| CMSIS-SVD Version 1.10 CMSIS System View Description

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SVD File Example

    <?xml version="1.0" encoding="utf-8"?>

    <!-- File naming: <vendor>_<part/series name>.svd -->

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      Copyright (C) 2012 ARM Limited. All rights reserved.

      Purpose: System Viewer Description (SVD) Example (Schema Version 1.0)
               This is a description of a none-existent and incomplete device
               for demonstration purposes only.

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    <device schemaVersion="1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="CMSIS-SVD_Schema_1_0.xsd" >
      <name>ARMCM3xxx</name>                                          <!-- name of part or part series -->
      <version>1.0</version>                                          <!-- version of this description -->
      <description>ARM 32-bit Cortex-M3 Microcontroller based device, CPU clock up to 80MHz, etc. </description>
      <addressUnitBits>8</addressUnitBits>                            <!-- byte addressable memory -->
      <width>32</width>                                               <!-- bus width is 32 bits -->
      <!-- default settings implicitly inherited by subsequent sections -->
      <size>32</size>                                                 <!-- this is the default size (number of bits) of all peripherals
                                                                           and register that do not define "size" themselves -->
      <access>read-write</access>                                     <!-- default access permission for all subsequent registers -->
      <resetValue>0x00000000</resetValue>                             <!-- by default all bits of the registers are initialized to 0 on reset -->
      <resetMask>0xFFFFFFFF</resetMask>                               <!-- by default all 32Bits of the registers are used -->

      <peripherals>
        <!-- Timer 0 -->
        <peripheral>
          <name>TIMER0</name>
          <version>1.0</version>
          <description>32 Timer / Counter, counting up or down from different sources</description>
          <groupName>TIMER</groupName>
          <baseAddress>0x40010000</baseAddress>
          <size>32</size>
          <access>read-write</access>

          <addressBlock>
            <offset>0</offset>
            <size>0x100</size>
            <usage>registers</usage>
          </addressBlock>

          <interrupt>
            <name>TIMER0</name>
            <value>0</value>
          </interrupt>

          <registers>
          <!-- CR: Control Register -->
            <register>
              <name>CR</name>
              <description>Control Register</description>
              <addressOffset>0x00</addressOffset>
              <size>32</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0x1337F7F</resetMask>

