Diff: main.cpp

Revision:

0:20719c1a48f7

Child:

1:c9bed9dbeed5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 03 17:19:46 2014 +0000
@@ -0,0 +1,200 @@
+#include "mbed.h"
+#include "TSISensor.h"                      //touch sensor
+#include "MMA8451Q.h"                       //accelerometer
+
+int revision = 100;
+
+Serial pc(USBTX, USBRX);                    //tx, rx
+
+MMA8451Q acc(PTE25, PTE24, 0x3a);           //accelerometer
+I2C i2c0(PTE0, PTE1);                       //i2c bus 0
+I2C i2c1(PTE25, PTE24);                     //i2c bus 1
+
+#define LED_ON      0
+#define LED_OFF     1
+DigitalOut rled(LED_RED);                   //KL25Z red led
+DigitalOut gled(LED_GREEN);                 //KL25Z green led
+// DO NOT Use LED_BLUE - pin PTD1 already in use by WiFi chip
+
+int gDebug = 1;                             //global debug print flag
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+//RTC specific variables and constants
+
+#define TBUFLEN             10              //size of smaller ascii time buffers
+time_t ctTime;                              //time structure
+int DST = 0;                                //Daylight Saving Time (or as defined in .ini file)
+int TZone = -8;                             //Time Zone from UTC (or as defined in .ini file)
+int NTPUpdateValue = 7200 ;//86400;         //every 2 hours, this KL25Z has a FAST RTC  //update RTC every 24 hours (or as defined in .ini file)
+char timebuf_hm[TBUFLEN];                   //local time format buffer - 21:16
+char timebuf_hms[TBUFLEN];                  //local time format buffer - 21:16:43
+char timebuf_mdy[TBUFLEN];                  //local time format buffer - 04/01/14
+char timebuf_dMyy[TBUFLEN + 4];             //local time format buffer - 01-Apr-2014
+
+int BootTime = 0;                           //RTC at boot up
+int StartTime = 0;                          //time we powered up
+int SysUpTime = 0;                          //time we've been alive
+int EventTime = 0;                          //for 143 debug, next time to save data in EVENTS.CSV
+int RTCupdate = 0;                          //time until next NTP update timer
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+// Print build date / time  Note: display is UTC, not local time
+// Adafruit CC3000 WiFi Shield with uFL Connector for Ext Antenna
+// http://www.adafruit.com/products/1534
+
+void printBuildDate() {
+    pc.printf("KL25Z / WWVB Tests v%d  build: " __DATE__ " " __TIME__ "(UTC)  K Braun\n", revision);
+}
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+// initial splash display
+
+void initSplash() {
+    pc.printf("\n\n");
+    pc.printf("-------------------------------------------------------------------\n");
+    printBuildDate();
+}
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+//Detect I2C device chain
+
+extern I2C i2c0;
+extern I2C i2c1;
+
+int dispI2C(int i2cchain) {
+    int count = 0;
+    for (int address = 2; address < 256; address +=2) {
+        if(((i2cchain == 0) && (!i2c0.write(address, NULL, 0))) || ((i2cchain == 1) && (!i2c1.write(address, NULL, 0)))) {
+            wait_us(50);
+            pc.printf("   - i2c chain %d: device found at address 0x%02X  \n", i2cchain, address);
+            count++;
+        }        
+    }
+    return(count);
+}
+//--------------------------------------------------------------------------------------------------------------------------------------//
+//Detect I2C device chain
+
+void find_i2c(int i2cbus) {
+    pc.printf("Searching for devices on i2c bus %d ...\n", i2cbus);
+    int count = dispI2C(i2cbus);
+    pc.printf(" - %2d devices found on i2c bus %d\n", count, i2cbus);
+}
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+// Update time
+
+void UpdateTime() {
+    ctTime = time(NULL) + ((TZone + DST) * 3600);   //timezone and dst offsets
+    SysUpTime = ctTime - StartTime;
+    strftime(timebuf_mdy, TBUFLEN, "%m/%d/%y", localtime(&ctTime));
+    strftime(timebuf_dMyy, TBUFLEN * 2, "%d-%b-%Y", localtime(&ctTime));
+    strftime(timebuf_hm, TBUFLEN, "%H:%M", localtime(&ctTime));
+    strftime(timebuf_hms, TBUFLEN, "%H:%M:%S", localtime(&ctTime));
+}
