STM32F429IG用控制器驱动LQ035NC111

sky_fly

请高手帮忙分析一下，我用STM32F429IG控制器驱动LQ035NC111，将原来的480X272的程序改为320X240的程序：

1. [font=Arial][/font]//STM32F4x9_uCOSIII\Utilities\STM32_EVAL\STM324x9I_EVAL\stm324x9i_eval_lcd.c
3. static uint32_t CurrentLcd = USE_LCD_AM320240;
4. static uint32_t LCD_PIXEL_WIDTH  = 320;
5. static uint32_t LCD_PIXEL_HEIGHT = 240;
7. #define HW 40
8. #define VW 2
9. #define HBP 20
10. #define VBP 73
11. #define HFP 20
12. #define VFP 4

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void LCD_Init(void)函数中的：

1. //STM32F4x9_uCOSIII\Utilities\STM32_EVAL\STM324x9I_EVAL\stm324x9i_eval_lcd
3. LCD_PIXEL_WIDTH = 320;
4. LCD_PIXEL_HEIGHT = 240;
6. /* Configure PLLSAI prescalers for LCD */
7. /* Enable Pixel Clock */
8. /* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
9. /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAI_N = 192 Mhz */
10. /* PLLLCDCLK = PLLSAI_VCO Output/PLLSAI_R = 192/3 = 64 Mhz */
11. /* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64/8 = 8 Mhz */
12. RCC_PLLSAIConfig(192, 7, 4);
13. RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div8);
15. /* Enable PLLSAI Clock */
16. RCC_PLLSAICmd(ENABLE);
17. /* Wait for PLLSAI activation */
18. while(RCC_GetFlagStatus(RCC_FLAG_PLLSAIRDY) == RESET)
19. {
20. }
22. /* Timing configuration */
23. /* Horizontal synchronization width = Hsync - 1 */
24. LTDC_InitStruct.LTDC_HorizontalSync = HW;
25. /* Vertical synchronization height = Vsync - 1 */
26. LTDC_InitStruct.LTDC_VerticalSync = VW;
27. /* Accumulated horizontal back porch = Hsync + HBP - 1 */
28. LTDC_InitStruct.LTDC_AccumulatedHBP = HW+HBP;
29. /* Accumulated vertical back porch = Vsync + VBP - 1 */
30. LTDC_InitStruct.LTDC_AccumulatedVBP = VW+VBP;
31. /* Accumulated active width = Hsync + HBP + Active Width - 1 */
32. LTDC_InitStruct.LTDC_AccumulatedActiveW = HW+HBP+LCD_PIXEL_WIDTH;
33. /* Accumulated active height = Vsync + VBP + Active Heigh - 1 */
34. LTDC_InitStruct.LTDC_AccumulatedActiveH = VW+VBP+LCD_PIXEL_HEIGHT;
35. /* Total width = Hsync + HBP + Active Width + HFP - 1 */
36. LTDC_InitStruct.LTDC_TotalWidth = HW+HBP+LCD_PIXEL_WIDTH+HFP;
37. /* Total height = Vsync + VBP + Active Heigh + VFP - 1 */
38. LTDC_InitStruct.LTDC_TotalHeigh = VW+VBP+LCD_PIXEL_HEIGHT+VFP;

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void LCD_LayerInit(void)函数中的：

1. //STM32F4x9_uCOSIII\Utilities\STM32_EVAL\STM324x9I_EVAL\stm324x9i_eval_lcd.c
3. LTDC_Layer_InitStruct.LTDC_HorizontalStart = 1+HBP+50;
4. LTDC_Layer_InitStruct.LTDC_HorizontalStop = (LCD_PIXEL_WIDTH +HBP+50 );
5. LTDC_Layer_InitStruct.LTDC_VerticalStart = 1+VBP;
6. LTDC_Layer_InitStruct.LTDC_VerticalStop = (LCD_PIXEL_HEIGHT + VBP );

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1. //STM32F4x9_uCOSIII\Utilities\STM32_EVAL\STM324x9I_EVAL\stm324x9i_eval_lcd.c
3. void LCD_CheckDevice(void)
4. {
5. CurrentLcd = USE_LCD_AM320240;
6. }

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1. //STM32F4x9_uCOSIII\Utilities\STM32_EVAL\STM324x9I_EVAL\stm324x9i_eval_lcd.h
2. typedef enum
3. {
4. USE_LCD_AM640480 = 0, /*!< LCD Ampire 640x480 */
5. USE_LCD_AM480272 = 1, /*!< LCD Ampire 480x272 */
6. USE_LCD_AM320240 = 2, /*!< LCD Ampire 320x240 */
7. } LCD_Used;

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1. //STM32F4x9_uCOSIII\Utilities\STM32_EVAL\Common\lcd_log.h
3. #define PIXEL_WIDTH 320
4. #define PIXEL_HEIGHT 240

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接线应该没错，显示屏标题显示正常（字体及背景），但时序参数修改后就不正常了，哪怕是在要求范围内，不知道问题出在哪里？

sky_fly

STM32F4x9_uCOSIII.zip (33.52 MB, 下载次数: 4213)

2014-8-7 16:54 上传

点击文件名下载附件

程序代码

sky_fly

LQ035NC111 LQ035NC111 V01(1)_样品.pdf (1.47 MB, 下载次数: 952)

2014-8-7 17:02 上传

点击文件名下载附件
LQ035NC111

szu_lsh

帮顶，有懂的帮忙解答下。

sky_fly

终于找到问题了，弄了半天，原来没把DE拉低

eric2013

sky_fly:终于找到问题了，弄了半天，原来没把DE拉低
 (2014-08-09 16:33) 

谢谢楼主告知解决办法

a317606001

[s:139] 下载下来，怎么打不开。  我也在使用这个屏，不知道楼主的硬件怎么连接的。

a317606001

[s:138] 相同的方法解决

hefengweifu

用STM32F429IG控制器驱动LQ035NC111的硬件连接电路原理图能发一个给我吗？邮箱：915933575@qq.com！灰常感谢！