Diff: main.cpp

Revision:

2:c036ba032972

Parent:

1:9755b5a98ffb

Child:

4:6e0a2e9fe23a

--- a/main.cpp	Sat May 24 14:53:11 2014 +0000
+++ b/main.cpp	Sun Nov 09 12:03:40 2014 +0000
@@ -1,14 +1,208 @@
 #include "mbed.h"
+#include "rtos.h"
+#include "LPS331_I2C.h"
+#include "AM2321.h"
 
-// use LM35D thermo senser IC
-AnalogIn thermo_ic(p20);
+//for debug
+DigitalOut led1(LED1, 0);
+DigitalOut led2(LED2, 0);
+DigitalOut led3(LED3, 0);
+DigitalOut led4(LED4, 0);
 Serial pc(USBTX, USBRX);
 
-int main() {
-    while(1) {
-        //0.0V <= Vout <= 1.0V at 0C to 100C
-        float temperature = thermo_ic.read()*3.3*100;
-        pc.printf("temperature=%f\n", temperature);
-        wait(1);
+// for ethernet led
+DigitalIn lnk(P1_25);
+DigitalIn spd(P1_26);
+DigitalOut speed(p29);
+DigitalOut link(p30);
+
+void flip(void const *args) {
+    speed = !spd;
+    link = !lnk;
+}
+
+// for LPS331
+LPS331_I2C lps331(p9, p10, LPS331_I2C_SA0_HIGH);
+
+void setup_lps331()
+{   
+    if(lps331.isAvailable()) {
+        pc.printf("LPS331 is available!\r\n");
+    } else {
+        pc.printf("LPS331 is unavailable!\r\n");
+    }
+    
+    lps331.setResolution(LPS331_I2C_PRESSURE_AVG_512, LPS331_I2C_TEMP_AVG_128);
+    lps331.setDataRate(LPS331_I2C_DATARATE_7HZ);
+    lps331.setActive(true);
+}
+
+float pressure = 0;
+
+void update_pressure()
+{
+    led2 = !led2;
+    pressure = lps331.getPressure();
+    pc.printf("press:%f\r\n", pressure);
+}
+
+// for AM2321
+AM2321 am2321(p9, p10);
+
+float temperature = 0;
+float humidity = 0;
+
+void update_temperature_and_humidity()
+{
+    if(am2321.poll())
+    {
+        led3 = !led3;
+        temperature = am2321.getTemperature();
+        humidity = am2321.getHumidity();
+        pc.printf("temp:%.1f,humid:%.1f\r\n", temperature, humidity);
+    }
+}
+
+// for display mode
+int mode = 1; // 1: temp, 2: humid, 3: press
+void next_mode(void const *args)
+{
+    mode++;
+    if(mode > 3)
+    {
+        mode = 1;
     }
 }
+
+// for VFD
+const int ANODE_PINS_NUM = 9;
+DigitalOut anode_pins[ANODE_PINS_NUM] = {
+    DigitalOut(p28),
+    DigitalOut(p27),
+    DigitalOut(p26),
+    DigitalOut(p25),
+    DigitalOut(p24),
+    DigitalOut(p23),
+    DigitalOut(p22),
+    DigitalOut(p16),
+    DigitalOut(p21)
+};
+
+const int CATHODE_PINS_NUM = 4;
+DigitalOut cathode_pins[CATHODE_PINS_NUM] = {
+    DigitalOut(p17),
+    DigitalOut(p18),
+    DigitalOut(p19),
+    DigitalOut(p20)
+};
+
+const int DOT_PIN_POS = 8;
+const int VFD_LIGHT_MAP[][ANODE_PINS_NUM] = {
+    {1, 1, 1, 1, 1, 1, 0, 0, 0}, // 0
+    {0, 1, 1, 0, 0, 0, 0, 0, 0}, // 1
+    {1, 1, 0, 1, 1, 0, 1, 0, 0}, // 2
+    {1, 1, 1, 1, 0, 0, 1, 0, 0}, // 3
+    {0, 1, 1, 0, 0, 1, 1, 1, 0}, // 4
+    {1, 0, 1, 1, 0, 1, 1, 0, 0}, // 5
+    {1, 0, 1, 1, 1, 1, 1, 0, 0}, // 6
+    {1, 1, 1, 0, 0, 0, 0, 0, 0}, // 7
+    {1, 1, 1, 1, 1, 1, 1, 0, 0}, // 8
+    {1, 1, 1, 1, 0, 1, 1, 0, 0}, // 9
+    {1, 1, 1, 0, 1, 1, 1, 0, 0}, // A
+    {0, 0, 1, 1, 1, 1, 1, 0, 0}, // B
+    {1, 0, 0, 1, 1, 1, 0, 0, 0}, // C
+    {0, 1, 1, 1, 1, 0, 1, 0, 0}, // D
+    {1, 0, 0, 1, 1, 1, 1, 0, 0}, // E
+    {1, 0, 0, 0, 1, 1, 1, 0, 0}, // F
+    {1, 1, 0, 0, 1, 1, 1, 0, 0}, // P
+    {0, 0, 1, 0, 1, 1, 1, 0, 0}  // h
+};
+
+void vfd_display_number(int pos, int number, int add_dot)
+{
+    cathode_pins[pos] = 1;
+    for(int i = 0; i < DOT_PIN_POS; i++) {
+        anode_pins[i] = VFD_LIGHT_MAP[number][i];
+    }
+    anode_pins[DOT_PIN_POS] = add_dot;
+    Thread::wait(2);
+    for(int i = 0; i < ANODE_PINS_NUM; i++) {
+        anode_pins[i] = 0;
+    }
+    cathode_pins[pos] = 0;
+}
+
+void vfd_display_numbers(void const *args)
+{
+    int ones_place, tens_place, hundreds_place, thousands_place, use_dot;
+    int display_number;
+    led1 = !led1;
+    
+    switch(mode)
+    {
+        case 1:
+            display_number = (int)(temperature * 10);
+            ones_place = 12;
+            tens_place = display_number % 10;
+            thousands_place = (int)(display_number / 100);
+            hundreds_place = (int)((display_number - thousands_place * 100 - tens_place) / 10);
+            use_dot = 1;
+            break;
+        case 2:
+            display_number = (int)(humidity * 10);
+            ones_place = 16;
+            tens_place = display_number % 10;
+            thousands_place = (int)(display_number / 100);
+            hundreds_place = (int)((display_number - thousands_place * 100 - tens_place) / 10);
+            use_dot = 1;
+            break;
+        default:
+            display_number = (int)pressure;
+            if(display_number < 1000)
+            {
+                ones_place = 17;
+                tens_place = display_number % 10;
+                thousands_place = (int)(display_number / 100);
+                hundreds_place = (int)((display_number - thousands_place * 100 - tens_place) / 10);
+            }
+            else
+            {
+                ones_place = display_number % 10;
+                thousands_place = (int)(display_number / 1000);
+                hundreds_place = (int)((display_number - thousands_place * 1000) / 100);
+                tens_place = (int)((display_number - thousands_place * 1000 - hundreds_place * 100) / 10);
+            }
+            use_dot = 0;
+    }
+
+    vfd_display_number(3, thousands_place, 0);
+    vfd_display_number(2, hundreds_place, use_dot);
+    vfd_display_number(1, tens_place, 0);
+    vfd_display_number(0, ones_place, 0);
+}
+
+int main()
+{
+    // start ethernet
+    RtosTimer flipper(flip, osTimerPeriodic, NULL);
+    flipper.start(50);
+
+    // start auto mode change
+    RtosTimer mode_changer(next_mode, osTimerPeriodic, NULL);
+    mode_changer.start(7000);
+
+    // start vfd
+    RtosTimer vfd_timer(vfd_display_numbers, osTimerPeriodic, NULL);
+    vfd_timer.start(16); //60fps
+    
+    // start LPS331
+    setup_lps331();
+    Thread::wait(2000);
+
+    while(1) {
+        update_pressure();
+        update_temperature_and_humidity();
+        
+        Thread::wait(1000);
+    }
+}