Yuji Notsu
/
TORAGI_2014_02_I2C
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。
main.cpp@0:3a0493cd3408, 2014-01-13 (annotated)
- Committer:
- y_notsu
- Date:
- Mon Jan 13 12:34:19 2014 +0000
- Revision:
- 0:3a0493cd3408
????????2014?2???????mbed???????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
y_notsu | 0:3a0493cd3408 | 1 | #include "mbed.h" |
y_notsu | 0:3a0493cd3408 | 2 | #include "ADT7410.h" |
y_notsu | 0:3a0493cd3408 | 3 | #include "LPS331.h" |
y_notsu | 0:3a0493cd3408 | 4 | #include <stdio.h> |
y_notsu | 0:3a0493cd3408 | 5 | #include <stdlib.h> |
y_notsu | 0:3a0493cd3408 | 6 | |
y_notsu | 0:3a0493cd3408 | 7 | #define AQM0802_ADDR 0x7c |
y_notsu | 0:3a0493cd3408 | 8 | #define CMD 0x00 |
y_notsu | 0:3a0493cd3408 | 9 | #define DAT 0x40 |
y_notsu | 0:3a0493cd3408 | 10 | |
y_notsu | 0:3a0493cd3408 | 11 | DigitalOut myled(LED1); |
y_notsu | 0:3a0493cd3408 | 12 | DigitalOut myled2(p29); |
y_notsu | 0:3a0493cd3408 | 13 | I2C i2c(p28, p27); |
y_notsu | 0:3a0493cd3408 | 14 | |
y_notsu | 0:3a0493cd3408 | 15 | void LocateLCD(int x, int y) |
y_notsu | 0:3a0493cd3408 | 16 | { |
y_notsu | 0:3a0493cd3408 | 17 | |
y_notsu | 0:3a0493cd3408 | 18 | // 8x2 |
y_notsu | 0:3a0493cd3408 | 19 | char cmd[2]; |
y_notsu | 0:3a0493cd3408 | 20 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 21 | cmd[1]=0x80 + y*0x40 + x; |
y_notsu | 0:3a0493cd3408 | 22 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 23 | |
y_notsu | 0:3a0493cd3408 | 24 | } |
y_notsu | 0:3a0493cd3408 | 25 | |
y_notsu | 0:3a0493cd3408 | 26 | void PutsLCD(char *buffer) |
y_notsu | 0:3a0493cd3408 | 27 | { |
y_notsu | 0:3a0493cd3408 | 28 | |
y_notsu | 0:3a0493cd3408 | 29 | while(*buffer != '\0') |
y_notsu | 0:3a0493cd3408 | 30 | { |
y_notsu | 0:3a0493cd3408 | 31 | char cmd[2]; |
y_notsu | 0:3a0493cd3408 | 32 | cmd[0]=DAT; |
y_notsu | 0:3a0493cd3408 | 33 | cmd[1]=*buffer; |
y_notsu | 0:3a0493cd3408 | 34 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 35 | buffer++; |
y_notsu | 0:3a0493cd3408 | 36 | } |
y_notsu | 0:3a0493cd3408 | 37 | |
y_notsu | 0:3a0493cd3408 | 38 | } |
y_notsu | 0:3a0493cd3408 | 39 | |
y_notsu | 0:3a0493cd3408 | 40 | |
y_notsu | 0:3a0493cd3408 | 41 | int main() { |
y_notsu | 0:3a0493cd3408 | 42 | |
y_notsu | 0:3a0493cd3408 | 43 | char msg[10]; |
y_notsu | 0:3a0493cd3408 | 44 | int temp; |
y_notsu | 0:3a0493cd3408 | 45 | int l; |
y_notsu | 0:3a0493cd3408 | 46 | long press; |
y_notsu | 0:3a0493cd3408 | 47 | char cmd[2]; |
y_notsu | 0:3a0493cd3408 | 48 | char recv[10]; |
y_notsu | 0:3a0493cd3408 | 49 | |
y_notsu | 0:3a0493cd3408 | 50 | // set 16bit resolution of ADT7410 |
y_notsu | 0:3a0493cd3408 | 51 | |
y_notsu | 0:3a0493cd3408 | 52 | cmd[0] = ADT7410_CONFIG; |
y_notsu | 0:3a0493cd3408 | 53 | cmd[1] = 0xC0; |
y_notsu | 0:3a0493cd3408 | 54 | i2c.write(ADT7410_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 55 | |
y_notsu | 0:3a0493cd3408 | 56 | // Power ON Cycle=1Hz of LPS331 |
y_notsu | 0:3a0493cd3408 | 57 | cmd[0]=LPS331_CTRL_REG1; |
