📄 main.c
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// Search the URL for field-name = "format" and copy field-value to <msg_buff>
field_name_found = mn_http_find_value(BODYptr,(byte *)"format",msg_buff);
// Check if the requested format is HTML
if(field_name_found && toupper(msg_buff[0]) == 'H')
{
// User has requested light sensor data in HTML format
// Build the following page:
// <html>
// <head><meta http-equiv="refresh" content="2"></head>
// <body bgcolor="#757575" text="#505050">
// <b>50%</b>
// </body>
// </html>
//
//
EA = 0;
high=g_Voltage/1000;
low = g_Voltage-high*1000;
sprintf(HTML_BUFFER, "<html><head></head><body bgcolor=black text=yellow><center><span style=\"font-family: sans-serif; font-size: 28pt; font-weight: bold;\">%u.%03d</span></center></body></html>",
high,low );
EA = 1;
socket_ptr->send_ptr = (byte *)HTML_BUFFER;
socket_ptr->send_len = strlen(HTML_BUFFER);
}
}
}
}
}
//-----------------------------------------------------------------------------
// CGI程序
// 控制LED状态
//
//-----------------------------------------------------------------------------
void set_led(PSOCKET_INFO socket_ptr)
{
static byte msg_buff1[52];
int status1;
// Search for the “type” field and store the
// result in <msg_buff1>.
status1 = mn_http_find_value (BODYptr,(byte*)"led", msg_buff1);
// Check status1 and status2 to determine if
// msg_buff1 and msg_buff2 are valid.
if(status1)
{
if(strcmp(msg_buff1,"0")==0)
{
P_LED2 = 1;
strcpy(msg_ans,"LED ON");
}
else if(strcmp(msg_buff1,"1")==0)
{
P_LED2 = 0;
strcpy(msg_ans,"LED OFF");
}
else
{
strcpy(msg_ans,"Error");
}
}
// Write the HTML code to a buffer.
sprintf( HTML_BUFFER,"<HTML>%s</HTML>",msg_ans);
// Fill the socket with data to send.
socket_ptr->send_ptr = HTML_BUFFER;
socket_ptr->send_len = strlen(HTML_BUFFER);
// Return from the CGI script
return;
}
//-----------------------------------------------------------------------------// Initialization Routines//-----------------------------------------------------------------------------//-----------------------------------------------------------------------------// PORT_Init//-----------------------------------------------------------------------------//// Configure the Interrupts, Crossbar and GPIO ports
//
void PORT_Init()
{
// P0.0 - TX0 (UART0), Open-Drain, Digital
// P0.1 - RX0 (UART0), Open-Drain, Digital
// P0.2 - SCK (SPI0), Open-Drain, Digital
// P0.3 - MISO (SPI0), Open-Drain, Digital
// P0.4 - MOSI (SPI0), Open-Drain, Digital
// P0.5 - NSS (SPI0), Open-Drain, Digital
// P0.6 - SDA (SMBus), Open-Drain, Digital
// P0.7 - SCL (SMBus), Open-Drain, Digital
// P1.0 - Skipped, Open-Drain, Analog
// P1.1 - Skipped, Open-Drain, Analog
// P1.2 - Skipped, Open-Drain, Analog
// P1.3 - Skipped, Open-Drain, Analog
// P1.4 - Skipped, Open-Drain, Analog
// P1.5 - Skipped, Open-Drain, Analog
// P1.6 - Skipped, Open-Drain, Analog
// P1.7 - Skipped, Open-Drain, Analog
// P2.0 - TX1 (UART1), Open-Drain, Digital
// P2.1 - RX1 (UART1), Open-Drain, Digital
// P2.2 - INT0 (Tmr0), Open-Drain, Digital
// P2.3 - Unassigned, Open-Drain, Digital
// P2.4 - Unassigned, Open-Drain, Digital
// P2.5 - Unassigned, Open-Drain, Digital
// P2.6 - Unassigned, Open-Drain, Digital
// P2.7 - Unassigned, Open-Drain, Digital
// P3.0 - Unassigned, Open-Drain, Digital
