网站怎么做301定向,最近网站改版文章突然不收录,医学院英文网站建设方案,做团购网站视频一、TLV65618芯片
TLV5618A 带掉电功能 2.7V-5.5V#xff0c;低功耗双路 12 位数模转换器
特点 ●双路 12 位电压输出 DAC ●可编程调节转换时间 - 快速模式 3μs - 低速模式 10μs ●兼容 TMS320 和 SPI 串行接口 16位串行接口包含4位控制和12位数据。 二、驱动代码
采用模…一、TLV65618芯片
TLV5618A 带掉电功能 2.7V-5.5V低功耗双路 12 位数模转换器
特点 ●双路 12 位电压输出 DAC ●可编程调节转换时间 - 快速模式 3μs - 低速模式 10μs ●兼容 TMS320 和 SPI 串行接口 16位串行接口包含4位控制和12位数据。 二、驱动代码
采用模拟SPI方式实现对TLV5618的控制。
头文件
/** FILE : tlv5618.h* DESCRIPTION : This file is for tlv5618.c* Author : JackWang* --------------------*/
#ifndef __tlv5618_h__
#define __tlv5618_h__#define Channal_A 1
#define Channal_B 2
#define Channal_AB 3//-------------------------- Typedef----------------------------//
typedef struct {int (* initialize)(void);int (* Write_A_B)(unsigned short,unsigned short,unsigned char);
}TLV5618_T;//--------------------------- Extern ---------------------------//
extern TLV5618_T tlv5618;#endif //__tlv5618_h__实现文件
/** FILE : tlv5618.c* DESCRIPTION : This file is tlv5618 driver.* Author : JackWang*/
//--------------------------- Include ---------------------------//
#include tlv5618.h
#include stm32f4xx_gpio.h
#include stm32f4xx_rcc.h//--------------------------- Define ---------------------------//
#define TLV5618_CS_H GPIO_SetBits(GPIOH,GPIO_Pin_10)
#define TLV5618_CS_L GPIO_ResetBits(GPIOH,GPIO_Pin_10)#define TLV5618_DIN_H GPIO_SetBits(GPIOH,GPIO_Pin_8)
#define TLV5618_DIN_L GPIO_ResetBits(GPIOH,GPIO_Pin_8)#define TLV5618_CLK_H GPIO_SetBits(GPIOH,GPIO_Pin_11)
#define TLV5618_CLK_L GPIO_ResetBits(GPIOH,GPIO_Pin_11)//--------------------- Function Prototype ----------------------//
static int initialize(void);
static int Write_A_B(unsigned short,unsigned short,unsigned char);
static int EX_DAC_Conver(unsigned short);//--------------------------- Variable --------------------------//
TLV5618_T tlv5618 {.initialize initialize,.Write_A_BWrite_A_B
};/*!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!*/
static int
initialize(void)
{GPIO_InitTypeDef GPIO_uInitStructure;RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOH,ENABLE);GPIO_uInitStructure.GPIO_Pin GPIO_Pin_8 | GPIO_Pin_10 | GPIO_Pin_11; GPIO_uInitStructure.GPIO_Mode GPIO_Mode_OUT; GPIO_uInitStructure.GPIO_OType GPIO_OType_PP; GPIO_uInitStructure.GPIO_PuPd GPIO_PuPd_UP; GPIO_uInitStructure.GPIO_Speed GPIO_Speed_50MHz; GPIO_Init(GPIOH,GPIO_uInitStructure);TLV5618_CS_H ;TLV5618_CLK_L ;TLV5618_DIN_L ;return 0;
}/*!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!*/
static int
EX_DAC_Conver(unsigned short Dignum)
{unsigned short Dig 0;TLV5618_CS_L; TLV5618_CLK_H;for (int idx 0; idx 16; idx) {DigDignum0x8000;if (Dig) { TLV5618_DIN_H; }else { TLV5618_DIN_L; }for (int delayTime 0; delayTime 100; delayTime );//for delay onlyTLV5618_CLK_L;Dignum1;for (int delayTime 0; delayTime 100; delayTime );//for delay onlyTLV5618_CLK_H;}TLV5618_CLK_L;TLV5618_CS_H; for (int delayTime 0; delayTime 1000; delayTime );//for delay onlyreturn 0;
}
/*!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!*/
static int
Write_A_B(unsigned short Data_A, unsigned short Data_B, unsigned char Channal)
{unsigned short Temp0x4000;switch(Channal){case Channal_A: EX_DAC_Conver(Temp|0x8000|(0x0fffData_A));break;case Channal_B: EX_DAC_Conver(Temp|0x0000|(0x0fffData_B));break;case Channal_AB: EX_DAC_Conver(Temp|0x1000|(0x0fffData_B));EX_DAC_Conver(Temp|0x8000|(0x0fffData_A));break;default:break;}return 0;
}
