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Refs #789, #1874. Improved timer accuracy and added Modbus RTU support to the Silabs EMF32 port. 

git-svn-id: https://svn.code.sf.net/p/openblt/code/trunk@1147 5dc33758-31d5-4daf-9ae8-b24bf3d40d73
This commit is contained in:
Frank Voorburg 2023-12-14 13:48:27 +00:00
parent 39d8e47c0e
commit ce083a377d
6 changed files with 1088 additions and 243 deletions
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364
Target/Demo/ARMCM3_EFM32_Olimex_EM32G880F128STK_IAR/Boot/ide/efm32G880.ewd
View File

@ -1,6 +1,6 @@
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<project>
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<fileVersion>4</fileVersion>
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<name>Debug</name>
<toolchain>
@ -11,7 +11,7 @@
<name>C-SPY</name>
<archiveVersion>2</archiveVersion>
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<version>31</version>
<version>33</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -44,7 +44,7 @@
</option>
<option>
<name>MemFile</name>
<state>$TOOLKIT_DIR$\CONFIG\debugger\SiliconLaboratories\EFM32G880F128.ddf</state>
<state>$TOOLKIT_DIR$\config\debugger\SiliconLaboratories\EFM32G880F128.ddf</state>
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<option>
<name>RunToEnable</name>
@ -88,7 +88,7 @@
</option>
<option>
<name>OCLastSavedByProductVersion</name>
<state>8.40.1.21529</state>
<state>9.40.2.67586</state>
</option>
<option>
<name>UseFlashLoader</name>
@ -112,7 +112,7 @@
</option>
<option>
<name>FlashLoadersV3</name>
<state>$TOOLKIT_DIR$\config\flashloader\SiliconLaboratories\FlashEFM32.board</state>
<state>$TOOLKIT_DIR$/config/flashloader/SiliconLaboratories/FlashEFM32.board</state>
</option>
<option>
<name>OCImagesSuppressCheck1</name>
@ -218,6 +218,42 @@
<name>OCMulticoreSessionFile</name>
<state></state>
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<name>OCTpiuBaseOption</name>
<state>1</state>
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<name>OCOverrideSlave</name>
<state>0</state>
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<option>
<name>OCOverrideSlavePath</name>
<state></state>
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<name>C_32_64Device</name>
<state>1</state>
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<name>AuthEnable</name>
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<name>AuthSdmExplicitLib</name>
<state></state>
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<state>0</state>
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@ -453,6 +489,39 @@
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<debug>1</debug>
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<state>1</state>
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<name>CE2UsbSerialNo</name>
<state></state>
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<option>
<name>CE2IdCodeEditB</name>
<state>0xFFFF'FFFF'FFFF'FFFF'FFFF'FFFF'FFFF'FFFF</state>
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<option>
<name>CE2LogFileCheck</name>
<state>0</state>
</option>
<option>
<name>CE2LogFileEditB</name>
<state>$PROJ_DIR$\cspycomm.log</state>
</option>
<option>
<name>OCDriverInfo</name>
<state>1</state>
</option>
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<name>GDBSERVER_ID</name>
<archiveVersion>2</archiveVersion>
@ -494,7 +563,7 @@
<name>IJET_ID</name>
<archiveVersion>2</archiveVersion>
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<version>8</version>
<version>9</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -718,6 +787,58 @@
<name>CCIjetUsbSerialNoSelect</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARReset</name>
<state>0</state>
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<option>
<name>CatchV8AREREL1NS</name>
<state>0</state>
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<state>0</state>
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<name>CatchV8AREREL2NS</name>
<state>0</state>
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<option>
<name>CatchV8AREREL3S</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL1NS</name>
<state>0</state>
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<option>
<name>CatchV8ARREL1NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL1S</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL1S</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL2NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL2NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL3S</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL3S</name>
<state>0</state>
</option>
</data>
</settings>
<settings>
@ -924,7 +1045,7 @@
<name>LMIFTDI_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>2</version>
<version>3</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -951,6 +1072,19 @@
<name>CCLmiFtdiInterfaceCmdLine</name>
<state>0</state>
</option>
<option>
<name>CCLmiftdiUsbSerialNo</name>
<state></state>
</option>
<option>
<name>CCLmiftdiUsbSerialNoSelect</name>
<state>0</state>
</option>
<option>
<name>CCLmiftdiResetList</name>
<version>0</version>
<state>0</state>
</option>
</data>
</settings>
<settings>
@ -1003,7 +1137,7 @@
<name>STLINK_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>6</version>
<version>8</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -1118,9 +1252,17 @@
</option>
<option>
<name>CCSTLinkProbeList</name>
<version>0</version>
<version>2</version>
<state>2</state>
</option>
<option>
<name>CCSTLinkTargetVccEnable</name>
<state>1</state>
</option>
<option>
<name>CCSTLinkTargetVoltage</name>
<state>###Uninitialized###</state>
</option>
</data>
</settings>
<settings>
@ -1223,7 +1365,7 @@
<name>XDS100_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>8</version>
