added first unit test (#1027)

* added first unit test

* improved unit test names

CMakeLists.txt

@@ -18,7 +18,7 @@
 # Boston, MA 02110-1301, USA.
 #
 
-cmake_minimum_required(VERSION 2.8.9)
+cmake_minimum_required(VERSION 3.0)
 cmake_policy(SET CMP0005 NEW)
 
 set(CMAKE_TOOLCHAIN_FILE ${CMAKE_CURRENT_LIST_DIR}/firmware/toolchain-arm-cortex-m.cmake)
@@ -58,4 +58,5 @@ set(HACKRF_CPLD_XSVF_PATH ${HACKRF_PATH}/firmware/cpld/sgpio_if/${HACKRF_CPLD_XS
 set(HACKRF_FIRMWARE_DFU_IMAGE ${hackrf_usb_BINARY_DIR}/${HACKRF_FIRMWARE_DFU_FILENAME})
 set(HACKRF_FIRMWARE_BIN_IMAGE ${hackrf_usb_BINARY_DIR}/${HACKRF_FIRMWARE_BIN_FILENAME})
 
+enable_testing()
 add_subdirectory(firmware)

firmware/CMakeLists.txt

@@ -35,6 +35,7 @@ set(FIRMWARE_FILENAME ${FIRMWARE_NAME}.bin)
 
 add_subdirectory(application)
 add_subdirectory(baseband)
+add_subdirectory(baseband-test)
 
 # NOTE: Dependencies break if the .bin files aren't included in DEPENDS. WTF, CMake?
 add_custom_command(

firmware/baseband-test/CMakeLists.txt

@@ -0,0 +1,64 @@
+# Copyright (C) 2023 Bernd Herzog
+#
+# This file is part of PortaPack.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+enable_language(C CXX ASM)
+
+project(baseband_test)
+
+include(${CHIBIOS_PORTAPACK}/boards/PORTAPACK_BASEBAND/board.cmake)
+include(${CHIBIOS_PORTAPACK}/os/hal/platforms/LPC43xx_M4/platform.cmake)
+include(${CHIBIOS}/os/hal/hal.cmake)
+include(${CHIBIOS_PORTAPACK}/os/ports/GCC/ARMCMx/LPC43xx_M4/port.cmake)
+include(${CHIBIOS}/os/kernel/kernel.cmake)
+
+include(${CHIBIOS}/test/test.cmake)
+
+set(TEST_FILENAME testrunner)
+set(HOST_TOOLCHAIN g++)
+set(DDEFS -DLPC43XX -DLPC43XX_M4 -D__NEWLIB__ -DHACKRF_ONE -DTOOLCHAIN_GCC -DTOOLCHAIN_GCC_ARM -D_RANDOM_TCC=0 -D'VERSION_STRING=\"${VERSION}\"')
+
+set(CPP_FILES
+	${PROJECT_SOURCE_DIR}/main.cpp
+	${PROJECT_SOURCE_DIR}/dsp_fft_test.cpp
+	${COMMON}/dsp_fft.cpp
+)
+
+set(CPP_INCLUDES
+	${PROJECT_SOURCE_DIR}/include
+	${COMMON}
+	${PORTINC}
+	${KERNINC}
+	${TESTINC}
+	${HALINC}
+	${PLATFORMINC}
+	${BOARDINC}
+	${CHIBIOS}/os/various
+	${BASEBAND}
+)
+
+add_custom_target(
+	baseband_test ALL
+	COMMAND echo ${CPP_INCLUDES} | sed "s/[^[:space:]]*/-I \\\\0/g" > include_files
+	COMMAND ${HOST_TOOLCHAIN} ${DDEFS} -o ${TEST_FILENAME} -g ${CPP_FILES} `cat include_files`
+)
+
+add_test(NAME /home/j39f3fs/dev/portapack-mayhem
+    COMMAND ${TEST_FILENAME}
+)

firmware/baseband-test/dsp_fft_test.cpp

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "dsp_fft.hpp"
+#include "doctest.h"
+
+TEST_CASE("ifft successfully calculates dc on zero frequency") {
+    uint32_t fft_width = 8;
+    complex16_t* v = new complex16_t[fft_width];
+    complex16_t* tmp = new complex16_t[fft_width];
+
+    v[0] = {1024, 0};  // DC bin
+    v[1] = {0, 0};
+    v[2] = {0, 0};
+    v[3] = {0, 0};
+    v[4] = {0, 0};
+    v[5] = {0, 0};
+    v[6] = {0, 0};
+    v[7] = {0, 0};
+
+    ifft<complex16_t>(v, fft_width, tmp);
+
+    CHECK(v[0].real() == 1024);
+    CHECK(v[1].real() == 1024);
+    CHECK(v[2].real() == 1024);
+    CHECK(v[3].real() == 1024);
+    CHECK(v[4].real() == 1024);
+    CHECK(v[5].real() == 1024);
+    CHECK(v[6].real() == 1024);
+    CHECK(v[7].real() == 1024);
+
+    for (uint32_t i = 0; i < fft_width; i++)
+        CHECK(v[i].imag() == 0);
+
+    free(v);
+    free(tmp);
+}
+
+TEST_CASE("ifft successfully calculates pure sine of half the sample rate") {
+    uint32_t fft_width = 8;
+    complex16_t* v = new complex16_t[fft_width];
+    complex16_t* tmp = new complex16_t[fft_width];
+
+    v[0] = {0, 0};
+    v[1] = {0, 0};
+    v[2] = {0, 0};
+    v[3] = {0, 0};
+    v[4] = {1024, 0};  // sample rate /2 bin
+    v[5] = {0, 0};
+    v[6] = {0, 0};
+    v[7] = {0, 0};
+
+    ifft<complex16_t>(v, fft_width, tmp);
+
+    CHECK(v[0].real() == 1024);
+    CHECK(v[1].real() == -1024);
+    CHECK(v[2].real() == 1024);
+    CHECK(v[3].real() == -1024);
+    CHECK(v[4].real() == 1024);
+    CHECK(v[5].real() == -1024);
+    CHECK(v[6].real() == 1024);
+    CHECK(v[7].real() == -1024);
+
+    for (uint32_t i = 0; i < fft_width; i++)
+        CHECK(v[i].imag() == 0);
+
+    free(v);
+    free(tmp);
+}

firmware/baseband-test/main.cpp

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2023 Bernd Herzog
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"