CC2530 ADC Experiment 1 (read the on-chip temperature and display via the serial port)

/*****************************************//by Unreal Code//name: Read the on-chip temperature and through the serial port Display//Description: Take on-chip temperature sensor for the ad source, through the serial port on the PC display. Experiment using UART0, baud rate is 19200 *****************************************//* Reference ******************************************* */#include <iocc2530.h> #include <stdio.h>/* macro definition *****************************************/#define Uchar unsigned char #define UINT unsigned int #define INT16 short #define UINT16 unsigned      / * Function definition *******************************///Initialize clock void Initclock (void) {  Clkconcmd &=0xbf;//system clock Source select 32MHZ Xosc & nbsp Clkconcmd &=0xf8;//system clock frequency is 32MHZ     Clkconcmd |=0x28;   Clkconcmd &=0xef;//Timing clock frequency 1MHZ   while (Clkconsta & 0X40)//Wait for clock stabilization}//Initialize serial port 0 function void inituart0 (void) {   PERCFG &=0xfe;//USART0 alt 1   P0sel |=0x3c;//p0 ports 2, 3, 4, 5 do peripherals   P2DIR &=0x3f;//p0 Peripheral priority USART0 Max & nbsp U0CSR |=0x80;//USART0 working mode for UART   U0GCR |=9;   U0baud |=59;//set baud rate, theoretically should be 19200, debug serial port is set to 9600, oddBlame.   UTX0IF=0;//UART0 TX Interrupt Flag bit clear 0   U0CSR |=0x40;//usart0 receive enable   IEN0 |=0x04;//usart0 receive interrupt enable   IEN0 |=0x80; Total interrupt Enable}//serial port to send string function void uarttx_send_string (char *data,int len) {  int J;   for (j=0;j<len;j++)   {&N bsp;   u0dbuf=*data++;     while (utx0if==0);     utx0if=0;  }   u0dbuf=0x0a;//line break   while (utx0if==0);   utx0if=0; }//delay function void delay (uint N) {  UINT I;   for (i=0;i<n;i++),   for (i=0;i<n;i++) ;   for (i=0;i<n;i++);   for (i=0;i<n;i++);   for (i=0;i<n;i++); }//Read temperature sensor ad value function uint Gettemperature (void) {  UINT I;   uint16 adcvalue;   uint16 value;     ADC value=0;   for (i=0;i<4;i++)   {    ADCCON3 |=0x0e;//single-channel ad conversion source for temperature sensor-see manual     ADCCON3 &=0x3f;//single-channel AD conversion reference voltage 1.25 internal voltage     ADCCON3 |=0x30;//Single-channel ad conversion resolution is 512dec,12 effective     ADCCON1 |=0X30;//ADC Start Mode selectionStart conversion            for adccon1.st=1 events     ADCCON1 |=0X40;//ADC   while (! ADCCON1&AMP;0X80);//wait for ad conversion to complete     value =  ADCL >> 2; ADCL Register low 2-bit invalid     value |= (((uint16) adch) <<6);//Connect ADCH and ADCL and assign values to value     Adcvalue +=value;//adcvalue is assigned the sum of 4 ad values  }   value=adcvalue>>2;//summation divided by 4 to get the mean   return ((value) >> 4