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player/Project/Src/Drive/Source/sdram.c

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/***
***************************************************************************
* @file sdram.c
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* @brief sdram<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֲ<EFBFBD>ڹٷ<EFBFBD>stm32f429discovery<EFBFBD><EFBFBD><EFBFBD>̣<EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>޸<EFBFBD>
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*
******************************************************************************
*
*
*
*
***************************************************************************
***/
#include "sdram.h"
/******************************************************************************************************
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: SDRAM_delay
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λԼΪ5ms
* ˵ <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
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*******************************************************************************************************/
void SDRAM_delay(__IO uint32_t nCount)
{
__IO uint32_t index = 0;
for(index = (100000 * nCount); index != 0; index--)
{
}
}
/******************************************************************************************************
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: SDRAM_GPIO_Config
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD><EFBFBD><EFBFBD>GPIO
* ˵ <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
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*******************************************************************************************************/
void SDRAM_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE |
RCC_AHB1Periph_GPIOF | RCC_AHB1Periph_GPIOG | RCC_AHB1Periph_GPIOH | RCC_AHB1Periph_GPIOI,ENABLE);
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//IO<49><4F><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD>ù<EFBFBD><C3B9><EFBFBD>
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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//<2F><>ַ<EFBFBD><D6B7>
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GPIO_PinAFConfig(FMC_A0_PORT, FMC_A0_PINSOURCE , FMC_A0_AF);
GPIO_PinAFConfig(FMC_A1_PORT, FMC_A1_PINSOURCE , FMC_A1_AF);
GPIO_PinAFConfig(FMC_A2_PORT, FMC_A2_PINSOURCE , FMC_A2_AF);
GPIO_PinAFConfig(FMC_A3_PORT, FMC_A3_PINSOURCE , FMC_A3_AF);
GPIO_PinAFConfig(FMC_A4_PORT, FMC_A4_PINSOURCE , FMC_A4_AF);
GPIO_PinAFConfig(FMC_A5_PORT, FMC_A5_PINSOURCE , FMC_A5_AF);
GPIO_PinAFConfig(FMC_A6_PORT, FMC_A6_PINSOURCE , FMC_A6_AF);
GPIO_PinAFConfig(FMC_A7_PORT, FMC_A7_PINSOURCE , FMC_A7_AF);
GPIO_PinAFConfig(FMC_A8_PORT, FMC_A8_PINSOURCE , FMC_A8_AF);
GPIO_PinAFConfig(FMC_A9_PORT, FMC_A9_PINSOURCE , FMC_A9_AF);
GPIO_PinAFConfig(FMC_A10_PORT, FMC_A10_PINSOURCE , FMC_A10_AF);
GPIO_PinAFConfig(FMC_A11_PORT, FMC_A11_PINSOURCE , FMC_A11_AF);
GPIO_InitStructure.GPIO_Pin = FMC_A0_PIN;
GPIO_Init(FMC_A0_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A1_PIN;
GPIO_Init(FMC_A1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A2_PIN;
GPIO_Init(FMC_A2_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A3_PIN;
GPIO_Init(FMC_A3_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A4_PIN;
GPIO_Init(FMC_A4_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A5_PIN;
GPIO_Init(FMC_A5_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A6_PIN;
GPIO_Init(FMC_A6_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A7_PIN;
GPIO_Init(FMC_A7_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A8_PIN;
GPIO_Init(FMC_A8_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A9_PIN;
GPIO_Init(FMC_A9_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A10_PIN;
