Print board signatures and temperature readings

strandstring/strandstring.pde

@@ -105,6 +105,21 @@ void put_char(volatile unsigned char *port, unsigned char pin, char txchar) {
     interrupts();
 }
 
+void put_hex(volatile unsigned char *port, unsigned char pin, uint8_t hex_char) {
+    uint8_t val = (hex_char & (0b1111u << 4)) >> 4;
+    if (val < 10) {
+        put_char(port, pin, '0' + val);
+    } else {
+        put_char(port, pin, 'A' + (val - 10));
+    }
+    val = hex_char & 0b1111u;
+    if (val < 10) {
+        put_char(port, pin, '0' + val);
+    } else {
+        put_char(port, pin, 'A' + (val - 10));
+    }
+}
+
 void put_string(volatile unsigned char *port, unsigned char pin, char *str) {
     //
     // print a null-terminated string
@@ -117,7 +132,18 @@ void put_string(volatile unsigned char *port, unsigned char pin, char *str) {
     } while (str[index] != 0);
 }
 
-OneWire  ds(11);  // on pin 10 (a 4.7K resistor is necessary)
+void put_line(volatile unsigned char *port, unsigned char pin, char *str) {
+    put_string(port, pin, str);
+    put_char(port, pin, '\n');
+}
+
+void put_float(volatile unsigned char *port, unsigned char pin, float x) {
+    static char buffer[10];
+    dtostrf(x, 8, 2, buffer);
+    put_string(port, pin, buffer);
+}
+
+OneWire  ds(2);  // on PA2 (a 4.7K resistor is necessary)
 
 void setup(void) {
     // Set clock divider to 1.
@@ -148,9 +174,6 @@ void loop(void) {
         PORTB |= led_pin;
         //put_char(&serial_port, serial_pin_out, '1');
     }
-    put_string(&serial_port, serial_pin_out, "hello world");
-    delay(500);
-    return;
 
     byte i;
     byte present = 0;
@@ -160,7 +183,7 @@ void loop(void) {
     float celsius, fahrenheit;
 
     if (!ds.search(addr)) {
-        put_string(&serial_port, serial_pin_out, "No more addresses.");
+        put_line(&serial_port, serial_pin_out, "No more addresses.");
         ds.reset_search();
         delay(250);
         return;
@@ -170,33 +193,31 @@ void loop(void) {
     put_string(&serial_port, serial_pin_out, "ROM=");
     for (i = 0; i < 8; i++) {
         put_char(&serial_port, serial_pin_out, ' ');
-        //Serial.print(addr[i], HEX);
-        put_string(&serial_port, serial_pin_out, "xxx");
-        //put_string(&serial_port, serial_pin_out, addr[i])
+        put_hex(&serial_port, serial_pin_out, addr[i]);
     }
+    put_char(&serial_port, serial_pin_out, '\n');
 
     if (OneWire::crc8(addr, 7) != addr[7]) {
-        put_string(&serial_port, serial_pin_out, "CRC is not valid!");
+        put_line(&serial_port, serial_pin_out, "CRC is not valid!");
         return;
     }
-    //Serial.println();
 
     // the first ROM byte indicates which chip
     switch (addr[0]) {
         case 0x10:
-        put_string(&serial_port, serial_pin_out, "  Chip = DS18S20");  // or old DS1820
+        put_line(&serial_port, serial_pin_out, "  Chip = DS18S20");  // or old DS1820
         type_s = 1;
         break;
         case 0x28:
-        put_string(&serial_port, serial_pin_out, "  Chip = DS18B20");
+        put_line(&serial_port, serial_pin_out, "  Chip = DS18B20");
         type_s = 0;
         break;
         case 0x22:
-        put_string(&serial_port, serial_pin_out, "  Chip = DS1822");
+        put_line(&serial_port, serial_pin_out, "  Chip = DS1822");
         type_s = 0;
         break;
         default:
-        put_string(&serial_port, serial_pin_out, "Device is not a DS18x20 family device.");
+        put_line(&serial_port, serial_pin_out, "Device is not a DS18x20 family device.");
         return;
     }
 
@@ -212,16 +233,14 @@ void loop(void) {
     ds.write(0xBE);         // Read Scratchpad
 
     put_string(&serial_port, serial_pin_out, "  Data = ");
-    put_string(&serial_port, serial_pin_out, "xxx");
-    //put_string(&serial_port, serial_pin_out, present, HEX);
-    put_string(&serial_port, serial_pin_out, " ");
+    put_hex(&serial_port, serial_pin_out, present);
+    put_char(&serial_port, serial_pin_out, ' ');
     for ( i = 0; i < 9; i++) {           // we need 9 bytes
         data[i] = ds.read();
-        //Serial.print(data[i], HEX);
-        put_string(&serial_port, serial_pin_out, " thing");
+        put_hex(&serial_port, serial_pin_out, data[i]);
     }
     put_string(&serial_port, serial_pin_out, " CRC=");
-    //put_string(&serial_port, serial_pin_out, OneWire::crc8(data, 8), HEX);
+    put_hex(&serial_port, serial_pin_out, OneWire::crc8(data, 8));
 
     // Convert the data to actual temperature
     // because the result is a 16 bit signed integer, it should
@@ -245,8 +264,8 @@ void loop(void) {
     celsius = (float)raw / 16.0;
     fahrenheit = celsius * 1.8 + 32.0;
     put_string(&serial_port, serial_pin_out, "  Temperature = ");
-    //put_string(&serial_port, serial_pin_out, celsius);
+    put_float(&serial_port, serial_pin_out, celsius);
     put_string(&serial_port, serial_pin_out, " Celsius, ");
-    //put_string(&serial_port, serial_pin_out, fahrenheit);
-    put_string(&serial_port, serial_pin_out, " Fahrenheit");
+    put_float(&serial_port, serial_pin_out, fahrenheit);
+    put_line(&serial_port, serial_pin_out, " Fahrenheit");
 }