[问答]

STM32F030 的SPI问题

5143 STM32

问答对人有帮助，内容完整，我也想知道答案 0 void NRF24L01_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE); // RCC_APB2PeriphClockCmd(RCC_NRF24L01_CE, ENABLE); //Ê¹ÄÜGPIOµÄÊ±ÖÓ GPIO_InitStructure.GPIO_Pin = NRF24L01_CE; //NRF24L01 Ä£¿éÆ¬Ñ¡ÐÅºÅ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //ÍÆÍìÊä³ö GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIO_NRF24L01_CE, &GPIO_InitStructure); // RCC_APB2PeriphClockCmd(RCC_NRF24L01_CSN, ENABLE); //Ê¹ÄÜGPIOµÄÊ±ÖÓ GPIO_InitStructure.GPIO_Pin = NRF24L01_CSN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //ÍÆÍìÊä³ö GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIO_NRF24L01_CSN, &GPIO_InitStructure); Set_NRF24L01_CE; Set_NRF24L01_CSN; //ÅäÖÃNRF2401µÄIRQ GPIO_InitStructure.GPIO_Pin = NRF24L01_IRQ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN ; //ÉÏÀÊäÈë GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; GPIO_Init(GPIO_NRF24L01_IRQ, &GPIO_InitStructure); GPIO_SetBits(GPIO_NRF24L01_IRQ,NRF24L01_IRQ); SPI1_Configuration(); //³õÊ¼»¯SPI Clr_NRF24L01_CE; //Ê¹ÄÜ24L01 Set_NRF24L01_CSN; //SPIÆ¬Ñ¡È¡Ïû } void SPI1_Configuration(void) { SPI_InitTypeDef SPI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE); RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA,ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 \| GPIO_Pin_6 \| GPIO_Pin_7 ; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_PinAFConfig(GPIOA,GPIO_PinSource5\|GPIO_PinSource6\|GPIO_PinSource7,GPIO_AF_0);//Á¬½Óµ½ÍâÉè // GPIO_SetBits(GPIOA,GPIO_Pin_5\|GPIO_Pin_6\|GPIO_Pin_7); GPIO_ResetBits(GPIOA, GPIO_Pin_1); // SPI_I2S_DeInit(SPI1); SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //ÉèÖÃSPIµ¥Ïò»òÕßË«ÏòµÄÊý¾ÝÄ£Ê½:SPIÉèÖÃÎªË«ÏßË«ÏòÈ«Ë«¹¤ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //ÉèÖÃSPI¹¤×÷Ä£Ê½:ÉèÖÃÎªÖ÷SPI SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //ÉèÖÃSPIµÄÊý¾Ý´óÐ¡:SPI·¢ËÍ½ÓÊÕ8Î»Ö¡½á¹¹ SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; //Ñ¡ÔñÁË´®ÐÐÊ±ÖÓµÄÎÈÌ¬:Ê±ÖÓÐü¿Õ¸ß SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; //Êý¾Ý²¶»ñÓÚµÚ¶þ¸öÊ±ÖÓÑØ SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSSÐÅºÅÓÉÓ²¼þ£¨NSS¹Ü½Å£©»¹ÊÇÈí¼þ£¨Ê¹ÓÃSSIÎ»£©¹ÜÀí:ÄÚ²¿NSSÐÅºÅÓÐSSIÎ»¿ØÖÆ SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; //¶¨Òå²¨ÌØÂÊÔ¤·ÖÆµµÄÖµ:²¨ÌØÂÊÔ¤·ÖÆµÖµÎª256 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //Ö¸¶¨Êý¾Ý´«Êä´ÓMSBÎ»»¹ÊÇLSBÎ»¿ªÊ¼:Êý¾Ý´«Êä´ÓMSBÎ»¿ªÊ¼ SPI_InitStructure.SPI_CRCPolynomial = 7; //CRCÖµ¼ÆËãµÄ¶àÏîÊ½ SPI_RxFIFOThresholdConfig(SPI1,SPI_RxFIFOThreshold_QF);//ÅäÖÃ SPI µÄ FIFO ½ÓÊÕãÐÖµ(½ÓÊÕ8bits¾ÍÖÃ SPI_I2S_FLAG_RXNE) SPI_Init(SPI1, &SPI_InitStructure); //¸ù¾ÝSPI_InitStructÖÐÖ¸¶¨µÄ²ÎÊý³õÊ¼»¯ÍâÉèSPIx¼Ä´æÆ÷ SPI_Cmd(SPI1, ENABLE); //Ê¹ÄÜSPIÍâÉè // SPI1_ReadWriteByte(0xff); GPIO_SetBits(GPIOA, GPIO_Pin_1); } u8 SPI1_ReadWriteByte(u8 TxData) //SPI¶ÁÐ´Êý¾Ýº¯Êý { while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); SPI_SendData8(SPI1, TxData); // SPI_I2S_SendData16(SPI1, TxData); while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); return SPI_ReceiveData8(SPI1); // return SPI_I2S_ReceiveData16(SPI1); } 各位大神看看哪里出问题了啊！ 0
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