GPIO_Init(FMC_A10_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_A11_PIN;
GPIO_Init(FMC_A11_PORT, &GPIO_InitStructure);
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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GPIO_PinAFConfig(FMC_D0_PORT, FMC_D0_PINSOURCE , FMC_D0_AF);
GPIO_PinAFConfig(FMC_D1_PORT, FMC_D1_PINSOURCE , FMC_D1_AF);
GPIO_PinAFConfig(FMC_D2_PORT, FMC_D2_PINSOURCE , FMC_D2_AF);
GPIO_PinAFConfig(FMC_D3_PORT, FMC_D3_PINSOURCE , FMC_D3_AF);
GPIO_PinAFConfig(FMC_D4_PORT, FMC_D4_PINSOURCE , FMC_D4_AF);
GPIO_PinAFConfig(FMC_D5_PORT, FMC_D5_PINSOURCE , FMC_D5_AF);
GPIO_PinAFConfig(FMC_D6_PORT, FMC_D6_PINSOURCE , FMC_D6_AF);
GPIO_PinAFConfig(FMC_D7_PORT, FMC_D7_PINSOURCE , FMC_D7_AF);
GPIO_PinAFConfig(FMC_D8_PORT, FMC_D8_PINSOURCE , FMC_D8_AF);
GPIO_PinAFConfig(FMC_D9_PORT, FMC_D9_PINSOURCE , FMC_D9_AF);
GPIO_PinAFConfig(FMC_D10_PORT, FMC_D10_PINSOURCE , FMC_D10_AF);
GPIO_PinAFConfig(FMC_D11_PORT, FMC_D11_PINSOURCE , FMC_D11_AF);
GPIO_PinAFConfig(FMC_D12_PORT, FMC_D12_PINSOURCE , FMC_D12_AF);
GPIO_PinAFConfig(FMC_D13_PORT, FMC_D13_PINSOURCE , FMC_D13_AF);
GPIO_PinAFConfig(FMC_D14_PORT, FMC_D14_PINSOURCE , FMC_D14_AF);
GPIO_PinAFConfig(FMC_D15_PORT, FMC_D15_PINSOURCE , FMC_D15_AF);
GPIO_PinAFConfig(FMC_D16_PORT, FMC_D16_PINSOURCE , FMC_D16_AF);
GPIO_PinAFConfig(FMC_D17_PORT, FMC_D17_PINSOURCE , FMC_D17_AF);
GPIO_PinAFConfig(FMC_D18_PORT, FMC_D18_PINSOURCE , FMC_D18_AF);
GPIO_PinAFConfig(FMC_D19_PORT, FMC_D19_PINSOURCE , FMC_D19_AF);
GPIO_PinAFConfig(FMC_D20_PORT, FMC_D20_PINSOURCE , FMC_D20_AF);
GPIO_PinAFConfig(FMC_D21_PORT, FMC_D21_PINSOURCE , FMC_D21_AF);
GPIO_PinAFConfig(FMC_D22_PORT, FMC_D22_PINSOURCE , FMC_D22_AF);
GPIO_PinAFConfig(FMC_D23_PORT, FMC_D23_PINSOURCE , FMC_D23_AF);
GPIO_PinAFConfig(FMC_D24_PORT, FMC_D24_PINSOURCE , FMC_D24_AF);
GPIO_PinAFConfig(FMC_D25_PORT, FMC_D25_PINSOURCE , FMC_D25_AF);
GPIO_PinAFConfig(FMC_D26_PORT, FMC_D26_PINSOURCE , FMC_D26_AF);
GPIO_PinAFConfig(FMC_D27_PORT, FMC_D27_PINSOURCE , FMC_D27_AF);
GPIO_PinAFConfig(FMC_D28_PORT, FMC_D28_PINSOURCE , FMC_D28_AF);
GPIO_PinAFConfig(FMC_D29_PORT, FMC_D29_PINSOURCE , FMC_D29_AF);
GPIO_PinAFConfig(FMC_D30_PORT, FMC_D30_PINSOURCE , FMC_D30_AF);
GPIO_PinAFConfig(FMC_D31_PORT, FMC_D31_PINSOURCE , FMC_D31_AF);
GPIO_InitStructure.GPIO_Pin = FMC_D0_PIN;
GPIO_Init(FMC_D0_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D1_PIN;
GPIO_Init(FMC_D1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D2_PIN;
GPIO_Init(FMC_D2_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D3_PIN;
GPIO_Init(FMC_D3_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D4_PIN;
GPIO_Init(FMC_D4_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D5_PIN;
GPIO_Init(FMC_D5_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D6_PIN;
GPIO_Init(FMC_D6_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D7_PIN;
GPIO_Init(FMC_D7_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D8_PIN;
GPIO_Init(FMC_D8_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D9_PIN;
GPIO_Init(FMC_D9_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D10_PIN;
GPIO_Init(FMC_D10_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D11_PIN;
GPIO_Init(FMC_D11_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D12_PIN;
GPIO_Init(FMC_D12_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D13_PIN;
GPIO_Init(FMC_D13_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D14_PIN;
GPIO_Init(FMC_D14_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D15_PIN;
GPIO_Init(FMC_D15_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D16_PIN;
GPIO_Init(FMC_D16_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D17_PIN;
GPIO_Init(FMC_D17_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D18_PIN;
GPIO_Init(FMC_D18_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D19_PIN;
GPIO_Init(FMC_D19_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D20_PIN;
