LMH_6401.rar_6401_LMH6401_LMH6401的spi_LMH_6401_divisionspf

#include "lmh6401.h" #include "delay.h" void LMH_Init() { GPIO_InitTypeDef GPIO_InitStructure; RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);//使能GPIO时钟 GPIO_InitStructure.GPIO_Pin = CS | SCK | MOSI;// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉 GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO GPIO_InitStructure.GPIO_Pin = MISO;// GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;//普通输入模式 GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;//推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIO LMH_CS = 1; LMH_SCK = 0; LMH_MOSI = 0; } u8 LMH_SendData(u8 Addre ,u8 Data) { u8 rxd; u8 i; delay_us(2); LMH_CS =0; for(i=0; i<8;i++) { LMH_MOSI = Addre>>7; Addre <<= 1; delay_us(2); LMH_SCK = 1; delay_us(2); LMH_SCK = 0; } for(i=0;i<8;i++) { LMH_MOSI = Data>>7; Data <<= 1; delay_us(2); LMH_SCK = 1; rxd = (rxd<<1) + LMH_MISO(); delay_us(2); LMH_SCK = 0; } LMH_CS = 1; delay_us(2); return rxd; } u8 LMH_RevID(void) { u8 id; id = LMH_SendData(Revision_ID,0); return id; } u8 LMH_ProID(void) { u8 id; id = LMH_SendData(Product_ID,0); return id; } u8 LMH_Gain(u8 gain) { u8 g; gain = gain&0x3F; g = LMH_SendData(GainControl,gain); return g; }