<version>9</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -1348,7 +1490,7 @@
</option>
<option>
<name>CCXds100ResetList</name>
<version>0</version>
<version>1</version>
<state>0</state>
</option>
<option>
@ -1397,6 +1539,10 @@
<name>OCXDSDigitalStatesConfigFile</name>
<state>1</state>
</option>
<option>
<name>OCSelectedCoreName</name>
<state>1</state>
</option>
</data>
</settings>
<debuggerPlugins>
@ -1416,10 +1562,6 @@
<file>$TOOLKIT_DIR$\plugins\rtos\FreeRtos\FreeRtosArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\HWRTOSplugin\HWRTOSplugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\Mbed\MbedArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
@ -1432,30 +1574,18 @@
<file>$TOOLKIT_DIR$\plugins\rtos\OpenRTOS\OpenRTOSPlugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\RemedyRtosViewer\RemedyRtosViewer.ewplugin</file>
<loadFlag>0</loadFlag>
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<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SafeRTOS\SafeRTOSPlugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm8.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm8BE.ewplugin</file>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm9a.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\ThreadX\ThreadXArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\TI-RTOS\tirtosplugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\uCOS-II\uCOS-II-286-KA-CSpy.ewplugin</file>
<loadFlag>0</loadFlag>
@ -1492,7 +1622,7 @@
<name>C-SPY</name>
<archiveVersion>2</archiveVersion>
<data>
<version>31</version>
<version>33</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
@ -1699,6 +1829,42 @@
<name>OCMulticoreSessionFile</name>
<state></state>
</option>
<option>
<name>OCTpiuBaseOption</name>
<state>1</state>
</option>
<option>
<name>OCOverrideSlave</name>
<state>0</state>
</option>
<option>
<name>OCOverrideSlavePath</name>
<state></state>
</option>
<option>
<name>C_32_64Device</name>
<state>1</state>
</option>
<option>
<name>AuthEnable</name>
<state>0</state>
</option>
<option>
<name>AuthSdmSelection</name>
<state>1</state>
</option>
<option>
<name>AuthSdmManifest</name>
<state></state>
</option>
<option>
<name>AuthSdmExplicitLib</name>
<state></state>
</option>
<option>
<name>AuthEnforce</name>
<state>0</state>
</option>
</data>
</settings>
<settings>
@ -1934,6 +2100,39 @@
</option>
</data>
</settings>
<settings>
<name>E2_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>0</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
<name>E2PowerFromProbe</name>
<state>1</state>
</option>
<option>
<name>CE2UsbSerialNo</name>
<state></state>
</option>
<option>
<name>CE2IdCodeEditB</name>
<state>0xFFFF'FFFF'FFFF'FFFF'FFFF'FFFF'FFFF'FFFF</state>
</option>
<option>
<name>CE2LogFileCheck</name>
<state>0</state>
</option>
<option>
<name>CE2LogFileEditB</name>
<state>$PROJ_DIR$\cspycomm.log</state>
</option>
<option>
<name>OCDriverInfo</name>
<state>1</state>
</option>
</data>
</settings>
<settings>
<name>GDBSERVER_ID</name>
<archiveVersion>2</archiveVersion>
@ -1975,7 +2174,7 @@
<name>IJET_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>8</version>
<version>9</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
@ -2199,6 +2398,58 @@
<name>CCIjetUsbSerialNoSelect</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARReset</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREREL1NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREREL1S</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREREL2NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREREL3S</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL1NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL1NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL1S</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL1S</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL2NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL2NS</name>
<state>0</state>
</option>
<option>
<name>CatchV8AREEL3S</name>
<state>0</state>
</option>
<option>
<name>CatchV8ARREL3S</name>
<state>0</state>
</option>
</data>
</settings>
<settings>
@ -2405,7 +2656,7 @@
<name>LMIFTDI_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>2</version>
<version>3</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
@ -2432,6 +2683,19 @@
<name>CCLmiFtdiInterfaceCmdLine</name>
<state>0</state>
</option>
<option>
<name>CCLmiftdiUsbSerialNo</name>
<state></state>
</option>
<option>
<name>CCLmiftdiUsbSerialNoSelect</name>
<state>0</state>
</option>
<option>
<name>CCLmiftdiResetList</name>
<version>0</version>
<state>0</state>
</option>
</data>
</settings>
<settings>
@ -2484,7 +2748,7 @@
<name>STLINK_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>6</version>
<version>8</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
@ -2599,9 +2863,17 @@
</option>
<option>
<name>CCSTLinkProbeList</name>
<version>0</version>
<version>2</version>
<state>2</state>
</option>
<option>
<name>CCSTLinkTargetVccEnable</name>
<state>1</state>
</option>
<option>
<name>CCSTLinkTargetVoltage</name>
<state>###Uninitialized###</state>
</option>
</data>
</settings>
<settings>
@ -2704,7 +2976,7 @@
<name>XDS100_ID</name>
<archiveVersion>2</archiveVersion>
<data>
<version>8</version>
<version>9</version>
<wantNonLocal>1</wantNonLocal>
<debug>0</debug>
<option>
@ -2829,7 +3101,7 @@
</option>
<option>
<name>CCXds100ResetList</name>
<version>0</version>
<version>1</version>
<state>0</state>
</option>
<option>
@ -2878,6 +3150,10 @@
<name>OCXDSDigitalStatesConfigFile</name>
<state>1</state>
</option>
<option>
<name>OCSelectedCoreName</name>
<state>1</state>
</option>
</data>
</settings>
<debuggerPlugins>
@ -2897,10 +3173,6 @@
