[STM32L5] 【STM32L562 DK试用】基础外设体验

开发板自带了一块240*240分辨率的触摸屏：

本次基于官方demo进行修改，从而在屏幕上显示相应的文字。首先进行系统和时钟的初始化：

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1. HAL_StatusTypeDef HAL_Init(void)
2. {
3. HAL_StatusTypeDef status = HAL_OK;
4. /* Set Interrupt Group Priority */
5. HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_3);
6. /* Insure time base clock coherency */
7. SystemCoreClockUpdate();
8. /* Use SysTick as time base source and configure 1ms tick (default clock after Reset is MSI) */
9. if (HAL_InitTick(TICK_INT_PRIORITY) != HAL_OK)
10. {
11. status = HAL_ERROR;
12. }
13. else
14. {
15. /* Init the low level hardware */
16. HAL_MspInit();
17. }
18. /* Return function status */
19. return status;
20. }

然后进行相关HMI设备和LED等的初始化：

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1. static void SystemHardwareInit(void)
2. {
3. /* Init LEDs */
4. if (LedInitialized != SET)
5. {
6. if (BSP_LED_Init(LED9) != BSP_ERROR_NONE)
7. {
8. Error_Handler();
9. }
10. if (BSP_LED_Init(LED10) != BSP_ERROR_NONE)
11. {
12. Error_Handler();
13. }
14. LedInitialized = SET;
15. }
16. /* Init User push-button in EXTI Mode */
17. if (ButtonInitialized != SET)
18. {
19. if (BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI) != BSP_ERROR_NONE)
20. {
21. Error_Handler();
22. }
23. ButtonInitialized = SET;
24. }
25. /* Initialize the LCD */
26. if (LcdInitialized != SET)
27. {
28. LCD_UTILS_Drv_t lcdDrv;
29. /* Initialize the LCD */
30. if (BSP_LCD_Init(0, LCD_ORIENTATION_PORTRAIT) != BSP_ERROR_NONE)
31. {
32. Error_Handler();
33. }
34. /* Set UTIL_LCD functions */
35. lcdDrv.DrawBitmap = BSP_LCD_DrawBitmap;
36. lcdDrv.FillRGBRect = BSP_LCD_FillRGBRect;
37. lcdDrv.DrawHLine = BSP_LCD_DrawHLine;
38. lcdDrv.DrawVLine = BSP_LCD_DrawVLine;
39. lcdDrv.FillRect = BSP_LCD_FillRect;
40. lcdDrv.GetPixel = BSP_LCD_ReadPixel;
41. lcdDrv.SetPixel = BSP_LCD_WritePixel;
42. lcdDrv.GetXSize = BSP_LCD_GetXSize;
43. lcdDrv.GetYSize = BSP_LCD_GetYSize;
44. lcdDrv.SetLayer = BSP_LCD_SetActiveLayer;
45. lcdDrv.GetFormat = BSP_LCD_GetFormat;
46. UTIL_LCD_SetFuncDriver(&lcdDrv);
47. /* Clear the LCD */
48. UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);
49. /* Set the display on */
50. if (BSP_LCD_DisplayOn(0) != BSP_ERROR_NONE)
51. {
52. Error_Handler();
53. }
54. LcdInitialized = SET;
55. }
56. /* Initialize the TouchScreen */
57. if (TsInitialized != SET)
58. {
59. TS_Init_t TsInit;
60. /* Initialize the TouchScreen */
61. TsInit.Width = 240;
62. TsInit.Height = 240;
63. TsInit.Orientation = TS_ORIENTATION_PORTRAIT;
64. TsInit.Accuracy = 10;
65. if (BSP_TS_Init(0, &TsInit) != BSP_ERROR_NONE)
66. {
67. Error_Handler();
68. }
69. /* Configure TS interrupt */
70. if (BSP_TS_EnableIT(0) != BSP_ERROR_NONE)
71. {
72. Error_Handler();
73. }
74. TsInitialized = SET;
75. }
76. }

调用屏幕API进行显示：

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1. static void Display_DemoDescription(void)
2. {
3. char desc[60];
4. /* Set font */
5. UTIL_LCD_SetFont(&Font20);
6. /* Clear the LCD */
7. UTIL_LCD_Clear(UTIL_LCD_COLOR_WHITE);
8. /* Set the LCD Text Color */
9. UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_DARKBLUE);
10. UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_WHITE);
11. /* Display LCD messages */
12. UTIL_LCD_DisplayStringAt(0, 10, (uint8_t *)"STM32L562E-DK BSP", CENTER_MODE);
13. UTIL_LCD_DisplayStringAt(0, 35, (uint8_t *)"drivers example", CENTER_MODE);
14. /* Draw Bitmap */
15. UTIL_LCD_DrawBitmap(80, 65, (uint8_t *)st**);
16. UTIL_LCD_SetFont(&Font8);
17. UTIL_LCD_DisplayStringAt(0, 220, (uint8_t *)"Copyright (c) STMicroelectronics 2019", CENTER_MODE);
18. UTIL_LCD_SetFont(&Font12);
19. UTIL_LCD_FillRect(0, 145, 240, 50, UTIL_LCD_COLOR_BLUE);
20. UTIL_LCD_SetTextColor(UTIL_LCD_COLOR_WHITE);
21. UTIL_LCD_SetBackColor(UTIL_LCD_COLOR_BLUE);
22. UTIL_LCD_DisplayStringAt(0, 135, (uint8_t *)"Hello 21IC", CENTER_MODE);
23. UTIL_LCD_DisplayStringAt(0, 150, (uint8_t *)"Press User push-button", CENTER_MODE);
24. UTIL_LCD_DisplayStringAt(0, 165, (uint8_t *)"to start :", CENTER_MODE);
25. sprintf(desc,"%s example", BSP_examples[DemoIndex].DemoName);
26. UTIL_LCD_DisplayStringAt(0, 180, (uint8_t *)desc, CENTER_MODE);
27. }

显示效果：

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作者：lishuihua
链接：https://bbs.21ic.com/forum.php?mod=viewthread&tid=3437260
来源：21ic.com
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