- /*******************************************************************************
- * 函数名: LCD_CtrlLinesConfig
- * 参 数: 无
- * 返 回: 无
- * 功 能: 配置LCD控制口线，FSMC管脚设置为复用功能
- */
- static void LCD_CtrlLinesConfig(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- /* 使能 FSMC, GPIOD, GPIOE, GPIOF, GPIOG 和 AFIO 时钟 */
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |
- RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG |
- RCC_APB2Periph_AFIO, ENABLE);
- /* 设置 PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
- PD.10(D15), PD.14(D0), PD.15(D1) 为复用推挽输出 */
- 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_14 |
- GPIO_Pin_15; // | GPIO_Pin_7;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
- GPIO_Init(GPIOD, &GPIO_InitStructure);
- /* 设置 PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
- PE.14(D11), PE.15(D12) 为复用推挽输出 */
- /* PE3,PE4 用于A19, A20, STM32F103ZE-EK(REV 2.0)必须使能 */
- /* PE5,PE6 用于A19, A20, STM32F103ZE-EK(REV 2.0)必须使能 */
- GPIO_InitStructure.GPIO_Pin = 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_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 | GPIO_Pin_6;
- GPIO_Init(GPIOE, &GPIO_InitStructure);
- /* 设置 PF.00(A0 (RS)) 为复用推挽输出 */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
- GPIO_Init(GPIOF, &GPIO_InitStructure);
- /* 设置 PG.12(NE4 (LCD/CS)) 为复用推挽输出 - CE3(LCD /CS) */
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
- GPIO_Init(GPIOG, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
- GPIO_Init(GPIOB, &GPIO_InitStructure);
- GPIO_SetBits(GPIOB, GPIO_Pin_1);
- }
- static void LCD_FSMCConfig(void)
- {
- FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;
- FSMC_NORSRAMTimingInitTypeDef FSMC_NORSRAMTimingInitStructure;
- /*-- FSMC Configuration ------------------------------------------------------*/
- /*----------------------- SRAM Bank 4 ----------------------------------------*/
- /* FSMC_Bank1_NORSRAM4 configuration */
- FSMC_NORSRAMTimingInitStructure.FSMC_AddressSetupTime = 1;
- FSMC_NORSRAMTimingInitStructure.FSMC_AddressHoldTime = 0;
- FSMC_NORSRAMTimingInitStructure.FSMC_DataSetupTime = 2;
- FSMC_NORSRAMTimingInitStructure.FSMC_BusTurnAroundDuration = 0;
- FSMC_NORSRAMTimingInitStructure.FSMC_CLKDivision = 0;
- FSMC_NORSRAMTimingInitStructure.FSMC_DataLatency = 0;
- FSMC_NORSRAMTimingInitStructure.FSMC_AccessMode = FSMC_AccessMode_B;
- /* Color LCD configuration ------------------------------------
- LCD configured as follow:
- - Data/Address MUX = Disable
- - Memory Type = SRAM
- - Data Width = 16bit
- - Write Operation = Enable
- - Extended Mode = Enable
- - Asynchronous Wait = Disable */
- FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;
- FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
- FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;
- FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
- FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
- FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
- FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
- FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
- FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
- FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
- FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;
- FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &FSMC_NORSRAMTimingInitStructure;
- FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);
- /* - BANK 3 (of NOR/SRAM Bank 0~3) is enabled */
- FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
- }
小结：这里使用的地址映射属于BANK1 NOR/PSRAM1 所以DATA数据基址为0x6c000000 又因为LCD的RS连接在FSMC_A0上 所以CMD地址为0x6c000002。配置好FSMC后，要写DATA或CMD时只要对这两个地址操作就可以了。
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