Kenji Arai / Mbed OS LPC1114_barometer_with_data_logging

Barometer program : Data Logger function includes Barometer & temperature (BMP180), Humidity & temp. (RHT03), Sunshine (Cds), RTC(M41T62) data. : Logging data saves into EEPROM (AT24C1024) using ring buffer function.

Dependencies:   AT24C1024 RHT03 TextLCD BMP180 M41T62

Fork of mbed_blinky by Mbed

Please see https://mbed.org/users/kenjiArai/notebook/mbed-lpc1114fn28-barometer-with-data-logging/#

main.cpp@12:1e21119688fe, 2014-06-20 (annotated)

Committer:
kenjiArai
Date:
Fri Jun 20 21:45:12 2014 +0000
Revision:
12:1e21119688fe
Parent:
11:bccfd75e84a0
Child:
13:950adc9d6d61
Barometer program / Step by step approach -> 6th step,; Added EEPROM(AT24C1024) control for data logging

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 7:d3b49f1d9f76 1 /*
kenjiArai 7:d3b49f1d9f76 2 * mbed Application program for the mbed LPC1114FN28
kenjiArai 12:1e21119688fe 3 * Test program -> Check EEPROM
kenjiArai 7:d3b49f1d9f76 4 *
kenjiArai 7:d3b49f1d9f76 5 * Copyright (c) 2014 Kenji Arai / JH1PJL
kenjiArai 7:d3b49f1d9f76 6 * http://www.page.sannet.ne.jp/kenjia/index.html
kenjiArai 7:d3b49f1d9f76 7 * http://mbed.org/users/kenjiArai/
kenjiArai 7:d3b49f1d9f76 8 * Created: June 13th, 2014
kenjiArai 12:1e21119688fe 9 * Revised: June 21st, 2014
kenjiArai 7:d3b49f1d9f76 10 *
kenjiArai 7:d3b49f1d9f76 11 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
kenjiArai 7:d3b49f1d9f76 12 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
kenjiArai 7:d3b49f1d9f76 13 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
kenjiArai 7:d3b49f1d9f76 14 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kenjiArai 7:d3b49f1d9f76 15 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
kenjiArai 7:d3b49f1d9f76 16 */
dan 0:7dec7e9ac085 17
kenjiArai 11:bccfd75e84a0 18 #include "mbed.h"
kenjiArai 12:1e21119688fe 19 #include "BMP180.h" // Own lib. / Pressure sensor
kenjiArai 12:1e21119688fe 20 #include "RHT03.h" // Std. lib./ Humidity sensor
kenjiArai 12:1e21119688fe 21 #include "TextLCD.h" // Std. lib./ LCD control
kenjiArai 12:1e21119688fe 22 #include "AT24C1024.h" // Std. lib./ EEPROM control
kenjiArai 8:f6aa5561f219 23
kenjiArai 11:bccfd75e84a0 24 #define VREF_VOLT 2.482 // TA76431F Vref real measued data
kenjiArai 11:bccfd75e84a0 25 #define R_FIX 9930 // 10K ohm <- real measued data
kenjiArai 12:1e21119688fe 26 #define VOL_OFFSET 3 // Offset data ,= real measured data
kenjiArai 8:f6aa5561f219 27 #define CDS_TBL_SIZE 13
kenjiArai 7:d3b49f1d9f76 28
kenjiArai 11:bccfd75e84a0 29 I2C i2c(dp5,dp27); // SDA, SCL
kenjiArai 7:d3b49f1d9f76 30 DigitalOut myled0(dp28); // LED for Debug
kenjiArai 7:d3b49f1d9f76 31 DigitalOut myled1(dp14); // Indicate state transition
