Add spidev test code
This commit is contained in:
parent
fed13089ed
commit
50e222e148
5 changed files with 420 additions and 0 deletions
62
spidev/.cproject
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62
spidev/.cproject
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage">
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<storageModule moduleId="org.eclipse.cdt.core.settings">
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<cconfiguration id="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931">
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<storageModule buildSystemId="org.eclipse.cdt.managedbuilder.core.configurationDataProvider" id="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931" moduleId="org.eclipse.cdt.core.settings" name="Debug">
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<externalSettings/>
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<extensions>
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<extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/>
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<extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
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<extension id="org.eclipse.cdt.core.GmakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
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<extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
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<extension id="org.eclipse.cdt.core.CWDLocator" point="org.eclipse.cdt.core.ErrorParser"/>
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<extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/>
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</extensions>
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</storageModule>
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<storageModule moduleId="cdtBuildSystem" version="4.0.0">
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<configuration artifactName="${ProjName}" buildArtefactType="org.eclipse.cdt.build.core.buildArtefactType.exe" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=org.eclipse.cdt.build.core.buildArtefactType.exe,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" cleanCommand="rm -rf" description="" id="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931" name="Debug" parent="cdt.managedbuild.config.gnu.cross.exe.debug">
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<folderInfo id="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931." name="/" resourcePath="">
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<toolChain id="cdt.managedbuild.toolchain.gnu.cross.exe.debug.1472090693" name="Cross GCC" superClass="cdt.managedbuild.toolchain.gnu.cross.exe.debug">
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<targetPlatform archList="all" binaryParser="org.eclipse.cdt.core.ELF" id="cdt.managedbuild.targetPlatform.gnu.cross.562460389" isAbstract="false" osList="all" superClass="cdt.managedbuild.targetPlatform.gnu.cross"/>
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<builder buildPath="${workspace_loc:/spidev}/Debug" id="cdt.managedbuild.builder.gnu.cross.1536364251" keepEnvironmentInBuildfile="false" managedBuildOn="true" name="Gnu Make Builder" superClass="cdt.managedbuild.builder.gnu.cross"/>
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<tool command="${CC}" id="cdt.managedbuild.tool.gnu.cross.c.compiler.1140488043" name="Cross GCC Compiler" superClass="cdt.managedbuild.tool.gnu.cross.c.compiler">
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<option defaultValue="gnu.c.optimization.level.none" id="gnu.c.compiler.option.optimization.level.744377043" name="Optimization Level" superClass="gnu.c.compiler.option.optimization.level" useByScannerDiscovery="false" valueType="enumerated"/>
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<option id="gnu.c.compiler.option.debugging.level.1800123348" name="Debug Level" superClass="gnu.c.compiler.option.debugging.level" useByScannerDiscovery="false" value="gnu.c.debugging.level.max" valueType="enumerated"/>
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<option id="gnu.c.compiler.option.misc.other.1422741348" name="Other flags" superClass="gnu.c.compiler.option.misc.other" useByScannerDiscovery="false" value="${CFLAGS} -c --sysroot=/usr/local/oecore-x86_64/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/" valueType="string"/>
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<inputType id="cdt.managedbuild.tool.gnu.c.compiler.input.842172031" superClass="cdt.managedbuild.tool.gnu.c.compiler.input"/>
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</tool>
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<tool id="cdt.managedbuild.tool.gnu.cross.cpp.compiler.827354942" name="Cross G++ Compiler" superClass="cdt.managedbuild.tool.gnu.cross.cpp.compiler">
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<option id="gnu.cpp.compiler.option.optimization.level.1610034131" name="Optimization Level" superClass="gnu.cpp.compiler.option.optimization.level" useByScannerDiscovery="false" value="gnu.cpp.compiler.optimization.level.none" valueType="enumerated"/>
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<option id="gnu.cpp.compiler.option.debugging.level.1214367730" name="Debug Level" superClass="gnu.cpp.compiler.option.debugging.level" useByScannerDiscovery="false" value="gnu.cpp.compiler.debugging.level.max" valueType="enumerated"/>
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</tool>
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<tool command="${CC}" id="cdt.managedbuild.tool.gnu.cross.c.linker.682022994" name="Cross GCC Linker" superClass="cdt.managedbuild.tool.gnu.cross.c.linker">
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<inputType id="cdt.managedbuild.tool.gnu.c.linker.input.1289364910" superClass="cdt.managedbuild.tool.gnu.c.linker.input">
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<additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/>
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<additionalInput kind="additionalinput" paths="$(LIBS)"/>
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</inputType>
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</tool>
