Revision 0:dc88722ab141, committed 2014-07-03

Comitter:

p_igmon

Date:

Thu Jul 03 11:59:07 2014 +0000

Child:

1:48f506a7b488

Commit message:

Part of MicroGen4 Music Syntesizer program.
; I2S DMA Stereo DAC (PCM1781)
; http://www.geocities.jp/micro_diys/index2

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Synthesizer.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,32 @@
+/*
+    COPYRIGHT(c) 2014 p.igmon
+*/
+
+#include "synthesizer.h"
+
+/* DMA WAVE BUFFER */
+extern S16 DMA_Buffer[];
+extern __IO BUFFER_StateTypeDef BufferOffset;
+
+void wave_generate(void){
+    U16 count;
+    S16 rch,lch;// 16bit stereo
+    volatile S16 *ptr0;
+
+    if (BufferOffset == DMA_FullComplete){
+        ptr0 = (S16 *)&DMA_Buffer[DMA_BUFFERSIZE>>1];// From Half
+    }else{
+        ptr0 = (S16 *)&DMA_Buffer[0];// From Top
+    }    
+    BufferOffset = DMA_Idle;
+
+    count = DMA_BUFFERSIZE/4;
+    while(count-- > 0){
+
+        /* generate wave here */
+//      lch = .....
+//      rch = .....
+        *ptr0++ = lch;
+        *ptr0++ = rch;
+     }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/device.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,165 @@
+/**
+  * COPYRIGHT(c) 2014 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+#include "synthesizer.h"
+
+/* Private variables ---------------------------------------------------------*/
+I2S_HandleTypeDef hi2s2;
+DMA_HandleTypeDef hdma_i2s2_ext_tx;
+
+
+/* Private function prototypes -----------------------------------------------*/
+static void SystemClock_Config(void);
+static void MX_DMA_Init(void);
+static void MX_I2S2_Init(void);
+
+
+void uGen4_device_init(void)
+{
+  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+  HAL_Init();
+
+  /* Configure the system clock */
+  SystemClock_Config();// Set RCC I2S Clock
+
+  /* Initialize all configured peripherals */
+  MX_GPIO_Init();// GPIO CLOCK Enable
+  MX_DMA_Init();
+  MX_I2S2_Init();
+}
+
+
+/** System Clock Configuration
+*/
+static void SystemClock_Config(void)
+{
+
+  RCC_ClkInitTypeDef RCC_ClkInitStruct;
+  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
+  RCC_OscInitTypeDef RCC_OscInitStruct;
+
+  __PWR_CLK_ENABLE();
+
+  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
+  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
+  RCC_OscInitStruct.HSICalibrationValue = 6;
+  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
+  RCC_OscInitStruct.PLL.PLLM = 16;
+  RCC_OscInitStruct.PLL.PLLN = 336;
+  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+  RCC_OscInitStruct.PLL.PLLQ = 4;
+  HAL_RCC_OscConfig(&RCC_OscInitStruct);
+
+  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1;
+  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
+  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
+  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
+
+  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
+  PeriphClkInitStruct.PLLI2S.PLLI2SN = 290;
+  PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
+  HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
+
+}
+
+/* I2S2 init function */
+void MX_I2S2_Init(void)
+{
+
+  hi2s2.Instance = SPI2;
+  hi2s2.Init.Mode = I2S_MODE_MASTER_TX;
+  hi2s2.Init.Standard = I2S_STANDARD_PHILLIPS;
+  hi2s2.Init.DataFormat = I2S_DATAFORMAT_16B;
+  hi2s2.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
+  hi2s2.Init.AudioFreq = I2S_AUDIOFREQ_44K;
+  hi2s2.Init.CPOL = I2S_CPOL_LOW;