kenjiArai 8:f6aa5561f219 32 DigitalOut analog_pwr(dp6); // VCC for analog interface (vol, cds and vref)
kenjiArai 8:f6aa5561f219 33 DigitalOut vref_pwr(dp4); // VCC for Vref
kenjiArai 7:d3b49f1d9f76 34 DigitalIn sw_chng(dp1,PullUp);// SW for select
kenjiArai 7:d3b49f1d9f76 35 DigitalIn sw_mode(dp2,PullUp);// SW for Mode change
kenjiArai 8:f6aa5561f219 36 AnalogIn cds(dp11); // Input / CDS data
kenjiArai 8:f6aa5561f219 37 AnalogIn vref(dp9); // Input / Bandgap 2.5V
kenjiArai 8:f6aa5561f219 38 AnalogIn vol(dp10); // Input / contrast volume
kenjiArai 10:398f62bb41f7 39 RHT03 humtemp(dp26); // RHT03 interface
kenjiArai 11:bccfd75e84a0 40 Serial pc(dp16,dp15); // UART (vertual COM)
kenjiArai 11:bccfd75e84a0 41 BMP180 bmp180(i2c); // Bosch sensor
kenjiArai 12:1e21119688fe 42 TextLCD_I2C_N i2clcd(&i2c, 0x7c, TextLCD::LCD8x2); // LCD(Akizuki AQM0802A)
kenjiArai 12:1e21119688fe 43 AT24C1024 at24c1024(i2c); // Atmel 1Mbit EE-PROM
kenjiArai 8:f6aa5561f219 44
kenjiArai 8:f6aa5561f219 45 typedef enum {CDS = 0, VREF, VOL} ADC_Select;
kenjiArai 8:f6aa5561f219 46
kenjiArai 9:ce80da60884a 47 // ADC
kenjiArai 8:f6aa5561f219 48 float av_cds, av_vref, av_vol, cal_vcc;
kenjiArai 8:f6aa5561f219 49 float r_cds, lux;
kenjiArai 8:f6aa5561f219 50 uint32_t nor_vol;
kenjiArai 8:f6aa5561f219 51
kenjiArai 10:398f62bb41f7 52 // Humidity Sensor
kenjiArai 10:398f62bb41f7 53 float humidity_temp, humidity;
kenjiArai 10:398f62bb41f7 54
kenjiArai 12:1e21119688fe 55 // EEPROM
kenjiArai 12:1e21119688fe 56 uint8_t eep_buf[256 + 2];
kenjiArai 12:1e21119688fe 57
kenjiArai 8:f6aa5561f219 58 // Cds GL5528 (Dark Resistance 1 Mohm type) SENBA OPTICAL & ELECTRONIC CO.,LTD.
kenjiArai 8:f6aa5561f219 59 // Table value referrence: http://homepage3.nifty.com/skomo/f35/hp35_20.htm
kenjiArai 8:f6aa5561f219 60 const float lux_cds[CDS_TBL_SIZE][2] =
kenjiArai 8:f6aa5561f219 61 {{50,21194},{100,8356},{200,3294},{400,1299},{800,512},{1600,202},{3200,79.6},{6400,31.4},
kenjiArai 8:f6aa5561f219 62 {12800,12.4},{25600,4.88},{51200,1.92},{102400,0.758},{409600,0.118}};
kenjiArai 8:f6aa5561f219 63
kenjiArai 12:1e21119688fe 64 // EEPROM test charcters
kenjiArai 12:1e21119688fe 65 const uint8_t eep_char[256] =
kenjiArai 12:1e21119688fe 66 //0 1 2 3 4 5 6 7
kenjiArai 12:1e21119688fe 67 //12345678901234567890123456789012345678901234567890123456789012345678901
kenjiArai 12:1e21119688fe 68 "The AT24C1024 provides 1048576 bits of serial electrically erasable and"
kenjiArai 12:1e21119688fe 69 //7 8 9 10 11 12 13 14 15
kenjiArai 12:1e21119688fe 70 //2345678901234567890123456789012345678901234567890123456789012345678901234567890123
kenjiArai 12:1e21119688fe 71 " programmable read only memory (EEPROM) organized as 131,072 words of 8 bits each."