// P3.1 - Unassigned, Open-Drain, Digital
// P3.2 - Unassigned, Open-Drain, Digital
// P3.3 - Unassigned, Open-Drain, Digital
// P3.4 - Unassigned, Open-Drain, Digital
// P3.5 - Unassigned, Open-Drain, Digital
// P3.6 - Unassigned, Push-Pull, Digital
// P3.7 - Unassigned, Push-Pull, Digital
P1MDIN = 0x00;
P2MDOUT = 0x00;
P3MDOUT = 0x02;
P74OUT = 0xFF;
P4 = 0xC0; // /WR, /RD, are high, RESET is low P5 = 0xFF; P6 = 0x3F; // P5, P6 contain the address lines P7 = 0xFF; // P7 contains the data lines
TCON &= ~0x01; // Make /INT0 level triggered
// Enable UART0,SPI0,SMBUS0,UART1,P1 as Analog Pin,SO INT0 on P22
XBR0 = 0x07;
XBR1 = 0x04;
XBR2 = 0x44;
}
//-----------------------------------------------------------------------------// EMIF_Init//-----------------------------------------------------------------------------//// Configure the External Memory Interface for both on and off-chip access.//void EMIF_Init (void){ EMI0CF = 0x2B; // Split-mode, multiplexed on P6 - P7 EMI0TC = EMIF_TIMING; // This constant may be modified // according to SYSCLK to meet the // timing requirements for the CP2200 EMI0CN = BASE_ADDRESS; // Page of XRAM accessed by EMIF}//-----------------------------------------------------------------------------// SYSCLK_Init//-----------------------------------------------------------------------------//// This routine initializes the system clock.//void SYSCLK_Init (void){ int i = 0;
OSCXCN = 0x67;
for (i=0; i < 3000; i++); // Wait at least 1ms
while(!(OSCXCN & 0x80));
OSCICN = 0x08;
}//--------------------------------
// AD初始化
//-------------------------------
void ADC_Init()
{
AMX0CF = 0; // 单端输入
AMX0SL = 0;
ADC0CF = 0xF8;
ADC0CN = 0xC0;
}
void Voltage_Reference_Init()
{
REF0CN = 0x07;
}
//------------------------------
// DA初始化
//------------------------------
void DAC_Init()
{
DAC0CN = 0x80; // 使能DAC0,输出数据右对齐
}
//-----------------------------------------------
// 定时器初始化
//-----------------------------------------------
void Timer_Init()
{
//.......................................
// 设置定时器的时钟信号
// - T4M T2M T1M T0M - - -
// 0 1 0 1 0 0 0 0
// 1:使用SYSCLK；0:使用SYSCLK/12
// 定时器0，1，2，4均使用SYSCLK
//.......................................
CKCON = 0x70;
//......................................
// 定时0工作在16位定时器模式
// 定时器1工作在8位重载模式
//......................................
TMOD = 0x21;
//....................................
// T0作为系统节拍时钟
// 定时计算方法= 65536-t*SYSCLK
//.....................................
//TH0 = TMR0H;
//TL0 = TMR0L;
PCON = 0;
//.......................................
// T1作为串口0时钟
// 串口0波特率＝SYSCLK/32*(256-TMR1LOAD)
// T1波特率=9600
//.......................................
TH1 = 0xB8;
TL1 = 0xB8;
TCON = 0x00;
//..................................................
// T2 and T3 not used
//..................................................
RCAP2H = 0x00; // Timer 2 Capture Register High Byte
RCAP2L = 0x00; // Timer 2 Capture Register Low Byte
TH2 = 0x00; // Timer 2 High Byte
TL2 = 0x00; // Timer 2 Low Byte
T2CON = 0x00; // Timer 2 Control Register
TMR3RLL = 0x00; // Timer 3 Reload Register Low Byte
TMR3RLH = 0x00; // Timer 3 Reload Register High Byte
TMR3H = 0x00; // Timer 3 High Byte
TMR3L = 0x00; // Timer 3 Low Byte
TMR3CN = 0x00; // Timer 3 Control Register
//.....................................................