+  hi2s2.Init.ClockSource = I2S_CLOCK_PLL;
+  hi2s2.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_DISABLE;
+  HAL_I2S_Init(&hi2s2);
+
+}
+
+
+/** 
+  * Enable DMA controller clock
+  */
+void MX_DMA_Init(void) 
+{
+  /* DMA controller clock enable */
+  __DMA1_CLK_ENABLE();
+
+  /* DMA interrupt init */
+  NVIC_SetVector(DMA1_Stream4_IRQn, (uint32_t )&DMA1_Stream4_IRQHandler);
+    /* Sets the priority grouping field */
+  HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);
+  HAL_NVIC_SetPriority(DMA1_Stream4_IRQn, 0, 0);
+  HAL_NVIC_EnableIRQ(DMA1_Stream4_IRQn);
+}
+
+/** Pinout Configuration
+*/
+void MX_GPIO_Init(void)
+{
+
+  /* GPIO Ports Clock Enable */
+  __GPIOC_CLK_ENABLE();
+  __GPIOB_CLK_ENABLE();
+  __GPIOA_CLK_ENABLE();
+
+}
+
+
+#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) */
+
+}
+
+#endif
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/i2s_dma.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,101 @@
+#include "synthesizer.h"
+
+extern Serial pc;
+extern DigitalOut myled;
+
+extern I2S_HandleTypeDef hi2s2;
+extern DMA_HandleTypeDef hdma_i2s2_ext_tx;
+
+
+S16 DMA_Buffer[DMA_BUFFERSIZE];
+//S16 * DMA_Buffer = (S16 *)0x20008000;
+__IO BUFFER_StateTypeDef BufferOffset = DMA_Idle;
+
+
+static const PinMap PinMap_I2S_MCK[] = {
+    {PC_6,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+//    {PC_7,  SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+    {NC,    NC,    0}
+};
+
+static const PinMap PinMap_I2S_CK[] = {
+    {PB_10,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+    {PB_13,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+//    {PD_3,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+//    {PC_10,  SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+    {NC,    NC,    0}
+};
+
+static const PinMap PinMap_I2S_WS[] = {
+    {PB_12,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+    {PB_9,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+//    {PA_15,  SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+    {NC,    NC,    0}
+};
+
+static const PinMap PinMap_I2S_SD[] = {
+    {PC_3,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+    {PB_15,  SPI_2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
+//    {PC_12,  SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
+//    {PD_6,  SPI_3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI3)},
+    {NC,    NC,    0}
+};
+
+
+
+void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+  if(hi2s->Instance == I2S2)
+  {
+    BufferOffset = DMA_FullComplete;
+    HAL_I2S_Transmit_DMA(&hi2s2, (uint16_t*)&DMA_Buffer[0], DMA_BUFFERSIZE); 
+  }
+}
+
+void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
+{
+    if(hi2s->Instance == I2S2) BufferOffset = DMA_HalfComplete;
+}
+
+
+
+void init_dmabuffer(void){
+    int16_t *ptr0 = (int16_t*)&DMA_Buffer[0];
+    for (int i =0;i < DMA_BUFFERSIZE/2 ;i++){
+        *ptr0++ = 0;// Lch 
+        *ptr0++ = 0;// Rch 
+    }
+}
+
+   
+void i2s_dma_init(void) {
+    pinmap_pinout(PC_6, PinMap_I2S_MCK);
+    pinmap_pinout(PB_13, PinMap_I2S_CK);
+    pinmap_pinout(PB_12, PinMap_I2S_WS);
+    pinmap_pinout(PB_15, PinMap_I2S_SD);
+
+    pin_mode(PC_6, PullUp);
+    pin_mode(PB_13, PullUp);
+    pin_mode(PB_12, PullUp);
+    pin_mode(PB_15, PullUp);
+
+    init_dmabuffer();
+
+    HAL_I2S_Transmit_DMA(&hi2s2, (uint16_t *)&DMA_Buffer[0],DMA_BUFFERSIZE / 2); 
+
+/*   for debug */
+/*