kenjiArai 12:1e21119688fe 72 //15 16 17 18 19 20 21 22 23 24
kenjiArai 12:1e21119688fe 73 //45678901234567890123456789012345678901234567890123456789012345678901234567890123456789012
kenjiArai 12:1e21119688fe 74 " The devices cascadable feature allows up to four devices to share a common two-wire bus."
kenjiArai 12:1e21119688fe 75 //24 25 256
kenjiArai 12:1e21119688fe 76 //34567890123456
kenjiArai 12:1e21119688fe 77 " JH1PJL Arai"; // eep_char[255] = 0;
kenjiArai 12:1e21119688fe 78
kenjiArai 9:ce80da60884a 79 //-------------------------------------------------------------------------------------------------
kenjiArai 9:ce80da60884a 80 // Control Program
kenjiArai 9:ce80da60884a 81 //-------------------------------------------------------------------------------------------------
kenjiArai 11:bccfd75e84a0 82 // Normalize ADC data
kenjiArai 8:f6aa5561f219 83 void adc_normalize( ADC_Select n ){
kenjiArai 8:f6aa5561f219 84 int i;
kenjiArai 8:f6aa5561f219 85 float x1,y1,dx;
kenjiArai 8:f6aa5561f219 86
kenjiArai 8:f6aa5561f219 87 switch (n){
kenjiArai 8:f6aa5561f219 88 case CDS:
kenjiArai 11:bccfd75e84a0 89 // v_adc = Rfix / (Rcds + Rfix) -> Rcds = ( Rfix / v_adc ) - Rfix
kenjiArai 8:f6aa5561f219 90 r_cds = (R_FIX / av_cds) - R_FIX;
kenjiArai 8:f6aa5561f219 91 // CDS resistance to Lux conversion using convertion table (luc_cds[][])
kenjiArai 11:bccfd75e84a0 92 for (i =0; i < CDS_TBL_SIZE; i++){ // search table
kenjiArai 11:bccfd75e84a0 93 if ( r_cds <= lux_cds[i][0]){ break; }
kenjiArai 11:bccfd75e84a0 94 }
kenjiArai 11:bccfd75e84a0 95 // Check table position
kenjiArai 11:bccfd75e84a0 96 if (i == 0){
kenjiArai 11:bccfd75e84a0 97 lux = lux_cds[0][1];
kenjiArai 11:bccfd75e84a0 98 break;
kenjiArai 11:bccfd75e84a0 99 } else if ( i == CDS_TBL_SIZE ){
kenjiArai 11:bccfd75e84a0 100 if ( r_cds <= lux_cds[i][0] ){
kenjiArai 11:bccfd75e84a0 101 lux = lux_cds[i-1][1];
kenjiArai 8:f6aa5561f219 102 break;
kenjiArai 8:f6aa5561f219 103 }
kenjiArai 8:f6aa5561f219 104 }
kenjiArai 11:bccfd75e84a0 105 // Linear interpolation
kenjiArai 11:bccfd75e84a0 106 y1 = lux_cds[i-1][1] - lux_cds[i][1];
kenjiArai 11:bccfd75e84a0 107 x1 = lux_cds[i][0] - lux_cds[i-1][0];
kenjiArai 11:bccfd75e84a0 108 dx = r_cds - lux_cds[i-1][0];
kenjiArai 11:bccfd75e84a0 109 lux = lux_cds[i-1][1] - ((dx/x1) * y1);
kenjiArai 8:f6aa5561f219 110 break;
kenjiArai 8:f6aa5561f219 111 case VREF:
kenjiArai 8:f6aa5561f219 112 // vref = VREF_VOLT / VCC -> VCC = VREF_VOLT / vref
kenjiArai 8:f6aa5561f219 113 cal_vcc = VREF_VOLT / vref;
