From 32e57dac2e61e79b029593eb4d34d727bcc10678 Mon Sep 17 00:00:00 2001 From: iperry Date: Thu, 17 Dec 2009 02:37:07 +0000 Subject: Initial commit of library code, moved from leaftest repo git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123 --- src/stm32lib/examples/SPI/CRC/main.c | 326 +++++++++++++++++++++++++++++++++++ 1 file changed, 326 insertions(+) create mode 100755 src/stm32lib/examples/SPI/CRC/main.c (limited to 'src/stm32lib/examples/SPI/CRC/main.c') diff --git a/src/stm32lib/examples/SPI/CRC/main.c b/src/stm32lib/examples/SPI/CRC/main.c new file mode 100755 index 0000000..72d3307 --- /dev/null +++ b/src/stm32lib/examples/SPI/CRC/main.c @@ -0,0 +1,326 @@ +/******************** (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; +u16 SPI1_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 SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize]; +u8 TxIdx = 0, RxIdx = 0; +vu16 CRC1Value = 0, CRC2Value = 0; +volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = 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(); + + /* SPI1 configuration ------------------------------------------------------*/ + SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; + 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_8; + SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; + SPI_InitStructure.SPI_CRCPolynomial = 7; + SPI_Init(SPI1, &SPI_InitStructure); + + /* SPI2 configuration ------------------------------------------------------*/ + SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; + SPI_Init(SPI2, &SPI_InitStructure); + + /* Enable SPI1 CRC calculation */ + SPI_CalculateCRC(SPI1, ENABLE); + /* Enable SPI2 CRC calculation */ + SPI_CalculateCRC(SPI2, ENABLE); + + /* Enable SPI1 */ + SPI_Cmd(SPI1, ENABLE); + /* Enable SPI2 */ + SPI_Cmd(SPI2, ENABLE); + + /* Transfer procedure */ + while (TxIdx < BufferSize - 1) + { + /* 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); + } + + /* Wait for SPI1 Tx buffer empty */ + while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); + /* Wait for SPI2 Tx buffer empty */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); + + /* Send last SPI2_Buffer_Tx data */ + SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[TxIdx]); + /* Enable SPI2 CRC transmission */ + SPI_TransmitCRC(SPI2); + /* Send last SPI1_Buffer_Tx data */ + SPI_I2S_SendData(SPI1, SPI1_Buffer_Tx[TxIdx]); + /* Enable SPI1 CRC transmission */ + SPI_TransmitCRC(SPI1); + + /* Wait for SPI1 last data reception */ + while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPI1 last received data */ + SPI1_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI1); + + /* Wait for SPI2 last data reception */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); + /* Read SPI2 last received data */ + SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2); + + /* Wait for SPI1 data reception: CRC transmitted by SPI2 */ + while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); + /* Wait for SPI2 data reception: CRC transmitted by SPI1 */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); + + /* Check the received data with the send ones */ + TransferStatus1 = Buffercmp(SPI2_Buffer_Rx, SPI1_Buffer_Tx, BufferSize); + TransferStatus2 = Buffercmp(SPI1_Buffer_Rx, SPI2_Buffer_Tx, BufferSize); + /* TransferStatus1, TransferStatus2 = PASSED, if the data transmitted and received + are correct */ + /* TransferStatus1, TransferStatus2 = FAILED, if the data transmitted and received + are different */ + + /* Test on the SPI1 CRC Error flag */ + if ((SPI_I2S_GetFlagStatus(SPI1, SPI_FLAG_CRCERR)) == SET) + { + TransferStatus2 = FAILED; + } + + /* Test on the SPI2 CRC Error flag */ + if ((SPI_I2S_GetFlagStatus(SPI2, SPI_FLAG_CRCERR)) == SET) + { + TransferStatus1 = FAILED; + } + + /* Read SPI1 received CRC value */ + CRC1Value = SPI_I2S_ReceiveData(SPI1); + /* Read SPI2 received CRC value */ + CRC2Value = SPI_I2S_ReceiveData(SPI2); + + 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 : 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****/ -- cgit v1.2.3