+    pc.printf("DMA CR =%4x \n\r"  ,DMA1_Stream4->CR);
+    pc.printf("DMA FCR =%4x \n\r"  ,DMA1_Stream4->FCR);
+
+    pc.printf("DMA M0AR =%4x M1AR =%4x PAR = %4x \n\r"  ,DMA1_Stream4->M0AR  ,DMA1_Stream4->M1AR ,DMA1_Stream4->PAR);
+    pc.printf("I2S CR2 = %4x \n\r" ,SPI2->CR2);
+    pc.printf("I2S SR = %4x \n\r" ,SPI2->SR);
+    pc.printf("I2S I2SCFGR = %4x \n\r" ,SPI2->I2SCFGR);
+    pc.printf("I2S I2SPR = %4x \n\r" ,SPI2->I2SPR);
+    pc.printf("RCC->PLLI2SCFGR = %4x \n\r" ,RCC->PLLI2SCFGR);
+*/
+ 
+//    HAL_RCC_MCOConfig(uint32_t RCC_MCO2, RCC_MCO2SOURCE_PLLI2SCLK, RCC_MCODIV_5);
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,29 @@
+/*
+    COPYRIGHT(c) 2014 p.igmon
+*/
+
+#include "synthesizer.h"
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+DigitalOut myled(LED1);
+
+extern S16 * DMA_Buffer;
+extern __IO BUFFER_StateTypeDef BufferOffset;
+
+int main(){
+    uGen4_device_init();
+    pc.baud(9600);
+//    pc.printf("CPU SystemCoreClock is %d Hz\r\n", SystemCoreClock);
+
+    i2s_dma_init();
+ 
+    while(1) {
+        if(BufferOffset != DMA_Idle) wave_generate();
+
+        /* other work */
+
+    }
+}
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/04dd9b1680ae
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32f4xx_hal_conf.h	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,387 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_conf.h
+  * @brief   HAL configuration file.             
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_HAL_CONF_H
+#define __STM32F4xx_HAL_CONF_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/* ########################## Module Selection ############################## */
+/**
+  * @brief This is the list of modules to be used in the HAL driver 
+  */
+#define HAL_MODULE_ENABLED  
+//#define HAL_ADC_MODULE_ENABLED   
+//#define HAL_CAN_MODULE_ENABLED   
+//#define HAL_CRC_MODULE_ENABLED   
+//#define HAL_CRYP_MODULE_ENABLED   
+//#define HAL_DAC_MODULE_ENABLED   
+//#define HAL_DCMI_MODULE_ENABLED   
+//#define HAL_DMA2D_MODULE_ENABLED   
+//#define HAL_ETH_MODULE_ENABLED   
+//#define HAL_NAND_MODULE_ENABLED   
+//#define HAL_NOR_MODULE_ENABLED   
+//#define HAL_PCCARD_MODULE_ENABLED   
+//#define HAL_SRAM_MODULE_ENABLED   
+//#define HAL_SDRAM_MODULE_ENABLED   
+//#define HAL_HASH_MODULE_ENABLED   
+#define HAL_I2C_MODULE_ENABLED
+#define HAL_I2S_MODULE_ENABLED
+//#define HAL_IWDG_MODULE_ENABLED   
+//#define HAL_LTDC_MODULE_ENABLED   
+//#define HAL_RNG_MODULE_ENABLED   
+//#define HAL_RTC_MODULE_ENABLED   
+//#define HAL_SAI_MODULE_ENABLED   
+//#define HAL_SD_MODULE_ENABLED   
+//#define HAL_SPI_MODULE_ENABLED   
+//#define HAL_TIM_MODULE_ENABLED   
+#define HAL_UART_MODULE_ENABLED
+//#define HAL_USART_MODULE_ENABLED   
+//#define HAL_IRDA_MODULE_ENABLED   
+//#define HAL_SMARTCARD_MODULE_ENABLED   
+//#define HAL_WWDG_MODULE_ENABLED   
+//#define HAL_PCD_MODULE_ENABLED   
+//#define HAL_HCD_MODULE_ENABLED   
+#define HAL_GPIO_MODULE_ENABLED
+#define HAL_DMA_MODULE_ENABLED
+#define HAL_RCC_MODULE_ENABLED
+#define HAL_FLASH_MODULE_ENABLED
+#define HAL_PWR_MODULE_ENABLED
+#define HAL_CORTEX_MODULE_ENABLED
+
+/* ########################## HSE/HSI Values adaptation ##################### */
+/**
+  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
+  *        This value is used by the RCC HAL module to compute the system frequency
+  *        (when HSE is used as system clock source, directly or through the PLL).  
