From afbb4cc73c44b6321cae39dbe46b97155805097d Mon Sep 17 00:00:00 2001 From: Trygve Laugstøl Date: Sun, 13 Dec 2015 21:03:11 +0100 Subject: wip --- .../STM32F10x_StdPeriph_Examples/SPI/CRC/main.c | 291 +++++++++++++++++++++ 1 file changed, 291 insertions(+) create mode 100644 tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c') diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c new file mode 100644 index 0000000..ef642cd --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/CRC/main.c @@ -0,0 +1,291 @@ +/** + ****************************************************************************** + * @file SPI/CRC/main.c + * @author MCD Application Team + * @version V3.5.0 + * @date 08-April-2011 + * @brief Main program body + ****************************************************************************** + * @attention + * + * 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. + * + *

© COPYRIGHT 2011 STMicroelectronics

+ ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup SPI_CRC + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; + +/* Private define ------------------------------------------------------------*/ +#define BufferSize 32 + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +SPI_InitTypeDef SPI_InitStructure; +uint16_t 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}; +uint16_t 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}; +uint16_t SPI1_Buffer_Rx[BufferSize], SPI2_Buffer_Rx[BufferSize]; +uint32_t TxIdx = 0, RxIdx = 0; +__IO uint16_t CRC1Value = 0, CRC2Value = 0; +volatile TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED; + +/* Private functions ---------------------------------------------------------*/ +void RCC_Configuration(void); +void GPIO_Configuration(void); +TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength); + +/** + * @brief Main program + * @param None + * @retval None + */ +int main(void) +{ + /*!< At this stage the microcontroller clock setting is already configured, + this is done through SystemInit() function which is called from startup + file (startup_stm32f10x_xx.s) before to branch to application main. + To reconfigure the default setting of SystemInit() function, refer to + system_stm32f10x.c file + */ + + /* System clocks configuration ---------------------------------------------*/ + RCC_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) + {} +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval None + */ +void RCC_Configuration(void) +{ + /* PCLK2 = HCLK/2 */ + RCC_PCLK2Config(RCC_HCLK_Div2); + + /* 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); +} + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Configure SPI1 pins: SCK, MISO and MOSI ---------------------------------*/ + /* Confugure SCK and MOSI pins as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(GPIOA, &GPIO_InitStructure); + /* Confugure MISO pin as Input Floating */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(GPIOA, &GPIO_InitStructure); + + /* Configure SPI2 pins: SCK, MISO and MOSI ---------------------------------*/ + /* Confugure SCK and MOSI pins as Input Floating */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_15; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; + GPIO_Init(GPIOB, &GPIO_InitStructure); + /* Confugure MISO pin as Alternate Function Push Pull */ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; + GPIO_Init(GPIOB, &GPIO_InitStructure); + +} + +/** + * @brief Compares two buffers. + * @param pBuffer1, pBuffer2: buffers to be compared. + * @param BufferLength: buffer's length + * @retval PASSED: pBuffer1 identical to pBuffer2 + * FAILED: pBuffer1 differs from pBuffer2 + */ +TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength) +{ + while (BufferLength--) + { + if (*pBuffer1 != *pBuffer2) + { + return FAILED; + } + + pBuffer1++; + pBuffer2++; + } + + return PASSED; +} + +#ifdef USE_FULL_ASSERT + +/** + * @brief Reports the name of the source file and the source line number + * where the assert_param error has occurred. + * @param file: pointer to the source file name + * @param line: assert_param error line source number + * @retval None + */ +void assert_failed(uint8_t* file, uint32_t 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 2011 STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3