创作背景最近想用stm32写一个UI界面不看不知道一看才知道st官方就有现成的UI代码生成器然后马上尝试开干。在网上搜了不少教程跟着弄估计是自己哪里没有弄对一直报hardware fault的错误思来想去哪怕最后去足浴中心抱着漂亮小姐姐想了一整晚都没有想明白到底是哪里弄错了。于是我决定从第一步开始一步一步仔细调仔细看到底是哪里出了问题。硬件主控板使用的正点原子的STM32H750北极星板子4.3‘RGB显示屏软件touchgfxcubemxkeiltouchgfx4.26.1cubemx6.18.1keil5.36 编译使用v6cmsis5.8.0高版本在使用keil进入debug模式时候会运行一些代码跟踪不到甚至失败思路STM32H750内存和闪存都比较捉急于是决定使用板子上的SDRAMQSPI FLASH的方案一步一步开搞。一、调试SDRAM由于STM32H750内存不足肯定是需要加内存的不然touchgfx动不动来点缓存免得又去加内存。1.1 使用cubemx生成SDRAM代码新建cubemx工程设置芯片为stm32h750xbhx配置MPU配置时钟HSE主频480MHzSDRAM位于FMC配置SDRAM这里SDRAM的GPIO基本和北极星原理图一样不用修改不过需要把gpio的速度设置为超高速顺便把串口1配置一下方便调试配置完成之后生成代码1.2 添加sdram初始化代码#define SDRAM_MODEREG_BURST_LENGTH_1 0x00000000 #define SDRAM_MODEREG_BURST_LENGTH_2 0x00000001 #define SDRAM_MODEREG_BURST_LENGTH_4 0x00000002 #define SDRAM_MODEREG_BURST_LENGTH_8 0x00000004 #define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL 0x00000000 #define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED 0x00000008 #define SDRAM_MODEREG_CAS_LATENCY_2 0x00000020 #define SDRAM_MODEREG_CAS_LATENCY_3 0x00000030 #define SDRAM_MODEREG_OPERATING_MODE_STANDARD 0x00000000 #define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED 0x00000000 #define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE 0x00000200 extern SDRAM_HandleTypeDef hsdram1; static void sdram_initialization_sequence(void) { FMC_SDRAM_CommandTypeDef fmc_sdram_command_struct {0}; /* 使能时钟 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_CLK_ENABLE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 至少等待100us */ delay_us(500); /* 预充电 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_PALL; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 自刷新 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_AUTOREFRESH_MODE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 8; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 配置模式寄存器 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_LOAD_MODE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition SDRAM_MODEREG_BURST_LENGTH_1 | SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL | SDRAM_MODEREG_CAS_LATENCY_2 | SDRAM_MODEREG_OPERATING_MODE_STANDARD | SDRAM_MODEREG_WRITEBURST_MODE_SINGLE; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 配置刷新计数器 */ HAL_SDRAM_ProgramRefreshRate(hsdram1, 839); } /* USER CODE END 0 */ SDRAM_HandleTypeDef hsdram1; /* FMC initialization function */ void MX_FMC_Init(void) { /* USER CODE BEGIN FMC_Init 0 */ /* USER CODE END FMC_Init 0 */ FMC_SDRAM_TimingTypeDef SdramTiming {0}; /* USER CODE BEGIN FMC_Init 1 */ /* USER CODE END FMC_Init 1 */ /** Perform the SDRAM1 memory initialization sequence */ hsdram1.Instance FMC_SDRAM_DEVICE; /* hsdram1.Init */ hsdram1.Init.SDBank FMC_SDRAM_BANK1; hsdram1.Init.ColumnBitsNumber FMC_SDRAM_COLUMN_BITS_NUM_9; hsdram1.Init.RowBitsNumber FMC_SDRAM_ROW_BITS_NUM_13; hsdram1.Init.MemoryDataWidth FMC_SDRAM_MEM_BUS_WIDTH_32; hsdram1.Init.InternalBankNumber FMC_SDRAM_INTERN_BANKS_NUM_4; hsdram1.Init.CASLatency FMC_SDRAM_CAS_LATENCY_2; hsdram1.Init.WriteProtection FMC_SDRAM_WRITE_PROTECTION_DISABLE; hsdram1.Init.SDClockPeriod FMC_SDRAM_CLOCK_PERIOD_2; hsdram1.Init.ReadBurst FMC_SDRAM_RBURST_ENABLE; hsdram1.Init.ReadPipeDelay FMC_SDRAM_RPIPE_DELAY_1; /* SdramTiming */ SdramTiming.LoadToActiveDelay 2; SdramTiming.ExitSelfRefreshDelay 8; SdramTiming.SelfRefreshTime 7; SdramTiming.RowCycleDelay 7; SdramTiming.WriteRecoveryTime 2; SdramTiming.RPDelay 2; SdramTiming.RCDDelay 2; if (HAL_SDRAM_Init(hsdram1, SdramTiming) ! HAL_OK) { Error_Handler( ); } /* USER CODE BEGIN FMC_Init 2 */ sdram_initialization_sequence(); /* USER CODE END FMC_Init 2 */ }这里用到了delay_us在刚才cubemx初始化的时候添加一个tim2的初始化分频用23周期用9并勾选更新中断同时在MX_TIM2_Init添加更新中断开启// tim.c // void MX_TIM2_Init(void) sMasterConfig.MasterOutputTrigger TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(htim2, sMasterConfig) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN TIM2_Init 2 */ // 开启更新中断 __HAL_TIM_ENABLE_IT(htim2, TIM_IT_UPDATE); /* USER CODE END TIM2_Init 2 */新建delay.c增加delay函数volatile uint32_t delay_us_cnt 0; void delay_init(void) { } void delay_us(uint32_t us) { if(us 0) { return ; } delay_us_cnt 0; TIM2-CR1 | 0X01; while(delay_us_cnt us); TIM2-CR1 ~0X01; } void delay_ms(uint32_t ms) { if(ms 0) { return ; } delay_us_cnt 0; TIM2-CR1 | 0X01; while(delay_us_cnt ms * 1000); TIM2-CR1 ~0X01; } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { /* USER CODE BEGIN Callback 0 */ /* USER CODE END Callback 0 */ /* USER CODE BEGIN Callback 1 */ if(htim-Instance TIM2) { delay_us_cnt; } /* USER CODE END Callback 1 */ }初始化完成新建测试代码void sdram_test(void) { uint32_t i; uint32_t temp 0; uint32_t sval 0; // lcd_show_string(x, y, 180, y 16, 16, SDRAM Test: KB, RED); /* 每间隔16KB写入1字数据 */ for (i0; i(64*1024*1024); i(16*1024)) { *(volatile uint32_t *)(SDRAM_BANK_ADDR i) temp; } /* 每间隔16KB读取1字数据进行校验 */ for (i0; i(64*1024*1024); i(16*1024)) { temp *(volatile uint32_t *)(SDRAM_BANK_ADDR i); if ((temp ! 0) (temp sval)) { break; } else { sval temp; } // lcd_show_num(x 12 * 8, y, (temp 1) * 16, 5, 16, BLUE); printf(SDRAM Capacity: %dKB\r\n, (temp 1) * 16); } }这里用到了printf继续在usart.c添加代码以后需要用到printf的地方只需要引入stdio.h文件即可/* USER CODE BEGIN 1 */ __asm(.global __use_no_semihosting); FILE __stdout; void _sys_exit(int x) { x x; } void _ttywrch(int ch) { ch ch; } int fputc(int data, FILE *file) { uint8_t ch (uint8_t)data; HAL_UART_Transmit(huart1, ch, 1, 0xffff); while(!__HAL_UART_GET_FLAG(huart1, UART_FLAG_TXE)); return (data); } /* USER CODE END 1 */在main函数增加测试函数int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); // delay函数用到tim2先初始化tim2 MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); // MX_TIM2_Init(); /* USER CODE BEGIN 2 */ sdram_test(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ }编译--烧录--测试SDRAM测试通过。二、调试QSPI2.1 添加QSPI稳妥起见把刚才的sdram工程备份一下然后在原来的工程上添加QSPI打开sdram.ioc工程添加QSPI对照原理图修改GPIO把速度设置为high前面sdram用到了delaydelay使用tim2完成需要在sdram初始化之前启用tim2修改初始化顺序让tim2先初始化生成代码2.2 添加qspi初始化代码由于想要qspi作为flash使用保存代码所以用内存映射啥也不说借鉴原子哥的代码void MX_QUADSPI_Init(void) { /* USER CODE BEGIN QUADSPI_Init 0 */ QSPI_CommandTypeDef qspi_command_struct {0}; QSPI_AutoPollingTypeDef qspi_autopolling_struct {0}; MPU_Region_InitTypeDef mpu_region_init_struct {0}; QSPI_MemoryMappedTypeDef qspi_memory_mapped_struct {0}; /* USER CODE END QUADSPI_Init 0 */ /* USER CODE BEGIN QUADSPI_Init 1 */ /* USER CODE END QUADSPI_Init 1 */ hqspi.Instance QUADSPI; hqspi.Init.ClockPrescaler 1; hqspi.Init.FifoThreshold 32; hqspi.Init.SampleShifting QSPI_SAMPLE_SHIFTING_HALFCYCLE; hqspi.Init.FlashSize 23; hqspi.Init.ChipSelectHighTime QSPI_CS_HIGH_TIME_6_CYCLE; hqspi.Init.ClockMode QSPI_CLOCK_MODE_0; hqspi.Init.FlashID QSPI_FLASH_ID_1; hqspi.Init.DualFlash QSPI_DUALFLASH_DISABLE; if (HAL_QSPI_Init(hqspi) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN QUADSPI_Init 2 */ /* Enable write Flash 06h */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0x06; qspi_command_struct.AddressMode QSPI_ADDRESS_NONE; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 0; qspi_command_struct.DataMode QSPI_DATA_NONE; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; HAL_QSPI_Command(hqspi, qspi_command_struct, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); /* pool waiting write enable 05h */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0x05; qspi_command_struct.AddressMode QSPI_ADDRESS_NONE; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 0; qspi_command_struct.DataMode QSPI_DATA_1_LINE; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; qspi_autopolling_struct.Match 0x02; qspi_autopolling_struct.Mask 0x02; qspi_autopolling_struct.Interval 0x10; qspi_autopolling_struct.StatusBytesSize 1; qspi_autopolling_struct.MatchMode QSPI_MATCH_MODE_AND; qspi_autopolling_struct.AutomaticStop QSPI_AUTOMATIC_STOP_ENABLE; HAL_QSPI_AutoPolling(hqspi, qspi_command_struct, qspi_autopolling_struct, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); /* config