kenjiArai 8:f6aa5561f219 114 break;
kenjiArai 8:f6aa5561f219 115 case VOL:
kenjiArai 8:f6aa5561f219 116 // Vol center = 1.00 (actual 100)
kenjiArai 8:f6aa5561f219 117 nor_vol = (uint32_t)(av_vol * 200) + VOL_OFFSET;
kenjiArai 8:f6aa5561f219 118 break;
kenjiArai 8:f6aa5561f219 119 }
kenjiArai 8:f6aa5561f219 120 }
kenjiArai 8:f6aa5561f219 121
kenjiArai 11:bccfd75e84a0 122 // Read adc data and averaging
kenjiArai 8:f6aa5561f219 123 void adc_all_read( void){
kenjiArai 11:bccfd75e84a0 124 if (av_cds == 0){ av_cds = cds.read();
kenjiArai 11:bccfd75e84a0 125 } else { av_cds = av_cds *0.5 + cds.read() * 0.5;
kenjiArai 10:398f62bb41f7 126 }
kenjiArai 11:bccfd75e84a0 127 if (av_vref == 0){ av_vref = vref.read();
kenjiArai 11:bccfd75e84a0 128 } else { av_vref = av_vref *0.9 + vref.read() * 0.1;
kenjiArai 10:398f62bb41f7 129 }
kenjiArai 11:bccfd75e84a0 130 if (av_vol == 0){ av_vol = vol.read();
kenjiArai 11:bccfd75e84a0 131 } else { av_vol = av_vol *0.2 + vol.read() * 0.8;
kenjiArai 10:398f62bb41f7 132 }
kenjiArai 8:f6aa5561f219 133 }
kenjiArai 8:f6aa5561f219 134
kenjiArai 11:bccfd75e84a0 135 // Read Humidity sensor data
kenjiArai 10:398f62bb41f7 136 void hum_RHT03_read( void){
kenjiArai 11:bccfd75e84a0 137 while (true){ // wait data
kenjiArai 11:bccfd75e84a0 138 if ( humtemp.readData() == RHT_ERROR_NONE ){ break; }
kenjiArai 10:398f62bb41f7 139 }
kenjiArai 11:bccfd75e84a0 140 if (humidity_temp == 0){humidity_temp = humtemp.getTemperatureC();
kenjiArai 11:bccfd75e84a0 141 } else { humidity_temp = humidity_temp * 0.9 + humtemp.getTemperatureC() * 0.1;
kenjiArai 10:398f62bb41f7 142 }
kenjiArai 11:bccfd75e84a0 143 if ( humidity == 0 ){ humidity = humtemp.getHumidity();
kenjiArai 11:bccfd75e84a0 144 } else { humidity = humidity * 0.9 + humtemp.getHumidity() * 0.1;
kenjiArai 10:398f62bb41f7 145 }
kenjiArai 8:f6aa5561f219 146 }
dan 0:7dec7e9ac085 147
kenjiArai 12:1e21119688fe 148 // Clear LCD
kenjiArai 12:1e21119688fe 149 void cls( void){
kenjiArai 12:1e21119688fe 150 i2clcd.locate(0, 0);
kenjiArai 12:1e21119688fe 151 i2clcd.printf(" ");
kenjiArai 12:1e21119688fe 152 i2clcd.locate(0, 1);
kenjiArai 12:1e21119688fe 153 i2clcd.printf(" ");
kenjiArai 12:1e21119688fe 154 }
kenjiArai 12:1e21119688fe 155
kenjiArai 11:bccfd75e84a0 156 //-------------------------------------
kenjiArai 11:bccfd75e84a0 157 // Application program starts here
kenjiArai 11:bccfd75e84a0 158 //-------------------------------------
dan 0:7dec7e9ac085 159 int main() {
kenjiArai 12:1e21119688fe 160 int no =0;
kenjiArai 12:1e21119688fe 161 uint8_t dt[4];
