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本帖最后由 gunsir 于 2014-10-14 08:36 编辑
仿真的时候正常,运行的时候只读了第一次~~之后数据再也没有变化,奇怪~~
void HMC5983_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // Enable the clock for SPI1
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
// SPI1 CS
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// SPI1 - HMC5983
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
HMC5983_SPI_Stop();
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; // È«Ë«¹¤
SPI_InitStructure.SPI_Mode = SPI_Mode_Master; // Ö÷»ú
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // Êý¾Ý³¤¶È
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; // ʱÖÓ¿ÕÏÐʱµçƽѡÔñ
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // Êý¾ÝʱÖÓÌø±äÑØÑ¡Ôñ
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // Èí¼þÉèÖÃƬѡÐźÅ
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16; // ʱÖÓ·ÖƵ
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; // Êý¾Ý´óС¶ËÑ¡Ôñ
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1,&SPI_InitStructure);
SPI_Cmd(SPI1,ENABLE);
Easydelay(10000);
// Configration
HMC5983_Write(HMC5983_Reg_Mode_Reg,0x00);
Easydelay(10000);
HMC5983_Write(HMC5983_Reg_Confg_RegA,0xFC);
Easydelay(10000);
HMC5983_Write(HMC5983_Reg_Confg_RegB,0x60);
Easydelay(10000);
}
// Read a series of data from HMC5983
void HMC5983_Update(void)
{
HMC5983_SPI_Start();
Sensor_data(SPI1,(HMC5983_Reg_Data_X_MSB|0xC0));
HMC5983_Readings[0] = Sensor_data(SPI1,0x00);
HMC5983_Readings[1] = Sensor_data(SPI1,0x00);
HMC5983_Readings[2] = Sensor_data(SPI1,0x00);
HMC5983_Readings[3] = Sensor_data(SPI1,0x00);
HMC5983_Readings[4] = Sensor_data(SPI1,0x00);
HMC5983_Readings[5] = Sensor_data(SPI1,0x00);
HMC5983_SPI_Stop();
Mag_X = (HMC5983_Readings[0]<<8)|HMC5983_Readings[1];
Mag_Z = (HMC5983_Readings[2]<<8)|HMC5983_Readings[3];
Mag_Y = (HMC5983_Readings[4]<<8)|HMC5983_Readings[5];
}
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阿莫论坛20周年了!感谢大家的支持与爱护!!
一只鸟敢站在脆弱的枝条上歇脚,它依仗的不是枝条不会断,而是自己有翅膀,会飞。
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