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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"
/* Local includes ------------------------------------------------------------*/
/* Private typedef -----------------------------------------------------------*/
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus;
/* Private define ------------------------------------------------------------*/
#define BufferSize 32
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
I2S_InitTypeDef I2S_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
u16 I2S2_Buffer_Tx[BufferSize] = {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 SPI2_Buffer_Tx[BufferSize] = {0x5152, 0x5354, 0x5556, 0x5758, 0x595A, 0x5B5C,
0x5D5E, 0x5F60, 0x6162, 0x6364, 0x6566, 0x6768,
0x696A, 0x6B6C, 0x6D6E, 0x6F70, 0x7172, 0x7374,
0x7576, 0x7778, 0x797A, 0x7B7C, 0x7D7E, 0x7F80,
0x8182, 0x8384, 0x8586, 0x8788, 0x898A, 0x8B8C,
0x8D8E, 0x8F90};
u16 I2S3_Buffer_Rx[BufferSize];
u16 SPI3_Buffer_Rx[BufferSize];
u8 TxIdx = 0, RxIdx = 0;
volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED;
volatile TestStatus TransferStatus3 = FAILED;
ErrorStatus HSEStartUpStatus;
/* Private functions ---------------------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
TestStatus Buffercmp(u16* pBuffer1, u16* pBuffer2, u16 BufferLength);
/*******************************************************************************
* 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 I2S3 */
I2S_Cmd(SPI3, ENABLE);
/* Enable the I2S2 */
I2S_Cmd(SPI2, ENABLE);
/* Begin the communication in I2S mode */
while (RxIdx < BufferSize)
{
/* Wait the Tx buffer to be empty */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET)
{}
/* Send a data from I2S2 */
SPI_I2S_SendData(SPI2, I2S2_Buffer_Tx[TxIdx++]);
/* Wait the Rx buffer to be full */
while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{}
/* Store the I2S3 received data in the relative data table */
I2S3_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI3);
}
TransferStatus1 = Buffercmp(I2S3_Buffer_Rx, I2S2_Buffer_Tx, BufferSize);
/* 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 */
/* Reset TxIdx, RxIdx indexes */
TxIdx = 0;
RxIdx = 0;
/* Switch to SPI mode communication ----------------------------------------*/
/* SPI2 configuration */
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
/* SPI3 configuration ------------------------------------------------------*/
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_RxOnly;
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_Init(SPI3, &SPI_InitStructure);
/* Enable SPI3 */
SPI_Cmd(SPI3, ENABLE);
/* Enable SPI2 */
SPI_Cmd(SPI2, ENABLE);
/* Begin the communication in SPI mode */
while (RxIdx < BufferSize)
{
/* Wait the Tx buffer to be empty */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET)
{}
/* Send a data from SPI2 */
SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx++]);
/* Wait the Rx buffer to be full */
while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{}
/* Store the SPI3 received data in the relative data table */
SPI3_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI3);
}
TransferStatus2 = Buffercmp(SPI3_Buffer_Rx, SPI2_Buffer_Tx, BufferSize);
/* TransferStatus2 = PASSED, if the data transmitted from SPI2 and received by
SPI3 are the same
TransferStatus2 = FAILED, if the data transmitted from SPI2 and received by
SPI3 are different */
/* Reset TxIdx, RxIdx indexes and receive table values */
for (TxIdx = 0; TxIdx < BufferSize; TxIdx++)
{
I2S3_Buffer_Rx[TxIdx] = 0;
}
TxIdx = 0;
RxIdx = 0;
/* I2S2 Slave Transmitter to I2S3 Master Receiver communication ------------*/
/* I2S2 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveTx;
I2S_Init(SPI2, &I2S_InitStructure);
/* I2S3 configuration */
I2S_InitStructure.I2S_Mode = I2S_Mode_MasterRx;
I2S_Init(SPI3, &I2S_InitStructure);
/* Wait the Tx buffer to be empty */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET)
{}
/* Prepare the first data to be sent from the slave */
SPI_I2S_SendData(SPI2, I2S2_Buffer_Tx[TxIdx++]);
/* Enable the I2S2 */
I2S_Cmd(SPI2, ENABLE);
/* Enable the I2S3 */
I2S_Cmd(SPI3, ENABLE);
/* Begin the communication in I2S mode */
while (RxIdx < BufferSize)
{
/* Wait the Rx buffer to be full */
while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET)
{}
/* Store the I2S3 received data in the relative data table */
I2S3_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI3);
/* Wait the Tx buffer to be empty */
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET)
{}
/* Send a data from I2S2 */
SPI_I2S_SendData(SPI2, I2S2_Buffer_Tx[TxIdx++]);
}
TransferStatus3 = Buffercmp(I2S3_Buffer_Rx, I2S2_Buffer_Tx, BufferSize);
/* TransferStatus3 = PASSED, if the data transmitted from I2S2 and received by
I2S3 are the same
TransferStatus3 = 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)
{
#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
}
/*******************************************************************************
* 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;
}
#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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