<file>$TOOLKIT_DIR$\plugins\rtos\FreeRtos\FreeRtosArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\HWRTOSplugin\HWRTOSplugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\Mbed\MbedArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
@ -2913,30 +3185,18 @@
<file>$TOOLKIT_DIR$\plugins\rtos\OpenRTOS\OpenRTOSPlugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\RemedyRtosViewer\RemedyRtosViewer.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SafeRTOS\SafeRTOSPlugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm8.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm8BE.ewplugin</file>
<file>$TOOLKIT_DIR$\plugins\rtos\SMX\smxAwareIarArm9a.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\ThreadX\ThreadXArmPlugin.ENU.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\TI-RTOS\tirtosplugin.ewplugin</file>
<loadFlag>0</loadFlag>
</plugin>
<plugin>
<file>$TOOLKIT_DIR$\plugins\rtos\uCOS-II\uCOS-II-286-KA-CSpy.ewplugin</file>
<loadFlag>0</loadFlag>

321
Target/Demo/ARMCM3_EFM32_Olimex_EM32G880F128STK_IAR/Boot/ide/efm32G880.ewp
View File

@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<project>
<fileVersion>3</fileVersion>
<fileVersion>4</fileVersion>
<configuration>
<name>Debug</name>
<toolchain>
@ -11,9 +11,13 @@
<name>General</name>
<archiveVersion>3</archiveVersion>
<data>
<version>31</version>
<version>36</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
<name>BrowseInfoPath</name>
<state>Debug\BrowseInfo</state>
</option>
<option>
<name>ExePath</name>
<state>$PROJ_DIR$\..\bin</state>
@ -66,15 +70,7 @@
</option>
<option>
<name>OGLastSavedByProductVersion</name>
<state>8.50.4.26131</state>
</option>
<option>
<name>GeneralEnableMisra</name>
<state>0</state>
</option>
<option>
<name>GeneralMisraVerbose</name>
<state>0</state>
<state>9.40.2.67586</state>
</option>
<option>
<name>OGChipSelectEditMenu</name>
@ -96,27 +92,13 @@
<name>GenStdoutInterface</name>
<state>0</state>
</option>
<option>
<name>GeneralMisraRules98</name>
<version>0</version>
<state>1000111110110101101110011100111111101110011011000101110111101101100111111111111100110011111001110111001111111111111111111111111</state>
</option>
<option>
<name>GeneralMisraVer</name>
<state>0</state>
</option>
<option>
<name>GeneralMisraRules04</name>
<version>0</version>
<state>111101110010111111111000110111111111111111111111111110010111101111010101111111111111111111111111101111111011111001111011111011111111111111111</state>
</option>
<option>
<name>RTConfigPath2</name>
<state>$TOOLKIT_DIR$\inc\c\DLib_Config_Normal.h</state>
</option>
<option>
<name>GBECoreSlave</name>
<version>28</version>
<version>33</version>
<state>38</state>
</option>
<option>
@ -133,7 +115,7 @@
</option>
<option>
<name>CoreVariant</name>
<version>28</version>
<version>33</version>
<state>38</state>
</option>
<option>
@ -156,7 +138,7 @@
</option>
<option>
<name>GFPUCoreSlave2</name>
<version>28</version>
<version>33</version>
<state>38</state>
</option>
<option>
@ -209,13 +191,38 @@
<version>0</version>
<state>0</state>
</option>
<option>
<name>OGAarch64Abi</name>
<state>0</state>
</option>
<option>
<name>OG_32_64Device</name>
<state>0</state>
</option>
<option>
<name>BuildFilesPath</name>
<state>Debug</state>
</option>
<option>
<name>PointerAuthentication</name>
<state>0</state>
</option>
<option>
<name>FPU64</name>
<state>1</state>
</option>
<option>
<name>OG_32_64DeviceCoreSlave</name>
<version>33</version>
<state>38</state>
</option>
</data>
</settings>
<settings>
<name>ICCARM</name>
<archiveVersion>2</archiveVersion>
<data>
<version>36</version>
<version>38</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -343,10 +350,6 @@
<name>PreInclude</name>
<state></state>
</option>
<option>
<name>CompilerMisraOverride</name>
<state>0</state>
</option>
<option>
<name>CCIncludePath2</name>
<state>$PROJ_DIR$\..\..\..\..\Source</state>
@ -384,16 +387,6 @@
<name>CCOptLevelSlave</name>
<state>1</state>
</option>
<option>
<name>CompilerMisraRules98</name>
<version>0</version>
<state>1000111110110101101110011100111111101110011011000101110111101101100111111111111100110011111001110111001111111111111111111111111</state>
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<option>
<name>CompilerMisraRules04</name>
<version>0</version>
<state>111101110010111111111000110111111111111111111111111110010111101111010101111111111111111111111111101111111011111001111011111011111111111111111</state>
</option>
<option>
<name>CCPosIndRopi</name>
<state>0</state>
@ -479,13 +472,21 @@
<name>CCStackProtection</name>
<state>0</state>
</option>
<option>
<name>CCPointerAutentiction</name>
<state>0</state>
</option>
<option>
<name>CCBranchTargetIdentification</name>
<state>0</state>
</option>
</data>
</settings>
<settings>
<name>AARM</name>
<archiveVersion>2</archiveVersion>
<data>
<version>10</version>
<version>12</version>
<wantNonLocal>1</wantNonLocal>
<debug>1</debug>
<option>
@ -641,6 +642,14 @@
<name>AsmNoLiteralPool</name>
<state>0</state>
</option>
<option>
<name>PreInclude</name>
<state></state>
</option>
<option>
<name>A_32_64Device</name>
<state>1</state>
</option>
</data>
</settings>
<settings>
@ -680,26 +689,14 @@
<extensions></extensions>
<cmdline></cmdline>
<hasPrio>0</hasPrio>
</data>
</settings>
<settings>
<name>BICOMP</name>
<archiveVersion>0</archiveVersion>
<data />
</settings>
<settings>
<name>BUILDACTION</name>
<archiveVersion>1</archiveVersion>
<data>
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36
Target/Demo/ARMCM3_EFM32_Olimex_EM32G880F128STK_IAR/Boot/ide/settings/efm32G880.wsdt
View File

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517
Target/Source/ARMCM3_EFM32/mbrtu.c Normal file
View File

@ -0,0 +1,517 @@
/************************************************************************************//**
* \file Source/ARMCM3_EFM32/mbrtu.c
* \brief Bootloader Modbus RTU communication interface source file.