MPU QSPI area */ mpu_region_init_struct.Enable MPU_REGION_ENABLE; mpu_region_init_struct.Number MPU_REGION_NUMBER0; mpu_region_init_struct.BaseAddress QSPI_BASE; mpu_region_init_struct.Size MPU_REGION_SIZE_256MB; mpu_region_init_struct.SubRegionDisable 0x00; mpu_region_init_struct.TypeExtField MPU_TEX_LEVEL0; mpu_region_init_struct.AccessPermission MPU_REGION_FULL_ACCESS; mpu_region_init_struct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE; mpu_region_init_struct.IsShareable MPU_ACCESS_NOT_SHAREABLE; mpu_region_init_struct.IsCacheable MPU_ACCESS_CACHEABLE; mpu_region_init_struct.IsBufferable MPU_ACCESS_BUFFERABLE; HAL_MPU_Disable(); HAL_MPU_ConfigRegion(mpu_region_init_struct); HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT); /* 4 data fast read mem map EBh */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0xEB; qspi_command_struct.AddressMode QSPI_ADDRESS_4_LINES; qspi_command_struct.AddressSize QSPI_ADDRESS_24_BITS; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 6; qspi_command_struct.DataMode QSPI_DATA_4_LINES; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; qspi_memory_mapped_struct.TimeOutActivation QSPI_TIMEOUT_COUNTER_DISABLE; HAL_QSPI_MemoryMapped(hqspi, qspi_command_struct, qspi_memory_mapped_struct); /* USER CODE END QUADSPI_Init 2 */ }添加测试代码 test.c这个代码需要运行在外部flash同时buffer来自内存0xc0000000即sdram上这里同时测试了QSPI和SDRAM// test.c #include main.h #include stdio.h extern uint32_t buffer[250000]; void test_qspi_print(void) { static uint16_t i 0; printf(code running on ex flash buffer:%d \r\n, buffer[i]); i; }这里用到了buffer[250000]来自main.cmain.c关键代码如下#if !(__ARMCC_VERSION 6010050) uint32_t buffer[250000] __attribute__((at(0xC0000000))); #else uint32_t buffer[250000] __attribute__((section(.bss.ARM.__at_0xC0000000))); #endif /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ extern void test_qspi_print(void); /* USER CODE END 0 */ /** * brief The application entry point. * retval int */ int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); /* USER CODE BEGIN 2 */ // sdram_test(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ buffer[i] i; test_qspi_print(); i; HAL_Delay(1000); } /* USER CODE END 3 */ }此外把test.c分配到外部romok开始测试编译--烧录--调试可以看到buffer正确累加并被读取外部flash的打印代码正常运行qspi运行OK。三、调试LTDC在启用touchgfx之前先确认LTDC运行正常3.1 使用cubemx生成LTDC代码至于前面为什么选择LTDC的时候使用888后面图层又使用565呢因为原子手册上说为了节约就使用565gpio设置用cubemx生成的gpio和原子的原理图上gpio相差甚远需要一个一个对照原理图修改并把速度修改为high以上此外还有一个背光口PB5设置为推挽输出还有LTDC的时钟设置一下设置到30MHz原子官方代码有参考频率差不多了点击生成代码3.2 修改初始化代码由于这个RGB屏有个背光需要在初始化之后打开背光/* LTDC init function */ void MX_LTDC_Init(void) { /* USER CODE BEGIN LTDC_Init 0 */ /* USER CODE END LTDC_Init 0 */ LTDC_LayerCfgTypeDef pLayerCfg {0}; /* USER CODE BEGIN LTDC_Init 1 */ /* USER CODE END LTDC_Init 1 */ hltdc.Instance LTDC; hltdc.Init.HSPolarity LTDC_HSPOLARITY_AL; hltdc.Init.VSPolarity LTDC_VSPOLARITY_AL; hltdc.Init.DEPolarity LTDC_DEPOLARITY_AL; hltdc.Init.PCPolarity LTDC_PCPOLARITY_IPC; hltdc.Init.HorizontalSync 3; hltdc.Init.VerticalSync 3; hltdc.Init.AccumulatedHBP 11; hltdc.Init.AccumulatedVBP 11; hltdc.Init.AccumulatedActiveW 811; hltdc.Init.AccumulatedActiveH 491; hltdc.Init.TotalWidth 819; hltdc.Init.TotalHeigh 499; hltdc.Init.Backcolor.Blue 122; hltdc.Init.Backcolor.Green 0; hltdc.Init.Backcolor.Red 0; if (HAL_LTDC_Init(hltdc) ! HAL_OK) { Error_Handler(); } pLayerCfg.WindowX0 0; pLayerCfg.WindowX1 800; pLayerCfg.WindowY0 0; pLayerCfg.WindowY1 480; pLayerCfg.PixelFormat LTDC_PIXEL_FORMAT_RGB565; pLayerCfg.Alpha 255; pLayerCfg.Alpha0 0; pLayerCfg.BlendingFactor1 LTDC_BLENDING_FACTOR1_CA; pLayerCfg.BlendingFactor2 LTDC_BLENDING_FACTOR2_CA; pLayerCfg.FBStartAdress 0xC0000000; pLayerCfg.ImageWidth 800; pLayerCfg.ImageHeight 480; pLayerCfg.Backcolor.Blue 0; pLayerCfg.Backcolor.Green 0; pLayerCfg.Backcolor.Red 100; if (HAL_LTDC_ConfigLayer(hltdc, pLayerCfg, 0) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN LTDC_Init 2 */ // 打开背光 HAL_GPIO_WritePin(BL_GPIO_Port, BL_Pin, GPIO_PIN_SET); /* USER CODE END LTDC_Init 2 */ }添加测试代码由于前面设置LTDC的时候用0XC0000000位置的信息渲染LTDC那直接修改这个位置的内存数据看下LTDC有没有反应#if !