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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| <?xml version="1.0" encoding="UTF-8" standalone="no"?> | ||
| <?fileVersion 4.0.0?><cproject storage_type_id="org.eclipse.cdt.core.XmlProjectDescriptionStorage"> | ||
| <storageModule moduleId="org.eclipse.cdt.core.settings"> | ||
| <cconfiguration id="de.innot.avreclipse.configuration.app.debug.1398186298"> | ||
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| <externalSettings/> | ||
| <extensions> | ||
| <extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/> | ||
| <extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| </extensions> | ||
| </storageModule> | ||
| <storageModule moduleId="cdtBuildSystem" version="4.0.0"> | ||
| <configuration artifactName="${ProjName}" buildArtefactType="de.innot.avreclipse.buildArtefactType.app" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=de.innot.avreclipse.buildArtefactType.app,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.debug" description="" id="de.innot.avreclipse.configuration.app.debug.1398186298" name="Debug" parent="de.innot.avreclipse.configuration.app.debug"> | ||
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| <builder buildPath="${workspace_loc:/I2C}/Debug" id="de.innot.avreclipse.target.builder.winavr.app.debug.1260963315" managedBuildOn="true" name="AVR GNU Make Builder.Debug" superClass="de.innot.avreclipse.target.builder.winavr.app.debug"/> | ||
| <tool id="de.innot.avreclipse.tool.assembler.winavr.app.debug.34985947" name="AVR Assembler" superClass="de.innot.avreclipse.tool.assembler.winavr.app.debug"> | ||
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| <externalSettings/> | ||
| <extensions> | ||
| <extension id="org.eclipse.cdt.core.ELF" point="org.eclipse.cdt.core.BinaryParser"/> | ||
| <extension id="org.eclipse.cdt.core.GASErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.GLDErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.MakeErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| <extension id="org.eclipse.cdt.core.GCCErrorParser" point="org.eclipse.cdt.core.ErrorParser"/> | ||
| </extensions> | ||
| </storageModule> | ||
| <storageModule moduleId="cdtBuildSystem" version="4.0.0"> | ||
| <configuration artifactName="${ProjName}" buildArtefactType="de.innot.avreclipse.buildArtefactType.app" buildProperties="org.eclipse.cdt.build.core.buildArtefactType=de.innot.avreclipse.buildArtefactType.app,org.eclipse.cdt.build.core.buildType=org.eclipse.cdt.build.core.buildType.release" description="" id="de.innot.avreclipse.configuration.app.release.1401385106" name="Release" parent="de.innot.avreclipse.configuration.app.release"> | ||
| <folderInfo id="de.innot.avreclipse.configuration.app.release.1401385106." name="/" resourcePath=""> | ||
| <toolChain id="de.innot.avreclipse.toolchain.winavr.app.release.2097903649" name="AVR-GCC Toolchain" superClass="de.innot.avreclipse.toolchain.winavr.app.release"> | ||
| <option id="de.innot.avreclipse.toolchain.options.toolchain.objcopy.flash.app.release.1525056151" name="Generate HEX file for Flash memory" superClass="de.innot.avreclipse.toolchain.options.toolchain.objcopy.flash.app.release"/> | ||
| <option id="de.innot.avreclipse.toolchain.options.toolchain.objcopy.eeprom.app.release.1912334197" name="Generate HEX file for EEPROM" superClass="de.innot.avreclipse.toolchain.options.toolchain.objcopy.eeprom.app.release"/> | ||
| <option id="de.innot.avreclipse.toolchain.options.toolchain.objdump.app.release.1529957291" name="Generate Extended Listing (Source + generated Assembler)" superClass="de.innot.avreclipse.toolchain.options.toolchain.objdump.app.release"/> | ||
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| <option id="de.innot.avreclipse.toolchain.options.toolchain.avrdude.app.release.1868669026" name="AVRDude" superClass="de.innot.avreclipse.toolchain.options.toolchain.avrdude.app.release"/> | ||
| <targetPlatform id="de.innot.avreclipse.targetplatform.winavr.app.release.1690791001" name="AVR Cross-Target" superClass="de.innot.avreclipse.targetplatform.winavr.app.release"/> | ||