kenjiArai 12:1e21119688fe 162 AT24C_STATUS status;
kenjiArai 12:1e21119688fe 163
kenjiArai 8:f6aa5561f219 164 pc.baud(9600);
kenjiArai 12:1e21119688fe 165 pc.printf("\r\nmbed LPC1114FN28 test program by JH1PJL created on "__DATE__"(UTC)\r\n");
kenjiArai 11:bccfd75e84a0 166 i2clcd.setContrast(25);
kenjiArai 11:bccfd75e84a0 167 i2clcd.locate(0, 0);
kenjiArai 11:bccfd75e84a0 168 i2clcd.printf("LPC1114F");
kenjiArai 11:bccfd75e84a0 169 i2clcd.locate(0, 1);
kenjiArai 11:bccfd75e84a0 170 i2clcd.printf(" JH1PJL ");
kenjiArai 10:398f62bb41f7 171 // Initialize data
kenjiArai 10:398f62bb41f7 172 av_cds = 0;
kenjiArai 10:398f62bb41f7 173 av_vref = 0;
kenjiArai 10:398f62bb41f7 174 av_vol = 0;
kenjiArai 10:398f62bb41f7 175 humidity_temp = 0;
kenjiArai 10:398f62bb41f7 176 humidity = 0;
kenjiArai 11:bccfd75e84a0 177 // Show initial screen
kenjiArai 12:1e21119688fe 178 wait(5.0);
kenjiArai 7:d3b49f1d9f76 179 while(1) {
kenjiArai 11:bccfd75e84a0 180 // ---------- Cds Sensor, Vref, Volume ---------------------------------------------------
kenjiArai 9:ce80da60884a 181 // Power on / Analog sensor
kenjiArai 8:f6aa5561f219 182 analog_pwr = 1;
kenjiArai 8:f6aa5561f219 183 vref_pwr = 1;
kenjiArai 8:f6aa5561f219 184 wait(0.2);
kenjiArai 8:f6aa5561f219 185 adc_all_read();
kenjiArai 9:ce80da60884a 186 // Power off / Analog sensor
kenjiArai 11:bccfd75e84a0 187 analog_pwr = 0;
kenjiArai 9:ce80da60884a 188 // Normalize
kenjiArai 11:bccfd75e84a0 189 adc_normalize(CDS);
kenjiArai 11:bccfd75e84a0 190 adc_normalize(VREF);
kenjiArai 12:1e21119688fe 191 adc_normalize(VOL);
kenjiArai 12:1e21119688fe 192 cls();
kenjiArai 11:bccfd75e84a0 193 i2clcd.locate(0, 0); // 1st line top
kenjiArai 11:bccfd75e84a0 194 // 12345678
kenjiArai 12:1e21119688fe 195 i2clcd.printf("L:%.1f", lux);
kenjiArai 11:bccfd75e84a0 196 i2clcd.locate(0, 1); // 2nd line top
kenjiArai 12:1e21119688fe 197 i2clcd.printf("V:%.3f", cal_vcc);
kenjiArai 12:1e21119688fe 198 myled0 = 1;
kenjiArai 12:1e21119688fe 199 pc.printf( "\r\nCds:%.0fohm -> %.1flux, Vcc:%.3fV, Vol:%d\r\n",
kenjiArai 12:1e21119688fe 200 r_cds, lux, cal_vcc, nor_vol );
kenjiArai 12:1e21119688fe 201 myled0 = 0;
kenjiArai 10:398f62bb41f7 202 wait(2.0);
kenjiArai 11:bccfd75e84a0 203 // ---------- Barometer Sensor / BMP180 --------------------------------------------------
kenjiArai 11:bccfd75e84a0 204 bmp180.normalize();
kenjiArai 12:1e21119688fe 205 cls();
kenjiArai 11:bccfd75e84a0 206 i2clcd.locate(0, 0); // 1st line top
kenjiArai 12:1e21119688fe 207 i2clcd.printf("P:%.1f", bmp180.read_pressure());