y_notsu | 0:3a0493cd3408 | 58 | cmd[1]=0x90; |
y_notsu | 0:3a0493cd3408 | 59 | i2c.write(LPS331_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 60 | |
y_notsu | 0:3a0493cd3408 | 61 | //init LCD |
y_notsu | 0:3a0493cd3408 | 62 | // Wait 40ms |
y_notsu | 0:3a0493cd3408 | 63 | wait_ms(40); |
y_notsu | 0:3a0493cd3408 | 64 | // Function set = 0x38 |
y_notsu | 0:3a0493cd3408 | 65 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 66 | cmd[1]=0x38; |
y_notsu | 0:3a0493cd3408 | 67 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 68 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 69 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 70 | // Function set = 0x39 |
y_notsu | 0:3a0493cd3408 | 71 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 72 | cmd[1]=0x39; |
y_notsu | 0:3a0493cd3408 | 73 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 74 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 75 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 76 | // Internal OSC frequency = 0x14 |
y_notsu | 0:3a0493cd3408 | 77 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 78 | cmd[1]=0x14; |
y_notsu | 0:3a0493cd3408 | 79 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 80 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 81 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 82 | // Contrast set = 0x70 |
y_notsu | 0:3a0493cd3408 | 83 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 84 | cmd[1]=0x70; |
y_notsu | 0:3a0493cd3408 | 85 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 86 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 87 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 88 | // Power/ICON/Contrast control = 0x56 |
y_notsu | 0:3a0493cd3408 | 89 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 90 | cmd[1]=0x56; |
y_notsu | 0:3a0493cd3408 | 91 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 92 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 93 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 94 | // Follower control = 0x6C |
y_notsu | 0:3a0493cd3408 | 95 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 96 | cmd[1]=0x6C; |
y_notsu | 0:3a0493cd3408 | 97 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 98 | // Wait 200ms |
y_notsu | 0:3a0493cd3408 | 99 | wait_ms(200); |
y_notsu | 0:3a0493cd3408 | 100 | // Function set = 0x38 |
y_notsu | 0:3a0493cd3408 | 101 | cmd[1]=0x38; |
y_notsu | 0:3a0493cd3408 | 102 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 103 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 104 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 105 | // Display ON/OFF control = 0x0C |
y_notsu | 0:3a0493cd3408 | 106 | cmd[1]=0x0C; |
y_notsu | 0:3a0493cd3408 | 107 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 108 | // Wait 26.3us |
y_notsu | 0:3a0493cd3408 | 109 | wait_us(26.3); |
y_notsu | 0:3a0493cd3408 | 110 | // Clear Display = 0x01 |