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<tool id="cdt.managedbuild.tool.gnu.cross.cpp.linker.978271860" name="Cross G++ Linker" superClass="cdt.managedbuild.tool.gnu.cross.cpp.linker"/>
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<tool id="cdt.managedbuild.tool.gnu.cross.archiver.1262471130" name="Cross GCC Archiver" superClass="cdt.managedbuild.tool.gnu.cross.archiver"/>
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<tool command="${AS}" id="cdt.managedbuild.tool.gnu.cross.assembler.1266404792" name="Cross GCC Assembler" superClass="cdt.managedbuild.tool.gnu.cross.assembler">
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<inputType id="cdt.managedbuild.tool.gnu.assembler.input.743736531" superClass="cdt.managedbuild.tool.gnu.assembler.input"/>
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</tool>
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</toolChain>
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</folderInfo>
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</configuration>
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</storageModule>
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<storageModule moduleId="org.eclipse.cdt.core.externalSettings"/>
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</cconfiguration>
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</storageModule>
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<storageModule moduleId="cdtBuildSystem" version="4.0.0">
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<project id="spidev.cdt.managedbuild.target.gnu.cross.exe.395152977" name="Executable" projectType="cdt.managedbuild.target.gnu.cross.exe"/>
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</storageModule>
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<storageModule moduleId="scannerConfiguration">
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<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
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<scannerConfigBuildInfo instanceId="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931;cdt.managedbuild.config.gnu.cross.exe.debug.2036029931.;cdt.managedbuild.tool.gnu.cross.c.compiler.1140488043;cdt.managedbuild.tool.gnu.c.compiler.input.842172031">
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<autodiscovery enabled="true" problemReportingEnabled="true" selectedProfileId=""/>
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</scannerConfigBuildInfo>
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</storageModule>
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<storageModule moduleId="org.eclipse.cdt.core.LanguageSettingsProviders"/>
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<storageModule moduleId="refreshScope"/>
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<storageModule moduleId="org.eclipse.cdt.make.core.buildtargets"/>
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</cproject>
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1
spidev/.gitignore
vendored
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1
spidev/.gitignore
vendored
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@ -0,0 +1 @@
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/Debug/
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26
spidev/.project
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26
spidev/.project
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@ -0,0 +1,26 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>spidev</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
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<triggers>clean,full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
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<triggers>full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.cdt.core.cnature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
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</natures>
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</projectDescription>
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14
spidev/.settings/language.settings.xml
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14
spidev/.settings/language.settings.xml
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@ -0,0 +1,14 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<project>
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<configuration id="cdt.managedbuild.config.gnu.cross.exe.debug.2036029931" name="Debug">
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<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
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<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
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<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
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<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
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<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="643270697067650404" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD "${INPUTS}"" prefer-non-shared="true">
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<language-scope id="org.eclipse.cdt.core.gcc"/>
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<language-scope id="org.eclipse.cdt.core.g++"/>
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</provider>
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</extension>
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</configuration>
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</project>
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317
spidev/spidev.c
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317
spidev/spidev.c
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@ -0,0 +1,317 @@
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/*
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* SPI testing utility (using spidev driver)
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*
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* Copyright (c) 2007 MontaVista Software, Inc.
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* Copyright (c) 2007 Anton Vorontsov <avorontsov@ru.mvista.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License.
