Yuji Notsu
トランジスタ技術2014年2月号に付属のI2C実験基板を黄mbed(LPC11U24)で動かしてみました。
Diff: main.cpp
- Revision:
- 0:3a0493cd3408
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Jan 13 12:34:19 2014 +0000
@@ -0,0 +1,278 @@
+#include "mbed.h"
+#include "ADT7410.h"
+#include "LPS331.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#define AQM0802_ADDR 0x7c
+#define CMD 0x00
+#define DAT 0x40
+
+DigitalOut myled(LED1);
+DigitalOut myled2(p29);
+I2C i2c(p28, p27);
+
+void LocateLCD(int x, int y)
+{
+
+ // 8x2
+ char cmd[2];
+ cmd[0]=CMD;
+ cmd[1]=0x80 + y*0x40 + x;
+ i2c.write(AQM0802_ADDR,cmd,2);
+
+}
+
+void PutsLCD(char *buffer)
+{
+
+ while(*buffer != '\0')
+ {
+ char cmd[2];
+ cmd[0]=DAT;
+ cmd[1]=*buffer;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ buffer++;
+ }
+
+}
+
+
+int main() {
+
+ char msg[10];
+ int temp;
+ int l;
+ long press;
+ char cmd[2];
+ char recv[10];
+
+ // set 16bit resolution of ADT7410
+
+ cmd[0] = ADT7410_CONFIG;
+ cmd[1] = 0xC0;
+ i2c.write(ADT7410_ADDR,cmd,2);
+
+ // Power ON Cycle=1Hz of LPS331
+ cmd[0]=LPS331_CTRL_REG1;
+ cmd[1]=0x90;
+ i2c.write(LPS331_ADDR,cmd,2);
+
+ //init LCD
+ // Wait 40ms
+ wait_ms(40);
+ // Function set = 0x38
+ cmd[0]=CMD;
+ cmd[1]=0x38;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Function set = 0x39
+ cmd[0]=CMD;
+ cmd[1]=0x39;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Internal OSC frequency = 0x14
+ cmd[0]=CMD;
+ cmd[1]=0x14;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Contrast set = 0x70
+ cmd[0]=CMD;
+ cmd[1]=0x70;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Power/ICON/Contrast control = 0x56
+ cmd[0]=CMD;
+ cmd[1]=0x56;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Follower control = 0x6C
+ cmd[0]=CMD;
+ cmd[1]=0x6C;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 200ms
+ wait_ms(200);
+ // Function set = 0x38
+ cmd[1]=0x38;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Display ON/OFF control = 0x0C
+ cmd[1]=0x0C;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 26.3us
+ wait_us(26.3);
+ // Clear Display = 0x01
+ cmd[1]=0x01;
+ i2c.write( AQM0802_ADDR,cmd,1);
+ // Wait 1.08ms
+ wait_ms(1.08);
+
+#define PCF8591_ADDR 0x92
+#define M24LC64_ADDR 0xA0
+#define EEPROM
+#define ADC
+#define TEMP
+#define BAR
+
+ while(1)
+ {
+
+
+#ifdef EEPROM
+
+ // Clear Display = 0x01
+ cmd[0]=CMD;
+ cmd[1]=0x01;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 2ms
+ wait_ms(2);
+ // EEPROM 0x0002=0x5A
+ char EEPROM_CMD[3];
+ EEPROM_CMD[0]=0x00;
+ EEPROM_CMD[1]=0x02;
+ EEPROM_CMD[2]=0x5A;
+ i2c.write(M24LC64_ADDR,EEPROM_CMD,3);
+ wait_us(131.5);
+
+ //for(l=0;l<0x1FFF;l++){
+ for(l=0;l<0x10;l++){
+ // EEPROM for 24LC64
