--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/Interrupt/main.c	Mon Oct 03 21:19:15 2011 +1030
@@ -0,0 +1,435 @@
+/**
+  ******************************************************************************
+  * @file    I2S/Interrupt/main.c 
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    08-April-2011
+  * @brief   Main program body
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */ 
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup I2S_Interrupt
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
+
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+I2S_InitTypeDef I2S_InitStructure;
+const uint16_t I2S3_Buffer_Tx[32] = {0x0102, 0x0304, 0x0506, 0x0708, 0x090A, 0x0B0C,
+                                     0x0D0E, 0x0F10, 0x1112, 0x1314, 0x1516, 0x1718,
+                                     0x191A, 0x1B1C, 0x1D1E, 0x1F20, 0x2122, 0x2324,
+                                     0x2526, 0x2728, 0x292A, 0x2B2C, 0x2D2E, 0x2F30,
+                                     0x3132, 0x3334, 0x3536, 0x3738, 0x393A, 0x3B3C,
+                                     0x3D3E, 0x3F40};
+
+uint16_t I2S2_Buffer_Rx[32];
+__IO uint32_t TxIdx = 0, RxIdx = 0;
+TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
+ErrorStatus HSEStartUpStatus;
+
+/* Private function prototypes -----------------------------------------------*/
+void RCC_Configuration(void);
+void GPIO_Configuration(void);
+void NVIC_Configuration(void);
+TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength);
+TestStatus Buffercmp24bits(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief  Main program
+  * @param  None
+  * @retval None
+  */
+int main(void)
+{
+  /*!< At this stage the microcontroller clock setting is already configured, 
+       this is done through SystemInit() function which is called from startup
+       file (startup_stm32f10x_xx.s) before to branch to application main.
+       To reconfigure the default setting of SystemInit() function, refer to
+       system_stm32f10x.c file
+     */     
+       
+  /* System clocks configuration ---------------------------------------------*/
+  RCC_Configuration();
+
+  /* NVIC configuration ------------------------------------------------------*/
+  NVIC_Configuration();
+
+  /* GPIO configuration ------------------------------------------------------*/
+  GPIO_Configuration();
+
+  SPI_I2S_DeInit(SPI3);
+  SPI_I2S_DeInit(SPI2);
+  
+  /* I2S peripheral configuration */
+  I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips;
+  I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_16bextended;
+  I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable;
+  I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_48k;
+  I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
+
+  /* I2S3 Master Transmitter to I2S2 Slave Receiver communication -----------*/
+  /* I2S3 configuration */
+  I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
+  I2S_Init(SPI3, &I2S_InitStructure);
+
+  /* I2S2 configuration */
+  I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx;
+  I2S_Init(SPI2, &I2S_InitStructure);
+
+  /* Enable the I2S3 TxE interrupt */
+  SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_TXE, ENABLE);
+
+  /* Enable the I2S2 RxNE interrupt */
+  SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE);
+
+  /* Enable the I2S2 */
+  I2S_Cmd(SPI2, ENABLE);
+
+  /* Enable the I2S3 */
+  I2S_Cmd(SPI3, ENABLE);
+
+  /* Wait the end of communication */
+  while (RxIdx < 32)
+  {}
+
+  TransferStatus1 = Buffercmp(I2S2_Buffer_Rx, (uint16_t*)I2S3_Buffer_Tx, 32);
+  /* TransferStatus1 = PASSED, if the data transmitted from I2S3 and received by
+                               I2S2 are the same
+     TransferStatus1 = FAILED, if the data transmitted from I2S3 and received by
+                               I2S2 are different */
+  
+  /* Reinitialize the buffers */
+  for (RxIdx = 0; RxIdx < 32; RxIdx++)
+  {
+    I2S2_Buffer_Rx[RxIdx] = 0;
+  }
+  TxIdx = 0;
+  RxIdx = 0;
+
+  SPI_I2S_DeInit(SPI3);
+  SPI_I2S_DeInit(SPI2);  
+  
+  /* I2S peripheral configuration */
+  I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips;
+  I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_24b;
+  I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable;
+  I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_16k;
+  I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low;
+
+  /* I2S3 Master Transmitter to I2S2 Slave Receiver communication -----------*/
+  /* I2S3 configuration */
+  I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
+  I2S_Init(SPI3, &I2S_InitStructure);
+
+  /* I2S2 configuration */
+  I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx;
+  I2S_Init(SPI2, &I2S_InitStructure);
+
+  /* Enable the I2S3 TxE interrupt */
+  SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_TXE, ENABLE);
+
+  /* Enable the I2S2 RxNE interrupt */
+  SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE);
+
+  /* Enable the I2S2 */
+  I2S_Cmd(SPI2, ENABLE);
+
+  /* Enable the I2S3 */
+  I2S_Cmd(SPI3, ENABLE);
+
+  /* Wait the end of communication */
+  while (RxIdx < 32)
+  {
+  }
+
+  TransferStatus2 = Buffercmp24bits(I2S2_Buffer_Rx, (uint16_t*)I2S3_Buffer_Tx, 32);
+  /* TransferStatus2 = PASSED, if the data transmitted from I2S3 and received by
+                               I2S2 are the same
+     TransferStatus2 = FAILED, if the data transmitted from I2S3 and received by
+                               I2S2 are different */     
+
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  Configures the different system clocks.