+  */
+#if !defined  (HSE_VALUE) 
+  #define HSE_VALUE    ((uint32_t)25000000) /*!< Value of the External oscillator in Hz */
+#endif /* HSE_VALUE */
+
+#if !defined  (HSE_STARTUP_TIMEOUT)
+  #define HSE_STARTUP_TIMEOUT    ((uint32_t)5000)   /*!< Time out for HSE start up, in ms */
+#endif /* HSE_STARTUP_TIMEOUT */
+
+/**
+  * @brief Internal High Speed oscillator (HSI) value.
+  *        This value is used by the RCC HAL module to compute the system frequency
+  *        (when HSI is used as system clock source, directly or through the PLL). 
+  */
+#if !defined  (HSI_VALUE)
+  #define HSI_VALUE    ((uint32_t)16000000) /*!< Value of the Internal oscillator in Hz*/
+#endif /* HSI_VALUE */
+
+/**
+  * @brief External clock source for I2S peripheral
+  *        This value is used by the I2S HAL module to compute the I2S clock source 
+  *        frequency, this source is inserted directly through I2S_CKIN pad. 
+  */
+#if !defined  (EXTERNAL_CLOCK_VALUE)
+  #define EXTERNAL_CLOCK_VALUE    ((uint32_t)12288000) /*!< Value of the External audio frequency in Hz*/
+#endif /* EXTERNAL_CLOCK_VALUE */
+
+/* Tip: To avoid modifying this file each time you need to use different HSE,
+   ===  you can define the HSE value in your toolchain compiler preprocessor. */
+
+/* ########################### System Configuration ######################### */
+/**
+  * @brief This is the HAL system configuration section
+  */     
+  
+#define  VDD_VALUE                    ((uint32_t)3300) /*!< Value of VDD in mv */           
+#define  USE_RTOS                     0     
+#define  PREFETCH_ENABLE              1
+#define  INSTRUCTION_CACHE_ENABLE     1
+#define  DATA_CACHE_ENABLE            1
+
+/* ########################## Assert Selection ############################## */
+/**
+  * @brief Uncomment the line below to expanse the "assert_param" macro in the 
+  *        HAL drivers code
+  */
+/* #define USE_FULL_ASSERT    1 */
+
+/* ################## Ethernet peripheral configuration ##################### */
+
+/* Section 1 : Ethernet peripheral configuration */
+
+/* MAC ADDRESS: MAC_ADDR0:MAC_ADDR1:MAC_ADDR2:MAC_ADDR3:MAC_ADDR4:MAC_ADDR5 */
+#define MAC_ADDR0   2
+#define MAC_ADDR1   0
+#define MAC_ADDR2   0
+#define MAC_ADDR3   0
+#define MAC_ADDR4   0
+#define MAC_ADDR5   0
+
+/* Definition of the Ethernet driver buffers size and count */   
+#define ETH_RX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for receive               */
+#define ETH_TX_BUF_SIZE                ETH_MAX_PACKET_SIZE /* buffer size for transmit              */
+#define ETH_RXBUFNB                    ((uint32_t)4)       /* 4 Rx buffers of size ETH_RX_BUF_SIZE  */
+#define ETH_TXBUFNB                    ((uint32_t)4)       /* 4 Tx buffers of size ETH_TX_BUF_SIZE  */
+
+/* Section 2: PHY configuration section */
+
+/* DP83848 PHY Address*/ 
+#define DP83848_PHY_ADDRESS             0x01
+/* PHY Reset delay these values are based on a 1 ms Systick interrupt*/ 
+#define PHY_RESET_DELAY                 ((uint32_t)0x000000FF)
+/* PHY Configuration delay */
+#define PHY_CONFIG_DELAY                ((uint32_t)0x00000FFF)
+
+#define PHY_READ_TO                     ((uint32_t)0x0000FFFF)
+#define PHY_WRITE_TO                    ((uint32_t)0x0000FFFF)
+
+/* Section 3: Common PHY Registers */
+
+#define PHY_BCR                         ((uint16_t)0x00)    /*!< Transceiver Basic Control Register   */
