Revision 0:918a2b064be6, committed 2011-02-18

Comitter:

marcelvandekamp

Date:

Fri Feb 18 13:46:46 2011 +0000

Commit message:

V3

Changed in this revision

diff -r 000000000000 -r 918a2b064be6 ads8320/ads8320.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ads8320/ads8320.cpp	Fri Feb 18 13:46:46 2011 +0000
@@ -0,0 +1,50 @@
+
+
+#include "ads8320.h"
+
+ads8320::ads8320(PinName mosi, PinName miso, PinName sclk, PinName cs)
+    : m_spi(mosi, miso, sclk)
+    , m_cs(cs) {
+    m_cs=1;
+    m_spi.frequency(1000000); // the fastest of the sensor
+    m_spi.format(8, 0); // duda son dos palabras de 8 bits? 
+   // wait(0.5);
+    //------------------------------------------------
+    // pc.printf("RESET\r\n");
+    write_register(0x06,0x01);
+  // wait(0.5);
+
+    // pc.printf("Initialize High Resolution Constant Reading Mode\r\n");
+    write_register(0x03,0x0A);
+    //wait(0.5);
+}
+
+
+ unsigned int ads8320::readTemperature() {  //was float
+    unsigned int temp_in = read_register16(TEMP);
+   // temp_in /= 20;
+    unsigned int Ti = temp_in;  
+    return Ti; //return temp_in;
+}
+
+void ads8320::write_register(char register_name, char register_value) {
+    register_name <<= 2;
+    register_name |= 0x02; //write command
+    m_cs=0; //Select SPI device
+    m_spi.write(register_name); //Send register location
+    m_spi.write(register_value); //Send value to record into register
+    m_cs=1;
+}
+
+unsigned int ads8320::read_register16(char register_name) {   
+    register_name <<= 2;
+    register_name &= 0xFC; //Read command
+    m_cs=0; //Select SPI Device
+    m_spi.write(register_name); //Write byte to device
+    unsigned int in_byte1 = m_spi.write(0x00);     //(was zonder unsigned)
+    unsigned int in_byte2 = m_spi.write(0x00);
+    m_cs=1;
+    //float in_word= (in_byte1<<=8) | (in_byte2); 
+    unsigned int in_word= (in_byte1<<=8) | (in_byte2);  
+    return(in_word);
+}
\ No newline at end of file

diff -r 000000000000 -r 918a2b064be6 ads8320/ads8320.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ads8320/ads8320.h	Fri Feb 18 13:46:46 2011 +0000
@@ -0,0 +1,41 @@
+
+
+#ifndef _ads8320_H
+#define _ads8320_H
+
+#include "mbed.h"
+
+class ads8320 {
+    public:
+        /**
+         * Constructor.
+         *
+         * @param mosi SPI MOSI pin
+         * @param miso SPI MISO pin
+         * @param sclk SPI SCLK pin
+         * @param cs Chip select pin
+         */
+        ads8320(PinName mosi, PinName miso, PinName sclk, PinName cs);
+        
+        ~ads8320() { /* empty */ };
+        
+   
+        unsigned long readPressure();
+        
+ 
+   
+        unsigned int readTemperature(); //was float
+        
+    private:
+ 
+        static const char TEMP = 0x21;       //16 bit temp
+        SPI m_spi;
+        DigitalOut m_cs;
+        
+       // char read_register(char register_name);
+        void write_register(char register_name, char register_value);
+       // float read_register16(char register_name);
+        unsigned int read_register16(char register_name);
+};
+
+#endif // _
\ No newline at end of file

diff -r 000000000000 -r 918a2b064be6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 18 13:46:46 2011 +0000
@@ -0,0 +1,68 @@
+#include "mbed.h"
+#include "ads8320.h"
+
+
+# define SAMPLENRS 7000
+# define SAMPLES_SEC 161364
+# define SAMPLERATE 9600
+
+Serial pc(USBTX, USBRX);
+ads8320 adsx8320(p5,p6,p7,p8);  
+Serial lcd (p28, p27);
+InterruptIn Potmeter(p23);
+DigitalOut led(LED1);
+
+void clear(void);
+void Measure(void);
+unsigned int samples[SAMPLENRS];
+unsigned int average;
+unsigned int sum;
+Timer t;
+
+int main() {
+    Potmeter.rise(&Measure); //if P5 high, then measure
+    while (1) {
+        led = !led;
+        wait(0.25);
+        pc.printf("say something");
+    }
+}
+
+
+
+void Measure() {
+__disable_irq();
+    unsigned int pause = (SAMPLES_SEC/SAMPLERATE) / SAMPLES_SEC;
+    int c=0;
+    clear();
+    lcd.baud(9600);
+    while (1) {
+
+        t.reset();
+        t.start();
+       /* for (int i=0; i < SAMPLENRS; i++) {
+            samples[i] = adsx8320.readTemperature();
+            sum+= samples[i];
+            wait(0.0001041);  //divider 0.0001355
+        }*/
+        pc.printf("waarde is: %u \n\r",adsx8320.readTemperature());
+        t.stop();
+        clear();
+        average = sum/SAMPLENRS;
+        //lcd.printf("gem is %u\n\r", average);
+        //lcd.printf("t: %f \n\r", t.read());
+        sum =0;
+        wait(1);
+        clear();
+        average=0;
+__enable_irq();
+
+    }
+}
+
+void clear(void) {
+    // lcd.putc(0xFE);
+    lcd.putc(0x01);
+    lcd.printf("                \n\r");
+    lcd.printf("                \n\r");
+}
\ No newline at end of file

diff -r 000000000000 -r 918a2b064be6 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Feb 18 13:46:46 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912