+ EEPROM_CMD[0]=l>>8;
+ EEPROM_CMD[1]=l&0xFF;
+ i2c.write(M24LC64_ADDR,EEPROM_CMD,2);
+ i2c.read(M24LC64_ADDR,EEPROM_CMD,1);
+ temp=EEPROM_CMD[0];
+ LocateLCD(0,0);
+ PutsLCD("ADR=");
+ //itoa(l,msg,16);
+ sprintf(msg,"%x",l);
+ PutsLCD(msg);
+ LocateLCD(0,1);
+ PutsLCD("DAT=");
+ //itoa(temp,msg,16);
+ sprintf(msg,"%x",temp);
+ PutsLCD(msg);
+ PutsLCD(" ");
+ myled2=1;
+ wait_ms(100);
+ myled2=0;
+ wait_ms(1000);
+ }
+#endif
+
+
+#ifdef ADC
+ // Clear Display = 0x01
+ cmd[0]=CMD;
+ cmd[1]=0x01;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 2ms
+ wait_ms(2);
+ // A/D for PCF8591
+ //GetI2C(0x40, PCF8591_ADDR); // ch0 with D/A enable
+ cmd[0]=0x40;
+ i2c.write(PCF8591_ADDR,cmd,1);
+ i2c.read(PCF8591_ADDR,cmd,1);
+// GetI2C(0x01, PCF8591_ADDR); // ch1
+// GetI2C(0x02, PCF8591_ADDR); // ch2
+// GetI2C(0x03, PCF8591_ADDR); // ch3
+ temp=cmd[0];
+ //itoa(temp,msg,10);
+ sprintf(msg,"%d",temp);
+ LocateLCD(0,0);
+ PutsLCD("A/D=");
+ PutsLCD(msg);
+ PutsLCD(" ");
+ myled2=1;
+ // D/A for PCF8591
+ //PutI2C(0x40, temp, PCF8591_ADDR);
+ cmd[0]=0x40;
+ cmd[1]=temp;
+ i2c.write(PCF8591_ADDR,cmd,2);
+ wait_ms(1000);
+ myled2=0;
+ wait_ms(1000);
+#endif
+
+#ifdef TEMP
+ // Temperature
+ // RDY?
+ // Clear Display = 0x01
+ cmd[0]=CMD;
+ cmd[1]=0x01;
+ i2c.write(AQM0802_ADDR,cmd,2);
+ // Wait 2ms
+ wait_ms(2);
+ do{
+ //GetI2C(ADT7410_STATUS, ADT7410_ADDR);
+
+ cmd[0]=ADT7410_STATUS;
+
+ i2c.write(ADT7410_ADDR, cmd,1);
+ i2c.read(ADT7410_ADDR, recv,1);
+ temp=recv[0];
+ }while(temp & 0x80);
+
+ // get temp_high
+ cmd[0]=ADT7410_TEMP_H;
+ i2c.write(ADT7410_ADDR,cmd,1);
+ i2c.read(ADT7410_ADDR,recv,1);
+ temp=recv[0]*0x100;
+ // get temp_low
+ cmd[0]=ADT7410_TEMP_L;
+ i2c.write(ADT7410_ADDR,cmd,1);
+ i2c.read(ADT7410_ADDR,recv,1);
+ temp+=recv[0];
+// temp/=128; // for C
+ temp/=13;
+ //itoa(temp,msg,10);
+ sprintf(msg,"%d",temp);
+ l=strlen(msg);
+ msg[l]=msg[l-1];
+ msg[l-1]='.';
+ msg[l+1]=0;
+ LocateLCD(0,0);
+ PutsLCD(msg);
+ PutsLCD("C ");
+ myled2=1;
+ wait_ms(1000);
+#endif
+
+#ifdef BAR
+ // Barometer
+ // get press_high
+ cmd[0]=LPS331_PRESS_OUT_H;
+ i2c.write(LPS331_ADDR,cmd,1);
+ i2c.read(LPS331_ADDR,recv,1);
+ press=recv[0]*0x10000;
+ // get tpress_low
+ cmd[0]=LPS331_PRESS_OUT_L;
+ i2c.write(LPS331_ADDR,cmd,1);
+ i2c.read(LPS331_ADDR,recv,1);
+ press+=recv[0]*0x100;
+ // get press_xl
+ cmd[0]=LPS331_PRESS_POUT_XL_REH;
+ i2c.write(LPS331_ADDR,cmd,1);
+ i2c.read(LPS331_ADDR,recv,1);
+ press+=recv[0];
+// press/=4096; // for hPa
+ press/=41;
+ //itoa(press,msg,10);
+ sprintf(msg,"%d",press);
+ LocateLCD(0,1);
+ PutsLCD(msg);
+ PutsLCD("Pa ");
+ myled2=0;
+ wait_ms(1000);
+#endif
+
+ }
+
+}
+