// T4 作为串口1波特率发生器
// T4波特率=SYSCLK/32*(65536-RCAP4H:RCAP4L)
// T4波特率=9600
//.....................................................
RCAP4H = 0xFF; // Timer 4 Capture Register High Byte
RCAP4L = 0xB8; // Timer 4 Capture Register Low Byte
TH4 = 0xFF; // Timer 4 High Byte
TL4 = 0xB8; // Timer 4 Low Byte
T4CON = 0x30; // Timer 4 Control Register
}
//...........................................................
// 功能：UART0初始化
// 输入参数：无
// 输出参数：无
// 注意：1.应该首先使用交叉开关为UART0分配相应的引脚
// 2.初始化定时器1作为波特率发生器
//..........................................................
void UART0_Init()
{
SCON0 = 0x50; // 8位波特率异步通信模式
REN0 = 1; // 使能UART0接收
TR1 = 1; // 启动定时器1
}
//-----------------------------------------------------
// 函数功能：循环方式发送字符串
// 输出参数：pSendString,char*:欲发送的字符串的缓冲区
// 输出：无
//-----------------------------------------------------
void SendString(char *pSendString)
{
// 循环发送，首先关闭中断
ES0 =0;
while(*pSendString!=0)
{
SBUF0 = *pSendString++;
while(TI0==0);
TI0=0;
}
}
//-----------------------------
// 初始化变量
//----------------------------
void InitVariable()
{
g_Voltage = 0;
g_Temperature = 0;
g_ADChannel = AD_VOLTAGE;
}
//------------------------------
// 以循环的方式进行一次电压采集
// g_Voltage是实际电压的1000倍
//-----------------------------
unsigned long SampleVoltageAndOut()
{
unsigned long lt;
unsigned int nRet;
unsigned char Save;
Save = EIE2;
EIE2&=~0x02;
AMX0SL = 0; // 采集通道0
AD0INT = 0;
AD0BUSY = 1;
while(AD0INT==0);
AD0INT = 0;
EIE2 = Save;
// DA输出
DAC0L = ADC0L;
DAC0H = ADC0H;
nRet = ADC0H;
nRet<<=8;
nRet+=ADC0L;
lt = nRet+1;
lt =lt*AD_VREF;
lt >>=12;
g_Voltage = lt;
return g_Voltage;
}
//------------------------------
// 测量温度
// Vtemp=0.00286*Temp+0.776
// g_Temperature/2.86=实际温度
//-----------------------------
long SampleTemperature()
{
unsigned int nRet;
unsigned long lt;
unsigned char Save;
Save = EIE2;
EIE2&=~0x02;
AMX0SL = 8; // 采集通道8
AD0INT = 0;
AD0BUSY = 1;
while(AD0INT==0);
AD0INT = 0;
EIE2 = Save;
// 计算实际的温度
nRet = ADC0H<<8;
nRet+=ADC0L;
lt =nRet+1;
lt =lt*AD_VREF;
lt >>=12;
// 1000V
g_Temperature=lt-776;
return g_Temperature;
}
//---------------------------------------------------------
// 软件延时函数
//---------------------------------------------------------
// ;时钟周期数
// lcall ;4
void dly(unsigned char cnt){while(cnt){cnt--;}} // delay: mov a,r7 ;1
// jz quit ;2
// dec r7 ;1
// sjmp delay ;2
// quit: ret ;1
// 6n+5 sysclk @c8051f022(0.5425)
// 延时(6n+5)*0.0904us @11.0592MHZ
//....................................................................................
// 延时ms毫秒
//....................................................................................
void Dlyms(unsigned int ms) // 延时cnt(ms)@11.0592MHZ
{
while(ms)
{
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
dly(250);
dly(210);
ms--;
}
}
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