Fixed sample rate not set correctly under slave I2S mode. (Tested this time. ^_^)

Added locking mechanism to periperials on SPI1.
Added DMA mode read/write routine to SPI Flash. (Debug reuiqred. WARNING: !!! ENABLING DMA MODE MAY DESTROY YOUR DATA IN THE SPI FLASH !!!)

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@538 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/stm32_radio/board.c

@@ -18,6 +18,8 @@
 #include "stm32f10x.h"
 #include "board.h"
 
+struct rt_semaphore spi1_lock;
+
 /**
  * @addtogroup STM32
  */
@@ -87,7 +89,7 @@ static void all_device_reset(void)
                            | RCC_APB2Periph_GPIOF | RCC_APB2Periph_GPIOG,ENABLE);
 
     GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_Out_PP;
-    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
 
     /* SDIO POWER */
     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
@@ -279,6 +281,11 @@ void rt_hw_board_init()
         /* Enable SPI_MASTER */
         SPI_Cmd(SPI1, ENABLE);
         SPI_CalculateCRC(SPI1, DISABLE);
+
+    	if (rt_sem_init(&spi1_lock, "spi1lock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
+    	{
+    		rt_kprintf("init spi1 lock semaphore failed\n");
+    	}
     }
 
 }/* rt_hw_board_init */

bsp/stm32_radio/board.h

@@ -69,6 +69,8 @@ void rt_hw_board_init(void);
 void rt_hw_usart_init(void);
 void rt_hw_sdcard_init(void);
 
+extern struct rt_semaphore spi1_lock;
+
 #endif
 
 // <<< Use Configuration Wizard in Context Menu >>>

bsp/stm32_radio/spi_flash.h

@@ -18,7 +18,8 @@ thanks to gxlujd.
 #define AT45DB_PAGE_ERASE                     0x81	/* 页删除（每页512/528字节） */
 #define AT45DB_SECTOR_ERASE                   0x7C	/* 扇区擦除（每扇区128K字节）*/
 #define AT45DB_READ_STATE_REGISTER            0xD7	/* 读取状态寄存器 */
-
+#define AT45DB_MM_PAGE_READ                   0xD2	/* 读取主储存器的指定页 */
+#define AT45DB_MM_PAGE_PROG_THRU_BUFFER1      0x82  /* 通过缓冲区写入主储存器 */
 
 extern void rt_hw_spi_flash_init(void);