103芯片与091芯片的spi有什么区别吗

我就是我183 · 发表于 2015-12-19 11:43:06

091芯片初始化与读写

[mw_shl_code=c,true] void SPI2_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; SPI_InitTypeDef SPI_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE ); RCC_APB1PeriphClockCmd( RCC_APB1Periph_SPI2, ENABLE );//SPI2?±?????? GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_0); GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_0); GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_0); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //PB13/14/15???????ì???? GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; GPIO_Init(GPIOB, &GPIO_InitStructure);//??????GPIOB GPIO_SetBits(GPIOB,GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15); //PB13/14/15???? SPI_I2S_DeInit(SPI2); SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //?è??SPI???ò?ò?????ò??????????:SPI?è???????????ò?????¤ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //?è??SPI?¤×÷????:?è?????÷SPI SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //?è??SPI???????ó??:SPI·???????8?????á?? SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //?®???????±????????×??????????? SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //?®???????±????????????±????¨?????ò?????©????±????ù SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS???????????¨NSS?????©?????í???¨????SSI???©???í:????NSS??????SSI?????? SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; //?¨???¨?????¤·???????:?¨?????¤·???????256 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //???¨??????????MSB??????LSB??????:??????????MSB?????? SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC?????????à???? SPI_Init(SPI2, &SPI_InitStructure); //?ù??SPI_InitStruct?????¨???????????????èSPIx?????÷ SPI_Cmd(SPI2, ENABLE); //????SPI???è SPI2_ReadWriteByte(0xff);//???????? } //SPI ?????è?????? //SpeedSet: //SPI_BaudRatePrescaler_2 2·??? //SPI_BaudRatePrescaler_8 8·??? //SPI_BaudRatePrescaler_16 16·??? //SPI_BaudRatePrescaler_256 256·??? void SPI2_SetSpeed(u8 SPI_BaudRatePrescaler) { assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler)); SPI2->CR1&=0XFFC7; SPI2->CR1|=SPI_BaudRatePrescaler; //?è??SPI2???? SPI_Cmd(SPI2,ENABLE); } //SPIx ????????×??? //TxData:????????×??? //·?????:????????×??? u8 SPI2_ReadWriteByte(u8 TxData) { u8 retry=0; while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET) //?ì?é???¨??SPI±ê?????è????·?:·?????????±ê???? { retry++; if(retry>200)return 0; } SPI_SendData8(SPI2, TxData); //?¨?????èSPIx·??????????? retry=0; while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) //?ì?é???¨??SPI±ê?????è????·?:????????·???±ê???? { retry++; if(retry>200)return 0; } return SPI_ReceiveData8(SPI2); //·????¨??SPIx×??ü?????????? }[/mw_shl_code]

103芯片的初始化与读写

[mw_shl_code=c,true] void SPI2_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; SPI_InitTypeDef SPI_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE );//PORTB?±?????? RCC_APB1PeriphClockCmd( RCC_APB1Periph_SPI2, ENABLE );//SPI2?±?????? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //PB13/14/15???????ì???? GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure);//??????GPIOB GPIO_SetBits(GPIOB,GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15); //PB13/14/15???? SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //?è??SPI???ò?ò?????ò??????????:SPI?è???????????ò?????¤ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //?è??SPI?¤×÷????:?è?????÷SPI SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //?è??SPI???????ó??:SPI·???????8?????á?? SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //?®???????±????????×??????????? SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //?®???????±????????????±????¨?????ò?????©????±????ù SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS???????????¨NSS?????©?????í???¨????SSI???©???í:????NSS??????SSI?????? SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; //?¨???¨?????¤·???????:?¨?????¤·???????256 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //???¨??????????MSB??????LSB??????:??????????MSB?????? SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC?????????à???? SPI_Init(SPI2, &SPI_InitStructure); //?ù??SPI_InitStruct?????¨???????????????èSPIx?????÷ SPI_Cmd(SPI2, ENABLE); //????SPI???è SPI2_ReadWriteByte(0xff);//???????? } //SPI ?????è?????? //SpeedSet: //SPI_BaudRatePrescaler_2 2·??? //SPI_BaudRatePrescaler_8 8·??? //SPI_BaudRatePrescaler_16 16·??? //SPI_BaudRatePrescaler_256 256·??? void SPI2_SetSpeed(u8 SPI_BaudRatePrescaler) { assert_param(IS_SPI_BAUDRATE_PRESCALER(SPI_BaudRatePrescaler)); SPI2->CR1&=0XFFC7; SPI2->CR1|=SPI_BaudRatePrescaler; //?è??SPI2???? SPI_Cmd(SPI2,ENABLE); } //SPIx ????????×??? //TxData:????????×??? //·?????:????????×??? u8 SPI2_ReadWriteByte(u8 TxData) { u8 retry=0; while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET) //?ì?é???¨??SPI±ê?????è????·?:·?????????±ê???? { retry++; if(retry>200)return 0; } SPI_I2S_SendData(SPI2, TxData); //?¨?????èSPIx·??????????? retry=0; while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) //?ì?é???¨??SPI±ê?????è????·?:????????·???±ê???? { retry++; if(retry>200)return 0; } return SPI_I2S_ReceiveData(SPI2); //·????¨??SPIx×??ü?????????? }[/mw_shl_code]

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