y_notsu | 0:3a0493cd3408 | 111 | cmd[1]=0x01; |
y_notsu | 0:3a0493cd3408 | 112 | i2c.write( AQM0802_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 113 | // Wait 1.08ms |
y_notsu | 0:3a0493cd3408 | 114 | wait_ms(1.08); |
y_notsu | 0:3a0493cd3408 | 115 | |
y_notsu | 0:3a0493cd3408 | 116 | #define PCF8591_ADDR 0x92 |
y_notsu | 0:3a0493cd3408 | 117 | #define M24LC64_ADDR 0xA0 |
y_notsu | 0:3a0493cd3408 | 118 | #define EEPROM |
y_notsu | 0:3a0493cd3408 | 119 | #define ADC |
y_notsu | 0:3a0493cd3408 | 120 | #define TEMP |
y_notsu | 0:3a0493cd3408 | 121 | #define BAR |
y_notsu | 0:3a0493cd3408 | 122 | |
y_notsu | 0:3a0493cd3408 | 123 | while(1) |
y_notsu | 0:3a0493cd3408 | 124 | { |
y_notsu | 0:3a0493cd3408 | 125 | |
y_notsu | 0:3a0493cd3408 | 126 | |
y_notsu | 0:3a0493cd3408 | 127 | #ifdef EEPROM |
y_notsu | 0:3a0493cd3408 | 128 | |
y_notsu | 0:3a0493cd3408 | 129 | // Clear Display = 0x01 |
y_notsu | 0:3a0493cd3408 | 130 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 131 | cmd[1]=0x01; |
y_notsu | 0:3a0493cd3408 | 132 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 133 | // Wait 2ms |
y_notsu | 0:3a0493cd3408 | 134 | wait_ms(2); |
y_notsu | 0:3a0493cd3408 | 135 | // EEPROM 0x0002=0x5A |
y_notsu | 0:3a0493cd3408 | 136 | char EEPROM_CMD[3]; |
y_notsu | 0:3a0493cd3408 | 137 | EEPROM_CMD[0]=0x00; |
y_notsu | 0:3a0493cd3408 | 138 | EEPROM_CMD[1]=0x02; |
y_notsu | 0:3a0493cd3408 | 139 | EEPROM_CMD[2]=0x5A; |
y_notsu | 0:3a0493cd3408 | 140 | i2c.write(M24LC64_ADDR,EEPROM_CMD,3); |
y_notsu | 0:3a0493cd3408 | 141 | wait_us(131.5); |
y_notsu | 0:3a0493cd3408 | 142 | |
y_notsu | 0:3a0493cd3408 | 143 | //for(l=0;l<0x1FFF;l++){ |
y_notsu | 0:3a0493cd3408 | 144 | for(l=0;l<0x10;l++){ |
y_notsu | 0:3a0493cd3408 | 145 | // EEPROM for 24LC64 |
y_notsu | 0:3a0493cd3408 | 146 | EEPROM_CMD[0]=l>>8; |
y_notsu | 0:3a0493cd3408 | 147 | EEPROM_CMD[1]=l&0xFF; |
y_notsu | 0:3a0493cd3408 | 148 | i2c.write(M24LC64_ADDR,EEPROM_CMD,2); |
y_notsu | 0:3a0493cd3408 | 149 | i2c.read(M24LC64_ADDR,EEPROM_CMD,1); |
y_notsu | 0:3a0493cd3408 | 150 | temp=EEPROM_CMD[0]; |
y_notsu | 0:3a0493cd3408 | 151 | LocateLCD(0,0); |
y_notsu | 0:3a0493cd3408 | 152 | PutsLCD("ADR="); |
y_notsu | 0:3a0493cd3408 | 153 | //itoa(l,msg,16); |
y_notsu | 0:3a0493cd3408 | 154 | sprintf(msg,"%x",l); |
y_notsu | 0:3a0493cd3408 | 155 | PutsLCD(msg); |
y_notsu | 0:3a0493cd3408 | 156 | LocateLCD(0,1); |
y_notsu | 0:3a0493cd3408 | 157 | PutsLCD("DAT="); |
y_notsu | 0:3a0493cd3408 | 158 | //itoa(temp,msg,16); |
y_notsu | 0:3a0493cd3408 | 159 | sprintf(msg,"%x",temp); |
y_notsu | 0:3a0493cd3408 | 160 | PutsLCD(msg); |
y_notsu | 0:3a0493cd3408 | 161 | PutsLCD(" "); |
y_notsu | 0:3a0493cd3408 | 162 | myled2=1; |
y_notsu | 0:3a0493cd3408 | 163 | wait_ms(100); |
y_notsu | 0:3a0493cd3408 | 164 | myled2=0; |
y_notsu | 0:3a0493cd3408 | 165 | wait_ms(1000); |
y_notsu | 0:3a0493cd3408 | 166 | } |
y_notsu | 0:3a0493cd3408 | 167 | #endif |
y_notsu | 0:3a0493cd3408 | 168 | |