              <fields>
                <!-- EN: Enable -->
                <field>
                  <name>EN</name>
                  <description>Enable</description>
                  <bitRange>[0:0]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Disable</name>
                      <description>Timer is disabled and does not operate</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Enable</name>
                      <description>Timer is enabled and can operate</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- RST: Reset -->
                <field>
                  <name>RST</name>
                  <description>Reset Timer</description>
                  <bitRange>[1:1]</bitRange>
                  <access>write-only</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Reserved</name>
                      <description>Write as ZERO if necessary</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Reset_Timer</name>
                      <description>Reset the Timer</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- CNT: Counting Direction -->
                <field>
                  <name>CNT</name>
                  <description>Counting direction</description>
                  <bitRange>[3:2]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Count_UP</name>
                      <description>Timer Counts UO and wraps, if no STOP condition is set</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Count_DOWN</name>
                      <description>Timer Counts DOWN and wraps, if no STOP condition is set</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Toggle</name>
                      <description>Timer Counts up to MAX, then DOWN to ZERO, if no STOP condition is set</description>
                      <value>2</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- MODE: Operation Mode -->
                <field>
                  <name>MODE</name>
                  <description>Operation Mode</description>
                  <bitRange>[6:4]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Continous</name>
                      <description>Timer runs continously</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Single_ZERO_MAX</name>
                      <description>Timer counts to 0x00 or 0xFFFFFFFF (depending on CNT) and stops</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Single_MATCH</name>
                      <description>Timer counts to the Value of MATCH Register and stops</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Reload_ZERO_MAX</name>
                      <description>Timer counts to 0x00 or 0xFFFFFFFF (depending on CNT), loads the RELOAD Value and continues</description>
                      <value>3</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Reload_MATCH</name>
                      <description>Timer counts to the Value of MATCH Register, loads the RELOAD Value and continues</description>
                      <value>4</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- PSC: Use Prescaler -->
                <field>
                  <name>PSC</name>
                  <description>Use Prescaler</description>
                  <bitRange>[7:7]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Disabled</name>
                      <description>Prescaler is not used</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Enabled</name>
                      <description>Prescaler is used as divider</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- CNTSRC: Timer / Counter Soruce Divider -->
                <field>
                  <name>CNTSRC</name>
                  <description>Timer / Counter Source Divider</description>
                  <bitRange>[11:8]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>CAP_SRC</name>
                      <description>Capture Source is used directly</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div2</name>
                      <description>Capture Source is divided by 2</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div4</name>
                      <description>Capture Source is divided by 4</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div8</name>
                      <description>Capture Source is divided by 8</description>
                      <value>3</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div16</name>
                      <description>Capture Source is divided by 16</description>
                      <value>4</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div32</name>
                      <description>Capture Source is divided by 32</description>
                      <value>5</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div64</name>
                      <description>Capture Source is divided by 64</description>
                      <value>6</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div128</name>
                      <description>Capture Source is divided by 128</description>
                      <value>7</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>CAP_SRC_div256</name>
                      <description>Capture Source is divided by 256</description>
                      <value>8</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- CAPSRC: Timer / COunter Capture Source -->
                <field>
                  <name>CAPSRC</name>
                  <description>Timer / Counter Capture Source</description>
                  <bitRange>[15:12]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>CClk</name>
                      <description>Core Clock</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_0</name>
                      <description>GPIO A, PIN 0</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_1</name>
                      <description>GPIO A, PIN 1</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_2</name>
                      <description>GPIO A, PIN 2</description>
                      <value>3</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_3</name>
                      <description>GPIO A, PIN 3</description>
                      <value>4</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_4</name>
                      <description>GPIO A, PIN 4</description>
                      <value>5</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_5</name>
                      <description>GPIO A, PIN 5</description>
                      <value>6</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_6</name>
                      <description>GPIO A, PIN 6</description>
                      <value>7</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOA_7</name>
                      <description>GPIO A, PIN 7</description>
                      <value>8</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOB_0</name>
                      <description>GPIO B, PIN 0</description>
                      <value>9</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOB_1</name>
                      <description>GPIO B, PIN 1</description>
                      <value>10</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOB_2</name>
                      <description>GPIO B, PIN 2</description>
                      <value>11</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOB_3</name>
                      <description>GPIO B, PIN 3</description>
                      <value>12</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOC_0</name>
                      <description>GPIO C, PIN 0</description>
                      <value>13</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOC_5</name>
                      <description>GPIO C, PIN 1</description>
                      <value>14</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>GPIOC_6</name>
                      <description>GPIO C, PIN 2</description>
                      <value>15</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- CAPEDGE: Capture Edge -->
                <field>
                  <name>CAPEDGE</name>
                  <description>Capture Edge, select which Edge should result in a counter increment or decrement</description>
                  <bitRange>[17:16]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>RISING</name>
                      <description>Only rising edges result in a counter increment or decrement</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>FALLING</name>
                      <description>Only falling edges  result in a counter increment or decrement</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>BOTH</name>
                      <description>Rising and falling edges result in a counter increment or decrement</description>
                      <value>2</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- TRGEXT: Triggers an other Peripheral -->
                <field>
                  <name>TRGEXT</name>
                  <description>Triggers an other Peripheral</description>
                  <bitRange>[21:20]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>NONE</name>
                      <description>No Trigger is emitted</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>DMA1</name>
                      <description>DMA Controller 1 is triggered, dependant on MODE</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>DMA2</name>
                      <description>DMA Controller 2 is triggered, dependant on MODE</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>UART</name>
                      <description>UART is triggered, dependant on MODE</description>
                      <value>3</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- Reload: Selects Reload Register n -->
                <field>
                  <name>RELOAD</name>
                  <description>Select RELOAD Register n to reload Timer on condition</description>
                  <bitRange>[25:24]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>RELOAD0</name>
                      <description>Selects Reload Register number 0</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD1</name>
                      <description>Selects Reload Register number 1</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD2</name>
                      <description>Selects Reload Register number 2</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD3</name>
                      <description>Selects Reload Register number 3</description>
                      <value>3</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- IDR: Inc or dec Reload Register Selection -->
                <field>
                  <name>IDR</name>
                  <description>Selects, if Reload Register number is incremented, decremented or not modified</description>
                  <bitRange>[27:26]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>KEEP</name>
                      <description>Reload Register number does not change automatically</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>INCREMENT</name>
                      <description>Reload Register number is incremented on each match</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>DECREMENT</name>
                      <description>Reload Register number is decremented on each match</description>
                      <value>2</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- START: Starts / Stops the Timer/Counter -->
                <field>
                  <name>S</name>
                  <description>Starts and Stops the Timer / Counter</description>
                  <bitRange>[31:31]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>STOP</name>
                      <description>Timer / Counter is stopped</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>START</name>
                      <description>Timer / Counter is started</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>
              </fields>
            </register>