+#define PHY_BSR                         ((uint16_t)0x01)    /*!< Transceiver Basic Status Register    */
+ 
+#define PHY_RESET                       ((uint16_t)0x8000)  /*!< PHY Reset */
+#define PHY_LOOPBACK                    ((uint16_t)0x4000)  /*!< Select loop-back mode */
+#define PHY_FULLDUPLEX_100M             ((uint16_t)0x2100)  /*!< Set the full-duplex mode at 100 Mb/s */
+#define PHY_HALFDUPLEX_100M             ((uint16_t)0x2000)  /*!< Set the half-duplex mode at 100 Mb/s */
+#define PHY_FULLDUPLEX_10M              ((uint16_t)0x0100)  /*!< Set the full-duplex mode at 10 Mb/s  */
+#define PHY_HALFDUPLEX_10M              ((uint16_t)0x0000)  /*!< Set the half-duplex mode at 10 Mb/s  */
+#define PHY_AUTONEGOTIATION             ((uint16_t)0x1000)  /*!< Enable auto-negotiation function     */
+#define PHY_RESTART_AUTONEGOTIATION     ((uint16_t)0x0200)  /*!< Restart auto-negotiation function    */
+#define PHY_POWERDOWN                   ((uint16_t)0x0800)  /*!< Select the power down mode           */
+#define PHY_ISOLATE                     ((uint16_t)0x0400)  /*!< Isolate PHY from MII                 */
+
+#define PHY_AUTONEGO_COMPLETE           ((uint16_t)0x0020)  /*!< Auto-Negotiation process completed   */
+#define PHY_LINKED_STATUS               ((uint16_t)0x0004)  /*!< Valid link established               */
+#define PHY_JABBER_DETECTION            ((uint16_t)0x0002)  /*!< Jabber condition detected            */
+  
+/* Section 4: Extended PHY Registers */
+
+#define PHY_SR                          ((uint16_t)0x10)    /*!< PHY status register Offset                      */
+#define PHY_MICR                        ((uint16_t)0x11)    /*!< MII Interrupt Control Register                  */
+#define PHY_MISR                        ((uint16_t)0x12)    /*!< MII Interrupt Status and Misc. Control Register */
+ 
+#define PHY_LINK_STATUS                 ((uint16_t)0x0001)  /*!< PHY Link mask                                   */
+#define PHY_SPEED_STATUS                ((uint16_t)0x0002)  /*!< PHY Speed mask                                  */
+#define PHY_DUPLEX_STATUS               ((uint16_t)0x0004)  /*!< PHY Duplex mask                                 */
+
+#define PHY_MICR_INT_EN                 ((uint16_t)0x0002)  /*!< PHY Enable interrupts                           */
+#define PHY_MICR_INT_OE                 ((uint16_t)0x0001)  /*!< PHY Enable output interrupt events              */
+
+#define PHY_MISR_LINK_INT_EN            ((uint16_t)0x0020)  /*!< Enable Interrupt on change of link status       */
+#define PHY_LINK_INTERRUPT              ((uint16_t)0x2000)  /*!< PHY link status interrupt mask                  */
+
+/* Includes ------------------------------------------------------------------*/
+/**
+  * @brief Include module's header file 
+  */
+
+#ifdef HAL_RCC_MODULE_ENABLED
+  #include "stm32f4xx_hal_rcc.h"
+#endif /* HAL_RCC_MODULE_ENABLED */
+
+#ifdef HAL_GPIO_MODULE_ENABLED
+  #include "stm32f4xx_hal_gpio.h"
+#endif /* HAL_GPIO_MODULE_ENABLED */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+  #include "stm32f4xx_hal_dma.h"
+#endif /* HAL_DMA_MODULE_ENABLED */
+   
+#ifdef HAL_CORTEX_MODULE_ENABLED
+  #include "stm32f4xx_hal_cortex.h"
+#endif /* HAL_CORTEX_MODULE_ENABLED */
+
+#ifdef HAL_ADC_MODULE_ENABLED
+  #include "stm32f4xx_hal_adc.h"
+#endif /* HAL_ADC_MODULE_ENABLED */
+
+#ifdef HAL_CAN_MODULE_ENABLED