kenjiArai 11:bccfd75e84a0 208 i2clcd.locate(0, 1); // 2nd line top
kenjiArai 12:1e21119688fe 209 i2clcd.printf("T:%\+-6.1f", bmp180.read_temperature());
kenjiArai 9:ce80da60884a 210 myled1 = 1;
kenjiArai 12:1e21119688fe 211 pc.printf("Pres:%4.1fhPa, Temp:%\+-0.1fdegC\r\n", bmp180.read_pressure(), bmp180.read_temperature());
kenjiArai 8:f6aa5561f219 212 myled1 = 0;
kenjiArai 10:398f62bb41f7 213 wait(4.0);
kenjiArai 11:bccfd75e84a0 214 // ---------- Humidity Sensor / RHT03 ----------------------------------------------------
kenjiArai 10:398f62bb41f7 215 hum_RHT03_read(); // Read Humidity data then avaraging
kenjiArai 12:1e21119688fe 216 cls();
kenjiArai 11:bccfd75e84a0 217 i2clcd.locate(0, 0); // 1st line top
kenjiArai 12:1e21119688fe 218 i2clcd.printf("H:%.1f", humidity);
kenjiArai 11:bccfd75e84a0 219 i2clcd.locate(0, 1); // 2nd line top
kenjiArai 12:1e21119688fe 220 i2clcd.printf("T:%\+-6.1f", humidity_temp);
kenjiArai 10:398f62bb41f7 221 myled1 = 1;
kenjiArai 12:1e21119688fe 222 pc.printf("Humid: %0.1f%%RH, Temp:%\+-0.1fdegC\r\n", humidity, humidity_temp);
kenjiArai 12:1e21119688fe 223 myled1 = 0;
kenjiArai 10:398f62bb41f7 224 wait(2.0);
kenjiArai 12:1e21119688fe 225 // ---------- Check EEPROM ----------------------------------------------------
kenjiArai 12:1e21119688fe 226 cls();
kenjiArai 12:1e21119688fe 227 i2clcd.locate(0, 0); // 1st line top
kenjiArai 12:1e21119688fe 228 // 12345678
kenjiArai 12:1e21119688fe 229 i2clcd.printf(" EEPROM ", humidity);
kenjiArai 12:1e21119688fe 230 pc.printf("EEPROM -> ", humidity, humidity_temp);
kenjiArai 12:1e21119688fe 231 i2clcd.locate(0, 1); // 2nd line top
kenjiArai 12:1e21119688fe 232 if (no == 4) { // check page write mode (part1)
kenjiArai 12:1e21119688fe 233 ++no;
kenjiArai 12:1e21119688fe 234 strcpy((char *)eep_buf,(char *)eep_char); // copy the data
kenjiArai 12:1e21119688fe 235 status = at24c1024.write_page(0x100, eep_buf, sizeof(eep_buf)); // 0x100= page address
kenjiArai 12:1e21119688fe 236 pc.printf("(Status: %d) ", status);
kenjiArai 12:1e21119688fe 237 if (status == AT24C_OK){ // wrote without trouble
kenjiArai 12:1e21119688fe 238 wait(1.0);
kenjiArai 12:1e21119688fe 239 for (int i=0; i < 256; i++){ // clear buffer for read data checking
kenjiArai 12:1e21119688fe 240 eep_buf[i] = 0;
kenjiArai 12:1e21119688fe 241 }
kenjiArai 12:1e21119688fe 242 status = at24c1024.read_page(0x100, eep_buf, sizeof(eep_buf));
kenjiArai 12:1e21119688fe 243 pc.printf("(Status: %d) ", status);
kenjiArai 12:1e21119688fe 244 if (status == AT24C_OK){ // read w/o trouble
