#include?“bus_ctrl.h“

void?bus_fpga_init（）		//總線初始化
{
	RCC->APB2ENR|=1<<3;?		//PORTB時鐘
	RCC->APB2ENR|=1<<4;?		//PORTC時鐘
	
	//配置讀寫線，wr=1為寫
	GPIOC->CRH&=0XFF00FFFF;
	GPIOC->CRH|=0X00330000;
	BUSWR=0;		//兩側為輸入，防止碰撞
	BUSRD=0;
	
	GPIOB->CRL=0X88888888;
	GPIOB->CRH=0X88888888;			//
	
		//配置地址線12bit
	GPIOC->CRL&=0X00000000;			//PORTC0-11out
	GPIOC->CRL|=0X33333333;
	GPIOC->CRH&=0XFFFFF000;			
	GPIOC->CRH|=0X00000333;			//
	//配置數據線，初始化為輸入12bit
}

void?write_to_fpga（u16?addru16?data）
{
	BUSRD=0;
	BUSWR=0;		//MCU輸出，FPGA輸入
	GPIOC->ODR=GPIOC->ODR&0xcfff;			//same?as?up
	GPIOB->CRL=0x33333333;		//數據輸出
	GPIOB->CRH=0x33333333;
	
	GPIOB->ODR=data;		//寫數據
	GPIOC->ODR=（GPIOC->ODR&0xf800）|addr;		//寫地址	
	BUSWR=1;
}

u16?read_from_fpga（u16?addr）
{
	u8?i;
	u16?data;
	BUSWR=0;
	GPIOB->CRL=0x88888888;		//數據輸入
	GPIOB->CRH=0x88888888;	
//	BUSRD=1;
		
	GPIOC->ODR=（GPIOC->ODR&0xf800）|addr;
	BUSRD=1;
	i++;
	i++;
	i++;
	i++;
	i++;
	i++;
	data=GPIOB->IDR;
	BUSRD=0;
	return?data;	
}

?屬性????????????大小?????日期????時間???名稱
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?????目錄???????????0??2016-06-02?14:36??數字示波器\
?????目錄???????????0??2016-06-02?14:36??數字示波器\PCB\
?????文件??????911872??2016-02-10?20:06??數字示波器\PCB\AD.PcbDoc
?????目錄???????????0??2016-06-02?14:36??數字示波器\PCB\__Previews\
?????文件???????41349??2016-02-10?20:07??數字示波器\PCB\__Previews\AD.PcbDocPreview
?????文件???????32460??2016-02-10?20:06??數字示波器\PCB\__Previews\前置隔離和放大.PcbDocPreview
?????文件??????127752??2016-02-10?20:22??數字示波器\PCB\__Previews\數字示波器.SchDocPreview
?????文件???????40659??2016-02-10?20:06??數字示波器\PCB\__Previews\采樣保持放大器.PcbDocPreview
?????文件???????18940??2016-02-10?20:07??數字示波器\PCB\__Previews\高速比較器.PcbDocPreview
?????文件???????23484??2016-02-10?20:22??數字示波器\PCB\__Previews\高速比較器.SchDocPreview
?????文件??????841728??2016-02-10?20:06??數字示波器\PCB\前置隔離和放大.PcbDoc
?????文件???????47046??2016-02-10?20:25??數字示波器\PCB\數字示波器.PrjPCB
?????文件??????????52??2016-02-10?20:22??數字示波器\PCB\數字示波器.PrjPCBStructure
?????文件??????574464??2015-07-28?20:29??數字示波器\PCB\數字示波器.SchDoc
?????文件??????806912??2016-02-10?20:06??數字示波器\PCB\采樣保持放大器.PcbDoc
?????文件??????792064??2016-02-10?20:07??數字示波器\PCB\高速比較器.PcbDoc
?????文件???????52736??2015-07-19?17:14??數字示波器\PCB\高速比較器.SchDoc
?????目錄???????????0??2016-06-02?14:35??數字示波器\oscillator_fpga\
?????目錄???????????0??2016-06-02?11:33??數字示波器\oscillator_fpga\IP\
?????目錄???????????0??2016-06-02?11:33??數字示波器\oscillator_fpga\IP\DPRAM\
?????文件?????????438??2015-07-23?11:26??數字示波器\oscillator_fpga\IP\DPRAM\dpram.qip
?????文件????????9327??2015-07-23?11:26??數字示波器\oscillator_fpga\IP\DPRAM\dpram.v
?????文件????????7661??2015-07-23?11:26??數字示波器\oscillator_fpga\IP\DPRAM\dpram_bb.v
?????文件?????????172??2015-07-23?11:26??數字示波器\oscillator_fpga\IP\DPRAM\dpram_inst.v
?????目錄???????????0??2016-06-02?11:33??數字示波器\oscillator_fpga\IP\PLL\
?????文件?????????353??2015-07-27?09:58??數字示波器\oscillator_fpga\IP\PLL\pll.ppf
?????文件?????????509??2015-07-27?09:58??數字示波器\oscillator_fpga\IP\PLL\pll.qip
?????文件???????14652??2015-07-27?09:58??數字示波器\oscillator_fpga\IP\PLL\pll.v
?????文件???????10868??2015-07-27?09:58??數字示波器\oscillator_fpga\IP\PLL\pll_bb.v
?????文件??????????64??2015-07-27?09:58??數字示波器\oscillator_fpga\IP\PLL\pll_inst.v
?????目錄???????????0??2016-06-02?14:32??數字示波器\oscillator_fpga\Logic\
............此處省略332個文件信息