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<concept id="GUID-9B52E0C3-9EBB-44C6-A1BF-2F95711FFBA4" xml:lang="en"><title>Template

Source Code</title><shortdesc>This document discusses the template code from which device drivers

are created.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-2AE61413-CECE-4E72-86AA-0DD4FFC60EC3">       <title>Template

source code</title>       <p>To help enable a base port be produced quickly,

Symbian platform provides template source code for drivers for most peripherals.

The template implements a framework and protocols for the type of peripheral;

the base port implementer then supplies additional implementation for the

particular hardware device. For example, for the UART driver, the PDD template

implements the standard hardware abstraction interfaces for serial communication,

such as the <codeph>DComm</codeph> class. It leaves some sections marked as

"TBD", which are specific to the device. Driver developers can start with

these templates and fill in the "TBD" functions to create a basic driver.

If required, additional functionality can then be added to this. </p> <p>The

template drivers are located in the <filepath>sf\os\kernelhwsrv\bsptemplate\asspandvariant\template_variant</filepath> source

directory. The <filepath>template</filepath> directory provides a variant

base port that includes all the drivers required to do the minimal base port

for any variant. </p> <p>Details of the templates for particular drivers are

discussed in the relevant sections of the <i>Base Porting Guide</i>. This

tutorial presents an additional example device driver. </p>     </section>