C8051F020 AD转换和USB通信

config.c

#include "include.h"

// Peripheral specific initialization functions,
// Called from the Init_Device() function

void Timer0_Init (void)
{
TMOD= 0x01;
TH0= TH0_VALUE;
TL0= TL0_VALUE;

}

void ADC_Init()
{
AMX1SL= 0x00;//
ADC1CF= 0x21;//
ADC1CN= 0x80;//
REF0CN= 0x03;
}

//-------------------------------------------------------------------------------

void PORT_Reset(void)
{
// disable watchdog timer
// disable watchdog timer
WDTCN = 0xde;
WDTCN = 0xad;

//P0MDOUT|=0x10;
XBR0 = 0x04;// CP0EECI0EPCA0ME PCA0ME PCA0ME [UART0]SPI0EN [SMB0EN]

XBR1 = 0x14;// SYSCKET2EXET2EINT1ET1E[INT0E]T0ECP1E

XBR2 = 0x40;// WEAKPUD [XBARE] -T4EXET4E[UART1E] EMIFLE CNVSTE

P0MDOUT|=0x0;
P1MDIN=0x0;//Digital Input Mode
//P1MDOUT=0x0f;//Key Input Drain-out
//P1=0xff;//Key Input

//P2MDOUT=0x00;//CH372 WR RD CS A0 Output
P2MDOUT=0xff;
//P2=0xff;
P2=0xff;

P3MDOUT=0x00;//input
P3=0xff;

P74OUT=0;//P7 CH372 data
P7=0xff;
}//Port_Reset(void)

void SysClk_Reset (void)
{
uint i;// delay counter

//OSCICN = 0x87;//片内晶振

WDTCN = 0xde;// disable watchdog timer
WDTCN = 0xad;

OSCXCN = 0x67;// start external oscillator with
// 11.0592MHz crystal

for (i=0; i <=255; i++) ;// XTLVLD blanking interval (>1ms)

while (!(OSCXCN & 0x80)) ;// Wait for crystal osc. to settle

OSCICN = 0x88;// select external oscillator as SYSCLK
// source and enable missing clock
// detector
}//void SysClk_Reset (void)

void Interrupts_Init()
{
//EIE1= 0x08;//AD0中断
//IT01CF= 0x00;//P00为外部中断0 低电平有效
IE= 0x00;//PS0 T0 enable
EIE2= 0x08;//ADC1 enable
EIP2= 0x08;//ADC1 high class
IT0= 1;//INT0 下降沿中断
IT1= 1;
}

// Initialization function for device,
// Call Init_Device() from your main program
void init_var()
{

Flag8=0;
bfirst=0;
//cnt_send=0;
measurements=0;
sample_mode=0;
send_interval=1;
}

void Uart_Reset(void)
{
//串口0
SCON0=0x50;//[sm00 sm10] sm20 [ren0] tb80 rb80 ti0 ri0

//T2 for 波特率

//baud=SYSCLK/(32*(65536-(RCAP2H:RCAP2L)))
//4800: 0xffd8
// [ 9600: 0xffdc ]
//19200:0xffee
TH2=0xff;
TL2=0xb8;
RCAP2H=0xff;
RCAP2L=0xb8;
//TH2=0xff;
//TL2=0xdc;
//RCAP2H=0xff;
//RCAP2L=0xdc;
T2CON=0x34;//TF2 EXF2 [RCLK0] [TCLK0] EXEN2 [TR2] C/T2 CP/RL2
ClearCommSendBuffer();


}//void Uart_Reset(void);

void Init_Device(void)
{
SysClk_Reset();
PORT_Reset();
Timer0_Init();
ADC_Init();
Uart_Reset();
Interrupts_Init();
//init_var();
}

ch372.c

// ------------------------------------------------------------------------------------------------------

#include

#define ERR_SUCCESS0x00// 操作成功
#define ERR_PARAMETER0x10// 参数错误
#define ERR_UNSUPPORT0x80// 命令不支持
#define ERR_UNDEFINED0xFF// 未定义的错误

//#define THIS_FIRMWARE_VER0x10// 固件版本号
//#define THIS_APP_SYS_VER0x10// 应用系统版本号
//#define THIS_APP_SYS_STR"RA50"// 应用系统描述字符串

#define OP_CMD1// 命令操作码
#define OP_DATA0// 数据操作码
#define DELAY_TIMES2// 延时2微秒
#define DELAY_CNT_NUMS16*DELAY_TIMES// 延时2微秒所需的时钟周期数（对于22.1184MHz晶振，每个微秒包含22.1184个时钟周期）
//#define MY_USB_VENDOR_ID0x4348// USB设备制造商标识
//#define MY_USB_PRODUCT_ID0x5537// USB设备产品标识

sbitUSB_CS=P2^4;
sbitUSB_INT=P3^0;
sbitUSB_A0=P2^3;
sbitUSB_WR=P2^1;
sbitUSB_RD=P2^2;
sfrUSB_DATA=0x96;
//#define get_usb P7
//#define set_usb(dat1) P7=dat1