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/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name : main.c
* Author : MCD Application Team
* Version : V2.0.1
* Date : 06/13/2008
* Description : Main program body
********************************************************************************
* 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.
*******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
I2S_InitTypeDef I2S_InitStructure;
u16 I2S2_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};
u16 I2S3_Buffer_Rx[32];
volatile u8 TxIdx = 0, RxIdx = 0;
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
ErrorStatus HSEStartUpStatus;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u16* pBuffer1, u16* pBuffer2, u16 BufferLength);
TestStatus Buffercmp24bits(u16* pBuffer1, u16* pBuffer2, u16 BufferLength);
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : main
* Description : Main program
* Input : None
* Output : None
* Return : None
*******************************************************************************/
int main(void)
{
#ifdef DEBUG
debug();
#endif
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* 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;
/* I2S2 Master Transmitter to I2S3 Slave Receiver communication -----------*/
/* I2S2 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
I2S_Init(SPI2, &I2S_InitStructure);
/* I2S3 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx;
I2S_Init(SPI3, &I2S_InitStructure);
/* Enable the I2S2 TxE interrupt */
SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_TXE, ENABLE);
/* Enable the I2S3 RxNE interrupt */
SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_RXNE, ENABLE);
/* Enable the I2S3 */
I2S_Cmd(SPI3, ENABLE);
/* Enable the I2S2 */
I2S_Cmd(SPI2, ENABLE);
/* Wait the end of communication */
while (RxIdx < 32)
{}
TransferStatus1 = Buffercmp(I2S3_Buffer_Rx, I2S2_Buffer_Tx, 32);
/* TransferStatus1 = PASSED, if the data transmitted from I2S2 and received by
I2S3 are the same
TransferStatus1 = FAILED, if the data transmitted from I2S2 and received by
I2S3 are different */
/* Reinitialize the buffers */
for (RxIdx = 0; RxIdx < 32; RxIdx++)
{
I2S3_Buffer_Rx[RxIdx] = 0;
}
TxIdx = 0;
RxIdx = 0;
/* 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;
/* I2S2 Master Transmitter to I2S3 Slave Receiver communication -----------*/
/* I2S2 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx;
I2S_Init(SPI2, &I2S_InitStructure);
/* I2S3 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx;
I2S_Init(SPI3, &I2S_InitStructure);
/* Enable the I2S2 TxE interrupt */
SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_TXE, ENABLE);
/* Enable the I2S3 RxNE interrupt */
SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_RXNE, ENABLE);
/* Enable the I2S3 */
I2S_Cmd(SPI3, ENABLE);
/* Enable the I2S2 */
I2S_Cmd(SPI2, ENABLE);
/* Wait the end of communication */
while (RxIdx < 32)
{}
TransferStatus2 = Buffercmp24bits(I2S3_Buffer_Rx, I2S2_Buffer_Tx, 32);
/* TransferStatus2 = PASSED, if the data transmitted from I2S2 and received by
I2S3 are the same
TransferStatus2 = FAILED, if the data transmitted from I2S2 and received by
I2S3 are different */
while (1)
{}
}
/*******************************************************************************
* Function Name : RCC_Configuration
* Description : Configures the different system clocks.
* Input : None
* Output : None
* Return : 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/2 */
RCC_PCLK2Config(RCC_HCLK_Div2);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* 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);
/* SPI2 and SPI3 clocks enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2 | RCC_APB1Periph_SPI3, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Disable the JTAG interface and enable the SWJ interface */
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);
/* 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_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure SPI3 pins: CK and SD */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_5;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure SPI3 pins: WS */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configure the nested vectored interrupt controller.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* SPI2 IRQ Channel configuration */
NVIC_InitStructure.NVIC_IRQChannel = SPI2_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* SPI3 IRQ channel configuration */
NVIC_InitStructure.NVIC_IRQChannel = SPI3_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_Init(&NVIC_InitStructure);
}
/*******************************************************************************
* Function Name : Buffercmp
* Description : Compares two buffers.
* Input : - pBuffer1, pBuffer2: buffers to be compared.
* : - BufferLength: buffer's length
* Output : None
* Return : PASSED: pBuffer1 identical to pBuffer2
* FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp(u16* pBuffer1, u16* pBuffer2, u16 BufferLength)
{
while (BufferLength--)
{
if (*pBuffer1 != *pBuffer2)
{
return FAILED;
}
pBuffer1++;
pBuffer2++;
}
return PASSED;
}
/*******************************************************************************
* Function Name : Buffercmp24bits
* Description : Compares two buffers in 24 bits data format.
* Input : - pBuffer1, pBuffer2: buffers to be compared.
* : - BufferLength: buffer's length
* Output : None
* Return : PASSED: pBuffer1 identical to pBuffer2
* FAILED: pBuffer1 differs from pBuffer2
*******************************************************************************/
TestStatus Buffercmp24bits(u16* pBuffer1, u16* pBuffer2, u16 BufferLength)
{
while (BufferLength--)
{
if (*pBuffer1 != *pBuffer2)
{
if (*pBuffer1 != (*pBuffer2 & 0xFF00))
{
return FAILED;
}
}
pBuffer1++;
pBuffer2++;
}
return PASSED;
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* Input : - file: pointer to the source file name
* - line: assert_param error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 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 2008 STMicroelectronics *****END OF FILE****/
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