(__ARMCC_VERSION 6010050) uint32_t buffer[250000] __attribute__((at(0xC0000000))); #else uint32_t buffer[250000] __attribute__((section(.bss.ARM.__at_0xC0000000))); #endif int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); MX_LTDC_Init(); MX_DMA2D_Init(); /* USER CODE BEGIN 2 */ // sdram_test(); // 直接修改内存数据 for(i 0; i 65530; i) { buffer[i] 0xff; } /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ // test_qspi_print(); // buffer[i] i; // i; // HAL_Delay(1000); } /* USER CODE END 3 */ }编译--烧录--调试颜色看起来不咋地但至少屏幕有反应了把代码备份一下构建touchgfx试试四、添加touchgfx添加DMA2D和CRCCRC是touchgfx必须的校验算法DMA2D为了加速这2个勾选使能就行了不用配置开启LTCD的中断配置cubemx在middleware里面找到touchgfx如果没有就添加touchgfx配置如下这里添加了一个实时操作系统再配置一下点击生成代码完了之后不急着打开点击工程目录下的touchgfx文件修改UI添加UI元素生成代码把之前的0XC0000000测试的代码去掉编译报了很多错这种就是flash空间不足的错误毕竟stm32h750xbhx只有128KB的flash。把资源文件放到qspi的flash空间再次编译通过不能等了烧录测试出来了这就是我想要的图片。touchgfx里面有个touch那肯定得把触摸加上。四、添加触摸触摸的代码就不去折腾了直接用原子哥的代码把关键代码拷贝过来添加到工程修改touch.c修改scanuint8_t gt9xxx_scan(uint8_t mode) { static uint8_t t 0; uint8_t data; uint16_t temp; uint16_t tempsta; uint8_t i; uint8_t buf[4]; uint8_t res 0; t; if (((t % 10) 0) || (t 10)) { gt9xxx_rd_reg(GT9XXX_GSTID_REG, mode, 1); /* 读取触摸点的状态 */ if ((mode 0x80) ((mode 0x0F) g_gt_tnum)) { data 0; gt9xxx_wr_reg(GT9XXX_GSTID_REG, data, 1); /* 清标志 */ } if ((mode 0x0F) ((mode 0x0F) g_gt_tnum)) { temp 0xFFFF (mode 0x0F); /* 将点的个数转换为1的位数匹配tp_dev.sta定义 */ tempsta tp_dev.sta; /* 保存当前的tp_dev.sta值 */ tp_dev.sta (~temp) | TP_PRES_DOWN | TP_CATH_PRES; tp_dev.x[g_gt_tnum - 1] tp_dev.x[0]; /* 保存触点0的数据保存在最后一个上 */ tp_dev.y[g_gt_tnum - 1] tp_dev.y[0]; for (i0; ig_gt_tnum; i) { if (tp_dev.sta (1 i)) /* 触摸点有效 */ { gt9xxx_rd_reg(GT9XXX_TPX_TBL[i], buf, 4); /* 读取XY坐标值 */ if (tp_dev.touchtype 0x01) /* 横屏 */ { tp_dev.x[i] ((uint16_t)buf[1] 8) buf[0]; tp_dev.y[i] ((uint16_t)buf[3] 8) buf[2]; } else /* 竖屏 */ { tp_dev.x[i] 800 - (((uint16_t)buf[3] 8) buf[2]); tp_dev.y[i] ((uint16_t)buf[1] 8) buf[0]; } } } res 1; if ((tp_dev.x[0] 800) || (tp_dev.y[0] 480)) /* 非法数据坐标超出了 */ { if ((mode 0x0F) 1) /* 有其他点有数据则复制第二个触点的数据到第一个触点. */ { tp_dev.x[0] tp_dev.x[1]; tp_dev.y[0] tp_dev.y[1]; t 0; /* 触发一次则会最少连续监测10次从而提高命中率 */ } else /* 非法数据则忽略此次数据还原原来的 */ { tp_dev.x[0] tp_dev.x[g_gt_tnum - 1]; tp_dev.y[0] tp_dev.y[g_gt_tnum - 1]; mode 0x80; tp_dev.sta tempsta; /* 恢复tp_dev.sta */ } } else { t 0; /* 触发一次则会最少连续监测10次从而提高命中率 */ } } } if ((mode 0x8F) 0x80) /* 无触摸点按下 */ { if (tp_dev.sta TP_PRES_DOWN) /* 之前是被按下的 */ { tp_dev.sta ~TP_PRES_DOWN; /* 标记按键松开 */ } else /* 之前就没有被按下 */ { tp_dev.x[0] 0xFFFF; tp_dev.y[0] 0xFFFF; tp_dev.sta 0xE000; /* 清除点有效标记 */ } } if (t 240) { t 10; /* 重新从10开始计数 */ } return res; }添加触摸在main.c初始化添加触摸初始化int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); MX_LTDC_Init(); MX_DMA2D_Init(); MX_CRC_Init(); /* Call PreOsInit function */ MX_TouchGFX_PreOSInit(); /* USER CODE BEGIN 2 */ // sdram_test(); // for(i 0; i 65530; i) // { // buffer[i] 0xff; // } tp_init(); /* USER CODE END 2 */ MX_ThreadX_Init(); /* We should never get here as control is now taken by the scheduler */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ // test_qspi_print(); // buffer[i] i; // i; // HAL_Delay(1000); } /* USER CODE END 3 */ }同时在touchgfx编辑器添加按钮和交互通过屏幕右下角的按键点击互相切换屏幕添加完成生成代码然后在keil工程中把资源文件添加到QSPI的flash区域编译--烧录--调试经过测试代码ok能实现在两张漂亮的图片之前来回切换基础工程搭建完成保存--备份。总结不总结。
