新手求助，AD的驱动总是不对

linger007

原子哥，今天我调试32驱动ADS1118,用的模拟IO口，用示波器看时序应该没问题啊，但是就是 MISO口读不到数据，代码附在下面

[mw_shl_code=c,true] ADS1118.c void ADS1118Init()//ADS?????????? { GPIO_InitTypeDef GPIO_InitStructure; //SCLK-->GPIOD.0 CS-->GPIOD.1 DIN-->GPIOD.2 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE);//????GPIOD?±?? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2;//PD0~3 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //?è?????ì???? GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; //IO????????50MHz GPIO_Init(GPIOD, &GPIO_InitStructure);//??????GPIOD.0,1,2 //Dout-->GPIOD.3 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //???????? GPIO_Init(GPIOD, &GPIO_InitStructure);//??????GPIOD.3 CS_H ; SCLK_L ; DIN_L; } uint16_t Write_ADS1118(uint16_t config)//AD×??????? { uint16_t ADdata=0; uint8_t i; //?????ü???????÷ CS_L; delay_ms(1); for(i=0;i<16;i++) { SCLK_H; if(config & 0x8000) DIN_H; else DIN_L; config<<=1; delay_us(1); SCLK_L; delay_us(1); } //??????·?×????ê?? CS_H; delay_us(10); CS_L; //???????? if(DOUT==0)//????×?????·??ê?? { for(i=0;i<16;i++) { SCLK_H; delay_us(1); if(DOUT) ADdata= ADdata|0x01; else ADdata= ADdata|0x00; ADdata<<=1; SCLK_L; delay_us(1); } } CS_H ; SCLK_L; DIN_L; return ADdata; } ADS1118.h #ifndef __ADS1118_H #define __ADS1118_H #include "sys.h" #include "delay.h" //????IO?? #define SCLK_L GPIO_ResetBits(GPIOD,GPIO_Pin_0) #define SCLK_H GPIO_SetBits(GPIOD,GPIO_Pin_0) #define CS_L GPIO_ResetBits(GPIOD,GPIO_Pin_1) #define CS_H GPIO_SetBits(GPIOD,GPIO_Pin_1) #define DIN_L GPIO_ResetBits(GPIOD,GPIO_Pin_2) #define DIN_H GPIO_SetBits(GPIOD,GPIO_Pin_2) #define DOUT GPIO_ReadInputDataBit(GPIOD,GPIO_Pin_3)//????ADS???? void ADS1118Init(void );//ADS?????????? u16 Write_ADS1118(u16 config);//AD×????? #endif [/mw_shl_code]

正点原子

慢慢调试，呵呵