            <!-- SR: Status Register -->
            <register>
              <name>SR</name>
              <description>Status Register</description>
              <addressOffset>0x04</addressOffset>
              <size>16</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xD701</resetMask>

              <fields>
                <!-- RUN: Shows if Timer is running -->
                <field>
                  <name>RUN</name>
                  <description>Shows if Timer is running or not</description>
                  <bitRange>[0:0]</bitRange>
                  <access>read-only</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Stopped</name>
                      <description>Timer is not running</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Running</name>
                      <description>Timer is running</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- MATCH: Shows if a Match was hit -->
                <field>
                  <name>MATCH</name>
                  <description>Shows if the MATCH was hit</description>
                  <bitRange>[8:8]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>No_Match</name>
                      <description>The MATCH condition was not hit</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Match_Hit</name>
                      <description>The MATCH condition was hit</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- UN: Shows if an underflow occured -->
                <field>
                  <name>UN</name>
                  <description>Shows if an underflow occured. This flag is sticky</description>
                  <bitRange>[9:9]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>No_Underflow</name>
                      <description>No underflow occured since last clear</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Underflow</name>
                      <description>A minimum of one underflow occured since last clear</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- OV: Shows if an overflow occured -->
                <field>
                  <name>OV</name>
                  <description>Shows if an overflow occured. This flag is sticky</description>
                  <bitRange>[10:10]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>No_Overflow</name>
                      <description>No overflow occured since last clear</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Overflow_occured</name>
                      <description>A minimum of one overflow occured since last clear</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- RST: Shows if Timer is in RESET state -->
                <field>
                  <name>RST</name>
                  <description>Shows if Timer is in RESET state</description>
                  <bitRange>[12:12]</bitRange>
                  <access>read-only</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Ready</name>
                      <description>Timer is not in RESET state and can operate</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>In_Reset</name>
                      <description>Timer is in RESET state and can not operate</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- RELOAD: Shows the currently active Reload Register -->
                <field>
                  <name>RELOAD</name>
                  <description>Shows the currently active RELOAD Register</description>
                  <bitRange>[15:14]</bitRange>
                  <access>read-only</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>RELOAD0</name>
                      <description>Reload Register number 0 is active</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD1</name>
                      <description>Reload Register number 1 is active</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD2</name>
                      <description>Reload Register number 2 is active</description>
                      <value>2</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>RELOAD3</name>
                      <description>Reload Register number 3 is active</description>
                      <value>3</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>
              </fields>
            </register>

