preliminary adt7470 support

adt7470.ino

@@ -0,0 +1,210 @@
+
+/*
+ADT7470 address selection
+FOR 7470's PIN 11:
+High (10k to Vcc)   = 010 1111 (0x5E left justified or 0x2F right justified)
+Low (10k to GND)    = 010 1100 (0x58 left justified or 0x2C right justified)
+Float (none)        = 010 1110 (0x5C left justified or 0x2E right justified)
+*/
+
+#include <Wire.h>
+
+#DEFINE ADT_ADDR 0x58
+#DEFINE ADT_ADDR_LOW   0x5E
+#DEFINE ADT_ADDR_FLOAT 0x58
+#DEFINE ADT_ADDR_HIGH  0x5C
+//#DEFINE PIN_I2C  10
+#DEFINE PIN_FULL 11
+#DEFINE START_FULL 1
+#DEFINE START_FULL_DURATION 1000
+
+//how many sensors do we have?
+byte temp_numsensors = 10;
+//when was the temp taken?
+unsigned long temp_millis = 0;
+
+unsigned long temp_age () {
+    return millis() - temp_millis;
+}
+//start measurements
+//wait 200ms per sensor in chain
+void temp_measure(bool delay = true) {
+    //set register address 0x40 Bit[7] = 1
+    byte config = conf_get1();
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x40));
+
+    if (enable) {
+        bitSet(config,7);
+    }
+    else {
+        bitClear(config,7);
+    }
+    Write.write(config);
+    Wire.endTransmission();
+    //wait for 200ms * temp_numsensors
+    if (delay) {
+        delay(200*temp_numsensors);
+        temp_millis = millis();
+    }
+    else
+    {
+        temp_millis = millis() + 200*temp_numsensors;
+    }
+    //temps are ready
+}
+//get temp of specific
+byte temp_get (byte sensor) {
+    //sensor 0 at 0x20
+    //sensor 9 at 0x29
+    if (sensor <= 9)
+    {
+        Wire.beginTransmission(byte(ADT_ADDR));
+        Wire.write(byte(0x20)+sensor);
+        Wire.endTransmission();
+        Wire.requestFrom(byte(ADT_ADDR),1);
+        if (1 == Wire.available())
+            return Wire.read();
+    }
+    return 0;
+}
+void temp_getmax (void) {
+    //read max TMP05 temperature
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x78));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    return 0;
+}
+
+void fans_full_speed (bool stuck) {
+    //pull PIN_FULL low until cleared
+}
+
+void fans_full_speed_time (int ms) {
+    //pull PIN_FULL low for ms
+}
+int fans_rpm (byte fan) {
+    //page 23+24
+    //tach 0 low at  0x2A
+    //tach 0 high at 0x2B
+    if (fan <= 3)
+    {
+        Wire.beginTransmission(byte(ADT_ADDR));
+        Wire.write(byte(0x2A)+(fan*2));
+        Wire.endTransmission();
+        Wire.requestFrom(byte(ADT_ADDR),2);
+        if (2 == Wire.available())
+            return ((unsigned int)Wire.read() << 8 ) + Wire.read();
+    }
+    return 0;
+}
+void fans_setpct (int fan, byte pct) {
+    fans_set(fan,pct/0.39);
+}
+void fans_set (int fan, byte duty) {
+    //page 25
+    if (fan <= 3)
+    {
+        Wire.beginTransmission(byte(ADT_ADDR));
+        Wire.write(byte(0x32) + fan);
+        Wire.write(duty);
+        Wire.endTransmission();
+    }
+}
+//----configuration----
+//get config register 1, 0x40
+byte conf_get1 () {
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x40));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    else
+        return 0;
+}
+//get config register 2, 0x74
+byte conf_get2 () {
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x74));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    else
+        return 0;
+}
+
+//page 30 + 36
+void conf_monitor (bool enable) {
+    //set 1 in bit0 of register 1 (0x40) to monitor all tachs and temps
+    //typo? - set 0 in bit7??? of register 1 (0x40) to monitor all tachs and temps (pg7)
+    byte config = conf_get1();
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x40));
+
+    if (enable) {
+        bitSet(config,0);
+    }
+    else {
+        bitClear(config,0); //need verify cuz possible datasheet typo
+    }
+    Write.write(config);
+    Wire.endTransmission();
+}
+void conf_lowspeed (){}
+void conf_measure_tach (int tach, bool enable) {
+    //page 36
+}
+
+//----device----
+byte device_id () {
+    //get 0x3d, should be 0x70
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x3d));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    else
+        return 0;
+}
+byte device_company () {
+    //get 0x3e, should be 0x41
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x3e));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    else
+        return 0;
+}
+byte device_revision () {
+    //get 0x3f
+    Wire.beginTransmission(byte(ADT_ADDR));
+    Wire.write(byte(0x3f));
+    Wire.endTransmission();
+    Wire.requestFrom(byte(ADT_ADDR),1);
+    if (1 == Wire.available())
+        return Wire.read();
+    else
+        return 0;
+}
+//----GPIO STUFF----
+//page 8
+//---------
+
+void setup(void){
+    Wire.begin(); //join i2c as master
+    //if start full speed fans
+
+}
+
+void loop(void){
+
+
+}