add printf code

Author: miaolei7456

bsp/renesas/ra4e2-ek/ra/fsp/src/bsp/cmsis/Device/RENESAS/Source/startup.c

@@ -50,7 +50,12 @@ void Reset_Handler (void)
     SystemInit();
 
     /* Call user application. */
+#ifdef __ARMCC_VERSION
     main();
+#elif defined(__GNUC__)
+    extern int entry(void);
+    entry();
+#endif
 
     while (1)
     {

bsp/renesas/ra4e2-ek/src/hal_entry.c

@@ -12,46 +12,21 @@ void hal_entry(void)
 {
     /* TODO: add your own code here */
 
+    rt_kprintf("\nHello RT-Thread!\n");
+
+    while (1)
+    {
+        // rt_pin_write(LED1_PIN, PIN_HIGH);
+        // rt_thread_mdelay(500);
+        // rt_pin_write(LED1_PIN, PIN_LOW);
+        // rt_thread_mdelay(500);
+    }
 #if BSP_TZ_SECURE_BUILD
     /* Enter non-secure code */
     R_BSP_NonSecureEnter();
 #endif
 }
 
-/*******************************************************************************************************************//**
- * This function is called at various points during the startup process.  This implementation uses the event that is
- * called right before main() to set up the pins.
- *
- * @param[in]  event    Where at in the start up process the code is currently at
- **********************************************************************************************************************/
-void R_BSP_WarmStart (bsp_warm_start_event_t event)
-{
-    if (BSP_WARM_START_RESET == event)
-    {
-#if BSP_FEATURE_FLASH_LP_VERSION != 0
-
-        /* Enable reading from data flash. */
-        R_FACI_LP->DFLCTL = 1U;
-
-        /* Would normally have to wait tDSTOP(6us) for data flash recovery. Placing the enable here, before clock and
-         * C runtime initialization, should negate the need for a delay since the initialization will typically take more than 6us. */
-#endif
-    }
-
-    if (BSP_WARM_START_POST_C == event)
-    {
-        /* C runtime environment and system clocks are setup. */
-
-        /* Configure pins. */
-        R_IOPORT_Open(&IOPORT_CFG_CTRL, &IOPORT_CFG_NAME);
-
-#if BSP_CFG_SDRAM_ENABLED
-
-        /* Setup SDRAM and initialize it. Must configure pins first. */
-        R_BSP_SdramInit(true);
-#endif
-    }
-}
 
 #if BSP_TZ_SECURE_BUILD