创作背景最近想用stm32写一个UI界面不看不知道一看才知道st官方就有现成的UI代码生成器然后马上尝试开干。在网上搜了不少教程跟着弄估计是自己哪里没有弄对一直报hardware fault的错误思来想去哪怕最后去足浴中心抱着漂亮小姐姐想了一整晚都没有想明白到底是哪里弄错了。于是我决定从第一步开始一步一步仔细调仔细看到底是哪里出了问题。硬件主控板使用的正点原子的STM32H750北极星板子4.3‘RGB显示屏软件touchgfxcubemxkeiltouchgfx4.26.1cubemx6.18.1keil5.36 编译使用v6cmsis5.8.0高版本在使用keil进入debug模式时候会运行一些代码跟踪不到甚至失败思路STM32H750内存和闪存都比较捉急于是决定使用板子上的SDRAMQSPI FLASH的方案一步一步开搞。一、调试SDRAM由于STM32H750内存不足肯定是需要加内存的不然touchgfx动不动来点缓存免得又去加内存。1.1 使用cubemx生成SDRAM代码新建cubemx工程设置芯片为stm32h750xbhx配置MPU配置时钟HSE主频480MHzSDRAM位于FMC配置SDRAM这里SDRAM的GPIO基本和北极星原理图一样不用修改不过需要把gpio的速度设置为超高速顺便把串口1配置一下方便调试配置完成之后生成代码1.2 添加sdram初始化代码#define SDRAM_MODEREG_BURST_LENGTH_1 0x00000000 #define SDRAM_MODEREG_BURST_LENGTH_2 0x00000001 #define SDRAM_MODEREG_BURST_LENGTH_4 0x00000002 #define SDRAM_MODEREG_BURST_LENGTH_8 0x00000004 #define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL 0x00000000 #define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED 0x00000008 #define SDRAM_MODEREG_CAS_LATENCY_2 0x00000020 #define SDRAM_MODEREG_CAS_LATENCY_3 0x00000030 #define SDRAM_MODEREG_OPERATING_MODE_STANDARD 0x00000000 #define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED 0x00000000 #define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE 0x00000200 extern SDRAM_HandleTypeDef hsdram1; static void sdram_initialization_sequence(void) { FMC_SDRAM_CommandTypeDef fmc_sdram_command_struct {0}; /* 使能时钟 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_CLK_ENABLE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 至少等待100us */ delay_us(500); /* 预充电 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_PALL; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 自刷新 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_AUTOREFRESH_MODE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 8; fmc_sdram_command_struct.ModeRegisterDefinition 0; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 配置模式寄存器 */ fmc_sdram_command_struct.CommandMode FMC_SDRAM_CMD_LOAD_MODE; fmc_sdram_command_struct.CommandTarget FMC_SDRAM_CMD_TARGET_BANK1; fmc_sdram_command_struct.AutoRefreshNumber 1; fmc_sdram_command_struct.ModeRegisterDefinition SDRAM_MODEREG_BURST_LENGTH_1 | SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL | SDRAM_MODEREG_CAS_LATENCY_2 | SDRAM_MODEREG_OPERATING_MODE_STANDARD | SDRAM_MODEREG_WRITEBURST_MODE_SINGLE; HAL_SDRAM_SendCommand(hsdram1, fmc_sdram_command_struct, 0xFFFF); /* 配置刷新计数器 */ HAL_SDRAM_ProgramRefreshRate(hsdram1, 839); } /* USER CODE END 0 */ SDRAM_HandleTypeDef hsdram1; /* FMC initialization function */ void MX_FMC_Init(void) { /* USER CODE BEGIN FMC_Init 0 */ /* USER CODE END FMC_Init 0 */ FMC_SDRAM_TimingTypeDef SdramTiming {0}; /* USER CODE BEGIN FMC_Init 1 */ /* USER CODE END FMC_Init 1 */ /** Perform the SDRAM1 memory initialization sequence */ hsdram1.Instance FMC_SDRAM_DEVICE; /* hsdram1.Init */ hsdram1.Init.SDBank FMC_SDRAM_BANK1; hsdram1.Init.ColumnBitsNumber FMC_SDRAM_COLUMN_BITS_NUM_9; hsdram1.Init.RowBitsNumber FMC_SDRAM_ROW_BITS_NUM_13; hsdram1.Init.MemoryDataWidth FMC_SDRAM_MEM_BUS_WIDTH_32; hsdram1.Init.InternalBankNumber FMC_SDRAM_INTERN_BANKS_NUM_4; hsdram1.Init.CASLatency FMC_SDRAM_CAS_LATENCY_2; hsdram1.Init.WriteProtection FMC_SDRAM_WRITE_PROTECTION_DISABLE; hsdram1.Init.SDClockPeriod FMC_SDRAM_CLOCK_PERIOD_2; hsdram1.Init.ReadBurst FMC_SDRAM_RBURST_ENABLE; hsdram1.Init.ReadPipeDelay FMC_SDRAM_RPIPE_DELAY_1; /* SdramTiming */ SdramTiming.LoadToActiveDelay 2; SdramTiming.ExitSelfRefreshDelay 8; SdramTiming.SelfRefreshTime 7; SdramTiming.RowCycleDelay 7; SdramTiming.WriteRecoveryTime 2; SdramTiming.RPDelay 2; SdramTiming.RCDDelay 2; if (HAL_SDRAM_Init(hsdram1, SdramTiming) ! HAL_OK) { Error_Handler( ); } /* USER CODE BEGIN FMC_Init 2 */ sdram_initialization_sequence(); /* USER CODE END FMC_Init 2 */ }这里用到了delay_us在刚才cubemx初始化的时候添加一个tim2的初始化分频用23周期用9并勾选更新中断同时在MX_TIM2_Init添加更新中断开启// tim.c // void MX_TIM2_Init(void) sMasterConfig.MasterOutputTrigger TIM_TRGO_RESET; sMasterConfig.MasterSlaveMode TIM_MASTERSLAVEMODE_DISABLE; if (HAL_TIMEx_MasterConfigSynchronization(htim2, sMasterConfig) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN TIM2_Init 2 */ // 开启更新中断 __HAL_TIM_ENABLE_IT(htim2, TIM_IT_UPDATE); /* USER CODE END TIM2_Init 2 */新建delay.c增加delay函数volatile uint32_t delay_us_cnt 0; void delay_init(void) { } void delay_us(uint32_t us) { if(us 0) { return ; } delay_us_cnt 0; TIM2-CR1 | 