Revision 7:3886935f9364, committed 2016-09-15

Comitter:

joeata2wh

Date:

Thu Sep 15 18:33:56 2016 +0000

Parent:

6:26e862e19be2

Commit message:

This version works with STM Nucleo F303K8 but SB16,SB18 must be removed to allow I2C and SPI to work simultaneously on that board

Changed in this revision

diff -r 26e862e19be2 -r 3886935f9364 main.cpp
--- a/main.cpp	Thu Mar 31 22:15:35 2016 +0000
+++ b/main.cpp	Thu Sep 15 18:33:56 2016 +0000
@@ -6,6 +6,29 @@
   Take a look at A2WH.com Producing Water from Air using Solar Energy
   March-2016 License: https://developer.mbed.org/handbook/MIT-Licence 
   Please contact us http://a2wh.com for help with custom design projects.
+  
+  When using F303K8 and I2C 
+    SB16 and SB18 must be removed because
+    they link D4 to A4 and D5 to A5
+    PG #12 http://www.st.com/content/ccc/resource/technical/document/user_manual/e3/0e/88/05/e8/74/43/a0/DM00231744.pdf/files/DM00231744.pdf/jcr:content/translations/en.DM00231744.pdf    
+   
+    FRAM Chip Interface MB85RS2MTPH-G-JNE1 
+        3 MBit FRAM.  Also works with WinBond W25Q80BV and Windbond 8MB chips.
+        
+    #1 - Chip Select 
+    #2 - DO - Data Out hook to MISO
+    #3 - WP - Write  Protect - connect GND
+    #4 - GND
+    #5 - DI - Data In - hook to MOSI
+    #6 - CLk- Clock - Hook to SPI_SCLK
+    #7 - HD - Hold - connect VCC 3.3V
+    #8 - VCC - Connect VCC 3.3V
+    
+    See Also: http://www.instructables.com/id/How-to-Design-with-Discrete-SPI-Flash-Memory/step2/The-WinBond-Device-Interface/
+    
+    If system seems to return garbage after writting test data 
+    then one or more pins are most likely linked with a solder bridge
+    check the users guide for the board you are using. 
 */
     
 #include "mbed.h"
@@ -21,17 +44,18 @@
 #define dataLogMISOPin  SPI1_MISO
 #define dataLogMOSIPin  SPI1_MOSI
 #define dataLogCLKPin   SPI1_SCK
-#define dataLogSelectPin PC_12
+#define dataLogSelectPin PA_4
 
 //#define DO_LOG_ERASE  // uncomment to erase the existing log.
 //#define DO_SEND_MANUAL  // uncomment to send first 1000 bytes to pc on startup
 //#define DO_SEND_ALL // uncomment to send entire log to PC on startup
-//#define DO_SEND_LAST // uncomment to sent last 900 bytes to pc on startup
+//#define DO_SEND_LAST // uncomment to send last 900 bytes to pc on startup
+//#define TEST_BASIC_READ_WRITE // uncomment to erase chip and test basic read write interface
 
 AnalogIn waterTempSense(A0);
 AnalogIn oxygenLevelSense(A1);
 AnalogIn solarStrengthSense(A2);
-AnalogIn waterSpeedSense(A3);
+
 // imagine for sake of example that we have
 // circuitry that actually convert these Volt
 // readings to useful readings.
@@ -54,10 +78,10 @@
         float waterTemp = waterTempSense.read() * adc_ref;
         float oxygenLevel = oxygenLevelSense.read() * adc_ref;
         float solarStrength = solarStrengthSense.read() * adc_ref;
-        float waterSpeed = waterSpeedSense.read() * adc_ref;
+        //float waterSpeed = waterSpeedSense.read() * adc_ref;
     
         char tbuff[256];
-        sprintf(tbuff, "%0.2f,%0.2f,%0.2f,%0.2f", waterTemp, oxygenLevel, solarStrength,waterSpeed);
+        sprintf(tbuff, "%0.2f,%0.2f,%0.2f", waterTemp, oxygenLevel, solarStrength);
         dlLog(lgr, "sensors",tbuff);
         // date and time are automatically recorded with the call.
         // time is only recorded to the second granularity and dates
@@ -102,10 +126,23 @@
     char dlbuff[81]; // buffer used internally by this instance of data log
     DataLogChipType dlchip(dataLogMOSIPin, dataLogMISOPin, dataLogCLKPin, dataLogSelectPin);
     pc.printf("\r\nInitialized Data Log Chip");
-    struct DLOG *lgr = dlMake(&dlchip, dlbuff, 80, &pc);    
+    
     
+    #ifdef TEST_BASIC_READ_WRITE  
+    printf("start basic write test\r\n");
+    printf("chipErase\r\n");
+    dlchip.chipErase(); 
+    memset(dlbuff,0,30);   
+    memcpy(dlbuff, "I am a test\r\n\r\n\r\n",17);
+    dlchip.writeStream(100,dlbuff, 17);
+    memset(dlbuff,0,30);
+    dlchip.readStream(100, dlbuff, 17);
+    printf("read buffer =%s\r\n", dlbuff);
+    #endif
+
+    struct DLOG *lgr = dlMake(&dlchip, dlbuff, 80, &pc);    
     pc.printf("\r\nInitialized Logger\r\n");    
-    pc.printf("logger nextWritePos=%ld", lgr->nextWritePos);
+    pc.printf("logger nextWritePos=%ld", lgr->nextWritePos);    
     
     dlHelp(lgr); // send data log command help to pc. 
     #ifdef DO_LOG_ERASE