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*
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*/
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#include <stdint.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <linux/types.h>
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#include <linux/spi/spidev.h>
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#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
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static void pabort(const char *s)
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{
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perror(s);
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abort();
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}
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static const char *device = "/dev/spidev1.1";
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static uint32_t mode;
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static uint8_t bits = 8;
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static uint32_t speed = 500000;
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static uint16_t delay;
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static int verbose;
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uint8_t default_tx[] = {
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
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0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
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0x0c, 0x0d, 0x0e, 0x0F, 0x10, 0x1a,
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0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
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0x21, 0x22, 0x23, 0x24, 0x25, 0x26,
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0x27, 0x28,
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};
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uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, };
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char *input_tx;
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static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix)
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{
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int i = 0;
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const unsigned char *address = src;
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const unsigned char *line = address;
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unsigned char c;
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printf("%s | ", prefix);
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while (length-- > 0) {
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printf("%02X ", *address++);
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if (!(++i % line_size) || (length == 0 && i % line_size)) {
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if (length == 0) {
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while (i++ % line_size)
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printf("__ ");
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}
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printf(" | "); /* right close */
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while (line < address) {
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c = *line++;
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printf("%c", (c < 33 || c == 255) ? 0x2E : c);
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}
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printf("\n");
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if (length > 0)
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printf("%s | ", prefix);
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}
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}
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}
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/*
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* Unescape - process hexadecimal escape character
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* converts shell input "\x23" -> 0x23
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*/
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static int unescape(char *_dst, char *_src, size_t len)
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{
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int ret = 0;
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char *src = _src;
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char *dst = _dst;
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unsigned int ch;
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while (*src) {
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if (*src == '\\' && *(src+1) == 'x') {
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sscanf(src + 2, "%2x", &ch);
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src += 4;
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*dst++ = (unsigned char)ch;
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} else {
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*dst++ = *src++;
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}
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ret++;
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}
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return ret;
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}
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static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
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{
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int ret;
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struct spi_ioc_transfer tr = {
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.tx_buf = (unsigned long)tx,
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.rx_buf = (unsigned long)rx,
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.len = len,
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.delay_usecs = delay,
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.speed_hz = speed,
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.bits_per_word = bits,
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};
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if (mode & SPI_TX_QUAD)
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tr.tx_nbits = 4;
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else if (mode & SPI_TX_DUAL)
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tr.tx_nbits = 2;
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if (mode & SPI_RX_QUAD)
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tr.rx_nbits = 4;
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else if (mode & SPI_RX_DUAL)
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tr.rx_nbits = 2;
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if (!(mode & SPI_LOOP)) {
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if (mode & (SPI_TX_QUAD | SPI_TX_DUAL))
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tr.rx_buf = 0;
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else if (mode & (SPI_RX_QUAD | SPI_RX_DUAL))
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tr.tx_buf = 0;
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}
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ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr);