0X01; while(delay_us_cnt us); TIM2-CR1 ~0X01; } void delay_ms(uint32_t ms) { if(ms 0) { return ; } delay_us_cnt 0; TIM2-CR1 | 0X01; while(delay_us_cnt ms * 1000); TIM2-CR1 ~0X01; } void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) { /* USER CODE BEGIN Callback 0 */ /* USER CODE END Callback 0 */ /* USER CODE BEGIN Callback 1 */ if(htim-Instance TIM2) { delay_us_cnt; } /* USER CODE END Callback 1 */ }初始化完成新建测试代码void sdram_test(void) { uint32_t i; uint32_t temp 0; uint32_t sval 0; // lcd_show_string(x, y, 180, y 16, 16, SDRAM Test: KB, RED); /* 每间隔16KB写入1字数据 */ for (i0; i(64*1024*1024); i(16*1024)) { *(volatile uint32_t *)(SDRAM_BANK_ADDR i) temp; } /* 每间隔16KB读取1字数据进行校验 */ for (i0; i(64*1024*1024); i(16*1024)) { temp *(volatile uint32_t *)(SDRAM_BANK_ADDR i); if ((temp ! 0) (temp sval)) { break; } else { sval temp; } // lcd_show_num(x 12 * 8, y, (temp 1) * 16, 5, 16, BLUE); printf(SDRAM Capacity: %dKB\r\n, (temp 1) * 16); } }这里用到了printf继续在usart.c添加代码以后需要用到printf的地方只需要引入stdio.h文件即可/* USER CODE BEGIN 1 */ __asm(.global __use_no_semihosting); FILE __stdout; void _sys_exit(int x) { x x; } void _ttywrch(int ch) { ch ch; } int fputc(int data, FILE *file) { uint8_t ch (uint8_t)data; HAL_UART_Transmit(huart1, ch, 1, 0xffff); while(!__HAL_UART_GET_FLAG(huart1, UART_FLAG_TXE)); return (data); } /* USER CODE END 1 */在main函数增加测试函数int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); // delay函数用到tim2先初始化tim2 MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); // MX_TIM2_Init(); /* USER CODE BEGIN 2 */ sdram_test(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ } /* USER CODE END 3 */ }编译--烧录--测试SDRAM测试通过。二、调试QSPI2.1 添加QSPI稳妥起见把刚才的sdram工程备份一下然后在原来的工程上添加QSPI打开sdram.ioc工程添加QSPI对照原理图修改GPIO把速度设置为high前面sdram用到了delaydelay使用tim2完成需要在sdram初始化之前启用tim2修改初始化顺序让tim2先初始化生成代码2.2 添加qspi初始化代码由于想要qspi作为flash使用保存代码所以用内存映射啥也不说借鉴原子哥的代码void MX_QUADSPI_Init(void) { /* USER CODE BEGIN QUADSPI_Init 0 */ QSPI_CommandTypeDef qspi_command_struct {0}; QSPI_AutoPollingTypeDef qspi_autopolling_struct {0}; MPU_Region_InitTypeDef mpu_region_init_struct {0}; QSPI_MemoryMappedTypeDef qspi_memory_mapped_struct {0}; /* USER CODE END QUADSPI_Init 0 */ /* USER CODE BEGIN QUADSPI_Init 1 */ /* USER CODE END QUADSPI_Init 1 */ hqspi.Instance QUADSPI; hqspi.Init.ClockPrescaler 1; hqspi.Init.FifoThreshold 32; hqspi.Init.SampleShifting QSPI_SAMPLE_SHIFTING_HALFCYCLE; hqspi.Init.FlashSize 23; hqspi.Init.ChipSelectHighTime QSPI_CS_HIGH_TIME_6_CYCLE; hqspi.Init.ClockMode QSPI_CLOCK_MODE_0; hqspi.Init.FlashID QSPI_FLASH_ID_1; hqspi.Init.DualFlash QSPI_DUALFLASH_DISABLE; if (HAL_QSPI_Init(hqspi) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN QUADSPI_Init 2 */ /* Enable write Flash 06h */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0x06; qspi_command_struct.AddressMode QSPI_ADDRESS_NONE; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 0; qspi_command_struct.DataMode QSPI_DATA_NONE; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; HAL_QSPI_Command(hqspi, qspi_command_struct, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); /* pool waiting write enable 05h */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0x05; qspi_command_struct.AddressMode QSPI_ADDRESS_NONE; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 0; qspi_command_struct.DataMode QSPI_DATA_1_LINE; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; qspi_autopolling_struct.Match 0x02; qspi_autopolling_struct.Mask 0x02; qspi_autopolling_struct.Interval 0x10; qspi_autopolling_struct.StatusBytesSize 1; qspi_autopolling_struct.MatchMode QSPI_MATCH_MODE_AND; qspi_autopolling_struct.AutomaticStop QSPI_AUTOMATIC_STOP_ENABLE; HAL_QSPI_AutoPolling(hqspi, qspi_command_struct, qspi_autopolling_struct, HAL_QSPI_TIMEOUT_DEFAULT_VALUE); /* config MPU QSPI area */ mpu_region_init_struct.Enable MPU_REGION_ENABLE; mpu_region_init_struct.Number MPU_REGION_NUMBER0; mpu_region_init_struct.BaseAddress