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最近搞了一块100个脚的STM32F407VG，想要试一试用FSMC接口控制安富莱的7寸TFT LCD，我是按着V5开发板的显示屏例程改的，因为V5开发板例程用的是178脚的，所以在接线和程序上做了如下的改动：
FSMC：D0-D15不变、NOE，NWE不变
原先PD13-FSMC_A18接LCD的RS脚，改为PD11-FSMC_A16
原先PG12-FSMC_NE4接片选NCS，改为PD7-FSMC_NE1
F407的NRST接LCD的NRST
一共21根线，RA8875_INT、SPI等线没有接
所以LCD_CtrlLinesConfig()中相应的IO口配置做了下小修改
static void LCD_CtrlLinesConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* 使能FSMC时钟 */
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC, ENABLE);
/* 使能 GPIO时钟 */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD | RCC_AHB1Periph_GPIOE, 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_PinAFConfig(GPIOD, GPIO_PinSource0, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource1, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource4, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource10, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource14, GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource15, GPIO_AF_FSMC);
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_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);
/* 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 */
GPIO_PinAFConfig(GPIOE, GPIO_PinSource4 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource5 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource7 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource8 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource9 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource10 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource11 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource12 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource13 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource14 , GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource15 , GPIO_AF_FSMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 | 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);
/* 设置 PD.11(A16 (RS)) 为复用推挽输出 */
GPIO_PinAFConfig(GPIOD, GPIO_PinSource11, GPIO_AF_FSMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/* 设置 PD.07 (LCD/CS)) 为复用推挽输出 */
GPIO_PinAFConfig(GPIOD, GPIO_PinSource7, GPIO_AF_FSMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_Init(GPIOD, &GPIO_InitStructure);
LCD_FSMCConfig()这个FSMC配置函数，也贴一下
static void LCD_FSMCConfig(void)
{
FSMC_NORSRAMInitTypeDef init;
FSMC_NORSRAMTimingInitTypeDef timingWrite;
FSMC_NORSRAMTimingInitTypeDef timingRead;
/*-- FSMC Configuration ------------------------------------------------------*/
/*----------------------- SRAM Bank 4 ----------------------------------------*/
/* FSMC_Bank1_NORSRAM4 configuration */
/* 摄像头DMA麻点，需设置 4 0 5 2 0 0 */
timingWrite.FSMC_AddressSetupTime = 4;
timingWrite.FSMC_AddressHoldTime = 0;
timingWrite.FSMC_DataSetupTime = 6;
timingWrite.FSMC_BusTurnAroundDuration = 1;
timingWrite.FSMC_CLKDivision = 0;
timingWrite.FSMC_DataLatency = 0;
timingWrite.FSMC_AccessMode = FSMC_AccessMode_A;
timingRead.FSMC_AddressSetupTime = 4;
timingRead.FSMC_AddressHoldTime = 0;
timingRead.FSMC_DataSetupTime = 8;
timingRead.FSMC_BusTurnAroundDuration = 1;
timingRead.FSMC_CLKDivision = 0;
timingRead.FSMC_DataLatency = 0;
timingRead.FSMC_AccessMode = FSMC_AccessMode_A;
/*
LCD configured as follow:
- Data/Address MUX = Disable
- Memory Type = SRAM
- Data Width = 16bit
- Write Operation = Enable
- Extended Mode = Enable
- Asynchronous Wait = Disable
*/
//init.FSMC_Bank = FSMC_Bank1_NORSRAM4;
init.FSMC_Bank = FSMC_Bank1_NORSRAM4;
init.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;
init.FSMC_MemoryType = FSMC_MemoryType_SRAM;
init.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;
init.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;
init.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable; /* 注意旧库无这个成员 */
init.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low;
init.FSMC_WrapMode = FSMC_WrapMode_Disable;
init.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
init.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
init.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
init.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;
init.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
init.FSMC_ReadWriteTimingStruct = &timingRead;
init.FSMC_WriteTimingStruct = &timingWrite;
FSMC_NORSRAMInit(&init);
/* - BANK 1 (of NOR/SRAM Bank 1~4) is enabled */
FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE);
这个函数原封不动没有改，里面配置的参数太多没怎么看懂，把NORSRAM4改成了NORSRAM1试了一试，没什么用，屏幕还是点不亮。。
因为100个脚的那个芯片外接8MHz晶振的，所以我把HSE_VALUE 改成了8000000。
bsp_ra8875_port.c文件中做了修改
#define RA8875_BASE ((uint32_t)(0x60000000 | 0x00000000))
#define RA8875_REG *(__IO uint16_t *)(RA8875_BASE + (1 << (16 + 1))) /* FSMC 16位总线模式下，FSMC_A16口线对应物理地址A17 */
#define RA8875_RAM *(__IO uint16_t *)(RA8875_BASE)
#define RA8875_RAM_ADDR RA8875_BASE
因为改用NE1，所以吧RA8875_BASE从6C000000改成了60000000，改用A16而不是用A18，所以吧RA8875_REG中的18+1改为16+1
一共改了这些东西，可是并没能把屏幕点亮- -，没有办法了，想请教一下，是FSMC配置的问题吗？
电路上的问题可能性不大，测过一遍，每个脚都接好了，屏幕插在V5主板上的时候也是好使的 |
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发表于 2015-7-20 03:32:50
发表于 2015-7-20 08:59:10
楼主