| <builder buildPath="${workspace_loc:/I2C}/Release" id="de.innot.avreclipse.target.builder.winavr.app.release.2115842886" managedBuildOn="true" name="AVR GNU Make Builder.Release" superClass="de.innot.avreclipse.target.builder.winavr.app.release"/> | ||
| <tool id="de.innot.avreclipse.tool.assembler.winavr.app.release.557136347" name="AVR Assembler" superClass="de.innot.avreclipse.tool.assembler.winavr.app.release"> | ||
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| <tool id="de.innot.avreclipse.tool.compiler.winavr.app.release.664588425" name="AVR Compiler" superClass="de.innot.avreclipse.tool.compiler.winavr.app.release"> | ||
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| <inputType id="de.innot.avreclipse.compiler.winavr.input.876017914" name="C Source Files" superClass="de.innot.avreclipse.compiler.winavr.input"/> | ||
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| <tool id="de.innot.avreclipse.tool.cppcompiler.app.release.1368718099" name="AVR C++ Compiler" superClass="de.innot.avreclipse.tool.cppcompiler.app.release"> | ||
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| <tool id="de.innot.avreclipse.tool.linker.winavr.app.release.195756801" name="AVR C Linker" superClass="de.innot.avreclipse.tool.linker.winavr.app.release"> | ||
| <inputType id="de.innot.avreclipse.tool.linker.input.1870853237" name="OBJ Files" superClass="de.innot.avreclipse.tool.linker.input"> | ||
| <additionalInput kind="additionalinputdependency" paths="$(USER_OBJS)"/> | ||
| <additionalInput kind="additionalinput" paths="$(LIBS)"/> | ||
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| <tool id="de.innot.avreclipse.tool.avrdude.app.release.76194385" name="AVRDude" superClass="de.innot.avreclipse.tool.avrdude.app.release"/> | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <projectDescription> | ||
| <name>I2C</name> | ||
| <comment></comment> | ||
| <projects> | ||
| </projects> | ||
| <buildSpec> | ||
| <buildCommand> | ||
| <name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name> | ||
| <triggers>clean,full,incremental,</triggers> | ||
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| </arguments> | ||
| </buildCommand> | ||
| <buildCommand> | ||
| <name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name> | ||
| <triggers>full,incremental,</triggers> | ||
| <arguments> | ||
| </arguments> | ||
| </buildCommand> | ||
| </buildSpec> | ||
| <natures> | ||
| <nature>org.eclipse.cdt.core.cnature</nature> | ||
| <nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature> | ||
| <nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature> | ||
| <nature>de.innot.avreclipse.core.avrnature</nature> | ||
| </natures> | ||
| </projectDescription> |
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|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| avrtarget/ClockFrequency=1000000 | ||
| avrtarget/ExtRAMSize=0 | ||
| avrtarget/ExtendedRAM=false | ||
| avrtarget/MCUType=atmega32 | ||
| avrtarget/UseEEPROM=false | ||
| avrtarget/UseExtendedRAMforHeap=true | ||
| eclipse.preferences.version=1 |
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| @@ -0,0 +1,2 @@ | ||
| eclipse.preferences.version=1 | ||
| encoding/<project>=UTF-8 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /****************************************************************************** | ||
| * | ||
| * Module: TWI(I2C) | ||
| * File Name: twi.h | ||
| * Description: Source file for the TWI(I2C) AVR driver | ||
| * Author: Ibrahim Mohamed | ||
| * | ||
| *******************************************************************************/ | ||
|
|
||
| #include "twi.h" | ||
| #include "common_macros.h" | ||
| #include <avr/io.h> | ||
|
|
||
| void TWI_init(void) | ||
| { | ||
| /* Bit Rate: 400.000 kbps using zero pre-scaler TWPS=00 and F_CPU=8Mhz */ | ||
| TWBR = 0x02; | ||
| TWSR = 0x00; | ||
|
|
||
| /* Two Wire Bus address my address if any master device want to call me: 0x1 (used in case this MC is a slave device) | ||
| General Call Recognition: Off */ | ||
| TWAR = 0b00000010; // my address = 0x01 :) | ||
|
|
||
| TWCR = (1<<TWEN); /* enable TWI */ | ||
