Kenji Arai / BME280

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Files at this revision

API Documentation at this revision

Revision 8:4c37112d31cf, committed 2019-01-22

Comitter:
kenjiArai
Date:
Tue Jan 22 22:18:35 2019 +0000
Parent:
7:d94871acb463
Commit message:
address auto selection

Changed in this revision

BME280.cpp Show annotated file Show diff for this revision Revisions of this file
BME280.h Show annotated file Show diff for this revision Revisions of this file 
--- a/BME280.cpp	Tue Jan 15 10:06:32 2019 +0000
+++ b/BME280.cpp	Tue Jan 22 22:18:35 2019 +0000
@@ -74,7 +74,7 @@
     id = getID();
     if (id != 0x60){
         if (address == DEFAULT_SLAVE_ADDRESS){
-            address = DEFAULT_SLAVE_ADDRESS;
+            address = ANOTHER_SLAVE_ADDRESS;
         } else if (address == ANOTHER_SLAVE_ADDRESS){
             address = DEFAULT_SLAVE_ADDRESS;
         }
@@ -155,7 +155,7 @@
     char cmd[4];
 
     if(check_chip() == false){
-        return 100.0f;
+        return -100.0f;
     }
     cmd[0] = 0xfa; // temp_msb
     i2c.write(address, cmd, 1);
@@ -184,7 +184,7 @@
     char cmd[4];
 
     if(check_chip() == false){
-        return 2000.0f;
+        return 0.0f;
     }
 
     cmd[0] = 0xf7; // press_msb
@@ -228,7 +228,7 @@
     char cmd[4];
  
     if(check_chip() == false){
-        return 0.0f;
+        return 120.0f;
     }
 
     cmd[0] = 0xfd; // hum_msb
@@ -276,7 +276,7 @@
     id = getID();
     if (id != 0x60){
         if (address == DEFAULT_SLAVE_ADDRESS){
-            address = DEFAULT_SLAVE_ADDRESS;
+            address = ANOTHER_SLAVE_ADDRESS;
         } else if (address == ANOTHER_SLAVE_ADDRESS){
             address = DEFAULT_SLAVE_ADDRESS;
         }
@@ -346,6 +346,13 @@
     uint32_t raw_data;
     char cmd[8];
 
+    if(check_chip() == false){
+        // If sensor is error then return abnormal data
+        dt->humidity   = 120.0f;
+        dt->temperatue = -100.0f;
+        dt->pressue    = 0.0f;
+        return;
+    }
     // Humidity
     cmd[0] = 0xfd; // hum_msb
     i2c.write(address, cmd, 1);

--- a/BME280.h	Tue Jan 15 10:06:32 2019 +0000
+++ b/BME280.h	Tue Jan 22 22:18:35 2019 +0000
@@ -41,7 +41,7 @@
  *  http://www.page.sannet.ne.jp/kenjia/index.html
  *  http://mbed.org/users/kenjiArai/
  *      Created:    November  21st, 2018
- *      Revised:    December  10th, 2018
+ *      Revised:    January   22nd, 2019
  *
  *  Refrence software
  *  bme280 library