kenjiArai 12:1e21119688fe 245 pc.printf("\r\n%s\r\n", eep_buf);
kenjiArai 12:1e21119688fe 246 if (strncmp((char *)eep_buf, (char *)eep_char, 256) == 0){ // equal R/W data
kenjiArai 12:1e21119688fe 247 i2clcd.printf("page-OK");
kenjiArai 12:1e21119688fe 248 pc.printf("Page access OK\r\n");
kenjiArai 12:1e21119688fe 249 } else { // Read != Wrote
kenjiArai 12:1e21119688fe 250 i2clcd.printf("CMP-NG");
kenjiArai 12:1e21119688fe 251 pc.printf("Page access Comp NG\r\n");
kenjiArai 12:1e21119688fe 252 }
kenjiArai 12:1e21119688fe 253 } else { // read w/ trouble
kenjiArai 12:1e21119688fe 254 i2clcd.printf("RD-NG");
kenjiArai 12:1e21119688fe 255 pc.printf("Page access read NG\r\n");
kenjiArai 12:1e21119688fe 256 }
kenjiArai 12:1e21119688fe 257 } else { // write w/ trouble
kenjiArai 12:1e21119688fe 258 i2clcd.printf("WR -NG");
kenjiArai 12:1e21119688fe 259 pc.printf("Write NG\r\n");
kenjiArai 12:1e21119688fe 260 }
kenjiArai 12:1e21119688fe 261 wait(0.5);
kenjiArai 12:1e21119688fe 262 } else if (no == 5) { // check page write mode (part2)
kenjiArai 12:1e21119688fe 263 no = 0;
kenjiArai 12:1e21119688fe 264 for (int i=0; i < 256; i++){ // set writing data 255,254,,,,,3,2,1,0
kenjiArai 12:1e21119688fe 265 eep_buf[i] = 255 - (uint8_t)i;
kenjiArai 12:1e21119688fe 266 }
kenjiArai 12:1e21119688fe 267 status = at24c1024.write_page(0x1ff00, eep_buf, sizeof(eep_buf));
kenjiArai 12:1e21119688fe 268 pc.printf("(Status: %d) ", status);
kenjiArai 12:1e21119688fe 269 if (status == AT24C_OK){
kenjiArai 12:1e21119688fe 270 wait(1.0);
kenjiArai 12:1e21119688fe 271 for (int i=0; i < 256; i++){ // clear buffer
kenjiArai 12:1e21119688fe 272 eep_buf[i] = 0;
kenjiArai 12:1e21119688fe 273 }
kenjiArai 12:1e21119688fe 274 status = at24c1024.read_page(0x1ff00, eep_buf, sizeof(eep_buf));
kenjiArai 12:1e21119688fe 275 pc.printf("(Status: %d) ", status);
kenjiArai 12:1e21119688fe 276 if (status == AT24C_OK){
kenjiArai 12:1e21119688fe 277 pc.printf("\r\n0:%d, 64:%d, 128:%d, 254:%d, 255:%d\r\n",
kenjiArai 12:1e21119688fe 278 eep_buf[0], eep_buf[64], eep_buf[128], eep_buf[254], eep_buf[255]);
kenjiArai 12:1e21119688fe 279 if ((eep_buf[0] == 255) && (eep_buf[64] == 255 - 64)
kenjiArai 12:1e21119688fe 280 && (eep_buf[128] == 255-128) && (eep_buf[255] == 0)){
kenjiArai 12:1e21119688fe 281 i2clcd.printf("page-OK");
kenjiArai 12:1e21119688fe 282 pc.printf("Page access OK\r\n");
kenjiArai 12:1e21119688fe 283 } else {
kenjiArai 12:1e21119688fe 284 i2clcd.printf("CMP-NG");
kenjiArai 12:1e21119688fe 285 pc.printf("Page access Comp NG\r\n");