+  #include "stm32f4xx_hal_can.h"
+#endif /* HAL_CAN_MODULE_ENABLED */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+  #include "stm32f4xx_hal_crc.h"
+#endif /* HAL_CRC_MODULE_ENABLED */
+
+#ifdef HAL_CRYP_MODULE_ENABLED
+  #include "stm32f4xx_hal_cryp.h" 
+#endif /* HAL_CRYP_MODULE_ENABLED */
+
+#ifdef HAL_DMA2D_MODULE_ENABLED
+  #include "stm32f4xx_hal_dma2d.h"
+#endif /* HAL_DMA2D_MODULE_ENABLED */
+
+#ifdef HAL_DAC_MODULE_ENABLED
+  #include "stm32f4xx_hal_dac.h"
+#endif /* HAL_DAC_MODULE_ENABLED */
+
+#ifdef HAL_DCMI_MODULE_ENABLED
+  #include "stm32f4xx_hal_dcmi.h"
+#endif /* HAL_DCMI_MODULE_ENABLED */
+
+#ifdef HAL_ETH_MODULE_ENABLED
+  #include "stm32f4xx_hal_eth.h"
+#endif /* HAL_ETH_MODULE_ENABLED */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+  #include "stm32f4xx_hal_flash.h"
+#endif /* HAL_FLASH_MODULE_ENABLED */
+ 
+#ifdef HAL_SRAM_MODULE_ENABLED
+  #include "stm32f4xx_hal_sram.h"
+#endif /* HAL_SRAM_MODULE_ENABLED */
+
+#ifdef HAL_NOR_MODULE_ENABLED
+  #include "stm32f4xx_hal_nor.h"
+#endif /* HAL_NOR_MODULE_ENABLED */
+
+#ifdef HAL_NAND_MODULE_ENABLED
+  #include "stm32f4xx_hal_nand.h"
+#endif /* HAL_NAND_MODULE_ENABLED */
+
+#ifdef HAL_PCCARD_MODULE_ENABLED
+  #include "stm32f4xx_hal_pccard.h"
+#endif /* HAL_PCCARD_MODULE_ENABLED */ 
+  
+#ifdef HAL_SDRAM_MODULE_ENABLED
+  #include "stm32f4xx_hal_sdram.h"
+#endif /* HAL_SDRAM_MODULE_ENABLED */      
+
+#ifdef HAL_HASH_MODULE_ENABLED
+ #include "stm32f4xx_hal_hash.h"
+#endif /* HAL_HASH_MODULE_ENABLED */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+ #include "stm32f4xx_hal_i2c.h"
+#endif /* HAL_I2C_MODULE_ENABLED */
+
+#ifdef HAL_I2S_MODULE_ENABLED
+ #include "stm32f4xx_hal_i2s.h"
+#endif /* HAL_I2S_MODULE_ENABLED */
+
+#ifdef HAL_IWDG_MODULE_ENABLED
+ #include "stm32f4xx_hal_iwdg.h"
+#endif /* HAL_IWDG_MODULE_ENABLED */
+
+#ifdef HAL_LTDC_MODULE_ENABLED
+ #include "stm32f4xx_hal_ltdc.h"
+#endif /* HAL_LTDC_MODULE_ENABLED */
+
+#ifdef HAL_PWR_MODULE_ENABLED
+ #include "stm32f4xx_hal_pwr.h"
+#endif /* HAL_PWR_MODULE_ENABLED */
+
+#ifdef HAL_RNG_MODULE_ENABLED
+ #include "stm32f4xx_hal_rng.h"
+#endif /* HAL_RNG_MODULE_ENABLED */
+
+#ifdef HAL_RTC_MODULE_ENABLED
+ #include "stm32f4xx_hal_rtc.h"
+#endif /* HAL_RTC_MODULE_ENABLED */
+
+#ifdef HAL_SAI_MODULE_ENABLED
+ #include "stm32f4xx_hal_sai.h"
+#endif /* HAL_SAI_MODULE_ENABLED */
+
+#ifdef HAL_SD_MODULE_ENABLED
+ #include "stm32f4xx_hal_sd.h"
+#endif /* HAL_SD_MODULE_ENABLED */
+
+#ifdef HAL_SPI_MODULE_ENABLED
+ #include "stm32f4xx_hal_spi.h"
+#endif /* HAL_SPI_MODULE_ENABLED */
+
+#ifdef HAL_TIM_MODULE_ENABLED
+ #include "stm32f4xx_hal_tim.h"
+#endif /* HAL_TIM_MODULE_ENABLED */
+
+#ifdef HAL_UART_MODULE_ENABLED
+ #include "stm32f4xx_hal_uart.h"
+#endif /* HAL_UART_MODULE_ENABLED */
+
+#ifdef HAL_USART_MODULE_ENABLED
+ #include "stm32f4xx_hal_usart.h"
+#endif /* HAL_USART_MODULE_ENABLED */
+
+#ifdef HAL_IRDA_MODULE_ENABLED
+ #include "stm32f4xx_hal_irda.h"
+#endif /* HAL_IRDA_MODULE_ENABLED */
+
+#ifdef HAL_SMARTCARD_MODULE_ENABLED
+ #include "stm32f4xx_hal_smartcard.h"
+#endif /* HAL_SMARTCARD_MODULE_ENABLED */
+
+#ifdef HAL_WWDG_MODULE_ENABLED
+ #include "stm32f4xx_hal_wwdg.h"
+#endif /* HAL_WWDG_MODULE_ENABLED */
+
+#ifdef HAL_PCD_MODULE_ENABLED
+ #include "stm32f4xx_hal_pcd.h"
+#endif /* HAL_PCD_MODULE_ENABLED */
+
+#ifdef HAL_HCD_MODULE_ENABLED
+ #include "stm32f4xx_hal_hcd.h"