+
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+//general housekeeping items whilw waiting in loops
+
+void HouseKeeping() {
+    UpdateTime();
+}
+
+//--------------------------------------------------------------------------------------------------------------------------------------//
+//--------------------------------------------------------------------------------------------------------------------------------------//
+// *  \brief HTTP client demo
+// *  \param  none
+// *  \return int
+
+int main() {
+    rled = LED_OFF;
+    gled = LED_OFF;
+    ctTime = time(NULL);
+    StartTime = ctTime;                     //get time we started up
+    BootTime = ctTime;                      //save boot time for later (RTC debug)
+
+    pc.baud(230400);
+    initSplash();
+    
+    //who caused the reset condition??
+    uint16_t resetReg = (RCM->SRS1 << 8) | RCM->SRS0;
+    pc.printf("CPU Reset Source> 1: 0x%02x   0: 0x%02x\r\n", resetReg >> 8, resetReg & 255); 
+
+    //initialize the USB serial port interrupt and thread pointer
+    pc.printf("Initializing Serial Port Rx Interrupt...   \r\n");
+    
+       //look for devices on i2c buses
+    find_i2c(0);
+    find_i2c(1);
+    //enMMA8491 = 0;
+    //get kl25z chip serial number and configuration ID registers
+    uint32_t idRegH = SIM->UIDMH;
+    uint32_t idRegM = SIM->UIDML;
+    uint32_t idRegL = SIM->UIDL;
+    pc.printf("KL25Z id: 0x%04x %08x %08x\r\n", idRegH, idRegM, idRegL);
+    uint32_t isSDIR = SIM->SDID;
+    if(gDebug > 1) pc.printf("CPU type:    0x%08x\r\n  Family:    %x\r\n  SubFamily: %x\r\n  Series:    %x\r\n  SRAM Size: %x\r\n  Revision:  %x\r\n  Die:       %02x\r\n  Package:   %x\r\n", 
+                   isSDIR, isSDIR >> 28, (isSDIR >> 24) & 15, (isSDIR >> 20) & 15, (isSDIR >> 16) & 15, (isSDIR >> 12) & 15, (isSDIR >> 7) & 0x3f, (isSDIR >> 0) & 15);
+    uint32_t isFCFG = SIM->FCFG1;
+    if(gDebug > 1) pc.printf("Flash size:  0x%08x\r\n  Size:      %x\r\n", isFCFG, (isFCFG >> 24) & 15);  
+
+
+    //check to see if the RTC is operational.  
+    //NOTE: bootloader must be MBED, not FRDMKL25Z. Otherwise pin PTC1 (J10-12) will not have a clock signal for the RTC
+    if(gDebug) pc.printf("Checking the RTC...  ");
+    wait_ms(1500);
+    ctTime = time(NULL);
+    if(gDebug) pc.printf("ctTime: %d   StartTime: %d\r\n", ctTime, StartTime);
+    if((StartTime == ctTime) || (ctTime <= 1000000)) {
+        pc.printf("*** Local RTC stopped, initializing the RTC.  !!CHECK BATTERY!!\r\n");
+        pc.printf("*** Note: Time is incorrect, needs to be updated!!!\r\n");
+        set_time(1357000000);                //set time to something close, Jan01 2013 00:26:40, but still way off
+    } else {
+        if(gDebug) pc.printf("Local RTC is running\r\n");
+    } 
+    UpdateTime();
+    StartTime = ctTime;
+    if(gDebug) pc.printf("Date: %s   ", timebuf_dMyy);
+    if(gDebug) pc.printf("Time: %s \n", timebuf_hms);
+    
+    //set up the cc3000 paramaters
+    TSISensor touchSensor;
+        
+    float accels[3];
+    float resting,reading;
+    float THRESHOLD = 0.15;
+    float position;
+    
+    wait_ms(500);
+    acc.getAccAllAxis( accels );
+    resting = abs(accels[0]) + abs(accels[1]) + abs(accels[2]);
+    pc.printf("Set up resting accelerometer - %.2f\r\n", resting);
+    wait_ms(100);
+    rled = LED_OFF;
+    gled = LED_OFF;
+    pc.printf("Ready\r\n");
+    int bumps = 0;
+    while(1) {
+        HouseKeeping();
+        acc.getAccAllAxis( accels );
+        reading = abs(accels[0]) + abs(accels[1]) + abs(accels[2]);
+        if (abs(resting - reading) > THRESHOLD ){
+            rled = LED_ON;
+            gled = LED_ON;
+            wait_ms(100);
+            bumps++;
+            position = touchSensor.readPercentage();
+            //pc.printf( "BUMPED  %d times,  resting %.2f   read %.2f  position %.2f \r\n", bumps, resting, reading, position );
+            //pc.printf("Date: %s   ", timebuf_dMyy);
+            //pc.printf("Time: %s \n", timebuf_hms);
+            rled = LED_OFF;
+            wait_ms(200);
+            gled = LED_OFF;
+            wait_ms(200);
+        }
+    
+    }
+    
+}
+