/******************** (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****/