Diff: main.cpp

Revision:

0:8096151ff6c6

diff -r 000000000000 -r 8096151ff6c6 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Oct 30 08:01:10 2010 +0000
@@ -0,0 +1,183 @@
+
+//
+// Thermo Sensor(TMP102 & LM61BIZ) test code
+//
+// ported code from Arduino
+// you can see the difference between mbed and Arduino in the code.
+
+// 2010/10/30
+// written by:xshige
+
+/*
+
+mbed Case:
+ Wiring Info for TMP102
+ module side | mbed side
+ GND --------- GND
+ SCL --------- p10
+ SDA --------- p9
+ V+  --------- +3.3V
+ ALT --------- NC
+ ADD0 -------- GND
+
+ Wring Info ofr LM61BIZ
+ sensor side | mbed side
+ +Vs --------- +5V or +3.3V
+ Vout--------- p20 (analog input)
+ GND --------- GND
+
+//--------------------------------
+
+Arduino Case:
+ Wiring Info for TMP102
+ module side | Arduino side
+ GND --------- GND
+ SCL --------- A5
+ SDA --------- A4
+ V+  --------- +3.3V
+ ALT --------- NC
+ ADD0 -------- GND
+
+ Wring Info ofr LM61BIZ
+ sensor side | Arduino side
+ +Vs --------- +5V or +3.3V
+ Vout--------- A3 (analog input)
+ GND --------- GND
+
+Datasheet:
+http://www.sparkfun.com/datasheets/Sensors/Temperature/tmp102.pdf
+http://www.national.com/ds/LM/LM61.pdf
+
+*/
+
+#define MBED
+
+#ifdef MBED
+#include "mbed.h"
+#else
+#include <Wire.h>
+#endif
+
+#ifdef MBED
+I2C i2c(p9, p10);        // sda, scl
+Serial pc(USBTX, USBRX); // tx, rx
+char cmd[2]; // command for I2C
+#endif
+
+// setup for TMP102
+#ifdef MBED
+#define TEMP_REG 0x0
+int tmp102 = 0x90; // with ADD0 tied to ground
+// important note: (Arduino_Address<<4)==(mbed_Address)
+#else
+#define TEMP_REG 0b00000000
+int tmp102 = 0b1001000;  // with ADD0 tied to ground
+#endif
+
+// setup for LM61BIZ
+#ifdef MBED
+AnalogIn LM61pin(p20); // select analog input
+#else
+int LM61Pin = 3;    // select analog input
+#endif
+
+void setPR(int reg) {
+#ifndef MBED // not MBED
+  Wire.beginTransmission(tmp102);
+  Wire.send(reg);
+  Wire.endTransmission();
+#endif
+}
+
+int getReg() {
+  unsigned char lo, hi;
+#ifdef MBED
+    cmd[0] = TEMP_REG; i2c.write(tmp102, cmd, 1); // set temp?reg
+    i2c.read(tmp102, cmd, 2); // read the two-byte echo result
+    hi = cmd[0]; lo = cmd[1];
+#else
+  Wire.requestFrom(tmp102, 2);
+  hi = Wire.receive();
+  lo = Wire.receive();
+#endif
+  return (hi << 8) + lo;
+}
+
+void setup()   {
+#ifndef MBED // not MBED
+  Serial.begin(9600);    
+  Wire.begin();
+  setPR(TEMP_REG);
+#endif
+}
+
+void show_TMP102_temp() {
+  int temp_reg = getReg();
+  temp_reg >>= 4;
+
+  float temp_C = temp_reg * 0.0625;
+  float temp_F = (temp_C * 9 / 5) + 32;
+
+#ifdef MBED
+  printf("TMP102: %2.1f degree C\r\n",temp_C);
+  printf("TMP102: %2.1f degree F\r\n",temp_F);
+#else
+  Serial.print("TMP102: ");
+  Serial.print(temp_C);
+  Serial.println(" degree C  ");
+  Serial.print(temp_F);
+  Serial.println("\xdf""F  ");
+#endif
+}
+
+void show_LM61_temp() {
+   // read the value from the sensor:
+#ifdef MBED
+  float value = 3.3*LM61pin.read_u16()/0xFFFF;  
+  // in mbed, input range is 0 thru 3.3V
+#else   
+  float value = 5.0*analogRead(LM61Pin)/1023.0; 
+  // in Arduino, input range is 0 thru 5V in many case 
+#endif
+
+  // get degree C form LM61BIZ value
+  float LM61degree=(value-0.6)/0.01;
+
+#ifdef MBED
+  printf("LM61:   %2.1f degree C\r\n",LM61degree);
+#else
+  Serial.print("LM61:   ");
+  Serial.print(LM61degree);
+  Serial.println(" degree C");
+#endif
+}
+
+void loop() {
+  show_TMP102_temp();
+  show_LM61_temp();
+#ifdef MBED
+  printf("\r\n"); 
+#endif
+}
+
+#ifdef MBED
+void init()
+{
+  // make debug port Fast
+//    pc.baud(9600);
+    pc.baud(115200);
+//  pc.baud(230400);
+}
+
+int main(void)
+{
+    init();
+ 
+    setup();
+ 
+    for (;;)
+        loop();
+ 
+    return 0;
+}
+#endif
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