Use lowercase and single-char prefix in logs

Replace '[D]' prefix with a single '!' character to reduce log size.
Convert all log messages to lowercase to ensure correct rendering in uppercase on PET 3000.

Author: Senbei64

library/blink65.c

@@ -53,7 +53,7 @@ void delay(uint32_t milliseconds)
 
 uint8_t digitalRead(uint8_t pin)
 {
-    DBG("DR pin %u\n", pin);
+    DBG("dr pin %u\n", pin);
 
     if (pin >= NUM_DIGITAL_PINS)
         return LOW;
@@ -65,7 +65,7 @@ void digitalWrite(uint8_t pin, uint8_t state)
 {
     uint8_t mode; 
 
-    DBG("DW pin:%u state:%u\n", pin, state);
+    DBG("dw pin:%u state:%u\n", pin, state);
 
     if (pin >= NUM_DIGITAL_PINS)
         return;
@@ -83,7 +83,7 @@ void digitalWrite(uint8_t pin, uint8_t state)
 
 void pinMode(uint8_t pin, uint8_t mode)
 {
-    DBG("PM pin:%u mode:%u\n", pin, mode);
+    DBG("pm pin:%u mode:%u\n", pin, mode);
 
     if (pin >= NUM_DIGITAL_PINS)
         return;
@@ -103,7 +103,7 @@ void pinMode(uint8_t pin, uint8_t mode)
 
 void tone(uint8_t pin, uint16_t frequency)
 {
-    DBG("TF pin:%u hz:%u\n", pin, frequency);
+    DBG("tf pin:%u hz:%u\n", pin, frequency);
 
     if (frequency < 10)
         frequency = 10;

library/blink65.h

@@ -35,7 +35,7 @@
 #ifndef DEBUG
 #define DBG(...) 
 #else
-#define DBG(...) printf("[D] " __VA_ARGS__)
+#define DBG(...) printf("!" __VA_ARGS__)
 #endif
 
 

library/c64/c64variant.c

@@ -59,13 +59,13 @@ void initVariant(void)
     if (*(uint8_t *)0x02A6 != 0)
     {
         /* PAL */
-        DBG("IV PAL\n");
+        DBG("iv pal\n");
         variant_clock_hz = CLOCK_PAL;
     }
     else
     {
         /* NTSC */
-        DBG("IV NTSC\n");
+        DBG("iv ntsc\n");
         variant_clock_hz = CLOCK_NTSC;
     }
 
@@ -76,7 +76,7 @@ void initVariant(void)
 
 void noTone(uint8_t pin)
 {
-    DBG("NT pin:%u\n", pin);
+    DBG("nt pin:%u\n", pin);
 
     if (pin != PIN_K && pin != PIN_L)
         return;
@@ -89,7 +89,7 @@ void noTone(uint8_t pin)
 
 void tonePeriod(uint8_t pin, uint16_t period)
 {
-    DBG("TP pin:%u T:%u\n", pin, period);
+    DBG("tp pin:%u t:%u\n", pin, period);
 
     if (pin != PIN_K && pin != PIN_L)
         return;

library/pet/petvariant.c

@@ -59,7 +59,7 @@ void analogWrite(uint8_t pin, uint8_t level)
 {
     uint8_t pattern = 0xFF >> (8 - level * 9 / 255);
 
-    DBG("AW p:%u l:%3u s:$%02X\n", pin, level, pattern);
+    DBG("aw p:%u l:%3u s:$%02x\n", pin, level, pattern);
 
     if (pin != PIN_M)
         return;
@@ -72,7 +72,7 @@ void analogWrite(uint8_t pin, uint8_t level)
 
 void noTone(uint8_t pin)
 {
-    DBG("NT pin:%u\n", pin);
+    DBG("nt pin:%u\n", pin);
 
     if (pin != PIN_M)
         return;
@@ -85,7 +85,7 @@ void tonePeriod(uint8_t pin, uint16_t period)
 {
     uint8_t pattern;
 
-    DBG("TP pin:%u T:%u\n", pin, period);
+    DBG("tp pin:%u t:%u\n", pin, period);
 
     if (pin != PIN_M)
         return;
@@ -118,7 +118,7 @@ void tonePeriod(uint8_t pin, uint16_t period)
     VIA.t2_lo = (uint8_t)(period - 2);
     VIA.sr = pattern;
 
-    DBG("TP sr:$%02X T2:%u\n", pattern, period - 2);
+    DBG("tp sr:$%02X t2:%u\n", pattern, period - 2);
 }
 
 void updateBuiltinLed(uint8_t mode, uint8_t state)

library/vic20/vic20variant.c

@@ -62,13 +62,13 @@ void initVariant(void)
     if (*(int8_t *)0xE475 < 0)
     {
         /* PAL */
-        DBG("IV PAL\n");
+        DBG("iv pal\n");
         variant_clock_hz = CLOCK_PAL;
     }
     else
     {
         /* NTSC */
-        DBG("IV NTSC\n");
+        DBG("iv ntsc\n");
         variant_clock_hz = CLOCK_NTSC;
     }
 }
@@ -77,7 +77,7 @@ void analogWrite(uint8_t pin, uint8_t level)
 {
     uint8_t pattern = 0xFF >> (8 - level * 9 / 255);
 
-    DBG("AW p:%u l:%3u s:$%02X\n", pin, level, pattern);
+    DBG("aw p:%u l:%3u s:$%02x\n", pin, level, pattern);
 
     if (pin != PIN_M)
         return;
@@ -90,7 +90,7 @@ void analogWrite(uint8_t pin, uint8_t level)
 
 void noTone(uint8_t pin)
 {
-    DBG("NT pin:%u\n", pin);
+    DBG("nt pin:%u\n", pin);
 
     if (pin == PIN_L)
     {
@@ -109,7 +109,7 @@ void noTone(uint8_t pin)
 
 void tonePeriod(uint8_t pin, uint16_t period)
 {
-    DBG("TP pin:%u T:%u\n", pin, period);
+    DBG("tp pin:%u t:%u\n", pin, period);
 
     if (pin == PIN_L)
     {
@@ -151,7 +151,7 @@ void tonePeriod(uint8_t pin, uint16_t period)
         VIA1.t2_lo = (uint8_t)(period - 2);
         VIA1.sr = pattern;
 
-        DBG("TP sr:$%02X T2:%u\n", pattern, period);
+        DBG("tp sr:$%02X t2:%u\n", pattern, period);
     }
 }