GPIO_Init(FMC_D20_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D21_PIN;
GPIO_Init(FMC_D21_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D22_PIN;
GPIO_Init(FMC_D22_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D23_PIN;
GPIO_Init(FMC_D23_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D24_PIN;
GPIO_Init(FMC_D24_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D25_PIN;
GPIO_Init(FMC_D25_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D26_PIN;
GPIO_Init(FMC_D26_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D27_PIN;
GPIO_Init(FMC_D27_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D28_PIN;
GPIO_Init(FMC_D28_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D29_PIN;
GPIO_Init(FMC_D29_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D30_PIN;
GPIO_Init(FMC_D30_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_D31_PIN;
GPIO_Init(FMC_D31_PORT, &GPIO_InitStructure);
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//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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GPIO_PinAFConfig(FMC_CS_PORT, FMC_CS_PINSOURCE , FMC_CS_AF);
GPIO_PinAFConfig(FMC_BA0_PORT, FMC_BA0_PINSOURCE , FMC_BA0_AF);
GPIO_PinAFConfig(FMC_BA1_PORT, FMC_BA1_PINSOURCE , FMC_BA1_AF);
GPIO_PinAFConfig(FMC_WE_PORT, FMC_WE_PINSOURCE , FMC_WE_AF);
GPIO_PinAFConfig(FMC_RAS_PORT, FMC_RAS_PINSOURCE , FMC_RAS_AF);
GPIO_PinAFConfig(FMC_CAS_PORT, FMC_CAS_PINSOURCE , FMC_CAS_AF);
GPIO_PinAFConfig(FMC_CLK_PORT, FMC_CLK_PINSOURCE , FMC_CLK_AF);
GPIO_PinAFConfig(FMC_CKE_PORT, FMC_CKE_PINSOURCE , FMC_CKE_AF);
GPIO_PinAFConfig(FMC_UDQM_PORT, FMC_UDQM_PINSOURCE , FMC_UDQM_AF);
GPIO_PinAFConfig(FMC_LDQM_PORT, FMC_LDQM_PINSOURCE , FMC_LDQM_AF);
GPIO_PinAFConfig(FMC_NBL2_PORT, FMC_NBL2_PINSOURCE , FMC_NBL2_AF);
GPIO_PinAFConfig(FMC_NBL3_PORT, FMC_NBL3_PINSOURCE , FMC_NBL3_AF);
GPIO_InitStructure.GPIO_Pin = FMC_CS_PIN;
GPIO_Init(FMC_CS_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_BA0_PIN;
GPIO_Init(FMC_BA0_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_BA1_PIN;
GPIO_Init(FMC_BA1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_WE_PIN;
GPIO_Init(FMC_WE_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_RAS_PIN;
GPIO_Init(FMC_RAS_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_CAS_PIN;
GPIO_Init(FMC_CAS_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_CLK_PIN;
GPIO_Init(FMC_CLK_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_CKE_PIN;
GPIO_Init(FMC_CKE_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_UDQM_PIN;
GPIO_Init(FMC_UDQM_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_LDQM_PIN;
GPIO_Init(FMC_LDQM_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_NBL2_PIN;
GPIO_Init(FMC_NBL2_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = FMC_NBL3_PIN;
GPIO_Init(FMC_NBL3_PORT, &GPIO_InitStructure);
}
/******************************************************************************************************
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: SDRAM_InitSequence
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: SDRAM <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* ˵ <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD><EFBFBD><EFBFBD>SDRAM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD>Ʒ<EFBFBD>ʽ
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*******************************************************************************************************/
void SDRAM_InitSequence(void)
{
FMC_SDRAMCommandTypeDef FMC_SDRAMCommandStructure;
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u32 Reg = 0; // <20><><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_CLK_Enabled; // <20><><EFBFBD><EFBFBD>SDRAMʱ<4D><CAB1>
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_COMMAND_TARGET_BANK; // ѡ<><D1A1>Ҫ<EFBFBD><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD>
