diff options
Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/SPI_I2S_Switch/main.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/SPI_I2S_Switch/main.c | 447 |
1 files changed, 447 insertions, 0 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/SPI_I2S_Switch/main.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/SPI_I2S_Switch/main.c new file mode 100644 index 0000000..e701e6f --- /dev/null +++ b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/SPI_I2S_Switch/main.c @@ -0,0 +1,447 @@ +/** + ****************************************************************************** + * @file I2S/SPI_I2S_Switch/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. + * + * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f10x.h" + +/* Local includes ------------------------------------------------------------*/ + +/** @addtogroup STM32F10x_StdPeriph_Examples + * @{ + */ + +/** @addtogroup I2S_SPI_I2S_Switch + * @{ + */ + +/* 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; +uint16_t I2S3_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 SPI3_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}; + +__IO uint16_t I2S2_Buffer_Rx[BufferSize]; +__IO uint16_t SPI2_Buffer_Rx[BufferSize]; +__IO uint8_t 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); +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(); + + /* Deinitializes the SPI2 and SPI3 peripheral registers --------------------*/ + SPI_I2S_DeInit(SPI2); + SPI_I2S_DeInit(SPI3); + + /* 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; + + /* I2S3 Master Transmitter to I2S2 Slave Receiver communication ------------*/ + /* I2S3 configuration */ + I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx; + I2S_Init(SPI3, &I2S_InitStructure); + + /* I2S2 configuration */ + I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx; + I2S_Init(SPI2, &I2S_InitStructure); + + /* 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 Tx buffer to be empty */ + while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET) + {} + /* Send a data from I2S3 */ + SPI_I2S_SendData(SPI3, I2S3_Buffer_Tx[TxIdx++]); + + /* Wait the Rx buffer to be full */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) + {} + /* Store the I2S2 received data in the relative data table */ + I2S2_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI2); + } + + TransferStatus1 = Buffercmp((uint16_t *)I2S2_Buffer_Rx, I2S3_Buffer_Tx, BufferSize); + /* TransferStatus1 = PASSED, if the data transmitted from I2S3 and received by + I2S2 are the same + TransferStatus1 = FAILED, if the data transmitted from I2S3 and received by + I2S2 are different */ + + /* Reset TxIdx, RxIdx indexes */ + TxIdx = 0; + RxIdx = 0; + + /* Switch to SPI mode communication ----------------------------------------*/ + /* SPI3 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(SPI3, &SPI_InitStructure); + + /* SPI2 configuration ------------------------------------------------------*/ + SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_RxOnly; + SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; + SPI_Init(SPI2, &SPI_InitStructure); + + /* Enable SPI2 */ + SPI_Cmd(SPI2, ENABLE); + /* Enable SPI3 */ + SPI_Cmd(SPI3, ENABLE); + + /* Begin the communication in SPI mode */ + while (RxIdx < BufferSize) + { + /* Wait the Tx buffer to be empty */ + while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET) + {} + /* Send a data from SPI3 */ + SPI_I2S_SendData(SPI3, SPI3_Buffer_Tx[TxIdx++]); + + /* Wait the Rx buffer to be full */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) + {} + /* Store the SPI2 received data in the relative data table */ + SPI2_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI2); + } + + TransferStatus2 = Buffercmp((uint16_t *)SPI2_Buffer_Rx, SPI3_Buffer_Tx, BufferSize); + /* TransferStatus2 = PASSED, if the data transmitted from SPI3 and received by + SPI2 are the same + TransferStatus2 = FAILED, if the data transmitted from SPI3 and received by + SPI2 are different */ + + /* Reset TxIdx, RxIdx indexes and receive table values */ + for (TxIdx = 0; TxIdx < BufferSize; TxIdx++) + { + I2S2_Buffer_Rx[TxIdx] = 0; + } + + TxIdx = 0; + RxIdx = 0; + + /* I2S3 Slave Transmitter to I2S2 Master Receiver communication ------------*/ + /* I2S3 configuration */ + I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveTx; + I2S_Init(SPI3, &I2S_InitStructure); + + /* I2S2 configuration */ + I2S_InitStructure.I2S_Mode = I2S_Mode_MasterRx; + I2S_Init(SPI2, &I2S_InitStructure); + + /* Wait the Tx buffer to be empty */ + while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET) + {} + /* Prepare the first data to be sent from the slave */ + SPI_I2S_SendData(SPI3, I2S3_Buffer_Tx[TxIdx++]); + + /* 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 Rx buffer to be full */ + while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) + {} + /* Store the I2S2 received data in the relative data table */ + I2S2_Buffer_Rx[RxIdx++] = SPI_I2S_ReceiveData(SPI2); + + /* Wait the Tx buffer to be empty */ + while (SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET) + {} + /* Send a data from I2S3 */ + SPI_I2S_SendData(SPI3, I2S3_Buffer_Tx[TxIdx++]); + } + + TransferStatus3 = Buffercmp((uint16_t *)I2S2_Buffer_Rx, I2S3_Buffer_Tx, BufferSize); + /* TransferStatus3 = PASSED, if the data transmitted from I2S3 and received by + I2S2 are the same + TransferStatus3 = FAILED, if the data transmitted from I2S3 and received by + I2S2 are different */ + + while (1) + {} +} + +/** + * @brief Configures the different system clocks. + * @param None + * @retval 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 */ + RCC_PCLK2Config(RCC_HCLK_Div1); + + /* PCLK1 = HCLK/2 */ + RCC_PCLK1Config(RCC_HCLK_Div2); + + /* ADCCLK = PCLK2/4 */ + RCC_ADCCLKConfig(RCC_PCLK2_Div4); + +#ifndef STM32F10X_CL + /* PLLCLK = 8MHz * 9 = 72 MHz */ + RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); + +#else + /* Configure PLLs *********************************************************/ + /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */ + RCC_PREDIV2Config(RCC_PREDIV2_Div5); + RCC_PLL2Config(RCC_PLL2Mul_8); + + /* Enable PLL2 */ + RCC_PLL2Cmd(ENABLE); + + /* Wait till PLL2 is ready */ + while (RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET) + {} + + /* PLL configuration: PLLCLK = (PLL2 / 5) * 9 = 72 MHz */ + RCC_PREDIV1Config(RCC_PREDIV1_Source_PLL2, RCC_PREDIV1_Div5); + RCC_PLLConfig(RCC_PLLSource_PREDIV1, RCC_PLLMul_9); + + /* PPL3 configuration: PLL3CLK = (HSE / 5) * 11 = PLL3_VCO = 110 MHz */ + RCC_PLL3Config(RCC_PLL3Mul_11); + /* Enable PLL3 */ + RCC_PLL3Cmd(ENABLE); + /* Wait till PLL3 is ready */ + while (RCC_GetFlagStatus(RCC_FLAG_PLL3RDY) == RESET) + {} + + /* Configure I2S clock source: On Connectivity Line Devices, the I2S can be + clocked by PLL3 VCO instead of SYS_CLK in order to guarantee higher + precision */ + RCC_I2S3CLKConfig(RCC_I2S3CLKSource_PLL3_VCO); + RCC_I2S2CLKConfig(RCC_I2S2CLKSource_PLL3_VCO); +#endif + + /* 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); + +#ifdef USE_STM3210C_EVAL + /* GPIOC Clock enable (for the SPI3 remapped pins) */ + RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); +#endif /* USE_STM3210C_EVAL */ + + /* SPI2 and SPI3 clocks enable */ + RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2 | RCC_APB1Periph_SPI3, ENABLE); +} + +/** + * @brief Configures the different GPIO ports. + * @param None + * @retval None + */ +void GPIO_Configuration(void) +{ + GPIO_InitTypeDef GPIO_InitStructure; + +#ifdef USE_STM3210E_EVAL + /* Disable the JTAG interface and enable the SWJ interface + This operation is not necessary for Connectivity Line devices since + SPI3 I/Os can be remapped on other GPIO pins */ + GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE); +#endif /* USE_STM3210E_EVAL */ + + /* 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); + +#ifdef USE_STM3210C_EVAL + + /* Remap SPI3 on PC10-PC11-PC12-PA4 GPIO pins ------------------------*/ + GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE); + + /* Configure SPI3 pins: CK and SD ------------------------------------*/ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_12; + GPIO_Init(GPIOC, &GPIO_InitStructure); + + /* Configure SPI3 pins: WS -------------------------------------------*/ + GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; + GPIO_Init(GPIOA, &GPIO_InitStructure); + +#elif defined (USE_STM3210E_EVAL) + + /* 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); + +#endif /* USE_STM3210C_EVAL */ +} + +/** + * @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****/ |