參數(shù)資料
型號(hào): USING
英文描述: Using the Expanded Memory Mode with the M16C/62
中文描述: 使用帶有擴(kuò)展內(nèi)存雙隨機(jī)PWM模式
文件頁(yè)數(shù): 9/14頁(yè)
文件大小: 831K
代理商: USING
M16C/62
/* Global variables */
unsigned int mem_start = 0x8000; /* declare expanded memory start address */
unsigned char *mem_ptr;
unsigned int *word_ptr;
unsigned char ad_on = 0;
unsigned int sample_cnt = 0;
union word_define {
struct{
char
low;
char
high;
}byte;
unsigned int word;
} memory;
/* String Messages */
const char msg_text1[] = "Expanded Memory";
const char msg_text2[] = "Demo Program";
const char msg_ad[] = "A/D Value";
const char msg_avg[] = "A/D Average";
/*****************************************************************************
Name: Main
Parameters:
Returns:
Description: This is the main program
*****************************************************************************/
void main() {
int temp;
unsigned int delay;
unsigned char ad_data;
mem_ptr = (unsigned char *) mem_start;
/* Initialize Ports */
pd7 = 0xFF;
/* Configure port 7 as all outputs */
p7 |= 0x80;
/* Initialize port7_4 to 7_7, LEDs off */
pd8 = 0x02;
/* port 8_1 output */
p8_1 = 0;
/* Initialize p8_1 (LCD RS) */
pd10 = 0;
/* A/D input */
/* Use A/D for reading pot. value */
adcon0 = 0x00;
/* AN0 ,one shot mode,software trigger,freq /4*/
adcon1 = 0x20;
/* Set up 8 bit conversion & Vref connected
adcon2 = 0x01;
/* Set up sample and hold */
Using the Expanded Memory Mode with the M16C/62
/* declare memory pointer */
/* declare word memory pointer */
/* A/D sampling flag */
/* sample counter */
/* define word structure */
/* low 8 bit */
/* high 8 bit */
/* LCD messages */
*/
AN-DECE-MCU-18-A
September 2001
8
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