kenjiArai 12:1e21119688fe 286 }
kenjiArai 12:1e21119688fe 287 } else {
kenjiArai 12:1e21119688fe 288 i2clcd.printf("RD-NG");
kenjiArai 12:1e21119688fe 289 pc.printf("Page access read NG\r\n");
kenjiArai 12:1e21119688fe 290 }
kenjiArai 12:1e21119688fe 291 } else {
kenjiArai 12:1e21119688fe 292 i2clcd.printf("WR -NG");
kenjiArai 12:1e21119688fe 293 pc.printf("Write NG\r\n");
kenjiArai 12:1e21119688fe 294 }
kenjiArai 12:1e21119688fe 295 wait(0.5);
kenjiArai 12:1e21119688fe 296 } else { // Write and read (single byte)
kenjiArai 12:1e21119688fe 297 if (no == 0){ // Initial setting
kenjiArai 12:1e21119688fe 298 // Check EEPROM (step0)
kenjiArai 12:1e21119688fe 299 at24c1024.write(0,no);
kenjiArai 12:1e21119688fe 300 wait(0.1);
kenjiArai 12:1e21119688fe 301 at24c1024.write(1,0);
kenjiArai 12:1e21119688fe 302 wait(0.1);
kenjiArai 12:1e21119688fe 303 at24c1024.write(2,0x55);
kenjiArai 12:1e21119688fe 304 wait(0.1);
kenjiArai 12:1e21119688fe 305 at24c1024.write(3,0xaa);
kenjiArai 12:1e21119688fe 306 wait(0.1);
kenjiArai 12:1e21119688fe 307 dt[0] = 0xff;
kenjiArai 12:1e21119688fe 308 dt[1] = 1;
kenjiArai 12:1e21119688fe 309 dt[2] = 2;
kenjiArai 12:1e21119688fe 310 dt[3] = 3;
kenjiArai 12:1e21119688fe 311 }
kenjiArai 12:1e21119688fe 312 // read 4 bytes
kenjiArai 12:1e21119688fe 313 dt[0] = at24c1024.read(0);
kenjiArai 12:1e21119688fe 314 dt[1] = at24c1024.read(1);
kenjiArai 12:1e21119688fe 315 dt[2] = at24c1024.read(2);
kenjiArai 12:1e21119688fe 316 dt[3] = at24c1024.read(3);
kenjiArai 12:1e21119688fe 317 if (dt[0] != no){
kenjiArai 12:1e21119688fe 318 i2clcd.locate(0, 1); // 2nd line top
kenjiArai 12:1e21119688fe 319 i2clcd.printf("NG", humidity_temp);
kenjiArai 12:1e21119688fe 320 pc.printf("NG\r\n", humidity, humidity_temp);
kenjiArai 12:1e21119688fe 321 } else {
kenjiArai 12:1e21119688fe 322 if ((dt[1] == 0) && (dt[2] == 0x55) && (dt[3] == 0xaa)){
kenjiArai 12:1e21119688fe 323 i2clcd.printf("-> OK");
kenjiArai 12:1e21119688fe 324 pc.printf("OK\r\n");
kenjiArai 12:1e21119688fe 325 } else {
kenjiArai 12:1e21119688fe 326 i2clcd.printf("-> NG ");
kenjiArai 12:1e21119688fe 327 pc.printf("NG\r\n");
kenjiArai 12:1e21119688fe 328 }
kenjiArai 12:1e21119688fe 329 }
kenjiArai 12:1e21119688fe 330 pc.printf("EEPROM 0x%x,0x%x,0x%x,0x%x\r\n", dt[0],dt[1],dt[2],dt[3]);
kenjiArai 12:1e21119688fe 331 at24c1024.write(0,++no); // write sequence number into EEPROM
kenjiArai 12:1e21119688fe 332 wait(1.0);
kenjiArai 12:1e21119688fe 333 }
kenjiArai 7:d3b49f1d9f76 334 }
dan 0:7dec7e9ac085 335 }