SK-stm32f407 development board peripherals examples. Buy their own board supplied routines. I hope your reference.

Periph_Example-back\Libraries\CMSIS\CMSIS END USER LICENCE AGREEMENT.pdf
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...................\.........\.....\......\..\.........\......\.........\TASKING\cstart_thumb2.asm
...................\.........\.....\......\..\.........\......\.........\.rueSTUDIO\startup_stm32f4xx.s
...................\.........\.....\.ocumentation\CMSIS-SVD_Schema_1_0.xsd
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...................\.........\.....\.............\CMSIS_History.htm
...................\.........\.....\.............\CMSIS_Logo_Final.jpg
...................\.........\.....\.............\CMSIS_System_View_Description.htm
...................\.........\.....\.............\DSP_Lib\html\annotated.html
...................\.........\.....\.............\.......\....\arm_class_marks_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_convolution_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_dotproduct_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_fft_bin_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_fir_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_graphic_equalizer_example_q31_8c-example.html
...................\.........\.....\.............\.......\....\arm_linear_interp_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_matrix_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_signal_converge_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_sin_cos_example_f32_8c-example.html
...................\.........\.....\.............\.......\....\arm_variance_example_f32_8c-example.html
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