+#endif /* HAL_HCD_MODULE_ENABLED */
+   
+/* Exported macro ------------------------------------------------------------*/
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  The assert_param macro is used for function's parameters check.
+  * @param  expr: If expr is false, it calls assert_failed function
+  *         which reports the name of the source file and the source
+  *         line number of the call that failed. 
+  *         If expr is true, it returns no value.
+  * @retval None
+  */
+  #define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+  void assert_failed(uint8_t* file, uint32_t line);
+#else
+  #define assert_param(expr) ((void)0)
+#endif /* USE_FULL_ASSERT */    
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_HAL_CONF_H */
+ 
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32f4xx_hal_msp.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,123 @@
+/**
+  ******************************************************************************
+  * File Name          : stm32f4xx_hal_msp.c
+  * Date               : 22/06/2014 09:00:07
+  * Description        : This file provides code for the MSP Initialization 
+  *                      and de-Initialization codes.
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2014 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+#include "synthesizer.h"
+extern DigitalOut myled;
+
+extern DMA_HandleTypeDef hdma_i2s2_ext_tx;
+
+void HAL_I2S_MspInit(I2S_HandleTypeDef* hi2s)
+{
+
+//  GPIO_InitTypeDef GPIO_InitStruct;
+  if(hi2s->Instance==SPI2)
+  {
+    /* Peripheral clock enable */
+    __SPI2_CLK_ENABLE();
+  
+    /**I2S2 GPIO Configuration    
+    PC3     ------> I2S2_SD
+    PB10     ------> I2S2_CK
+    PB12     ------> I2S2_WS
+    PC6     ------> I2S2_MCK 
+    */
+/*
+    GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_6;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+    GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_12;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+*/
+    /* Peripheral DMA init*/
+  
+    hdma_i2s2_ext_tx.Instance = DMA1_Stream4;
+    hdma_i2s2_ext_tx.Init.Channel = DMA_CHANNEL_0;
+    hdma_i2s2_ext_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+    hdma_i2s2_ext_tx.Init.PeriphInc = DMA_PINC_DISABLE;
+    hdma_i2s2_ext_tx.Init.MemInc = DMA_MINC_ENABLE;
+    hdma_i2s2_ext_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+    hdma_i2s2_ext_tx.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
+    hdma_i2s2_ext_tx.Init.Mode = DMA_NORMAL;
+    hdma_i2s2_ext_tx.Init.Priority = DMA_PRIORITY_LOW;
+    hdma_i2s2_ext_tx.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
+    hdma_i2s2_ext_tx.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
+    hdma_i2s2_ext_tx.Init.MemBurst = DMA_MBURST_SINGLE;
+    hdma_i2s2_ext_tx.Init.PeriphBurst = DMA_PBURST_SINGLE;
+    HAL_DMA_Init(&hdma_i2s2_ext_tx);
+
+    __HAL_LINKDMA(hi2s,hdmatx,hdma_i2s2_ext_tx);
+//    myled =1;
+  }
+
+}
+
+void HAL_I2S_MspDeInit(I2S_HandleTypeDef* hi2s)
+{
+
+  if(hi2s->Instance==SPI2)
+  {
+    /* Peripheral clock disable */
+    __SPI2_CLK_DISABLE();
+  
+    /**I2S2 GPIO Configuration    
+    PC3     ------> I2S2_SD
+    PB10     ------> I2S2_CK
+    PB12     ------> I2S2_WS
+    PC6     ------> I2S2_MCK 
+    */
+//    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_3|GPIO_PIN_6);
+
+//    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10|GPIO_PIN_12);