y_notsu | 0:3a0493cd3408 | 169 | |
y_notsu | 0:3a0493cd3408 | 170 | #ifdef ADC |
y_notsu | 0:3a0493cd3408 | 171 | // Clear Display = 0x01 |
y_notsu | 0:3a0493cd3408 | 172 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 173 | cmd[1]=0x01; |
y_notsu | 0:3a0493cd3408 | 174 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 175 | // Wait 2ms |
y_notsu | 0:3a0493cd3408 | 176 | wait_ms(2); |
y_notsu | 0:3a0493cd3408 | 177 | // A/D for PCF8591 |
y_notsu | 0:3a0493cd3408 | 178 | //GetI2C(0x40, PCF8591_ADDR); // ch0 with D/A enable |
y_notsu | 0:3a0493cd3408 | 179 | cmd[0]=0x40; |
y_notsu | 0:3a0493cd3408 | 180 | i2c.write(PCF8591_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 181 | i2c.read(PCF8591_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 182 | // GetI2C(0x01, PCF8591_ADDR); // ch1 |
y_notsu | 0:3a0493cd3408 | 183 | // GetI2C(0x02, PCF8591_ADDR); // ch2 |
y_notsu | 0:3a0493cd3408 | 184 | // GetI2C(0x03, PCF8591_ADDR); // ch3 |
y_notsu | 0:3a0493cd3408 | 185 | temp=cmd[0]; |
y_notsu | 0:3a0493cd3408 | 186 | //itoa(temp,msg,10); |
y_notsu | 0:3a0493cd3408 | 187 | sprintf(msg,"%d",temp); |
y_notsu | 0:3a0493cd3408 | 188 | LocateLCD(0,0); |
y_notsu | 0:3a0493cd3408 | 189 | PutsLCD("A/D="); |
y_notsu | 0:3a0493cd3408 | 190 | PutsLCD(msg); |
y_notsu | 0:3a0493cd3408 | 191 | PutsLCD(" "); |
y_notsu | 0:3a0493cd3408 | 192 | myled2=1; |
y_notsu | 0:3a0493cd3408 | 193 | // D/A for PCF8591 |
y_notsu | 0:3a0493cd3408 | 194 | //PutI2C(0x40, temp, PCF8591_ADDR); |
y_notsu | 0:3a0493cd3408 | 195 | cmd[0]=0x40; |
y_notsu | 0:3a0493cd3408 | 196 | cmd[1]=temp; |
y_notsu | 0:3a0493cd3408 | 197 | i2c.write(PCF8591_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 198 | wait_ms(1000); |
y_notsu | 0:3a0493cd3408 | 199 | myled2=0; |
y_notsu | 0:3a0493cd3408 | 200 | wait_ms(1000); |
y_notsu | 0:3a0493cd3408 | 201 | #endif |
y_notsu | 0:3a0493cd3408 | 202 | |
y_notsu | 0:3a0493cd3408 | 203 | #ifdef TEMP |
y_notsu | 0:3a0493cd3408 | 204 | // Temperature |
y_notsu | 0:3a0493cd3408 | 205 | // RDY? |
y_notsu | 0:3a0493cd3408 | 206 | // Clear Display = 0x01 |
y_notsu | 0:3a0493cd3408 | 207 | cmd[0]=CMD; |
y_notsu | 0:3a0493cd3408 | 208 | cmd[1]=0x01; |
y_notsu | 0:3a0493cd3408 | 209 | i2c.write(AQM0802_ADDR,cmd,2); |
y_notsu | 0:3a0493cd3408 | 210 | // Wait 2ms |
y_notsu | 0:3a0493cd3408 | 211 | wait_ms(2); |
y_notsu | 0:3a0493cd3408 | 212 | do{ |
y_notsu | 0:3a0493cd3408 | 213 | //GetI2C(ADT7410_STATUS, ADT7410_ADDR); |
y_notsu | 0:3a0493cd3408 | 214 | |
y_notsu | 0:3a0493cd3408 | 215 | cmd[0]=ADT7410_STATUS; |
y_notsu | 0:3a0493cd3408 | 216 | |
y_notsu | 0:3a0493cd3408 | 217 | i2c.write(ADT7410_ADDR, cmd,1); |
y_notsu | 0:3a0493cd3408 | 218 | i2c.read(ADT7410_ADDR, recv,1); |
y_notsu | 0:3a0493cd3408 | 219 | temp=recv[0]; |
y_notsu | 0:3a0493cd3408 | 220 | }while(temp & 0x80); |
y_notsu | 0:3a0493cd3408 | 221 | |
y_notsu | 0:3a0493cd3408 | 222 | // get temp_high |
y_notsu | 0:3a0493cd3408 | 223 | cmd[0]=ADT7410_TEMP_H; |