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if (ret < 1)
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pabort("can't send spi message");
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if (verbose)
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hex_dump(tx, len, 32, "TX");
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hex_dump(rx, len, 32, "RX");
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}
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static void print_usage(const char *prog)
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{
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printf("Usage: %s [-DsbdlHOLC3]\n", prog);
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puts(" -D --device device to use (default /dev/spidev1.1)\n"
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" -s --speed max speed (Hz)\n"
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" -d --delay delay (usec)\n"
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" -b --bpw bits per word \n"
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" -l --loop loopback\n"
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" -H --cpha clock phase\n"
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" -O --cpol clock polarity\n"
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" -L --lsb least significant bit first\n"
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" -C --cs-high chip select active high\n"
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" -3 --3wire SI/SO signals shared\n"
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" -v --verbose Verbose (show tx buffer)\n"
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" -p Send data (e.g. \"1234\\xde\\xad\")\n"
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" -N --no-cs no chip select\n"
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" -R --ready slave pulls low to pause\n"
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" -2 --dual dual transfer\n"
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" -4 --quad quad transfer\n");
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exit(1);
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}
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static void parse_opts(int argc, char *argv[])
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{
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while (1) {
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static const struct option lopts[] = {
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{ "device", 1, 0, 'D' },
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{ "speed", 1, 0, 's' },
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{ "delay", 1, 0, 'd' },
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{ "bpw", 1, 0, 'b' },
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{ "loop", 0, 0, 'l' },
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{ "cpha", 0, 0, 'H' },
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{ "cpol", 0, 0, 'O' },
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{ "lsb", 0, 0, 'L' },
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{ "cs-high", 0, 0, 'C' },
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{ "3wire", 0, 0, '3' },
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{ "no-cs", 0, 0, 'N' },
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{ "ready", 0, 0, 'R' },
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{ "dual", 0, 0, '2' },
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{ "verbose", 0, 0, 'v' },
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{ "quad", 0, 0, '4' },
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{ NULL, 0, 0, 0 },
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};
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int c;
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c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", lopts, NULL);
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|
||||||
|
if (c == -1)
|
||||||
|
break;
|
||||||
|
|
||||||
|
switch (c) {
|
||||||
|
case 'D':
|
||||||
|
device = optarg;
|
||||||
|
break;
|
||||||
|
case 's':
|
||||||
|
speed = atoi(optarg);
|
||||||
|
break;
|
||||||
|
case 'd':
|
||||||
|
delay = atoi(optarg);
|
||||||
|
break;
|
||||||
|
case 'b':
|
||||||
|
bits = atoi(optarg);
|
||||||
|
break;
|
||||||
|
case 'l':
|
||||||
|
mode |= SPI_LOOP;
|
||||||
|
break;
|
||||||
|
case 'H':
|
||||||
|
mode |= SPI_CPHA;
|
||||||
|
break;
|
||||||
|
case 'O':
|
||||||
|
mode |= SPI_CPOL;
|
||||||
|
break;
|
||||||
|
case 'L':
|
||||||
|
mode |= SPI_LSB_FIRST;
|
||||||
|
break;
|
||||||
|
case 'C':
|
||||||
|
mode |= SPI_CS_HIGH;
|
||||||
|
break;
|
||||||
|
case '3':
|
||||||
|
mode |= SPI_3WIRE;
|
||||||
|
break;
|
||||||
|
case 'N':
|
||||||
|
mode |= SPI_NO_CS;
|
||||||
|
break;
|
||||||
|
case 'v':
|
||||||
|
verbose = 1;
|
||||||
|
break;
|
||||||
|
case 'R':
|
||||||
|
mode |= SPI_READY;
|
||||||
|
break;
|
||||||
|
case 'p':
|
||||||
|
input_tx = optarg;
|
||||||
|
break;
|
||||||
|
case '2':
|
||||||
|
mode |= SPI_TX_DUAL;
|
||||||
|
break;
|
||||||
|
case '4':
|
||||||
|
mode |= SPI_TX_QUAD;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
print_usage(argv[0]);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (mode & SPI_LOOP) {
|
||||||
|
if (mode & SPI_TX_DUAL)
|
||||||
|
mode |= SPI_RX_DUAL;
|
||||||
|
if (mode & SPI_TX_QUAD)
|
||||||
|
mode |= SPI_RX_QUAD;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int main(int argc, char *argv[])
|
||||||
|
{
|
||||||
|
int ret = 0;
|
||||||
|
int fd;
|
||||||
|
uint8_t *tx;
|
||||||
|
uint8_t *rx;
|
||||||
|
int size;
|
||||||
|
|
||||||
|
parse_opts(argc, argv);
|
||||||
|
|
||||||
|
fd = open(device, O_RDWR);
|
||||||
|
if (fd < 0)
|
||||||
|
pabort("can't open device");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* spi mode
|
||||||
|
*/
|
||||||
|
ret = ioctl(fd, SPI_IOC_WR_MODE32, &mode);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't set spi mode");
|
||||||
|
|
||||||
|
ret = ioctl(fd, SPI_IOC_RD_MODE32, &mode);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't get spi mode");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* bits per word
|
||||||
|
*/
|
||||||
|
ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't set bits per word");
|
||||||
|
|
||||||
|
ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't get bits per word");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* max speed hz
|
||||||
|
*/
|
||||||
|
ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't set max speed hz");
|
||||||
|
|
||||||
|
ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed);
|
||||||
|
if (ret == -1)
|
||||||
|
pabort("can't get max speed hz");
|
||||||
|
|
||||||
|
printf("spi mode: 0x%x\n", mode);
|
||||||
|
printf("bits per word: %d\n", bits);
|
||||||
|
printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);
|
||||||
|
|
||||||
|
if (input_tx) {
|
||||||
|
size = strlen(input_tx+1);
|
||||||
|
tx = malloc(size);
|
||||||
|
rx = malloc(size);
|
||||||
|
size = unescape((char *)tx, input_tx, size);
|
||||||
|
transfer(fd, tx, rx, size);
|
||||||
|
free(rx);
|
||||||
|
free(tx);
|
||||||
|
} else {
|
||||||
|
transfer(fd, default_tx, default_rx, sizeof(default_tx));
|
||||||
|
}
|
||||||
|
|
||||||
|
close(fd);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue