Fixed misplacement of prototypes in ll_tft.h and implemented a propper init function.

common/lowlevel/ll_tft.h

@@ -3,16 +3,6 @@
 
 // init functions
 bool ll_tft_init();
-bool ll_fsmc_init();
-bool ll_gpio_init();
-
-// display control functions
-void ll_tft_write_reg(uint8_t reg_adr, uint16_t reg_value);
-uint16_t ll_tft_read_reg(uint8_t reg_adr);
-
-// fsmc functions
-
-// gpio functions
 
 // draw functions
 void ll_tft_clear(uint16_t color);

discovery/src/ll_system.c

@@ -8,14 +8,10 @@
 #include "usbh_core.h"
 #include "usbh_msc_core.h"
 
-
-
-
 USB_OTG_CORE_HANDLE          USB_OTG_Core;
 USBH_HOST                    USB_Host;
 RCC_ClocksTypeDef RCC_Clocks;
 
-
 void SysTick_Handler(void)
 {
   USBH_LL_systick();
@@ -26,13 +22,11 @@ void TIM2_IRQHandler(void)
   USB_OTG_BSP_TimerIRQ();
 }
 
-
 void OTG_FS_IRQHandler(void)
 {
   USBH_OTG_ISR_Handler(&USB_OTG_Core);
 }
 
-
 bool ll_system_init(void)
 { 
   /* Initialize LEDS */
@@ -59,13 +53,10 @@ void ll_system_process() {
 	USBH_Process(&USB_OTG_Core, &USB_Host);
 }
 
-
-
 void ll_system_delay(uint32_t msec) {
 	USB_OTG_BSP_mDelay(msec);
 }
 
-
 void ll_system_toggle_led() {	
 	STM_EVAL_LEDToggle(LED6);
 }

discovery/src/ll_tft.c

@@ -22,9 +22,23 @@
 #include "stm32f4xx_rcc.h"
 #include "stm32f4xx_fsmc.h"
 
+/*
+ * ---------------------- prototypes --------------------------------------------------------------
+ */
+
+// init functions
+bool ll_fsmc_init();
+bool ll_gpio_init();
+bool ll_display_init();
+
+// display control functions
+void ll_tft_write_reg(uint8_t reg_adr, uint16_t reg_value);
+uint16_t ll_tft_read_reg(uint8_t reg_adr);
+
 /*
  * ---------------------- defines and makros ------------------------------------------------------
  */
+
 // Colors
 #define DISPLAY_COLOR_BLACK          0x0000
 #define DISPLAY_COLOR_BLUE           0x001F
@@ -71,6 +85,24 @@
  */
 
 bool ll_tft_init()
+{
+    bool gpio, fsmc, display;
+
+    // init gpio
+    gpio = ll_gpio_init();
+    // delay
+    system_delay(TFT_INIT_TIMEOUT);
+    // init fsmc
+    fsmc = ll_fsmc_init();
+    // delay
+    system_delay(TFT_INIT_TIMEOUT);
+    // init display
+    display = ll_display_init();
+    
+    return (gpio & fsmc & display);
+}
+
+bool ll_display_init() 
 {
     ll_tft_write_reg(0x0007,0x0021);
     system_delay(TFT_INIT_TIMEOUT);