Simulink Raspberry Pi - I2C Master Read error

Dear all,

I have been trying to read data from an external sensor using the "I2C Master Read" from the "Simulink Support Package for Raspberry Pi Hardware". I am using a very simple model with one I2C read block connected to a display block.

The following error is blocking me from using the I2C block, would appreciate your help?

Thank you

### Starting build procedure for model: Test_Receiver
### Generating code and artifacts to 'Model specific' folder structure
 Code Generation  1
Elapsed: 13 sec
### Generating code into build folder: C:\Users\M\D\E-U\Code\Playground\Test_Receiver_ert_rtw
### Invoking Target Language Compiler on Test_Receiver.rtw
### Using System Target File: C:\Program Files\MATLAB\R2017b\rtw\c\ert\ert.tlc
### Loading TLC function libraries
......
### Initial pass through model to cache user defined code
.
### Caching model source code
................................
### Writing header file Test_Receiver_types.h
### Writing header file Test_Receiver.h
### Writing source file Test_Receiver.c
### Writing header file Test_Receiver_private.h
### Writing header file rtwtypes.h
### Writing header file multiword_types.h
.
### Writing source file Test_Receiver_data.c
### Writing header file rtmodel.h
### Writing source file ert_main.c
### TLC code generation complete.
### Generating TLC interface API.
......
### Creating data type transition file Test_Receiver_dt.h
### Evaluating PostCodeGenCommand specified in the model
### Using toolchain: GNU GCC Raspberry Pi v1.0 | gmake (64-bit Windows)
### 'C:\Users\Moe\Desktop\e-UDIMU\Code\Playground\Test_Receiver_ert_rtw\Test_Receiver.mk' is up to date
### Building 'Test_Receiver': make  -f Test_Receiver.mk all
### Build procedure for model: 'Test_Receiver' aborted due to an error.
Error executing command "touch -c /home/pi/Test_Receiver_ert_rtw/*.*;make  -f Test_Receiver.mk all -C /home/pi/Test_Receiver_ert_rtw". Details:

STDERR: MW_I2C.c: In function ‘EXT_I2C_writeH’:
MW_I2C.c:141:24: error: storage size of ‘msg’ isn’t known
         struct i2c_msg msg;
                        ^~~
MW_I2C.c: In function ‘EXT_I2C_readH’:
MW_I2C.c:178:24: error: storage size of ‘msg’ isn’t known
         struct i2c_msg msg;
                        ^~~
MW_I2C.c:184:25: error: ‘I2C_M_RD’ undeclared (first use in this function)
             msg.flags = I2C_M_RD;
                         ^~~~~~~~
MW_I2C.c:184:25: note: each undeclared identifier is reported only once for each function it appears in
make: *** [MW_I2C.c.o] Error 1

STDOUT: make: Entering directory '/home/pi/Test_Receiver_ert_rtw'
gcc -c -MMD -MP -MF"MW_I2C.c.dep" -MT"MW_I2C.c.o" -O2  -DMODEL=Test_Receiver -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -DON_TARGET_WAIT_FOR_START=1 -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DARM_PROJECT -D_USE_TARGET_UDP_ -D_RUNONTARGETHARDWARE_BUILD_ -DSTACK_SIZE=64 -D__MW_TARGET_USE_HARDWARE_RESOURCES_H__ -DRT -DTERMFCN=1 -DONESTEPFCN=1 -DMAT_FILE=0 -DMULTI_INSTANCE_CODE=0 -DEXT_MODE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DTID01EQ=0 -DON_TARGET_WAIT_FOR_START=1 -DARM_PROJECT -D_USE_TARGET_UDP_ -D_RUNONTARGETHARDWARE_BUILD_ -DSTACK_SIZE=64 -DRT -DMODEL=Test_Receiver -DNUMST=1 -DNCSTATES=0 -DHAVESTDIO -I./ -o MW_I2C.c.o MW_I2C.c
Test_Receiver.mk:473: recipe for target 'MW_I2C.c.o' failed
make: Leaving directory '/home/pi/Test_Receiver_ert_rtw'

[Megh Doshi]

I'm having the same error, but with the beaglebone blue. Were you able to resolve this?

[Matej Kopecky]

I'm having the same error too, with the beaglebone blue. Were you able to resolve this?