+  * @param  None
+  * @retval None
+  */
+void RCC_Configuration(void)
+{
+  /* RCC system reset(for debug purpose) */
+  RCC_DeInit();
+
+  /* Enable HSE */
+  RCC_HSEConfig(RCC_HSE_ON);
+
+  /* Wait till HSE is ready */
+  HSEStartUpStatus = RCC_WaitForHSEStartUp();
+
+  if(HSEStartUpStatus == SUCCESS)
+  {
+    /* Enable Prefetch Buffer */
+    FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
+
+    /* Flash 2 wait state */
+    FLASH_SetLatency(FLASH_Latency_2);
+	
+    /* HCLK = SYSCLK */
+    RCC_HCLKConfig(RCC_SYSCLK_Div1); 
+  
+    /* PCLK2 = HCLK */
+    RCC_PCLK2Config(RCC_HCLK_Div1); 
+
+    /* PCLK1 = HCLK/2 */
+    RCC_PCLK1Config(RCC_HCLK_Div2);
+
+    /* ADCCLK = PCLK2/4 */
+    RCC_ADCCLKConfig(RCC_PCLK2_Div4); 
+  
+#ifndef STM32F10X_CL  
+    /* PLLCLK = 8MHz * 9 = 72 MHz */
+    RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
+
+#else
+    /* Configure PLLs *********************************************************/
+    /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */
+    RCC_PREDIV2Config(RCC_PREDIV2_Div5);
+    RCC_PLL2Config(RCC_PLL2Mul_8);
+
+    /* Enable PLL2 */
+    RCC_PLL2Cmd(ENABLE);
+
+    /* Wait till PLL2 is ready */
+    while (RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET)
+    {}
+
+    /* PLL configuration: PLLCLK = (PLL2 / 5) * 9 = 72 MHz */ 
+    RCC_PREDIV1Config(RCC_PREDIV1_Source_PLL2, RCC_PREDIV1_Div5);
+    RCC_PLLConfig(RCC_PLLSource_PREDIV1, RCC_PLLMul_9);
+
+    /* PLL3 configuration: PLL3CLK = (HSE / 5) * 11 => PLL3_VCO = 110 MHz */
+    RCC_PLL3Config(RCC_PLL3Mul_11);
+    /* Enable PLL3 */
+    RCC_PLL3Cmd(ENABLE);    
+    /* Wait till PLL3 is ready */
+    while (RCC_GetFlagStatus(RCC_FLAG_PLL3RDY) == RESET)
+    {}
+
+    /* Configure I2S clock source: On Connectivity Line Devices, the I2S can be 
+        clocked by PLL3 VCO instead of SYS_CLK in order to guarantee higher 
+        precision */
+    RCC_I2S3CLKConfig(RCC_I2S3CLKSource_PLL3_VCO);
+    RCC_I2S2CLKConfig(RCC_I2S2CLKSource_PLL3_VCO);  
+#endif
+
+    /* Enable PLL */ 
+    RCC_PLLCmd(ENABLE);
+
+    /* Wait till PLL is ready */
+    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
+    {
+    }
+
+    /* Select PLL as system clock source */
+    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
+
+    /* Wait till PLL is used as system clock source */
+    while(RCC_GetSYSCLKSource() != 0x08)
+    {
+    }
+  }  
+  
+  /* Enable peripheral clocks ------------------------------------------------*/
+  /* GPIOA, GPIOB and AFIO clocks enable */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
+                         RCC_APB2Periph_AFIO, ENABLE);
+
+#ifdef USE_STM3210C_EVAL 
+  /* GPIOC Clock enable (for the SPI3 remapped pins)  */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE);  
+#endif /* USE_STM3210C_EVAL */
+  
+  /* SPI3 and SPI2 clocks enable */
+  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3 | RCC_APB1Periph_SPI2, ENABLE);
+}
+
+/**
+  * @brief  Configures the different GPIO ports.
