GDF103 SPI读写W25Q64失败 STM32就很轻松就可以了不知道哪里出问题了

wgh1990 · 发表于 2017-3-24 17:29:16

如题。希望有大牛可以借鉴一下你用GD32F103读写W25Q64的代码满大街的STM32改过去就是读写不到

wgh1990 · 发表于 2017-3-24 17:29:17

SPI_InitTypeDef SPI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
SPI_I2S_DeInit(SPI3);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;  // PD7 CS íÆíì
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  //íÆíìêä3ö
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_SetBits(GPIOD,GPIO_Pin_7);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_5;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_SetBits(GPIOB,GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5);

SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
// SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
// SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI3, &SPI_InitStructure);

SPI_Cmd(SPI3, ENABLE);

SPI3_ReadWriteByte(0xff);//Æô¶ˉ′«êä

这句必须加不加上断电重新上电SPI就不工作了 SPI_I2S_DeInit(SPI3);  就一句话搞了3天我也是醉了不过GD32F103没想象中这么容易从STM32移植可能是我用到的功能比较多吧