QSPI_BASE; mpu_region_init_struct.Size MPU_REGION_SIZE_256MB; mpu_region_init_struct.SubRegionDisable 0x00; mpu_region_init_struct.TypeExtField MPU_TEX_LEVEL0; mpu_region_init_struct.AccessPermission MPU_REGION_FULL_ACCESS; mpu_region_init_struct.DisableExec MPU_INSTRUCTION_ACCESS_ENABLE; mpu_region_init_struct.IsShareable MPU_ACCESS_NOT_SHAREABLE; mpu_region_init_struct.IsCacheable MPU_ACCESS_CACHEABLE; mpu_region_init_struct.IsBufferable MPU_ACCESS_BUFFERABLE; HAL_MPU_Disable(); HAL_MPU_ConfigRegion(mpu_region_init_struct); HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT); /* 4 data fast read mem map EBh */ qspi_command_struct.InstructionMode QSPI_INSTRUCTION_1_LINE; qspi_command_struct.Instruction 0xEB; qspi_command_struct.AddressMode QSPI_ADDRESS_4_LINES; qspi_command_struct.AddressSize QSPI_ADDRESS_24_BITS; qspi_command_struct.AlternateByteMode QSPI_ALTERNATE_BYTES_NONE; qspi_command_struct.DummyCycles 6; qspi_command_struct.DataMode QSPI_DATA_4_LINES; qspi_command_struct.DdrMode QSPI_DDR_MODE_DISABLE; qspi_command_struct.DdrHoldHalfCycle QSPI_DDR_HHC_ANALOG_DELAY; qspi_command_struct.SIOOMode QSPI_SIOO_INST_EVERY_CMD; qspi_memory_mapped_struct.TimeOutActivation QSPI_TIMEOUT_COUNTER_DISABLE; HAL_QSPI_MemoryMapped(hqspi, qspi_command_struct, qspi_memory_mapped_struct); /* USER CODE END QUADSPI_Init 2 */ }添加测试代码 test.c这个代码需要运行在外部flash同时buffer来自内存0xc0000000即sdram上这里同时测试了QSPI和SDRAM// test.c #include main.h #include stdio.h extern uint32_t buffer[250000]; void test_qspi_print(void) { static uint16_t i 0; printf(code running on ex flash buffer:%d \r\n, buffer[i]); i; }这里用到了buffer[250000]来自main.cmain.c关键代码如下#if !(__ARMCC_VERSION 6010050) uint32_t buffer[250000] __attribute__((at(0xC0000000))); #else uint32_t buffer[250000] __attribute__((section(.bss.ARM.__at_0xC0000000))); #endif /* Private user code ---------------------------------------------------------*/ /* USER CODE BEGIN 0 */ extern void test_qspi_print(void); /* USER CODE END 0 */ /** * brief The application entry point. * retval int */ int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); /* USER CODE BEGIN 2 */ // sdram_test(); /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ buffer[i] i; test_qspi_print(); i; HAL_Delay(1000); } /* USER CODE END 3 */ }此外把test.c分配到外部romok开始测试编译--烧录--调试可以看到buffer正确累加并被读取外部flash的打印代码正常运行qspi运行OK。三、调试LTDC在启用touchgfx之前先确认LTDC运行正常3.1 使用cubemx生成LTDC代码至于前面为什么选择LTDC的时候使用888后面图层又使用565呢因为原子手册上说为了节约就使用565gpio设置用cubemx生成的gpio和原子的原理图上gpio相差甚远需要一个一个对照原理图修改并把速度修改为high以上此外还有一个背光口PB5设置为推挽输出还有LTDC的时钟设置一下设置到30MHz原子官方代码有参考频率差不多了点击生成代码3.2 修改初始化代码由于这个RGB屏有个背光需要在初始化之后打开背光/* LTDC init function */ void MX_LTDC_Init(void) { /* USER CODE BEGIN LTDC_Init 0 */ /* USER CODE END LTDC_Init 0 */ LTDC_LayerCfgTypeDef pLayerCfg {0}; /* USER CODE BEGIN LTDC_Init 1 */ /* USER CODE END LTDC_Init 1 */ hltdc.Instance LTDC; hltdc.Init.HSPolarity LTDC_HSPOLARITY_AL; hltdc.Init.VSPolarity LTDC_VSPOLARITY_AL; hltdc.Init.DEPolarity LTDC_DEPOLARITY_AL; hltdc.Init.PCPolarity LTDC_PCPOLARITY_IPC; hltdc.Init.HorizontalSync 3; hltdc.Init.VerticalSync 3; hltdc.Init.AccumulatedHBP 11; hltdc.Init.AccumulatedVBP 11; hltdc.Init.AccumulatedActiveW 811; hltdc.Init.AccumulatedActiveH 491; hltdc.Init.TotalWidth 819; hltdc.Init.TotalHeigh 499; hltdc.Init.Backcolor.Blue 122; hltdc.Init.Backcolor.Green 0; hltdc.Init.Backcolor.Red 0; if (HAL_LTDC_Init(hltdc) ! HAL_OK) { Error_Handler(); } pLayerCfg.WindowX0 0; pLayerCfg.WindowX1 800; pLayerCfg.WindowY0 0; pLayerCfg.WindowY1 480; pLayerCfg.PixelFormat LTDC_PIXEL_FORMAT_RGB565; pLayerCfg.Alpha 255; pLayerCfg.Alpha0 0; pLayerCfg.BlendingFactor1 LTDC_BLENDING_FACTOR1_CA; pLayerCfg.BlendingFactor2 LTDC_BLENDING_FACTOR2_CA; pLayerCfg.FBStartAdress 0xC0000000; pLayerCfg.ImageWidth 800; pLayerCfg.ImageHeight 480; pLayerCfg.Backcolor.Blue 0; pLayerCfg.Backcolor.Green 0; pLayerCfg.Backcolor.Red 100; if (HAL_LTDC_ConfigLayer(hltdc, pLayerCfg, 0) ! HAL_OK) { Error_Handler(); } /* USER CODE BEGIN LTDC_Init 2 */ // 打开背光 HAL_GPIO_WritePin(BL_GPIO_Port, BL_Pin, GPIO_PIN_SET); /* USER CODE END LTDC_Init 2 */ }添加测试代码由于前面设置LTDC的时候用0XC0000000位置的信息渲染LTDC那直接修改这个位置的内存数据看下LTDC有没有反应#if !