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FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
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while(FMC_GetFlagStatus(FMC_BANK_SDRAM, FMC_FLAG_Busy) != RESET); //<2F>ȴ<EFBFBD>SDRAM<41><4D><EFBFBD><EFBFBD>
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure); // <20><><EFBFBD><EFBFBD>SDRAM
SDRAM_delay(1); //<2F><>ʱ5ms
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FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_PALL; // Ԥ<><D4A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_COMMAND_TARGET_BANK; // ѡ<><D1A1>Ҫ<EFBFBD><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD>
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FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
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while(FMC_GetFlagStatus(FMC_BANK_SDRAM, FMC_FLAG_Busy) != RESET) //<2F>ȴ<EFBFBD>SDRAM<41><4D><EFBFBD><EFBFBD>
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure); // <20><><EFBFBD><EFBFBD>SDRAM
SDRAM_delay(1); //<2F><>ʱ5ms
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//<2F>Զ<EFBFBD>ˢ<EFBFBD><CBA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_AutoRefresh; // ʹ<><CAB9><EFBFBD>Զ<EFBFBD>ˢ<EFBFBD><CBA2>
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_COMMAND_TARGET_BANK; // ѡ<><D1A1>Ҫ<EFBFBD><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD>
FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 8; // <20>Զ<EFBFBD>ˢ<EFBFBD>´<EFBFBD><C2B4><EFBFBD>
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FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
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while(FMC_GetFlagStatus(FMC_BANK_SDRAM, FMC_FLAG_Busy) != RESET); //<2F>ȴ<EFBFBD>SDRAM<41><4D><EFBFBD><EFBFBD>
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure); // <20><><EFBFBD><EFBFBD>SDRAM
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//<2F>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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Reg = (u32)SDRAM_MODEREG_BURST_LENGTH_2 |
SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |
SDRAM_MODEREG_CAS_LATENCY_3 |
SDRAM_MODEREG_OPERATING_MODE_STANDARD |
SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
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FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_LoadMode; // <20><><EFBFBD><EFBFBD>ģʽ<C4A3>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_COMMAND_TARGET_BANK; // ѡ<><D1A1>Ҫ<EFBFBD><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD><EFBFBD><EFBFBD>
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FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
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FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = Reg; // <20>Ĵ<EFBFBD><C4B4><EFBFBD>ֵ
while(FMC_GetFlagStatus(FMC_BANK_SDRAM, FMC_FLAG_Busy) != RESET); //<2F>ȴ<EFBFBD>SDRAM<41><4D><EFBFBD><EFBFBD>
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure); // <20><><EFBFBD><EFBFBD>SDRAM
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FMC_SetRefreshCount(1386); // <20><><EFBFBD><EFBFBD>ˢ<EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD>
while(FMC_GetFlagStatus(FMC_BANK_SDRAM, FMC_FLAG_Busy) != RESET); //<2F>ȴ<EFBFBD>SDRAM<41><4D><EFBFBD><EFBFBD>
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}
/******************************************************************************************************
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: SDRAM_Init
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: SDRAM<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
* ˵ <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>FMC<EFBFBD><EFBFBD>SDRAM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*******************************************************************************************************/