y_notsu | 0:3a0493cd3408 | 224 | i2c.write(ADT7410_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 225 | i2c.read(ADT7410_ADDR,recv,1); |
y_notsu | 0:3a0493cd3408 | 226 | temp=recv[0]*0x100; |
y_notsu | 0:3a0493cd3408 | 227 | // get temp_low |
y_notsu | 0:3a0493cd3408 | 228 | cmd[0]=ADT7410_TEMP_L; |
y_notsu | 0:3a0493cd3408 | 229 | i2c.write(ADT7410_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 230 | i2c.read(ADT7410_ADDR,recv,1); |
y_notsu | 0:3a0493cd3408 | 231 | temp+=recv[0]; |
y_notsu | 0:3a0493cd3408 | 232 | // temp/=128; // for C |
y_notsu | 0:3a0493cd3408 | 233 | temp/=13; |
y_notsu | 0:3a0493cd3408 | 234 | //itoa(temp,msg,10); |
y_notsu | 0:3a0493cd3408 | 235 | sprintf(msg,"%d",temp); |
y_notsu | 0:3a0493cd3408 | 236 | l=strlen(msg); |
y_notsu | 0:3a0493cd3408 | 237 | msg[l]=msg[l-1]; |
y_notsu | 0:3a0493cd3408 | 238 | msg[l-1]='.'; |
y_notsu | 0:3a0493cd3408 | 239 | msg[l+1]=0; |
y_notsu | 0:3a0493cd3408 | 240 | LocateLCD(0,0); |
y_notsu | 0:3a0493cd3408 | 241 | PutsLCD(msg); |
y_notsu | 0:3a0493cd3408 | 242 | PutsLCD("C "); |
y_notsu | 0:3a0493cd3408 | 243 | myled2=1; |
y_notsu | 0:3a0493cd3408 | 244 | wait_ms(1000); |
y_notsu | 0:3a0493cd3408 | 245 | #endif |
y_notsu | 0:3a0493cd3408 | 246 | |
y_notsu | 0:3a0493cd3408 | 247 | #ifdef BAR |
y_notsu | 0:3a0493cd3408 | 248 | // Barometer |
y_notsu | 0:3a0493cd3408 | 249 | // get press_high |
y_notsu | 0:3a0493cd3408 | 250 | cmd[0]=LPS331_PRESS_OUT_H; |
y_notsu | 0:3a0493cd3408 | 251 | i2c.write(LPS331_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 252 | i2c.read(LPS331_ADDR,recv,1); |
y_notsu | 0:3a0493cd3408 | 253 | press=recv[0]*0x10000; |
y_notsu | 0:3a0493cd3408 | 254 | // get tpress_low |
y_notsu | 0:3a0493cd3408 | 255 | cmd[0]=LPS331_PRESS_OUT_L; |
y_notsu | 0:3a0493cd3408 | 256 | i2c.write(LPS331_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 257 | i2c.read(LPS331_ADDR,recv,1); |
y_notsu | 0:3a0493cd3408 | 258 | press+=recv[0]*0x100; |
y_notsu | 0:3a0493cd3408 | 259 | // get press_xl |
y_notsu | 0:3a0493cd3408 | 260 | cmd[0]=LPS331_PRESS_POUT_XL_REH; |
y_notsu | 0:3a0493cd3408 | 261 | i2c.write(LPS331_ADDR,cmd,1); |
y_notsu | 0:3a0493cd3408 | 262 | i2c.read(LPS331_ADDR,recv,1); |
y_notsu | 0:3a0493cd3408 | 263 | press+=recv[0]; |
y_notsu | 0:3a0493cd3408 | 264 | // press/=4096; // for hPa |
y_notsu | 0:3a0493cd3408 | 265 | press/=41; |
y_notsu | 0:3a0493cd3408 | 266 | //itoa(press,msg,10); |
y_notsu | 0:3a0493cd3408 | 267 | sprintf(msg,"%d",press); |
y_notsu | 0:3a0493cd3408 | 268 | LocateLCD(0,1); |
y_notsu | 0:3a0493cd3408 | 269 | PutsLCD(msg); |
y_notsu | 0:3a0493cd3408 | 270 | PutsLCD("Pa "); |
y_notsu | 0:3a0493cd3408 | 271 | myled2=0; |
y_notsu | 0:3a0493cd3408 | 272 | wait_ms(1000); |
y_notsu | 0:3a0493cd3408 | 273 | #endif |
y_notsu | 0:3a0493cd3408 | 274 | |
y_notsu | 0:3a0493cd3408 | 275 | } |
y_notsu | 0:3a0493cd3408 | 276 | |
y_notsu | 0:3a0493cd3408 | 277 | } |
y_notsu | 0:3a0493cd3408 | 278 |