fc4b2a554d
Updates to make the FT4222 platform extender more usable.
Previous implementation opened libft4222.so and loaded symbols as
needed. This implementation removes dynamic loading of libft4222 in
favor of creating a new shared libary which links against libft4222.so.
The dynamic loading is now done in mraa.c. One C method is exposed in
libmraa-platform-ft4222.so for finding/initializing an FT4222:
mraa_platform_t mraa_usb_platform_extender(mraa_board_t* board);
Mraa.c attempts to open this platform library and calls the
mraa_usb_platform_extender method. If an ftdi4222 is connected, the
user gets added IO from the extender. If no FT4222 device is connected,
continue as normal.
* Create a new platform library for the FT4222
* Expose only 1 C method from the library -
mraa_usb_platform_extender
* libmraa-platform-ft4222.so contains CXX code (as well as previous
C code). All *allocs have been removed in favor of global
C++ stl containers.
* Previously, the FT4222 would only initialize correctly if 2 ftdi
devices existed. Now, initialize FT4222 devices based on the
device id.
* Many fixes for various problems with the FT4222
* Added unit test for platform extender (minimal functionality w/o hw)
* Updated to FindFtd4222.cmake module to handle standard arguments
* Removed CMAKE_C_FLAGS addition of -DFTDID2XX and -DFTDI4222 since
these are NOT used anywhere in source.
* Building the FTDI4222 shim requires libft4222.h which requires
ftd2xx.h. Updated CMakeLists.txt to require both when building
the shim.
Signed-off-by: Noel Eck <noel.eck@intel.com>
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
#include <dlfcn.h>
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#include "gtest/gtest.h"
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#include "mraa/common.h"
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#include "mraa_internal_types.h"
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/* MRAA test fixture */
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class plaform_extender : public ::testing::Test {};
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/* Not much to test w/o hw - test a no-init case.
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* Note, w/o a link to libmraa, this binary does NOT initialize mraa
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* with the loader constructor attribute. This is intended. */
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TEST_F(plaform_extender, test_no_init)
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{
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mraa_board_t plat = {};
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void* usblib = dlopen("libmraa-platform-ft4222.so", RTLD_LAZY);
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ASSERT_NE((void*)NULL, usblib)
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<< "Failed to load libmraa-platform-ft4222.so, reason (" << dlerror()
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<< ")";
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fptr_add_platform_extender add_ft4222_platform =
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(fptr_add_platform_extender)dlsym(usblib, "mraa_usb_platform_extender");
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ASSERT_NE((void*)NULL, add_ft4222_platform) << "Symbol 'add_ft4222_platform' "
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<< "does not exist in libmraa-platform-ft4222.so";
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ASSERT_EQ(MRAA_ERROR_PLATFORM_NOT_INITIALISED, add_ft4222_platform(&plat))
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<< "Initialization returned a valid platform. Make sure no Ft4222 "
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<< "device is connected";
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}
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