+
+    /* Peripheral DMA DeInit*/
+    HAL_DMA_DeInit(hi2s->hdmatx);
+  }
+
+}
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32f4xx_it.cpp	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,65 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_it.c
+  * @date    22/06/2014 09:00:07
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2014 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+#include "synthesizer.h"
+extern DigitalOut myled;
+extern DMA_HandleTypeDef hdma_i2s2_ext_tx;
+
+/******************************************************************************/
+/*            Cortex-M4 Processor Interruption and Exception Handlers         */ 
+/******************************************************************************/
+
+/**
+* @brief This function handles System tick timer.
+*/
+/*
+void SysTick_Handler(void)
+{
+  HAL_IncTick();
+  HAL_SYSTICK_IRQHandler();
+}
+*/
+
+/**
+* @brief This function handles DMA1 Stream4 global interrupt.
+*/
+void DMA1_Stream4_IRQHandler(void)
+{
+  HAL_NVIC_ClearPendingIRQ(DMA1_Stream4_IRQn);
+  HAL_DMA_IRQHandler(&hdma_i2s2_ext_tx);
+//    myled = ~myled;
+}
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32f4xx_it.h	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,58 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_it.h
+  * @date    19/06/2014 09:00:07
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  *
+  * COPYRIGHT(c) 2014 STMicroelectronics
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. Redistributions in binary form must reproduce the above copyright notice,
+  *      this list of conditions and the following disclaimer in the documentation
+  *      and/or other materials provided with the distribution.
+  *   3. Neither the name of STMicroelectronics nor the names of its contributors
+  *      may be used to endorse or promote products derived from this software
+  *      without specific prior written permission.
+  *
+  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_IT_H
+#define __STM32F4xx_IT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif 
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+//void SysTick_Handler(void);
+void DMA1_Stream4_IRQHandler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32F4xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/synthesizer.h	Thu Jul 03 11:59:07 2014 +0000
@@ -0,0 +1,53 @@
+/*
+    COPYRIGHT(c) 2014 p.igmon
+*/
+
+#ifndef SYNTHESIZER_H
+#define SYNTHESIZER_H
+
+typedef signed long S32;
+typedef signed short S16;
+typedef signed char S8;
+typedef unsigned long U32;
+typedef unsigned short U16;
+typedef unsigned char U8;
+
+#include "mbed.h"
+#include "cmsis.h"
+#include "stm32f401xe.h"
+#include "stm32f4xx.h"
+#include "stm32f4xx_hal.h"
+#include "stm32f4xx_hal_dma_ex.h"
+#include "stm32f4xx_hal_dma.h"
+#include "stm32f4xx_hal_i2s.h"
+
+#include "stm32f4xx_hal_conf.h"
+#include "stm32f4xx_it.h"
+
+#include "error.h"
+#include "pinmap.h"
+#include "PinNames.h"
+#include "gpio_irq_api.h"
+
+#define I2S2    SPI2
+#define DMA_BUFFERSIZE   2048
+
+
+typedef enum
+{
+  DMA_Idle = 0,  
+  DMA_HalfComplete,  
+  DMA_FullComplete,     
+}BUFFER_StateTypeDef;
+
+void MX_GPIO_Init(void);
+void uGen4_device_init(void);
+void init_dmabuffer(void);
+void i2s_dma_init(void);
+
+void wave_generate(void);
+
+void test_loop(void);
+void test_loop2(void);
+
+#endif