void SDRAM_Init(void)
{
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u32 i = 0; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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FMC_SDRAMInitTypeDef FMC_SDRAMInitStructure;
FMC_SDRAMTimingInitTypeDef FMC_SDRAMTimingInitStructure;
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RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE); // <20><><EFBFBD><EFBFBD>FMCʱ<43><CAB1>
SDRAM_GPIO_Config(); // <20><>ʼ<EFBFBD><CABC>IO<49><4F>
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FMC_SDRAMTimingInitStructure.FMC_LoadToActiveDelay = 2; // TMRD: min=12ns (2x11.11ns)
FMC_SDRAMTimingInitStructure.FMC_ExitSelfRefreshDelay = 7; // TXSR: min=72ns (7x11.11ns)
FMC_SDRAMTimingInitStructure.FMC_SelfRefreshTime = 4; // TRAS: min=42ns (4x11.11ns)
FMC_SDRAMTimingInitStructure.FMC_RowCycleDelay = 6; // TRC: min=60ns (6x11.11ns)
FMC_SDRAMTimingInitStructure.FMC_WriteRecoveryTime = 2; // TWR: 2 Tck
FMC_SDRAMTimingInitStructure.FMC_RPDelay = 2; // TRP: 18ns => 2x11.11ns
FMC_SDRAMTimingInitStructure.FMC_RCDDelay = 2; // TRCD: 12ns => 2x11.11ns
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FMC_SDRAMInitStructure.FMC_Bank = FMC_BANK_SDRAM; // ѡ<><D1A1>BANK<4E><4B>
FMC_SDRAMInitStructure.FMC_ColumnBitsNumber = FMC_ColumnBits_Number_8b; // <20>е<EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>
FMC_SDRAMInitStructure.FMC_RowBitsNumber = FMC_RowBits_Number_12b; // <20>е<EFBFBD>ַ<EFBFBD>߿<EFBFBD><DFBF><EFBFBD>
FMC_SDRAMInitStructure.FMC_SDMemoryDataWidth = FMC_SDMemory_Width_32b; // <20><><EFBFBD>ݿ<EFBFBD><DDBF><EFBFBD>
FMC_SDRAMInitStructure.FMC_InternalBankNumber = FMC_InternalBank_Number_4; // bank<6E><6B><EFBFBD><EFBFBD>
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FMC_SDRAMInitStructure.FMC_CASLatency = FMC_CAS_Latency_3; // CAS
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FMC_SDRAMInitStructure.FMC_WriteProtection = FMC_Write_Protection_Disable; // <20><>ֹд<D6B9><D0B4><EFBFBD><EFBFBD>
FMC_SDRAMInitStructure.FMC_SDClockPeriod = FMC_SDClock_Period_2; // <20><>Ƶ
FMC_SDRAMInitStructure.FMC_ReadBurst = FMC_Read_Burst_Enable; // ͻ<><CDBB>ģʽ
FMC_SDRAMInitStructure.FMC_ReadPipeDelay = FMC_ReadPipe_Delay_1; // <20><><EFBFBD>ӳ<EFBFBD>
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FMC_SDRAMInitStructure.FMC_SDRAMTimingStruct = &FMC_SDRAMTimingInitStructure;
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FMC_SDRAMInit(&FMC_SDRAMInitStructure); // <20><>ʼ<EFBFBD><CABC>FMC<4D>ӿ<EFBFBD>
SDRAM_InitSequence(); //<2F><><EFBFBD><EFBFBD>SDRAM
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// <20><>ʼ<EFBFBD><CABC>֮<EFBFBD>󣬽<EFBFBD><F3A3ACBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD>Ϊ<EFBFBD>ճ<EFBFBD>ʼ<EFBFBD><CABC>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>д<EFBFBD><D0B4><EFBFBD>ݴ<EFBFBD><DDB4>ڲ<EFBFBD><DAB2>ȶ<EFBFBD><C8B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>дһ<D0B4><D2BB><EFBFBD><EFBFBD><EFBFBD>ݡ<EFBFBD>
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for (i = 0; i < SDRAM_Size/4; i++)
{
*(__IO u32*) (SDRAM_BANK_ADDR + 4*i) = 0x55555555;
}
for (i = 0; i < SDRAM_Size/4; i++)
{
*(__IO u32*) (SDRAM_BANK_ADDR + 4*i) = 0x00000000;
}
}
/******************************************************************************************************
ת»»Ϊgb2312±àÂë
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* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: SDRAM_Test
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD>: <EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: SUCCESS - <EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD>ERROR - ʧ<EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>: SDRAM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* ˵ <EFBFBD><EFBFBD>: <EFBFBD><EFBFBD><EFBFBD><EFBFBD>32λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD>ٶ<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һһ<EFBFBD><EFBFBD><EFBFBD>бȽϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD>룬
