NXP / Mbed OS rt1050_emwin_gui_demo

RT1050 GUI demo using emWin library

source/board.c@0:dd702039127a, 2018-09-20 (annotated)

Committer:
alejandroRL
Date:
Thu Sep 20 19:16:34 2018 +0000
Revision:
0:dd702039127a
emWin GUI Demo for RT1050

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alejandroRL 0:dd702039127a 1 #include "board.h"
alejandroRL 0:dd702039127a 2 #include "fsl_gpio.h"
alejandroRL 0:dd702039127a 3 #include "fsl_clock_config.h"
alejandroRL 0:dd702039127a 4 #include "emwin_support.h"
alejandroRL 0:dd702039127a 5
alejandroRL 0:dd702039127a 6 /* Initialize the LCD_DISP. */
alejandroRL 0:dd702039127a 7 void BOARD_InitLcd(void)
alejandroRL 0:dd702039127a 8 {
alejandroRL 0:dd702039127a 9 volatile uint32_t i = 0x100U;
alejandroRL 0:dd702039127a 10
alejandroRL 0:dd702039127a 11 gpio_pin_config_t config = {
alejandroRL 0:dd702039127a 12 kGPIO_DigitalOutput, 0,
alejandroRL 0:dd702039127a 13 };
alejandroRL 0:dd702039127a 14
alejandroRL 0:dd702039127a 15 /* Reset the LCD. */
alejandroRL 0:dd702039127a 16 GPIO_PinInit(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, &config);
alejandroRL 0:dd702039127a 17
alejandroRL 0:dd702039127a 18 GPIO_WritePinOutput(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, 0);
alejandroRL 0:dd702039127a 19
alejandroRL 0:dd702039127a 20 while (i--)
alejandroRL 0:dd702039127a 21 {
alejandroRL 0:dd702039127a 22 }
alejandroRL 0:dd702039127a 23
alejandroRL 0:dd702039127a 24 GPIO_WritePinOutput(LCD_DISP_GPIO, LCD_DISP_GPIO_PIN, 1);
alejandroRL 0:dd702039127a 25
alejandroRL 0:dd702039127a 26 /* Backlight. */
alejandroRL 0:dd702039127a 27 config.outputLogic = 1;
alejandroRL 0:dd702039127a 28 GPIO_PinInit(LCD_BL_GPIO, LCD_BL_GPIO_PIN, &config);
alejandroRL 0:dd702039127a 29
alejandroRL 0:dd702039127a 30 /*Clock setting for LPI2C*/
alejandroRL 0:dd702039127a 31 CLOCK_SetMux(kCLOCK_Lpi2cMux, LPI2C_CLOCK_SOURCE_SELECT);
alejandroRL 0:dd702039127a 32 CLOCK_SetDiv(kCLOCK_Lpi2cDiv, LPI2C_CLOCK_SOURCE_DIVIDER);
alejandroRL 0:dd702039127a 33 }
alejandroRL 0:dd702039127a 34
alejandroRL 0:dd702039127a 35 void BOARD_InitLcdifPixelClock(void)
alejandroRL 0:dd702039127a 36 {
alejandroRL 0:dd702039127a 37 /*
alejandroRL 0:dd702039127a 38 * The desired output frame rate is 60Hz. So the pixel clock frequency is:
alejandroRL 0:dd702039127a 39 * (480 + 41 + 4 + 18) * (272 + 10 + 4 + 2) * 60 = 9.2M.
alejandroRL 0:dd702039127a 40 * Here set the LCDIF pixel clock to 9.3M.
alejandroRL 0:dd702039127a 41 */
alejandroRL 0:dd702039127a 42
alejandroRL 0:dd702039127a 43 /*
alejandroRL 0:dd702039127a 44 * Initialize the Video PLL.
alejandroRL 0:dd702039127a 45 * Video PLL output clock is OSC24M * (loopDivider + (denominator / numerator)) / postDivider = 93MHz.
alejandroRL 0:dd702039127a 46 */
alejandroRL 0:dd702039127a 47 clock_video_pll_config_t config = {
alejandroRL 0:dd702039127a 48 .loopDivider = 31, .postDivider = 8, .numerator = 0, .denominator = 0,
alejandroRL 0:dd702039127a 49 };
alejandroRL 0:dd702039127a 50
alejandroRL 0:dd702039127a 51 CLOCK_InitVideoPll(&config);
alejandroRL 0:dd702039127a 52
alejandroRL 0:dd702039127a 53 /*
alejandroRL 0:dd702039127a 54 * 000 derive clock from PLL2
alejandroRL 0:dd702039127a 55 * 001 derive clock from PLL3 PFD3
alejandroRL 0:dd702039127a 56 * 010 derive clock from PLL5
alejandroRL 0:dd702039127a 57 * 011 derive clock from PLL2 PFD0
alejandroRL 0:dd702039127a 58 * 100 derive clock from PLL2 PFD1
alejandroRL 0:dd702039127a 59 * 101 derive clock from PLL3 PFD1
alejandroRL 0:dd702039127a 60 */
alejandroRL 0:dd702039127a 61 CLOCK_SetMux(kCLOCK_LcdifPreMux, 2);
alejandroRL 0:dd702039127a 62
alejandroRL 0:dd702039127a 63 CLOCK_SetDiv(kCLOCK_LcdifPreDiv, 4);
alejandroRL 0:dd702039127a 64
alejandroRL 0:dd702039127a 65 CLOCK_SetDiv(kCLOCK_LcdifDiv, 1);
alejandroRL 0:dd702039127a 66 }