/******************** (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 ---------------------------------------------------------*/ SPI_InitTypeDef SPI_InitStructure; u8 SPI1_Buffer_Tx[BufferSize] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20}; u8 SPI2_Buffer_Tx[BufferSize] = {0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70}; u8 SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize]; u8 TxIdx = 0, RxIdx = 0, k = 0; volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED; volatile TestStatus TransferStatus3 = FAILED, TransferStatus4 = FAILED; ErrorStatus HSEStartUpStatus; /* Private functions ---------------------------------------------------------*/ void RCC_Configuration(void); void GPIO_Configuration(void); void NVIC_Configuration(void); TestStatus Buffercmp(u8* pBuffer1, u8* 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(); /* 1st phase: SPI1 Master and SPI2 Slave */ /* SPI1 Config -------------------------------------------------------------*/ SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; 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_LSB; SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI1, &SPI_InitStructure); /* SPI2 Config -------------------------------------------------------------*/ SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; SPI_Init(SPI2, &SPI_InitStructure); /* Enable SPI1 */ SPI_Cmd(SPI1, ENABLE); /* Enable SPI2 */ SPI_Cmd(SPI2, ENABLE); /* Transfer procedure */ while (TxIdx < BufferSize) { /* Wait for SPI1 Tx buffer empty */ while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); /* Send SPI2 data */ SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]); /* Send SPI1 data */ SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx++]); /* Wait for SPI2 data reception */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); /* Read SPI2 received data */ SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2); /* Wait for SPI1 data reception */ while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); /* Read SPI1 received data */ SPI1_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI1); } /* Check the corectness of written dada */ TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize); TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize); /* TransferStatus1, TransferStatus2 = PASSED, if the transmitted and received data are equal */ /* TransferStatus1, TransferStatus2 = FAILED, if the transmitted and received data are different */ /* 2nd phase: SPI1 Slave and SPI2 Master */ /* SPI1 Re-configuration ---------------------------------------------------*/ SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; SPI_Init(SPI1, &SPI_InitStructure); /* SPI2 Re-configuration ---------------------------------------------------*/ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_Init(SPI2, &SPI_InitStructure); /* Reset TxIdx, RxIdx indexes and receive tables values */ TxIdx = 0; RxIdx = 0; for (k = 0; k < BufferSize; k++) SPI2_Buffer_Rx[k] = 0; for (k = 0; k < BufferSize; k++) SPI1_Buffer_Rx[k] = 0; /* Transfer procedure */ while (TxIdx < BufferSize) { /* Wait for SPI2 Tx buffer empty */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); /* Send SPI1 data */ SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx]); /* Send SPI2 data */ SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx++]); /* Wait for SPI1 data reception */ while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); /* Read SPI1 received data */ SPI1_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI1); /* Wait for SPI2 data reception */ while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); /* Read SPI2 received data */ SPI2_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI2); } /* Check the corectness of written dada */ TransferStatus3 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize); TransferStatus4 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize); /* TransferStatus3, TransferStatus4 = PASSED, if the transmitted and received data are equal */ /* TransferStatus3, TransferStatus4 = FAILED, if the transmitted and received data 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 SPI1 clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_SPI1, ENABLE); /* SPI2 Periph clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, 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; /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); /* Configure SPI2 pins: SCK, MISO and MOSI ---------------------------------*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_Init(GPIOB, &GPIO_InitStructure); } /******************************************************************************* * Function Name : NVIC_Configuration * Description : Configures NVIC and Vector Table base location. * 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(u8* pBuffer1, u8* 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****/