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楼主 |
发表于 2016-6-8 13:49:57
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本帖最后由 any_014 于 2016-6-8 13:52 编辑
感谢回复。
主循环:
[mw_shl_code=applescript,true]while(1)
{
if(spi2RecvTempOk)
{
printf("\r\n");
for(i = 0; i < 30; i++)
{
if((spi2RecvTemp & 0xFF00) == 0x3a00)
printf("\r\n\r\nspi2RecvTemp[%d]:%04x", i, spi2RecvTemp);
else
printf("\r\nspi2RecvTemp[%d]:%04x", i, spi2RecvTemp);
}
spi2RecvTempOk = 0;
}
}[/mw_shl_code]
spi2中断部分:
[mw_shl_code=applescript,true]void SPI2_IRQHandler(void)
{
static u16 spi2Temp;
static u8 n;
spi2Temp = SPI_I2S_ReceiveData(SPI2);
if(spi2RecvTempOk == 0)
spi2RecvTemp[n] = spi2Temp;
if(n++ > 29)
{
n = 0;
spi2RecvTempOk = 1;
}
}
[/mw_shl_code]
spi初始化部分:
[mw_shl_code=applescript,true]void SPI2_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14; //PB14 - SPI2_MISO
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_15;//PB13 - SPI2_SCK, PB15 - SPI2_MOSI
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Slave;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS =SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE);
SPI_Cmd(SPI2, ENABLE);
}[/mw_shl_code]
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