/**
* @brief Configures the FMC and GPIOs to interface with the NOR flash memory.
* This function must be called before any read/write operation
* on the NOR flash.
* @param None
* @retval None
*/
void NOR_Init(void)
{
FMC_NORSRAMInitTypeDef FMC_NORSRAMInitStructure;
FMC_NORSRAMTimingInitTypeDef FMC_NORSRAMTimingStructure;
/* GPIO configuration for FMC NOR bank */
NOR_GPIOConfig();
/* Enable FMC Clock */
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE);
/* FMC Configuration ---------------------------------------------------------*/
/* NOR memory timing configuration */
FMC_NORSRAMTimingStructure.FMC_AddressSetupTime = 4;
FMC_NORSRAMTimingStructure.FMC_AddressHoldTime = 3;
FMC_NORSRAMTimingStructure.FMC_DataSetupTime = 7;
FMC_NORSRAMTimingStructure.FMC_BusTurnAroundDuration = 1;
FMC_NORSRAMTimingStructure.FMC_CLKDivision = 1;
FMC_NORSRAMTimingStructure.FMC_DataLatency = 0;
FMC_NORSRAMTimingStructure.FMC_AccessMode = FMC_AccessMode_A;
/* NOR memory control configuration */
FMC_NORSRAMInitStructure.FMC_Bank = FMC_Bank1_NORSRAM1;
FMC_NORSRAMInitStructure.FMC_DataAddressMux = FMC_DataAddressMux_Disable;
FMC_NORSRAMInitStructure.FMC_MemoryType = FMC_MemoryType_NOR;
FMC_NORSRAMInitStructure.FMC_MemoryDataWidth = FMC_NORSRAM_MemoryDataWidth_16b;
FMC_NORSRAMInitStructure.FMC_BurstAccessMode = NOR_BURSTACCESS;
FMC_NORSRAMInitStructure.FMC_WaitSignalPolarity = FMC_WaitSignalPolarity_Low;
FMC_NORSRAMInitStructure.FMC_WrapMode = FMC_WrapMode_Disable;
FMC_NORSRAMInitStructure.FMC_WaitSignalActive = FMC_WaitSignalActive_BeforeWaitState;
FMC_NORSRAMInitStructure.FMC_WriteOperation = FMC_WriteOperation_Enable;
FMC_NORSRAMInitStructure.FMC_WaitSignal = FMC_WaitSignal_Disable;
FMC_NORSRAMInitStructure.FMC_ExtendedMode = FMC_ExtendedMode_Disable;
FMC_NORSRAMInitStructure.FMC_AsynchronousWait = FMC_AsynchronousWait_Disable;
FMC_NORSRAMInitStructure.FMC_WriteBurst = NOR_WRITEBURST;
FMC_NORSRAMInitStructure.FMC_ContinousClock = CONTINUOUSCLOCK_FEATURE;
FMC_NORSRAMInitStructure.FMC_ReadWriteTimingStruct = &FMC_NORSRAMTimingStructure;
FMC_NORSRAMInitStructure.FMC_WriteTimingStruct = &FMC_NORSRAMTimingStructure;
/* FMC NOR memory de-initializtion */
FMC_NORSRAMDeInit(FMC_Bank1_NORSRAM1);
/* FMC NOR bank initialization */
FMC_NORSRAMInit(&FMC_NORSRAMInitStructure);
/* Enable the NOR memory bank */
FMC_NORSRAMCmd(FMC_Bank1_NORSRAM1, ENABLE);
}
/**
* @brief Configures the FMC and GPIOs to interface with the SRAM memory.
* This function must be called before any write/read operation
* on the SRAM.
