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@ -19,7 +19,7 @@ const std::array<unsigned int, 6> srateNums {
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const char *makefile_text_h7 = R"make(
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all:
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@arm-none-eabi-g++ -x c++ -Os -fno-exceptions -fno-rtti \
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@arm-none-eabi-g++ -x c++ -Os -std=c++20 -fno-exceptions -fno-rtti \
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-mcpu=cortex-m7 -mthumb -mfloat-abi=hard -mfpu=fpv5-d16 -mtune=cortex-m7 \
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-nostartfiles \
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-Wl,-Ttext-segment=0x00000000 -Wl,-zmax-page-size=512 -Wl,-eprocess_data_entry \
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@ -34,7 +34,7 @@ all:
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)make";
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const char *makefile_text_l4 = R"make(
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all:
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@arm-none-eabi-g++ -x c++ -Os -fno-exceptions -fno-rtti \
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@arm-none-eabi-g++ -x c++ -Os -std=c++20 -fno-exceptions -fno-rtti \
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-mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -mtune=cortex-m4 \
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-nostartfiles \
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-Wl,-Ttext-segment=0x10000000 -Wl,-zmax-page-size=512 -Wl,-eprocess_data_entry \
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@ -48,15 +48,20 @@ all:
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arm-none-eabi-size $0.o
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)make";
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// $0 = buffer size
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const char *file_header_h7 = R"cpp(
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#include <cstdint>
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#include <span>
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using adcsample_t = uint16_t;
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constexpr unsigned int SIZE = $0;
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adcsample_t *process_data(adcsample_t *samples, unsigned int size);
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using Sample = uint16_t;
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using Samples = std::span<Sample, $0>;
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Sample *process_data(Samples samples);
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extern "C" void process_data_entry()
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{
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((void (*)())process_data)();
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Sample *samples;
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asm("mov %0, r0" : "=r" (samples));
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process_data(Samples(samples, $0));
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}
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constexpr double PI = 3.14159265358979323846L;
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@ -94,7 +99,7 @@ return 0;
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}
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auto readalt() {
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adcsample_t s;
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Sample s;
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asm("svc 3; mov %0, r0" : "=&r"(s));
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return s;
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}
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@ -104,13 +109,17 @@ return s;
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)cpp";
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const char *file_header_l4 = R"cpp(
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#include <cstdint>
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#include <span>
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using Sample = uint16_t;
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using Samples = std::span<Sample, $0>;
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using adcsample_t = uint16_t;
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constexpr unsigned int SIZE = $0;
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adcsample_t *process_data(adcsample_t *samples, unsigned int size);
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Sample *process_data(Samples samples);
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extern "C" void process_data_entry()
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{
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((void (*)())process_data)();
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Sample *samples;
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asm("mov %0, r0" : "=r" (samples));
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process_data(Samples(samples, $0));
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}
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constexpr float PI = 3.14159265358979L;
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@ -148,7 +157,7 @@ return 0;
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}
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auto readalt() {
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adcsample_t s;
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Sample s;
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asm("push {r4-r6}; svc 3; mov %0, r0; pop {r4-r6}" : "=&r"(s));
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return s;
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}
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@ -159,9 +168,9 @@ return s;
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const char *file_content =
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R"cpp(adcsample_t *process_data(adcsample_t *samples, unsigned int size)
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R"cpp(Sample *process_data(Samples samples)
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{
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return samples;
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return samples.data();
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}
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)cpp";
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