From ecc8db0cd66413eec9231c80c4b51456007ecc45 Mon Sep 17 00:00:00 2001
From: weety <luohui2320@gmail.com>
Date: Sat, 21 Oct 2017 17:37:10 +0800
Subject: [PATCH 1/2] [BSP][at91sam9260] Cleanup Code.

---
 bsp/at91sam9260/applications/application.c | 24 ++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/bsp/at91sam9260/applications/application.c b/bsp/at91sam9260/applications/application.c
index 50373d89fd..cbb1899ad0 100644
--- a/bsp/at91sam9260/applications/application.c
+++ b/bsp/at91sam9260/applications/application.c
@@ -48,6 +48,8 @@ static int rt_led_app_init(void);
 
 int main(void)
 {
+	int timeout = 0;
+
 /* Filesystem Initialization */
 #ifdef RT_USING_DFS
 	{
@@ -74,21 +76,27 @@ int main(void)
 	rt_mmcsd_core_init();
 	rt_mmcsd_blk_init();
 	at91_mci_init();
-	rt_thread_delay(RT_TICK_PER_SECOND*2);
-	/* mount sd card fat partition 1 as root directory */
+	timeout = 0;
+	while ((rt_device_find("sd0") == RT_NULL) && (timeout++ < RT_TICK_PER_SECOND*2))
+	{
+		rt_thread_delay(1);
+	}
+
+	if (timeout < RT_TICK_PER_SECOND*2)
+	{
+		/* mount sd card fat partition 1 as root directory */
 		if (dfs_mount("sd0", "/", "elm", 0, 0) == 0)
 		{
 			rt_kprintf("File System initialized!\n");
 		}
 		else
-			rt_kprintf("File System initialzation failed!\n");
-#endif
+			rt_kprintf("File System initialzation failed!%d\n", rt_get_errno());
+	}
+	else
+	{
+		rt_kprintf("No SD card found.\n");
 	}
 #endif
-
-#ifdef RT_USING_I2C
-	{
-		rt_i2c_core_init();
 	}
 #endif
 

From ab7d4fd6653f5a4d31f4fd7aa47be3459a8f51e0 Mon Sep 17 00:00:00 2001
From: weety <luohui2320@gmail.com>
Date: Sat, 21 Oct 2017 17:38:22 +0800
Subject: [PATCH 2/2] [BSP][at91sam9260] Support rt_hw_console_output function.

---
 bsp/at91sam9260/drivers/board.c | 98 +++++++++++++++++++++++++++++++--
 1 file changed, 94 insertions(+), 4 deletions(-)

diff --git a/bsp/at91sam9260/drivers/board.c b/bsp/at91sam9260/drivers/board.c
index c45a2e6b2b..d058c30935 100644
--- a/bsp/at91sam9260/drivers/board.c
+++ b/bsp/at91sam9260/drivers/board.c
@@ -150,18 +150,108 @@ static void at91sam926x_pit_init(void)
  	writel(0xffff, AT91SAM9260_BASE_TC0 + AT91_TC_CV);
  }
 
+#define RXRDY			0x01
+#define TXRDY			(1 << 1)
+#define BPS			115200	/* serial baudrate */
+
+typedef struct uartport
+{
+	volatile rt_uint32_t CR;
+	volatile rt_uint32_t MR;
+	volatile rt_uint32_t IER;
+	volatile rt_uint32_t IDR;
+	volatile rt_uint32_t IMR;
+	volatile rt_uint32_t CSR;
+	volatile rt_uint32_t RHR;
+	volatile rt_uint32_t THR;
+	volatile rt_uint32_t BRGR;
+	volatile rt_uint32_t RTOR;
+	volatile rt_uint32_t TTGR;
+	volatile rt_uint32_t reserved0[5];
+	volatile rt_uint32_t FIDI;
+	volatile rt_uint32_t NER;
+	volatile rt_uint32_t reserved1;
+	volatile rt_uint32_t IFR;
+	volatile rt_uint32_t reserved2[44];
+	volatile rt_uint32_t RPR;
+	volatile rt_uint32_t RCR;
+	volatile rt_uint32_t TPR;
+	volatile rt_uint32_t TCR;
+	volatile rt_uint32_t RNPR;
+	volatile rt_uint32_t RNCR;
+	volatile rt_uint32_t TNPR;
+	volatile rt_uint32_t TNCR;
+	volatile rt_uint32_t PTCR;
+	volatile rt_uint32_t PTSR;
+}uartport;
+
+#define CIDR FIDI
+#define EXID NER
+#define FNR  reserved1
+
+#define DBGU	((struct uartport *)AT91SAM9260_BASE_DBGU)
+
+static void at91_usart_putc(char c)
+{
+    while (!(DBGU->CSR & TXRDY));
+	DBGU->THR = c;
+}
+
+/**
+ * This function is used to display a string on console, normally, it's
+ * invoked by rt_kprintf
+ *
+ * @param str the displayed string
+ */
+void rt_hw_console_output(const char* str)
+{
+	while (*str)
+	{
+		if (*str=='\n')
+		{
+			at91_usart_putc('\r');
+		}
+
+		at91_usart_putc(*str++);
+	}
+}
+
+static void rt_hw_console_init(void)
+{
+	int div;
+	int mode = 0;
+
+	DBGU->CR = AT91_US_RSTTX | AT91_US_RSTRX | 
+	       AT91_US_RXDIS | AT91_US_TXDIS;
+	mode |= AT91_US_USMODE_NORMAL | AT91_US_USCLKS_MCK | 
+		AT91_US_CHMODE_NORMAL;
+	mode |= AT91_US_CHRL_8;
+	mode |= AT91_US_NBSTOP_1;
+	mode |= AT91_US_PAR_NONE;
+	DBGU->MR = mode;
+	div = (clk_get_rate(clk_get("mck")) / 16 + BPS/2) / BPS;
+	DBGU->BRGR = div;
+	DBGU->CR = AT91_US_RXEN | AT91_US_TXEN;
+}
+
+
 /**
  * This function will init at91sam9260 board
  */
 void rt_hw_board_init()
 {
-	/* initialize mmu */
-	rt_hw_mmu_init(at91_mem_desc, sizeof(at91_mem_desc)/sizeof(at91_mem_desc[0]));
-		/* initialize hardware interrupt */
-	rt_hw_interrupt_init();
 	/* initialize the system clock */
 	rt_hw_clock_init();
 
+	/* initialize console */
+	rt_hw_console_init();
+
+	/* initialize mmu */
+	rt_hw_mmu_init(at91_mem_desc, sizeof(at91_mem_desc)/sizeof(at91_mem_desc[0]));
+
+	/* initialize hardware interrupt */
+	rt_hw_interrupt_init();
+
 	/* initialize early device */
 #ifdef RT_USING_COMPONENTS_INIT
 	rt_components_board_init();