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤NBL0<EFBFBD><EFBFBD>NBL1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*******************************************************************************************************/
u8 SDRAM_Test(void)
{
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u32 i = 0; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
u32 ReadData = 0; // <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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u8 ReadData_8b;
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printf("STM32F429 SDRAM<41><4D><EFBFBD><EFBFBD>\r\n");
printf("<EFBFBD><EFBFBD><EFBFBD>Կ<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>32λ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>...\r\n");
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for (i = 0; i < SDRAM_Size/4; i++)
{
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*(__IO u32*) (SDRAM_BANK_ADDR + 4*i) = i; // д<><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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printf("д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><EFBFBD>Ƚ<EFBFBD>...\r\n");
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for(i = 0; i < SDRAM_Size/4;i++ )
{
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ReadData = *(__IO u32*)(SDRAM_BANK_ADDR + 4 * i ); // <20><>SDRAM<41><4D><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
if( ReadData != i ) //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD>ؼ<EFBFBD><D8BC><EFBFBD>ʧ<EFBFBD>ܽ<EFBFBD><DCBD><EFBFBD><EFBFBD><EFBFBD>
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{
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printf("SDRAM<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>\r\n");
return ERROR; // <20><><EFBFBD><EFBFBD>ʧ<EFBFBD>ܱ<EFBFBD>־
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}
}
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printf("32λ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD>ȶ<EFBFBD>дͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>8λ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
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for (i = 0; i < 255; i++)
{
*(__IO u8*) (SDRAM_BANK_ADDR + i) = i;
}
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printf("д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ݲ<EFBFBD><EFBFBD>Ƚ<EFBFBD>...\r\n");
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for (i = 0; i < 255; i++)
{
ReadData_8b = *(__IO u8*) (SDRAM_BANK_ADDR + i);
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if( ReadData_8b != (u8)i ) //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȣ<EFBFBD><C8A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,<2C><><EFBFBD>ؼ<EFBFBD><D8BC><EFBFBD>ʧ<EFBFBD>ܽ<EFBFBD><DCBD><EFBFBD><EFBFBD><EFBFBD>
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{
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printf("8λ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD>ȶ<EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>\r\n");
printf("<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>NBL0<EFBFBD><EFBFBD>NBL1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
return ERROR; // <20><><EFBFBD><EFBFBD>ʧ<EFBFBD>ܱ<EFBFBD>־
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}
}
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printf("8λ<EFBFBD><EFBFBD><EFBFBD>ݿ<EFBFBD><EFBFBD>ȶ<EFBFBD>дͨ<EFBFBD><EFBFBD>\r\n");
printf("SDRAM<EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>\r\n");
return SUCCESS; // <20><><EFBFBD>سɹ<D8B3><C9B9><EFBFBD>־
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}
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