Matlab and Ubuntu 20.04 in RaspberryPi4

Question

Silvia Della Torre on 8 Sep 2023

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https://in.mathworks.com/matlabcentral/answers/2018771-matlab-and-ubuntu-20-04-in-raspberrypi4

Edited: Walter Roberson on 11 Sep 2023

Hello, I'm trying to connect Matlab/Simulink (R2021b) with RaspberryPi4 (with Ubuntu 20.04). When I try to run a function in Matlab (the example function BlinkLED provided by Matlab support) this is the error:

>> blinkLED

### Updating Raspberry Pi I/O server...

### Connecting to board...

### Connected to 192.168.1.30...

### Installing nanomsg Library (this might take a while)...

### Creating server folder...

### Transferring source files...

### Building MATLAB I/O server...

Error using blinkLED (line 3)

Error executing command "make ONLY_MATLAB_IO=0 -C /opt/MATLAB/mw_server_v21.2.0 -f Makefile". Details:

STDERR: ide a declaration of ‘printf’

IO_wrapperCameraboard.c:67:39: warning: passing argument 1 of ‘EXT_CAMERABOARD_snapshot’ from incompatible pointer type

[-Wincompatible-pointer-types]

67 | status = EXT_CAMERABOARD_snapshot(&ts, data, &dataSize);

| ^~~

| |

| long long unsigned int *

In file included from IO_wrapperCameraboard.h:16,

from IO_wrapperCameraboard.c:10:

picam.h:18:40: note: expected ‘uint64_t *’ {aka ‘long unsigned int *’} but argument is of type ‘long long unsigned int *’

18 | int EXT_CAMERABOARD_snapshot(uint64_t *ts,uint8_T *data, uint32_T *dataSize);

| ~~~~~~~~~~^~

IO_wrapperCameraboard.c: In function ‘cameraboardControl’:

IO_wrapperCameraboard.c:95:19: warning: pointer targets in assignment from ‘uint8_T *’ {aka ‘unsigned char *’} to ‘char_T *’ {aka ‘char *’}

differ in signedness [-Wpointer-sign]

95 | controlParams = &payloadBufferRx[0];

| ^

IO_wrapperCameraboard.c:96:5: warning: incompatible implicit declaration of built-in function ‘printf’

96 | printf("REQUEST_CAMERABOARD_CONTROL: %s \n", controlParams);

| ^~~~~~

IO_wrapperCameraboard.c:96:5: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’

IO_wrapperCameraboard.c: In function ‘cameraboardTerminate’:

IO_wrapperCameraboard.c:118:5: warning: incompatible implicit declaration of built-in function ‘printf’

118 | printf("REQUEST_CAMERABOARD_TERMINATE \n");

| ^~~~~~

IO_wrapperCameraboard.c:118:5: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’

In file included from sharedServer.h:16,

from mw_wrapperCANChannel.h:16,

from mw_wrapperCANChannel.c:11:

mw_wrapperCANChannel.c: In function ‘canWrite’:

mw_wrapperCANChannel.c:18:23: warning: too many arguments for format [-Wformat-extra-args]

18 | LOG_PRINT(stdout, "REQUEST_CAN_WRITE: \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

mw_wrapperCANChannel.c:53:26: warning: too many arguments for format [-Wformat-extra-args]

53 | LOG_PRINT(stdout,"CANChannel: Write successful \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

mw_wrapperCANChannel.c:56:26: warning: too many arguments for format [-Wformat-extra-args]

56 | LOG_PRINT(stdout,"CANChannel: Write failed \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

mw_wrapperCANChannel.c: In function ‘canRead’:

mw_wrapperCANChannel.c:65:22: warning: too many arguments for format [-Wformat-extra-args]

65 | LOG_PRINT(stdout,"REQUEST_CAN_Read: \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

mw_wrapperCANChannel.c:98:26: warning: too many arguments for format [-Wformat-extra-args]

98 | LOG_PRINT(stdout,"CANChannel: Read successful \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

mw_wrapperCANChannel.c:100:26: warning: too many arguments for format [-Wformat-extra-args]

100 | LOG_PRINT(stdout,"CANChannel: Read failed \n",0);

| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

common.h:12:51: note: in definition of macro ‘LOG_PRINT’

12 | #define LOG_PRINT(fd, format, ...) fprintf(fd, format, __VA_ARGS__); fflush(fd)

| ^~~~~~

picam.c: In function ‘EXT_CAMERABOARD_init’:

picam.c:515:9: warning: unused variable ‘result’ [-Wunused-variable]

515 | int result = EXT_CAMERABOARD_terminate();

| ^~~~~~

IO_wrapperLED.c: In function ‘setLEDTrigger’:

IO_wrapperLED.c:54:13: warning: pointer targets in assignment from ‘uint8_T *’ {aka ‘unsigned char *’} to ‘char_T *’ {aka ‘char *’} differ in

signedness [-Wpointer-sign]

54 | trigger = &payloadBufferRx[index];

| ^

MW_digitalIO.c: In function ‘MW_digitalIO_open’:

MW_digitalIO.c:15:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

15 | return (MW_Handle_Type)pin;

| ^

MW_digitalIO.c: In function ‘MW_digitalIO_read’:

MW_digitalIO.c:23:19: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

23 | EXT_GPIO_read((unsigned int)DigitalIOPinHandle, &gpioValue); //TODO: Find a way to return the right status

| ^

MW_digitalIO.c: In function ‘MW_digitalIO_write’:

MW_digitalIO.c:31:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

31 | EXT_GPIO_write((unsigned int)DigitalIOPinHandle, value); //TODO: Find a way to return the right status

| ^

MW_digitalIO.c: In function ‘MW_digitalIO_close’:

MW_digitalIO.c:37:24: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

37 | EXT_GPIO_terminate((unsigned int)DigitalIOPinHandle); //TODO: Find a way to return the right status

| ^

In file included from IO_wrapperEncoder.h:16,

from customFunction.c:27:

MW_RaspiEncoder.h:9:10: fatal error: pigpio.h: No such file or directory

9 | #include <pigpio.h>

| ^~~~~~~~~~

compilation terminated.

make: *** [Makefile:79: obj/customFunction.o] Error 1

STDOUT: make: Entering directory '/opt/MATLAB/mw_server_v21.2.0'

[Compiling] IO_wrapperv4l2.c