            <!-- INT: Interrupt Register -->
            <register>
              <name>INT</name>
              <description>Interrupt Register</description>
              <addressOffset>0x10</addressOffset>
              <size>16</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0x0771</resetMask>

              <fields>
                <!-- EN: Interrupt Enable -->
                <field>
                  <name>EN</name>
                  <description>Interrupt Enable</description>
                  <bitRange>[0:0]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Disabled</name>
                      <description>Timer does not generate Interrupts</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Enable</name>
                      <description>Timer triggers the TIMERn Interrupt</description>
                      <value>1</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>

                <!-- MODE: Interrupt Mode -->
                <field>
                  <name>MODE</name>
                  <description>Interrupt Mode, selects on which condition the Timer should generate an Interrupt</description>
                  <bitRange>[6:4]</bitRange>
                  <access>read-write</access>
                  <enumeratedValues>
                    <enumeratedValue>
                      <name>Match</name>
                      <description>Timer generates an Interrupt when the MATCH condition is hit</description>
                      <value>0</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Underflow</name>
                      <description>Timer generates an Interrupt when it underflows</description>
                      <value>1</value>
                    </enumeratedValue>
                    <enumeratedValue>
                      <name>Overflow</name>
                      <description>Timer generates an Interrupt when it overflows</description>
                      <value>2</value>
                    </enumeratedValue>
                  </enumeratedValues>
                </field>
              </fields>
            </register>

            <!-- COUNT: Counter Register -->
            <register>
              <name>COUNT</name>
              <description>The Counter Register reflects the actual Value of the Timer/Counter</description>
              <addressOffset>0x20</addressOffset>
              <size>32</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xFFFFFFFF</resetMask>
            </register>

            <!-- MATCH: Match Register -->
            <register>
              <name>MATCH</name>
              <description>The Match Register stores the compare Value for the MATCH condition</description>
              <addressOffset>0x24</addressOffset>
              <size>32</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xFFFFFFFF</resetMask>
            </register>

            <!-- PRESCALE: Prescale Read Register -->
            <register>
              <name>PRESCALE_RD</name>
              <description>The Prescale Register stores the Value for the prescaler. The cont event gets divided by this value</description>
              <addressOffset>0x28</addressOffset>
              <size>32</size>
              <access>read-only</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xFFFFFFFF</resetMask>
            </register>

            <!-- PRESCALE: Prescale Write Register -->
            <register>
              <name>PRESCALE_WR</name>
              <description>The Prescale Register stores the Value for the prescaler. The cont event gets divided by this value</description>
              <addressOffset>0x28</addressOffset>
              <size>32</size>
              <access>write-only</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xFFFFFFFF</resetMask>
            </register>

            <!-- RELOAD: Array of Reload Register with 4 elements-->
            <register>
              <dim>4</dim>
              <dimIncrement>4</dimIncrement>
              <dimIndex>0,1,2,3</dimIndex>
              <name>RELOAD[%s]</name>
              <description>The Reload Register stores the Value the COUNT Register gets reloaded on a when a condition was met.</description>
              <addressOffset>0x50</addressOffset>
              <size>32</size>
              <access>read-write</access>
              <resetValue>0x00000000</resetValue>
              <resetMask>0xFFFFFFFF</resetMask>
            </register>
          </registers>
        </peripheral>

        <!-- Timer 1 -->
        <peripheral derivedFrom="TIMER0">
          <name>TIMER1</name>
          <baseAddress>0x40010100</baseAddress>
          <interrupt>
            <name>TIMER1</name>
            <value>4</value>
          </interrupt>
        </peripheral>

        <!-- Timer 2 -->
        <peripheral derivedFrom="TIMER0">
          <name>TIMER2</name>
          <baseAddress>0x40010200</baseAddress>
          <interrupt>
            <name>TIMER2</name>
            <value>6</value>
          </interrupt>
        </peripheral>
      </peripherals>
    </device>