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-----------
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-- Reset --
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-----------
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procedure Reset (This : in out SDMMC_Controller)
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is
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begin
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if This.Periph.all'Address = SDMMC1_Base then
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RCC_Periph.APB2RSTR.SDMMC1RST := True;
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RCC_Periph.APB2RSTR.SDMMC1RST := False;
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elsif This.Periph.all'Address = SDMMC2_Base then
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RCC_Periph.APB2RSTR.SDMMC2RST := True;
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RCC_Periph.APB2RSTR.SDMMC2RST := False;
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else
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raise Unknown_Device;
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end if;
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end Reset;
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----------------------
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-- Set_Clock_Source --
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----------------------
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procedure Set_Clock_Source
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(This : in out SDMMC_Controller;
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Src : SDMMC_Clock_Source)
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is
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Sel_Value : constant Boolean := Src = Src_Sysclk;
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begin
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if This.Periph.all'Address = SDMMC1_Base then
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RCC_Periph.DKCFGR2.SDMMC1SEL := Sel_Value;
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elsif This.Periph.all'Address = SDMMC2_Base then
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RCC_Periph.DKCFGR2.SDMMC2SEL := Sel_Value;
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else
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raise Unknown_Device;
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end if;
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case Src is
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when Src_Sysclk =>
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STM32.SDMMC.Set_Clk_Src_Speed
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(This, System_Clock_Frequencies.SYSCLK);
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when Src_48Mhz =>
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STM32.SDMMC.Set_Clk_Src_Speed
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(This, 48_000_000);
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end case;
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end Set_Clock_Source;
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------------------------------
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-- System_Clock_Frequencies --
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------------------------------
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function System_Clock_Frequencies return RCC_System_Clocks
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is
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Source : constant UInt2 := RCC_Periph.CFGR.SWS;
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Result : RCC_System_Clocks;
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begin
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Result.I2SCLK := 0;
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case Source is
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when 0 =>
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-- HSI as source
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Result.SYSCLK := HSI_VALUE;
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when 1 =>
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-- HSE as source
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Result.SYSCLK := HSE_VALUE;
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when 2 =>
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-- PLL as source
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declare
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HSE_Source : constant Boolean := RCC_Periph.PLLCFGR.PLLSRC;
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Pllm : constant UInt32 :=
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UInt32 (RCC_Periph.PLLCFGR.PLLM);
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Plln : constant UInt32 :=
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UInt32 (RCC_Periph.PLLCFGR.PLLN);
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Pllp : constant UInt32 :=
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(UInt32 (RCC_Periph.PLLCFGR.PLLP) + 1) * 2;
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Pllvco : UInt32;
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begin
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if not HSE_Source then
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Pllvco := HSI_VALUE;
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else
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Pllvco := HSE_VALUE;
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end if;
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Pllvco := Pllvco / Pllm;
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Result.I2SCLK := Pllvco;
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Pllvco := Pllvco * Plln;
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Result.SYSCLK := Pllvco / Pllp;
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Function Definition: procedure Reset_All_ADC_Units is
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Function Body: begin
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RCC_Periph.APB2RSTR.ADCRST := True;
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RCC_Periph.APB2RSTR.ADCRST := False;
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end Reset_All_ADC_Units;
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------------------
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-- Enable_Clock --
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------------------
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