* @param None
* @retval None
*/
void SRAM_Init(void)
{
FMC_NORSRAMInitTypeDef FMC_NORSRAMInitStructure;
FMC_NORSRAMTimingInitTypeDef NORSRAMTimingStructure;
/* GPIO configuration for FMC SRAM bank */
SRAM_GPIOConfig();
/* Enable FMC clock */
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE);
/* FMC Configuration ---------------------------------------------------------*/
/* SRAM Timing configuration */
NORSRAMTimingStructure.FMC_AddressSetupTime = 2;
NORSRAMTimingStructure.FMC_AddressHoldTime = 1;
NORSRAMTimingStructure.FMC_DataSetupTime = 2;
NORSRAMTimingStructure.FMC_BusTurnAroundDuration = 1;
NORSRAMTimingStructure.FMC_CLKDivision = 1;
NORSRAMTimingStructure.FMC_DataLatency = 0;
NORSRAMTimingStructure.FMC_AccessMode = FMC_AccessMode_A;
/* FMC SRAM control configuration */
FMC_NORSRAMInitStructure.FMC_Bank = FMC_Bank1_NORSRAM2;
FMC_NORSRAMInitStructure.FMC_DataAddressMux = FMC_DataAddressMux_Disable;
FMC_NORSRAMInitStructure.FMC_MemoryType = FMC_MemoryType_SRAM;
FMC_NORSRAMInitStructure.FMC_MemoryDataWidth = SRAM_MEMORY_WIDTH;
FMC_NORSRAMInitStructure.FMC_BurstAccessMode = SRAM_BURSTACCESS;
FMC_NORSRAMInitStructure.FMC_AsynchronousWait = FMC_AsynchronousWait_Disable;
FMC_NORSRAMInitStructure.FMC_WaitSignalPolarity = FMC_WaitSignalPolarity_Low;
FMC_NORSRAMInitStructure.FMC_WrapMode = FMC_WrapMode_Disable;
FMC_NORSRAMInitStructure.FMC_WaitSignalActive = FMC_WaitSignalActive_BeforeWaitState;
FMC_NORSRAMInitStructure.FMC_WriteOperation = FMC_WriteOperation_Enable;
FMC_NORSRAMInitStructure.FMC_WaitSignal = FMC_WaitSignal_Disable;
FMC_NORSRAMInitStructure.FMC_ExtendedMode = FMC_ExtendedMode_Disable;
FMC_NORSRAMInitStructure.FMC_WriteBurst = SRAM_WRITEBURST;
FMC_NORSRAMInitStructure.FMC_ContinousClock = CONTINUOUSCLOCK_FEATURE;
FMC_NORSRAMInitStructure.FMC_ReadWriteTimingStruct = &NORSRAMTimingStructure;
FMC_NORSRAMInitStructure.FMC_WriteTimingStruct = &NORSRAMTimingStructure;
/* SRAM configuration */
FMC_NORSRAMInit(&FMC_NORSRAMInitStructure);
/* Enable FMC Bank1_SRAM2 Bank */
FMC_NORSRAMCmd(FMC_Bank1_NORSRAM2, ENABLE);
}
/*
*********************************************************************************************************
* 函 数 名: bsp_InitNorFlash
* 功能说明: 配置连接外部NOR Flash的GPIO和FSMC
* 形 参: 无
* 返 回 值: 无
*********************************************************************************************************
*/
void bsp_InitNorFlash(void)
{
FMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
FMC_NORSRAMTimingInitTypeDef p;
GPIO_InitTypeDef GPIO_InitStructure;
/* 使能GPIO时钟 */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE | RCC_AHB1Periph_GPIOF |
RCC_AHB1Periph_GPIOG, ENABLE);
/* 使能 FSMC 时钟 */
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE);
/* NOR Flash 的 GPIO ：
PD0/FSMC_D2
PD1/FSMC_D3
PD4/FSMC_NOE
PD5/FSMC_NWE
PD6/FSMC_NWAIT - 忙信号，配置为GPIO，输入模式，通过软件查询方式判忙
PD8/FSMC_D13
PD9/FSMC_D14
PD10/FSMC_D15
PD11/FSMC_CLE/FSMC_A16
PD12/FSMC_ALE/FSMC_A17
PD13/FSMC_A18
PD14/FSMC_D0
PD15/FSMC_D1
PE3/FSMC_A19
PE4/FSMC_A20
PE5/FSMC_A21
PE6/FSMC_A22
PE7/FSMC_D4
PE8/FSMC_D5
PE9/FSMC_D6
PE10/FSMC_D7
PE11/FSMC_D8
PE12/FSMC_D9
PE13/FSMC_D10
PE14/FSMC_D11
PE15/FSMC_D12
PF0/FSMC_A0
PF1/FSMC_A1
PF2/FSMC_A2
PF3/FSMC_A3
PF4/FSMC_A4
PF5/FSMC_A5
PF12/FSMC_A6
PF13/FSMC_A7
PF14/FSMC_A8
PF15/FSMC_A9
PG0/FSMC_A10
PG1/FSMC_A11
PG2/FSMC_A12
PG3/FSMC_A13
PG4/FSMC_A14
PG5/FSMC_A15
PG9/FSMC_NE2 - 片选信号
*/
/* GPIOD configuration */
GPIO_PinAFConfig(GPIOD, GPIO_PinSource0, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource1, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource4, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource10, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource11, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource12, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource13, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource14, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource15, GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 |
GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/* GPIOE configuration */
GPIO_PinAFConfig(GPIOE, GPIO_PinSource3 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource4 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource6 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource7 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource8 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource9 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource10 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource11 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource12 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource13 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource14 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource15 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 |
GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7 |
GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11|
GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_Init(GPIOE, &GPIO_InitStructure);
/* GPIOF configuration */
GPIO_PinAFConfig(GPIOF, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource1 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource2 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource3 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource4 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource12 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource13 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource14 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource15 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 |
GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_12 | GPIO_Pin_13 |
GPIO_Pin_14 | GPIO_Pin_15;
GPIO_Init(GPIOF, &GPIO_InitStructure);
/* GPIOG configuration */
GPIO_PinAFConfig(GPIOG, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource1 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource2 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource3 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource4 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource9 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 |
GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_9;
GPIO_Init(GPIOG, &GPIO_InitStructure);
/* PD6 作为忙信号, 配置为GPIO输入模式，软件查询 */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; /* 输入模式 */
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/*-- FSMC Configuration ------------------------------------------------------*/
p.FMC_AddressSetupTime = 0x07; /* 0x05正常， 0x04 出错 2014-12-06 由6修改为 7 */
p.FMC_AddressHoldTime = 0x01;
p.FMC_DataSetupTime = 0x0D; /* 0x0B正常， 0x0A 出错 2014-12-06 由C修改为 D*/
p.FMC_BusTurnAroundDuration = 0x00;
p.FMC_CLKDivision = 0x00;
p.FMC_DataLatency = 0x00;
p.FMC_AccessMode = FMC_AccessMode_B;
FSMC_NORSRAMInitStructure.FMC_Bank = FMC_Bank1_NORSRAM2;
FSMC_NORSRAMInitStructure.FMC_DataAddressMux = FMC_DataAddressMux_Disable;
FSMC_NORSRAMInitStructure.FMC_MemoryType = FMC_MemoryType_NOR;
FSMC_NORSRAMInitStructure.FMC_MemoryDataWidth = FMC_NORSRAM_MemoryDataWidth_16b;
FSMC_NORSRAMInitStructure.FMC_BurstAccessMode = FMC_BurstAccessMode_Disable;
FSMC_NORSRAMInitStructure.FMC_AsynchronousWait = FMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FMC_WaitSignalPolarity = FMC_WaitSignalPolarity_Low;
FSMC_NORSRAMInitStructure.FMC_WrapMode = FMC_WrapMode_Disable;
FSMC_NORSRAMInitStructure.FMC_WaitSignalActive = FMC_WaitSignalActive_BeforeWaitState;
FSMC_NORSRAMInitStructure.FMC_WriteOperation = FMC_WriteOperation_Enable;
FSMC_NORSRAMInitStructure.FMC_WaitSignal = FMC_WaitSignal_Disable;
FSMC_NORSRAMInitStructure.FMC_ExtendedMode = FMC_ExtendedMode_Disable;
FSMC_NORSRAMInitStructure.FMC_WriteBurst = FMC_WriteBurst_Disable;
FSMC_NORSRAMInitStructure.FMC_ReadWriteTimingStruct = &p;
FSMC_NORSRAMInitStructure.FMC_WriteTimingStruct = &p;
FMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
/*!< Enable FSMC Bank1_SRAM2 Bank */
FMC_NORSRAMCmd(FMC_Bank1_NORSRAM2, ENABLE);
}