrq);
-#endif
 }
 
 SerialPipe::~SerialPipe(void)
 {
     attach(NULL, RxIrq);
-#if defined(TARGET_UBLOX_C027) || defined(TARGET_LPC1768)
     attach(NULL, TxIrq);
-#endif
 }
 
 // tx channel
@@ -51,7 +45,7 @@
     return (length - count);
 }
 
-void SerialPipe::txIrqBuf(void)
+void SerialPipe::txCopy(void)
 {
     while (_SerialPipeBase::writeable() && _pipeTx.readable())
     {
@@ -60,21 +54,22 @@
     }
 }
 
+void SerialPipe::txIrqBuf(void)
+{
+    txCopy();
+    // detach tx isr if we are done 
+    if (!_pipeTx.readable())
+        attach(NULL, TxIrq);
+}
+
 void SerialPipe::txStart(void)
 {
-#if defined(TARGET_UBLOX_C027) || defined(TARGET_LPC1768)
-    __disable_irq();
-    txIrqBuf();
-    __enable_irq();
-#else
-    while (_pipeTx.readable())
-    {
-        char c = _pipeTx.getc();
-        while (!_SerialPipeBase::writeable())
-            /*wait*/;
-        _SerialPipeBase::_base_putc(c);
-    }
-#endif
+    // disable the tx isr to avoid interruption
+    attach(NULL, TxIrq);
+    txCopy();
+    // attach the tx isr to handle the remaining data
+    if (_pipeTx.readable())
+        attach(this, &SerialPipe::txIrqBuf, TxIrq);
 }
 
 // rx channel