【TouchGFX】使用CubeMX创建touchgfx项目 -- 初始篇

1、系统构成，黑色块表示组件非必须

2、环境准备

CubeMX：6.0.1

touchgfx：4.15.0

rt-thread：2020-8-14 commit

Keil：5.30

board：stm32f429igt6 + SDRAM-256Mb（16M x 16）+  SPI-FLASH-16MB + LCD-1024*600

3、打开CubeMX开始创建项目

3.1、安装软件包touchgfx最新版本4.15.0

3.2、系统时钟源RCC配置

3.3、系统调试口及时基SYS配置

3.4、配置SDRAM--W9825G6KH，电气参数及管脚配置

参考博文【链接一】【链接二】

3.5、配置SPI-FLASH--W25Q128JVSQ

3.6、配置图形加速器 ChromART

3.7、显示LTDC接口配置

3.8、触摸芯片I2C接口配置

3.9、组件CRC激活，TouchGFX需要

3.10、加入freertos操作系统，目的是生成touchgfx与操作系统接口文件，方便移植rt-thread，参数配置保持默认即可

3.11、在附加软件管理器中选择TouchGFX用以生成其代码，并做相关配置

3.12、IO口配置，LCD复位、背光，FLASH片选，LED等

3.13、时钟树配置

3.14、生成工程

3.15、直接打开生成的Keil工程编译会报错，这是因为这些文件都是TouchGFX Designer生成，所以需要使用TouchGFX Designer 先生成代码

3.16、打开CubeMX生成的TouchGFX Designer模板工程，加入TEXT、BOX和BUTTON控件后生成touchgfx代码

3.17、再次编译Keil工程

4、补全工程，使之能运行起来

4.1、加入SDRAM配置代码

 1 #define REFRESH_COUNT                               636//1000//1755//636
 2 #define SDRAM_TIMEOUT                               ((uint32_t)0xFFFF)
 3 #define SDRAM_MODEREG_BURST_LENGTH_1                ((uint32_t)0x0000)
 4 #define SDRAM_MODEREG_BURST_LENGTH_2                ((uint32_t)0x0001)
 5 #define SDRAM_MODEREG_BURST_LENGTH_4                ((uint32_t)0x0002)
 6 #define SDRAM_MODEREG_BURST_LENGTH_8                ((uint32_t)0x0004)
 7 #define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL         ((uint32_t)0x0000)
 8 #define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED        ((uint32_t)0x0008)
 9 #define SDRAM_MODEREG_CAS_LATENCY_2                 ((uint32_t)0x0020)
10 #define SDRAM_MODEREG_CAS_LATENCY_3                 ((uint32_t)0x0030)
11 #define SDRAM_MODEREG_OPERATING_MODE_STANDARD       ((uint32_t)0x0000)
12 #define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED    ((uint32_t)0x0000)
13 #define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE        ((uint32_t)0x0200)
14
15 /**
16   * @brief  Programs the SDRAM device.
17   * @retval None
18   */
19 void MX_SDRAM_InitEx(void)
20 {
21     __IO uint32_t tmpmrd = 0;
22     FMC_SDRAM_CommandTypeDef Command;
23
24     /* Step 1: Configure a clock configuration enable command */
25     Command.CommandMode            = FMC_SDRAM_CMD_CLK_ENABLE;
26     Command.CommandTarget          = FMC_SDRAM_CMD_TARGET_BANK1;
27     Command.AutoRefreshNumber      = 1;
28     Command.ModeRegisterDefinition = 0;
29
30     /* Send the command */
31     HAL_SDRAM_SendCommand(&hsdram1, &Command, SDRAM_TIMEOUT);
32
33     /* Step 2: Insert 100 us minimum delay */
34     /* Inserted delay is equal to 1 ms due to systick time base unit (ms) */
35     HAL_Delay(1);
36
37     /* Step 3: Configure a PALL (precharge all) command */
38     Command.CommandMode            = FMC_SDRAM_CMD_PALL;
39     Command.CommandTarget          = FMC_SDRAM_CMD_TARGET_BANK1;
40     Command.AutoRefreshNumber      = 1;
41     Command.ModeRegisterDefinition = 0;
42
43     /* Send the command */
44     HAL_SDRAM_SendCommand(&hsdram1, &Command, SDRAM_TIMEOUT);
45
46     /* Step 4: Configure an Auto Refresh command */
47     Command.CommandMode            = FMC_SDRAM_CMD_AUTOREFRESH_MODE;
48     Command.CommandTarget          = FMC_SDRAM_CMD_TARGET_BANK1;
49     Command.AutoRefreshNumber      = 8;
50     Command.ModeRegisterDefinition = 0;
51
52     /* Send the command */
53     HAL_SDRAM_SendCommand(&hsdram1, &Command, SDRAM_TIMEOUT);
54
55     /* Step 5: Program the external memory mode register */
56     tmpmrd = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1          | \
57              SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL   | \
58              SDRAM_MODEREG_CAS_LATENCY_3           | \
59              SDRAM_MODEREG_OPERATING_MODE_STANDARD | \
60              SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
61
62     Command.CommandMode            = FMC_SDRAM_CMD_LOAD_MODE;
63     Command.CommandTarget          = FMC_SDRAM_CMD_TARGET_BANK1;
64     Command.AutoRefreshNumber      = 1;
65     Command.ModeRegisterDefinition = tmpmrd;
66
67     /* Send the command */
68     HAL_SDRAM_SendCommand(&hsdram1, &Command, SDRAM_TIMEOUT);
69
70     /* Step 6: Set the refresh rate counter */
71     /* Set the device refresh rate */
72     HAL_SDRAM_ProgramRefreshRate(&hsdram1, REFRESH_COUNT);
73 }

4.2、加入SPI-FLASH驱动

4.3、加入触摸驱动

5、FAQ

5.1、LTDC刷新频率过高导致的屏幕闪烁错位情况，相同硬件第一次设置25M工作正常，第二次25M就出现下面现象，修改为23M后工作正常，感觉会变很奇怪

                

5.2 、framebuffer过小导致的显示断屏错位，大小应该是分辨率×色深 (800×480×3) Byte

5.3、FT5436触摸IC获取第一点触摸Y坐标概率性负值，即MSB是1，须转为正值 ，可 & 0x7FFF，否则造成触摸间歇性失效，如 drag 效果达不到