| } | ||
|
|
||
| void TWI_start(void) | ||
| { | ||
| /* | ||
| * Clear the TWINT flag before sending the start bit TWINT=1 | ||
| * send the start bit by TWSTA=1 | ||
| * Enable TWI Module TWEN=1 | ||
| */ | ||
| TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN); | ||
|
|
||
| /* Wait for TWINT flag set in TWCR Register (start bit is send successfully) */ | ||
| while(BIT_IS_CLEAR(TWCR,TWINT)); | ||
| } | ||
|
|
||
| void TWI_stop(void) | ||
| { | ||
| /* | ||
| * Clear the TWINT flag before sending the stop bit TWINT=1 | ||
| * send the stop bit by TWSTO=1 | ||
| * Enable TWI Module TWEN=1 | ||
| */ | ||
| TWCR = (1 << TWINT) | (1 << TWSTO) | (1 << TWEN); | ||
| } | ||
|
|
||
| void TWI_writeByte(uint8 data) | ||
| { | ||
| /* Put data On TWI data Register */ | ||
| TWDR = data; | ||
| /* | ||
| * Clear the TWINT flag before sending the data TWINT=1 | ||
| * Enable TWI Module TWEN=1 | ||
| */ | ||
| TWCR = (1 << TWINT) | (1 << TWEN); | ||
| /* Wait for TWINT flag set in TWCR Register(data is send successfully) */ | ||
| while(BIT_IS_CLEAR(TWCR,TWINT)); | ||
| } | ||
|
|
||
| uint8 TWI_readByteWithACK(void) | ||
| { | ||
| /* | ||
| * Clear the TWINT flag before reading the data TWINT=1 | ||
| * Enable sending ACK after reading or receiving data TWEA=1 | ||
| * Enable TWI Module TWEN=1 | ||
| */ | ||
| TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWEA); | ||
| /* Wait for TWINT flag set in TWCR Register (data received successfully) */ | ||
| while(BIT_IS_CLEAR(TWCR,TWINT)); | ||
| /* Read Data */ | ||
| return TWDR; | ||
| } | ||
|
|
||
| uint8 TWI_readByteWithNACK(void) | ||
| { | ||
| /* | ||
| * Clear the TWINT flag before reading the data TWINT=1 | ||
| * Enable TWI Module TWEN=1 | ||
| */ | ||
| TWCR = (1 << TWINT) | (1 << TWEN); | ||
| /* Wait for TWINT flag set in TWCR Register (data received successfully) */ | ||
| while(BIT_IS_CLEAR(TWCR,TWINT)); | ||
| /* Read Data */ | ||
| return TWDR; | ||
| } | ||
|
|
||
| uint8 TWI_getStatus(void) | ||
| { | ||
| uint8 status; | ||
| /* masking to eliminate first 3 bits and get the last 5 bits (status bits) */ | ||
| status = TWSR & 0xF8; | ||
| return status; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /****************************************************************************** | ||
| * | ||
| * Module: TWI(I2C) | ||
| * File Name: twi.h | ||
| * Description: Header file for the TWI(I2C) AVR driver | ||
| * Author: Ibrahim Mohamed | ||
| * | ||
| *******************************************************************************/ | ||
|
|
||
| #ifndef TWI_H_ | ||
| #define TWI_H_ | ||
|
|
||
| #include "std_types.h" | ||
|
|
||
| /******************************************************************************* | ||
| * Preprocessor Macros * | ||
| *******************************************************************************/ | ||
|
|
||
| /* I2C Status Bits in the TWSR Register */ | ||
| #define TWI_START 0x08 /* start has been sent */ | ||
| #define TWI_REP_START 0x10 /* repeated start */ | ||
| #define TWI_MT_SLA_W_ACK 0x18 /* Master transmit ( slave address + Write request ) to slave + ACK received from slave. */ | ||
| #define TWI_MT_SLA_R_ACK 0x40 /* Master transmit ( slave address + Read request ) to slave + ACK received from slave. */ | ||
| #define TWI_MT_DATA_ACK 0x28 /* Master transmit data and ACK has been received from Slave. */ | ||
| #define TWI_MR_DATA_ACK 0x50 /* Master received data and send ACK to slave. */ | ||
| #define TWI_MR_DATA_NACK 0x58 /* Master received data but doesn't send ACK to slave. */ | ||
|
|
||
| /******************************************************************************* | ||
| * Functions Prototypes * | ||
| *******************************************************************************/ | ||
| void TWI_init(void); | ||
| void TWI_start(void); | ||
| void TWI_stop(void); | ||
| void TWI_writeByte(uint8 data); | ||
| uint8 TWI_readByteWithACK(void); | ||
| uint8 TWI_readByteWithNACK(void); | ||
| uint8 TWI_getStatus(void); | ||
|
|
||
|
|
||
| #endif /* TWI_H_ */ |
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