* \ingroup Target_ARMCM3_EFM32
* \internal
*----------------------------------------------------------------------------------------
* C O P Y R I G H T
*----------------------------------------------------------------------------------------
* Copyright (c) 2023 by Feaser http://www.feaser.com All rights reserved
*
*----------------------------------------------------------------------------------------
* L I C E N S E
*----------------------------------------------------------------------------------------
* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You have received a copy of the GNU General Public License along with OpenBLT. It
* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
*
* \endinternal
****************************************************************************************/
/****************************************************************************************
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
#if (BOOT_COM_MBRTU_ENABLE > 0)
#include "efm32.h"
#include "efm32_cmu.h"
#include "efm32_gpio.h"
#include "efm32_leuart.h"
/****************************************************************************************
* Macro definitions
****************************************************************************************/
/** \brief Timeout for transmitting a byte in milliseconds. */
#define MBRTU_BYTE_TX_TIMEOUT_MS (10u)
/****************************************************************************************
* Local data declarations
****************************************************************************************/
/** \brief Stores the number of free running counter ticks that represents the 3.5
* character delay time (T3_5) for Modbus RTU.
*/
static blt_int16u mbRtuT3_5Ticks;
/****************************************************************************************
* Function prototypes
****************************************************************************************/
static blt_bool MbRtuReceiveByte(blt_int8u *data);
static void MbRtuTransmitByte(blt_int8u data, blt_bool end_of_packet);
/************************************************************************************//**
** \brief Initializes the Modbus RTU communication interface.
** \attention It is the application's responsibility to initialize a timer peripheral
** to have an upwards counting free running counter, which runs at 100 kHz.
** \return none.
**
****************************************************************************************/
void MbRtuInit(void)
{
blt_int16u startTimeTicks;
blt_int16u deltaTimeTicks;
blt_int16u currentTimeTicks;
blt_int8u rxDummy;
LEUART_Init_TypeDef init = LEUART_INIT_DEFAULT;
/* currently, only LEUART1 is supported */
ASSERT_CT(BOOT_COM_MBRTU_CHANNEL_INDEX == 1);
/* max baudrate for LEUART is 9600 bps */
ASSERT_CT(BOOT_COM_MBRTU_BAUDRATE <= 9600);
/* calculate the 3.5 character delay time in free running counter ticks. note that
* the free running counter runs at 100 kHz, so one tick is 10 us. For baudrates >
* 19200 bps, it can be fixed to 1750 us.
*/
if (BOOT_COM_MBRTU_BAUDRATE > 19200)
{
/* set T3_5 time to a fixed value of 1750 us. */
mbRtuT3_5Ticks = 175;
}
/* calculate the T3_5 time, because the baudrate is <= 19200 bps. */
else
{
/* T3_5 [us * 10] = 3.5 * Tchar = 3.5 * 11 * 100000 / baudrate = 3850000 / baudrate.
* make sure to do integer round up though. Make sure to add 1 to adjust for 10us
* timer resolution inaccuracy.
*/
mbRtuT3_5Ticks = (blt_int16u)(((3850000UL + (BOOT_COM_MBRTU_BAUDRATE - 1U)) /
BOOT_COM_MBRTU_BAUDRATE) + 1);
}
/* configure GPIO pins */
CMU_ClockEnable(cmuClock_GPIO, true);
/* to avoid false start, configure output as high */
GPIO_PinModeSet(gpioPortC, 6, gpioModePushPull, 1);
GPIO_PinModeSet(gpioPortC, 7, gpioModeInput, 0);
/* enable CORE LE clock in order to access LE modules */
CMU_ClockEnable(cmuClock_CORELE, true);
/* select LFXO for LEUARTs (and wait for it to stabilize) */
CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFXO);
/* do not prescale clock */
CMU_ClockDivSet(cmuClock_LEUART1, cmuClkDiv_1);
/* enable LEUART1 clock */
CMU_ClockEnable(cmuClock_LEUART1, true);
/* configure LEUART */
init.enable = leuartDisable;
/* set stop bits. */
#if (BOOT_COM_MBRTU_STOPBITS == 2)
init.stopbits = leuartStopbits2;
#endif
/* set odd parity. */
#if (BOOT_COM_MBRTU_PARITY == 1)
init.parity = leuartOddParity;
#endif
/* set even parity. */
#if (BOOT_COM_MBRTU_PARITY == 2)
init.parity = leuartEvenParity;
#endif
LEUART_Init(LEUART1, &init);
LEUART_BaudrateSet(LEUART1, 0, BOOT_COM_RS232_BAUDRATE);
/* enable pins at default location */
LEUART1->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN;
/* clear previous RX interrupts */
LEUART_IntClear(LEUART1, LEUART_IF_RXDATAV);
/* finally enable it */
LEUART_Enable(LEUART1, leuartEnable);
/* enable the receiver output to be able to receive. */
MbRtuDriverOutputControlHook(BLT_FALSE);
/* wait for idle line detection. This is T3_5 time after reception of the last byte. */
startTimeTicks = MbRtuFreeRunningCounterGet();
do
{
/* service the watchdog. */
CopService();
/* get the current value of the free running counter. */
currentTimeTicks = MbRtuFreeRunningCounterGet();
/* check if a byte was received while waiting for the idle line. */
if (MbRtuReceiveByte(&rxDummy) == BLT_TRUE)
{
/* restart the idle line detection. */
startTimeTicks = currentTimeTicks;
}
/* calculate the number of ticks that elapsed since the start or since the last
* byte reception. Note that this calculation works, even if the free running counter
* overflowed.
*/
deltaTimeTicks = currentTimeTicks - startTimeTicks;
}
while (deltaTimeTicks < mbRtuT3_5Ticks);
} /*** end of MbRtuInit ***/
/************************************************************************************//**
** \brief Transmits a packet formatted for the communication interface.
** \param data Pointer to byte array with data that it to be transmitted.
** \param len Number of bytes that are to be transmitted.
** \return none.
**
****************************************************************************************/
void MbRtuTransmitPacket(blt_int8u *data, blt_int8u len)
{
blt_int16u data_index;
blt_int16u checksum;
blt_bool endOfPacket = BLT_FALSE;
/* Made static to lower stack load and +5 for Modbus RTU packet overhead. */
static blt_int8u txPacket[BOOT_COM_MBRTU_TX_MAX_DATA + 5];
/* On Modbus RTU, there must always be a T3_5 time separation between packet trans-
* missions.
*
* This bootloader uses XCP packets embedded in Modbus RTU packets. The XCP
* communication is always request / response based. That means that this packet is
* a response packet and it will only be sent, after the reception of a request packet.
*
* A response packet is only deemed valid, after the T3_5 idle time. This module
* implements the T3_5 end-of-packet time event detection. Consequently, it is already
* guaranteed that there is T3_5 between subsequent packet transmissions. As such, no
* further T3_5 wait time is needed here.
*/
/* verify validity of the len-parameter */
ASSERT_RT(len <= BOOT_COM_MBRTU_TX_MAX_DATA);
/* construct the Modbus RTU packet. start by adding the slave address. */
txPacket[0] = BOOT_COM_MBRTU_NODE_ID;
/* add the user-defined function code for embedding XCP packets. */
txPacket[1] = BOOT_COM_MBRTU_FCT_CODE_USER_XCP;
/* add the XCP packet length. */
txPacket[2] = len;
/* copy the XCP packet data. */
CpuMemCopy((blt_int32u)&txPacket[3], (blt_int32u)data, len);
/* calculate the checksum for the packet, including slave address, function code and
* extra XCP length.
*/
checksum = MbRtuCrcCalculate(&txPacket[0], len + 3);
/* add the checksum at the end of the packet */
txPacket[len + 3] = (blt_int8u)(checksum & 0xff);
txPacket[len + 4] = (blt_int8u)(checksum >> 8);
/* enable the driver output to be able to send. just make sure to wait a little around
* the togglng of the DE/NRE pin.
*/
MbRtuDelay(BOOT_COM_MBRTU_DRIVER_OUTPUT_ENABLE_DELAY_US);
MbRtuDriverOutputControlHook(BLT_TRUE);
MbRtuDelay(BOOT_COM_MBRTU_DRIVER_OUTPUT_ENABLE_DELAY_US);
/* transmit all the packet bytes one-by-one */
for (data_index = 0; data_index < (len + 5); data_index++)
{
/* keep the watchdog happy */
CopService();
/* last byte of the packet? */
if (data_index == ((len + 5) - 1))
{
/* update the end of packet flag. */
endOfPacket = BLT_TRUE;
}
/* write byte */
MbRtuTransmitByte(txPacket[data_index], endOfPacket);
}
/* enable the receiver output to be able to receive again. just make sure to wait a
* little around the togglng of the DE/NRE pin.
*/
MbRtuDelay(BOOT_COM_MBRTU_DRIVER_OUTPUT_DISABLE_DELAY_US);
MbRtuDriverOutputControlHook(BLT_FALSE);
MbRtuDelay(BOOT_COM_MBRTU_DRIVER_OUTPUT_DISABLE_DELAY_US);
} /*** end of MbRtuTransmitPacket ***/
/************************************************************************************//**
** \brief Receives a communication interface packet if one is present.
** \param data Pointer to byte array where the data is to be stored.
** \param len Pointer where the length of the packet is to be stored.
** \return BLT_TRUE if a packet was received, BLT_FALSE otherwise.
**
****************************************************************************************/
blt_bool MbRtuReceivePacket(blt_int8u *data, blt_int8u *len)
{
blt_bool result = BLT_FALSE;
blt_int8u rxByte;
blt_int16u currentTimeTicks;
blt_int16u deltaTimeTicks;
blt_int16u checksumCalculated;
blt_int16u checksumReceived;
/* Made static to lower stack load and +5 for Modbus RTU packet overhead. */
static blt_int8u rxPacket[BOOT_COM_MBRTU_RX_MAX_DATA + 5];
static blt_int8u rxLength = 0;
static blt_bool packetRxInProgress = BLT_FALSE;
static blt_int16u lastRxByteTimeTicks = 0;
/* get the current value of the free running counter. */
currentTimeTicks = MbRtuFreeRunningCounterGet();
/* check for a newly received byte. */
if (MbRtuReceiveByte(&rxByte) == BLT_TRUE)
{
/* store the time at which the byte was received. */
lastRxByteTimeTicks = currentTimeTicks;
/* is this the potential start of a new packet? */
if (packetRxInProgress == BLT_FALSE)
{
/* initialize the reception of a new packet. */
rxLength = 0;
packetRxInProgress = BLT_TRUE;
}
/* store the newly received byte in the buffer, with buffer overrun protection. */
if (rxLength < (sizeof(rxPacket)/sizeof(rxPacket[0])))
{
rxPacket[rxLength] = rxByte;
rxLength++;
}
/* buffer overrun occurred. received packet was longer than supported so discard
* the packet to try and sync to the next one.
*/
else
{
/* discard the partially received packet. */
packetRxInProgress = BLT_FALSE;
}
}
/* only attempt to detect the end of packet, when a reception is in progress. */
if (packetRxInProgress == BLT_TRUE)
{
/* calculate the number of ticks that elapsed since the last byte reception. note
* that this calculation works, even if the free running counter overflowed.
*/
deltaTimeTicks = currentTimeTicks - lastRxByteTimeTicks;
/* packet reception is assumed complete after T3_5 of not receiving new data. */
if (deltaTimeTicks >= mbRtuT3_5Ticks)
{
/* a Modbus RTU packet consists of at least the address field, function code and
* 16-bit CRC. Validate the packet length based on this info.
*/
if (rxLength >= 4)
{
/* calculate the packet checksum. */
checksumCalculated = MbRtuCrcCalculate(&rxPacket[0], rxLength - 2);
/* extract the checksum received with the packet. */
checksumReceived = rxPacket[rxLength - 2] | (rxPacket[rxLength - 1] << 8);
/* only continue with packet processing if the checksums match. */
if (checksumCalculated == checksumReceived)
{
/* we are only interested in Modbus RTU packets that are addressed to us and
* have an XCP packet embedded.
*/
if ( (rxPacket[0] == BOOT_COM_MBRTU_NODE_ID) &&
(rxPacket[1] == BOOT_COM_MBRTU_FCT_CODE_USER_XCP) )
{
/* An XCP packet embedded in a Modbus RTU packet has an extra XCP packet
* length value. Use it to double-check that the packet length is valid.
*/
if (rxPacket[2] == (rxLength - 5))
{
/* copy the packet's XCP data. */
CpuMemCopy((blt_int32u)data, (blt_int32u)&rxPacket[3], rxLength - 5);
/* set the packet's XCP length. */
*len = rxLength - 5;
/* update the result to success to indicate that this XCP packet is ready
* for processing.
*/
result = BLT_TRUE;
}
}
}
}
/* reset the packet reception in progress flag, to be able to receive the next. */
packetRxInProgress = BLT_FALSE;
}
}
/* give the result back to the caller. */
return result;
} /*** end of MbRtuReceivePacket ***/
/************************************************************************************//**
** \brief Receives a communication interface byte if one is present.
** \param data Pointer to byte where the data is to be stored.
** \return BLT_TRUE if a byte was received, BLT_FALSE otherwise.
**
****************************************************************************************/
static blt_bool MbRtuReceiveByte(blt_int8u *data)
{
blt_bool result = BLT_FALSE;
blt_int16u data_and_status;
/* check to see if a new byte was received */
if ((LEUART1->IF & LEUART_IF_RXDATAV) != 0)
{
/* update the result */
result = BLT_TRUE;
/* read out the newly received data, including its reception status flags. */
data_and_status = LEUART_RxExt(LEUART1);
/* check for a frame error. the frame error check is important because it can detect
* a missing stopbit. on an RS485 bus without bias resistors, the A-B differential
* voltage is 0. for an RS485 transceiver this is neither a 0 nor a 1 bit, so
* undefined. most RS485 transceivers feature a reception failsafe function to drive
* the Rx output (going to the UART Rx) to a defined state of logic 1. in case the
* used RS485 transceiver doesn't have such a feature, it typically leaves the Rx
* output in a logic 0 state. this means that after the stop bit of the last packet
* byte, the UART Rx input sees a logic 0, and assumes it is a start bit. the
* remaining data bits will always be 0 and, most importantly no stop bit is
* present, causing a framing error. Long story short: if you don't check for the
* framing error flag, you might receive an extra byte with value 0, which is not
* actually transmitted on the RS485 bus. you can catch and ignore this byte by doing
* a frame error check.
*/
if ((data_and_status & USART_RXDATAX_FERR) != 0U)
{
/* ignore the byte because of a detected frame error. */
result = BLT_FALSE;
}
#if (BOOT_COM_MBRTU_PARITY > 0)
/* check for a parity error. */
if ((data_and_status & USART_RXDATAX_PERR) != 0U)
{
/* ignore the byte because of a detected parity error. */
result = BLT_FALSE;
}
#endif
/* store the newly received byte by casting it to exclude the status flags. */
*data = (blt_int8u)data_and_status;
}
/* give the result back to the caller */
return result;
} /*** end of MbRtuReceiveByte ***/
/************************************************************************************//**
** \brief Transmits a communication interface byte.
** \param data Value of byte that is to be transmitted.
** \param end_of_packet BLT_TRUE if this is the last byte of the packet, BLT_FALSE
** otherwise.
** \return none.
**
****************************************************************************************/
static void MbRtuTransmitByte(blt_int8u data, blt_bool end_of_packet)
{
blt_int32u timeout;
/* write byte to transmit holding register */
LEUART_Tx(LEUART1, data);
/* set timeout time to wait for transmit completion. */
timeout = TimerGet() + MBRTU_BYTE_TX_TIMEOUT_MS;
/* not the last byte of the packet? */
if (end_of_packet == BLT_FALSE)
{
/* wait for tx holding register to be empty */
while ((LEUART1->STATUS & LEUART_STATUS_TXBL) == 0)
{
/* keep the watchdog happy. */
CopService();
/* break loop upon timeout. this would indicate a hardware failure. */
if (TimerGet() > timeout)
{
break;
}
}
}
/* this is the last byte of a packet. */
else
{
/* wait for tx complete flag to be set. this is needed for the last byte, otherwise
* the transceiver's transmit output gets disabled with
* MbRtuDriverOutputControlHook() before the byte reception completes.
*/
while ((LEUART1->STATUS & LEUART_STATUS_TXC) == 0)
{
/* keep the watchdog happy. */
CopService();
/* break loop upon timeout. this would indicate a hardware failure. */
if (TimerGet() > timeout)
{
break;
}
}
}
} /*** end of MbRtuTransmitByte ***/
/************************************************************************************//**
** \brief Obtains the counter value of the 100 kHz free running counter. Note that
** each count represent 10 us. The Modbus RTU communication module uses this
** free running counter for Modbus RTU packet timing related purposes. The
** already available 1 ms timer does not have the needed resolution for this
** purpose.
** \return Current value of the free running counter.
**
****************************************************************************************/
blt_int16u MbRtuFreeRunningCounterGet(void)
{
static blt_bool initialized = BLT_FALSE;
static blt_int32u counts_per_ten_us = 0;
static blt_int32u free_running_counter_last = 0;
static blt_int16u ten_us_tick_counter = 0;
blt_int32u free_running_counter_now;
blt_int32u delta_counts;
blt_int32u ten_us_ticks;
/* perform one-time initialization.*/
if (initialized == BLT_FALSE)
{
/* set the flag to make sure that this part only runs once. */
initialized = BLT_TRUE;
/* calculate how many counts of the SysTick's free running counter equals 10us,
* because one count of a 100 kHz counter equals that. Note that the timer module
* already initialized and enable the SysTick.
*/
counts_per_ten_us = SystemCoreClockGet() / 100000UL;
/* initialize current value of the timer's free running counter. */
free_running_counter_last = (SysTick->VAL & SysTick_VAL_CURRENT_Msk);
}
/* get the current value of the free running counter. */
free_running_counter_now = (SysTick->VAL & SysTick_VAL_CURRENT_Msk);
/* Calculate the number of counts that passed since the detection of the last
* millisecond event. Keep in mind that the SysTick has a down-counting 24-bit free
* running counter. Note that this calculation also works, in case the free running
* counter overflowed, thanks to integer math.
*/
delta_counts = free_running_counter_last - free_running_counter_now;
delta_counts &= SysTick_VAL_CURRENT_Msk;
/* did one or more ten microsecond counts pass since the last event? */
if (delta_counts >= counts_per_ten_us)
{
/* calculate how many ten microsecond counts passed. */
ten_us_ticks = delta_counts / counts_per_ten_us;
/* update the counter. */
ten_us_tick_counter += ten_us_ticks;
/* store the counter value of the last event to detect the next one. */
free_running_counter_last -= (ten_us_ticks * counts_per_ten_us);
free_running_counter_last &= SysTick_VAL_CURRENT_Msk;
}
/* return the current value of the 100 kHz free running counter to the caller. */
return ten_us_tick_counter;
} /*** end of MbRtuFreeRunningCounterGet ***/
#endif /* BOOT_COM_MBRTU_ENABLE > 0 */
/*********************************** end of mbrtu.c ************************************/

4
Target/Source/ARMCM3_EFM32/rs232.c
View File

@ -30,13 +30,13 @@
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
#if (BOOT_COM_RS232_ENABLE > 0)
#include "efm32.h"
#include "efm32_cmu.h"
#include "efm32_gpio.h"
#include "efm32_leuart.h"
#if (BOOT_COM_RS232_ENABLE > 0)
/****************************************************************************************
* Macro definitions
****************************************************************************************/
@ -205,7 +205,7 @@ static blt_bool Rs232ReceiveByte(blt_int8u *data)
{
blt_bool result = BLT_FALSE;
/* check to see if a new bytes was received */
/* check to see if a new byte was received */
if ((LEUART1->IF & LEUART_IF_RXDATAV) != 0)
{
/* store the received data byte and set return value to positive */

89
Target/Source/ARMCM3_EFM32/timer.c
View File

@ -30,29 +30,7 @@
* Include files
****************************************************************************************/
#include "boot.h" /* bootloader generic header */
/****************************************************************************************
* Type definitions
****************************************************************************************/
/** \brief Systick registers. */
typedef struct
{
volatile blt_int32u CTRL; /**< SysTick Control and Status Register */
volatile blt_int32u LOAD; /**< SysTick Reload Value Register */
volatile blt_int32u VAL; /**< SysTick Current Value Register */
} tSysTickRegs;
/****************************************************************************************
* Macro definitions
****************************************************************************************/
/** \brief CLKSOURCE bit of the system tick. */
#define SYSTICK_BIT_CLKSOURCE ((blt_int32u)0x00000004)
/** \brief ENABLE bit of the system tick. */
#define SYSTICK_BIT_ENABLE ((blt_int32u)0x00000001)
/** \brief COUNTERFLAG bit of the system tick. */
#define SYSTICK_BIT_COUNTERFLAG ((blt_int32u)0x00010000)
#include "efm32.h"
/****************************************************************************************
@ -63,12 +41,13 @@ typedef struct
*/
static blt_int32u millisecond_counter;
/** \brief Buffer for storing the last value of the free running counter. */
static blt_int32u free_running_counter_last;
/****************************************************************************************
* Register definitions
****************************************************************************************/
/** \brief Macro to access the system tick registers. */
#define SYSTICK ((tSysTickRegs *) (blt_int32u)0xE000E010)
/** \brief Stores the number of counts of the free running counter that equals one
* millisecond.
*/
static blt_int32u counts_per_millisecond;
/************************************************************************************//**
@ -78,16 +57,19 @@ static blt_int32u millisecond_counter;
****************************************************************************************/
void TimerInit(void)
{
/* reset the timer configuration */
/* Reset the timer configuration. */
TimerReset();
/* configure the systick frequency as a 1 ms event generator */
SYSTICK->LOAD = BOOT_CPU_SYSTEM_SPEED_KHZ - 1;
/* reset the current counter value */
SYSTICK->VAL = 0;
/* select core clock as source and enable the timer */
SYSTICK->CTRL = SYSTICK_BIT_CLKSOURCE | SYSTICK_BIT_ENABLE;
/* reset the millisecond counter value */
/* Configure the reload value such that the full 24-bit range is used. */
SysTick->LOAD = (0xFFFFFFFFUL & SysTick_LOAD_RELOAD_Msk);
/* Reset the current counter value. */
SysTick->VAL = 0UL;
/* Select core clock as source and enable the timer. */
SysTick->CTRL = SysTick_CTRL_ENABLE_Msk | SysTick_CTRL_CLKSOURCE_Msk;
/* Calculate how many counts equal 1 millisecond. */
counts_per_millisecond = SystemCoreClockGet() / 1000U;
/* Initialize remaining locals. */
millisecond_counter = 0;
free_running_counter_last = (SysTick->VAL & SysTick_VAL_CURRENT_Msk);
} /*** end of TimerInit ***/
@ -100,10 +82,10 @@ void TimerInit(void)
void TimerReset(void)
{
/* set the systick's registers back into the default reset value */
SYSTICK->CTRL = 0;
SYSTICK->LOAD = 0;
SYSTICK->VAL = 0;
} /* end of TimerReset */
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;
} /*** end of TimerReset ***/
/************************************************************************************//**
@ -113,11 +95,30 @@ void TimerReset(void)
****************************************************************************************/
void TimerUpdate(void)
{
/* check if the millisecond event occurred */
if ((SYSTICK->CTRL & SYSTICK_BIT_COUNTERFLAG) != 0)
blt_int32u free_running_counter_now;
blt_int32u delta_counts;
blt_int32u ms_counts;
/* Get the current value of the free running counter. */
free_running_counter_now = (SysTick->VAL & SysTick_VAL_CURRENT_Msk);
/* Calculate the number of counts that passed since the detection of the last
* millisecond event. Keep in mind that the SysTick has a down-counting 24-bit free
* running counter. Note that this calculation also works, in case the free running
* counter overflowed, thanks to integer math.
*/
delta_counts = free_running_counter_last - free_running_counter_now;
delta_counts &= SysTick_VAL_CURRENT_Msk;
/* Did one or more milliseconds pass since the last event? */
if (delta_counts >= counts_per_millisecond)
{
/* increment the millisecond counter */
millisecond_counter++;
/* Calculate how many milliseconds passed. */
ms_counts = delta_counts / counts_per_millisecond;
/* Update the millisecond counter. */
millisecond_counter += ms_counts;
/* Store the counter value of the last millisecond event, to detect the next one. */
free_running_counter_last -= (ms_counts * counts_per_millisecond);
free_running_counter_last &= SysTick_VAL_CURRENT_Msk;
}
} /*** end of TimerUpdate ***/