+  * @param  None
+  * @retval None
+  */
+void GPIO_Configuration(void)
+{
+  GPIO_InitTypeDef GPIO_InitStructure;
+
+#ifdef USE_STM3210E_EVAL
+  /* Disable the JTAG interface and enable the SWJ interface
+      This operation is not necessary for Connectivity Line devices since
+      SPI3 I/Os can be remapped on other GPIO pins */
+  GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
+#endif /* USE_STM3210E_EVAL */ 
+
+  /* Configure SPI2 pins: CK, WS and SD ---------------------------------*/
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_15;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+
+#ifdef USE_STM3210C_EVAL
+  
+  /* Remap SPI3 on PC10-PC11-PC12-PA4 GPIO pins ------------------------*/
+  GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE);
+  
+  /* Configure SPI3 pins: CK and SD ------------------------------------*/
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_12;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);  
+
+  /* Configure SPI3 pins: WS -------------------------------------------*/
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+  
+#elif defined (USE_STM3210E_EVAL)
+  
+  /* Configure SPI3 pins: CK and SD ------------------------------------*/
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_5;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+  GPIO_Init(GPIOB, &GPIO_InitStructure);
+
+  /* Configure SPI3 pins: WS -------------------------------------------*/
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
+  GPIO_Init(GPIOA, &GPIO_InitStructure);
+  
+#endif /* USE_STM3210C_EVAL */  
+}
+
+/**
+  * @brief  Configure the nested vectored interrupt controller.
+  * @param  None
+  * @retval None
+  */
+void NVIC_Configuration(void)
+{
+  NVIC_InitTypeDef NVIC_InitStructure;
+
+  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
+
+  /* SPI3 IRQ Channel configuration */
+  NVIC_InitStructure.NVIC_IRQChannel = SPI3_IRQn;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
+  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+  NVIC_Init(&NVIC_InitStructure);
+
+  /* SPI2 IRQ channel configuration */
+  NVIC_InitStructure.NVIC_IRQChannel = SPI2_IRQn;
+  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+  NVIC_Init(&NVIC_InitStructure);
+}
+
+/**
+  * @brief  Compares two buffers.
+  * @param  pBuffer1, pBuffer2: buffers to be compared.
+  * @param  BufferLength: buffer's length
+  * @retval PASSED: pBuffer1 identical to pBuffer2
+  *         FAILED: pBuffer1 differs from pBuffer2
+  */
+TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength)
+{
+  while (BufferLength--)
+  {
+    if (*pBuffer1 != *pBuffer2)
+    {
+      return FAILED;
+    }
+
+    pBuffer1++;
+    pBuffer2++;
+  }
+
+  return PASSED;
+}
+
+/**
+  * @brief  Compares two buffers in 24 bits data format.
+  * @param  pBuffer1, pBuffer2: buffers to be compared.
+  * @param  BufferLength: buffer's length
+  * @retval PASSED: pBuffer1 identical to pBuffer2
+  *         FAILED: pBuffer1 differs from pBuffer2
+  */
+TestStatus Buffercmp24bits(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength)
+{
+  while (BufferLength--)
+  {
+    if (*pBuffer1 != *pBuffer2)
+    {
+      if (*pBuffer1 != (*pBuffer2 & 0xFF00))
+      {
+        return FAILED;
+      }
+    }
+
+    pBuffer1++;
+    pBuffer2++;
+  }
+
+  return PASSED;
+}
+
+#ifdef  USE_FULL_ASSERT
+
+/**
+  * @brief  Reports the name of the source file and the source line number
+  *         where the assert_param error has occurred.
+  * @param  file: pointer to the source file name
+  * @param  line: assert_param error line source number
+  * @retval None
+  */
+void assert_failed(uint8_t* file, uint32_t line)
+{
+  /* User can add his own implementation to report the file name and line number,
+     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+
+  /* Infinite loop */
+  while (1)
+  {}
+}
+
+#endif
+
+/**
+  * @}
+  */ 
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/