CC3200 SPI Issue

[rei-vilo]

When the SPI library is called from a library, compilation fails, even when SPI has been included in the main sketch.

"/Users/ReiVilo/Library/Energia15/packages/energia/tools/arm-none-eabi-gcc/4.8.4-20140725/bin/arm-none-eabi-g++" -c -g -Os -w -std=gnu++11 -ffunction-sections -fdata-sections -nostdlib -fno-threadsafe-statics --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf -MMD -mcpu=cortex-m4 -mthumb -DF_CPU=80000000L -DARDUINO=10610 -DENERGIA=10610 -DENERGIA_CC3200-LAUNCHXL -DENERGIA_ARCH_CC3200 "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/variants/CC3200-LAUNCHXL" "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/system/driverlib" "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/system/inc" "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/system" -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -mabi=aapcs "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/cores/cc3200" "-I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/variants/CC3200-LAUNCHXL" "/var/folders/hz/wncgspfd5wxgzmly78yvzk_m0000gn/T/build2bd1d110e6c47d509a7edf46f7b5491e.tmp/sketch/myLibrary.cpp" -o "/var/folders/hz/wncgspfd5wxgzmly78yvzk_m0000gn/T/build2bd1d110e6c47d509a7edf46f7b5491e.tmp/sketch/myLibrary.cpp.o" In file included from /var/folders/hz/wncgspfd5wxgzmly78yvzk_m0000gn/T/build2bd1d110e6c47d509a7edf46f7b5491e.tmp/sketch/myLibrary.h:1:0, from /var/folders/hz/wncgspfd5wxgzmly78yvzk_m0000gn/T/build2bd1d110e6c47d509a7edf46f7b5491e.tmp/sketch/myLibrary.cpp:1: /Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/system/driverlib/SPI.h:143:57: error: 'tBoolean' has not been declared extern unsigned long SPIIntStatus(unsigned long ulBase, tBoolean bMasked); ^ /var/folders/hz/wncgspfd5wxgzmly78yvzk_m0000gn/T/build2bd1d110e6c47d509a7edf46f7b5491e.tmp/sketch/myLibrary.cpp: In function 'void beginSPI()': myLibrary.cpp:5: error: 'SPI' was not declared in this scope SPI.begin(); ^ exit status 1 'SPI' was not declared in this scope

• Solution

The arm-none-eabi-g++ command line is missing the include -I/Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/libraries/SPI.

• CC3200_SPI_issue.ino

#include "myLibrary.h"
#include "SPI.h"

void setup() {
  // put your setup code here, to run once:
  beginSPI();
}

void loop() {
  // put your main code here, to run repeatedly:

}

• myLibrary.h

#include "SPI.h"

void beginSPI();

• myLibrary.cpp

#include "myLibrary.h"

void beginSPI()
{
  SPI.begin();

}

[rei-vilo]

Actually, there are two SPI libraries:

• spi.h at /Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/system/driverlib/spi.h
• SPI.h (with capital letters) at /Users/ReiVilo/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/libraries/SPI/SPI.h

[rei-vilo]

Order matters!

• If hardware/cc3200/1.0.2/system/driverlib is included before hardware/cc3200/1.0.2/libraries/SPI/, compilation fails, because hardware/cc3200/1.0.2/libraries/SPI/ isn't taken into account.
• If hardware/cc3200/1.0.2/libraries/SPI/ is included before hardware/cc3200/1.0.2/system/driverlib, compilation succeeds.

[tom-giesberg]

How can I make use of the "solution" above? Is there a make file or something to edit?

Thanks in advance.

[robertinant]

You can easily work around it for now by editing the file: /Energia15/packages/energia/hardware/cc3200/1.0.2/platform.txt. Look for:

compiler.driverlib.c.flags="-I{build.system.path}/driverlib" "-I{build.system.path}/inc" "-I{build.system.path}”
and replace it with:
compiler.driverlib.c.flags="-I{build.system.path}" "-I{build.system.path}/inc" "-I{build.system.path}”

[rei-vilo]

Is this trick also valid for the Pervasive Displays library?

Thank you.

[robertinant]

Yes it is. The issue is that there is a C compiler include flag that points at {build.system.path}/driverlib. This is an error and it should be {build.system.path}. Driverlib headers should be included with driverlib/xzy.h

[tom-giesberg]

Thanks, Robert, it worked like a charm.

[rei-vilo]

For Mac OS X users:

• Full path is ~/Library/Energia15/packages/energia/hardware/cc3200/1.0.2/platform.txt

[sri30]

I'm facing the same problem as well,but I'm running Energia on Windows 10. Could you please help me out?

[rei-vilo]

You need to look for the corresponding folder on Windows and perform the same operation as in https://github.com/energia/cc3200-core/issues/5#issuecomment-247780464

[sri30]

I'm using Energia version 1.6.10E18, and in the path E:\energia-1.6.10E18-windows\energia-1.6.10E18\hardware\energia the only folder I can find is named MSP30 even though I've installed the CC3200 board support package from the board manager. There is only one platform.txt file in the entire Energia installation folder and it doesn't have the above lines of code in it. Appreciate the help,thanks.

[StefanSch]

On windows the path looks like this: c:\Users\yourname\AppData\Local\Energia15\packages\energia\hardware\cc3200\1.0.2\platform.txt

[sri30]

Thank you so much@StefanSch . The sketch compiles without errors now. :-)

[rei-vilo]

Although this issue is closed, the solution should be committed.

[robertinant]

Fixed and committed.

[rei-vilo]

Thanks!

[rei-vilo]

Still to be released.