(__ARMCC_VERSION 6010050) uint32_t buffer[250000] __attribute__((at(0xC0000000))); #else uint32_t buffer[250000] __attribute__((section(.bss.ARM.__at_0xC0000000))); #endif int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); MX_LTDC_Init(); MX_DMA2D_Init(); /* USER CODE BEGIN 2 */ // sdram_test(); // 直接修改内存数据 for(i 0; i 65530; i) { buffer[i] 0xff; } /* USER CODE END 2 */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ // test_qspi_print(); // buffer[i] i; // i; // HAL_Delay(1000); } /* USER CODE END 3 */ }编译--烧录--调试颜色看起来不咋地但至少屏幕有反应了把代码备份一下构建touchgfx试试四、添加touchgfx添加DMA2D和CRCCRC是touchgfx必须的校验算法DMA2D为了加速这2个勾选使能就行了不用配置开启LTCD的中断配置cubemx在middleware里面找到touchgfx如果没有就添加touchgfx配置如下这里添加了一个实时操作系统再配置一下点击生成代码完了之后不急着打开点击工程目录下的touchgfx文件修改UI添加UI元素生成代码把之前的0XC0000000测试的代码去掉编译报了很多错这种就是flash空间不足的错误毕竟stm32h750xbhx只有128KB的flash。把资源文件放到qspi的flash空间再次编译通过不能等了烧录测试出来了这就是我想要的图片。touchgfx里面有个touch那肯定得把触摸加上。四、添加触摸触摸的代码就不去折腾了直接用原子哥的代码把关键代码拷贝过来添加到工程修改touch.c修改scanuint8_t gt9xxx_scan(uint8_t mode) { static uint8_t t 0; uint8_t data; uint16_t temp; uint16_t tempsta; uint8_t i; uint8_t buf[4]; uint8_t res 0; t; if (((t % 10) 0) || (t 10)) { gt9xxx_rd_reg(GT9XXX_GSTID_REG, mode, 1); /* 读取触摸点的状态 */ if ((mode 0x80) ((mode 0x0F) g_gt_tnum)) { data 0; gt9xxx_wr_reg(GT9XXX_GSTID_REG, data, 1); /* 清标志 */ } if ((mode 0x0F) ((mode 0x0F) g_gt_tnum)) { temp 0xFFFF (mode 0x0F); /* 将点的个数转换为1的位数匹配tp_dev.sta定义 */ tempsta tp_dev.sta; /* 保存当前的tp_dev.sta值 */ tp_dev.sta (~temp) | TP_PRES_DOWN | TP_CATH_PRES; tp_dev.x[g_gt_tnum - 1] tp_dev.x[0]; /* 保存触点0的数据保存在最后一个上 */ tp_dev.y[g_gt_tnum - 1] tp_dev.y[0]; for (i0; ig_gt_tnum; i) { if (tp_dev.sta (1 i)) /* 触摸点有效 */ { gt9xxx_rd_reg(GT9XXX_TPX_TBL[i], buf, 4); /* 读取XY坐标值 */ if (tp_dev.touchtype 0x01) /* 横屏 */ { tp_dev.x[i] ((uint16_t)buf[1] 8) buf[0]; tp_dev.y[i] ((uint16_t)buf[3] 8) buf[2]; } else /* 竖屏 */ { tp_dev.x[i] 800 - (((uint16_t)buf[3] 8) buf[2]); tp_dev.y[i] ((uint16_t)buf[1] 8) buf[0]; } } } res 1; if ((tp_dev.x[0] 800) || (tp_dev.y[0] 480)) /* 非法数据坐标超出了 */ { if ((mode 0x0F) 1) /* 有其他点有数据则复制第二个触点的数据到第一个触点. */ { tp_dev.x[0] tp_dev.x[1]; tp_dev.y[0] tp_dev.y[1]; t 0; /* 触发一次则会最少连续监测10次从而提高命中率 */ } else /* 非法数据则忽略此次数据还原原来的 */ { tp_dev.x[0] tp_dev.x[g_gt_tnum - 1]; tp_dev.y[0] tp_dev.y[g_gt_tnum - 1]; mode 0x80; tp_dev.sta tempsta; /* 恢复tp_dev.sta */ } } else { t 0; /* 触发一次则会最少连续监测10次从而提高命中率 */ } } } if ((mode 0x8F) 0x80) /* 无触摸点按下 */ { if (tp_dev.sta TP_PRES_DOWN) /* 之前是被按下的 */ { tp_dev.sta ~TP_PRES_DOWN; /* 标记按键松开 */ } else /* 之前就没有被按下 */ { tp_dev.x[0] 0xFFFF; tp_dev.y[0] 0xFFFF; tp_dev.sta 0xE000; /* 清除点有效标记 */ } } if (t 240) { t 10; /* 重新从10开始计数 */ } return res; }添加触摸在main.c初始化添加触摸初始化int main(void) { /* USER CODE BEGIN 1 */ uint16_t i 0; /* USER CODE END 1 */ /* MPU Configuration--------------------------------------------------------*/ MPU_Config(); /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* Configure the peripherals common clocks */ PeriphCommonClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_TIM2_Init(); MX_FMC_Init(); MX_USART1_UART_Init(); MX_QUADSPI_Init(); MX_LTDC_Init(); MX_DMA2D_Init(); MX_CRC_Init(); /* Call PreOsInit function */ MX_TouchGFX_PreOSInit(); /* USER CODE BEGIN 2 */ // sdram_test(); // for(i 0; i 65530; i) // { // buffer[i] 0xff; // } tp_init(); /* USER CODE END 2 */ MX_ThreadX_Init(); /* We should never get here as control is now taken by the scheduler */ /* Infinite loop */ /* USER CODE BEGIN WHILE */ while (1) { /* USER CODE END WHILE */ /* USER CODE BEGIN 3 */ // test_qspi_print(); // buffer[i] i; // i; // HAL_Delay(1000); } /* USER CODE END 3 */ }同时在touchgfx编辑器添加按钮和交互通过屏幕右下角的按键点击互相切换屏幕添加完成生成代码然后在keil工程中把资源文件添加到QSPI的flash区域编译--烧录--调试经过测试代码ok能实现在两张漂亮的图片之前来回切换基础工程搭建完成保存--备份。总结不总结。
