128DB32

GPIO/128DB32/ring.128DB32.c

+//
+// ring.128DB32.c
+//
+// 128DB32 ring oscillator test
+//
+// Neil Gershenfeld 1/9/21
+//
+// This work may be reproduced, modified, distributed,
+// performed, and displayed for any purpose, but must
+// acknowledge this project. Copyright is retained and
+// must be preserved. The work is provided as is; no
+// warranty is provided, and users accept all liability.
+//
+
+#include <avr/io.h>
+
+int main(void) {
+   CPU_CCP = CCP_IOREG_gc; // unprotect clock
+   CLKCTRL.OSCHFCTRLA = 9 << 2; // select 24 MHz clock
+   PORTD.DIRSET = PIN5_bm;
+   while (1) {
+      if (VPORTD.IN & PIN6_bm)
+            VPORTD.OUT &= ~PIN5_bm;
+         else
+            VPORTD.OUT |= PIN5_bm;
+      }
+   }

GPIO/128DB32/ring.128DB32.make

+PROJECT=ring.128DB32
+SOURCES=$(PROJECT).c
+DEVICE = avr128db32
+MMCU=$(DEVICE)
+F_CPU = 24000000
+PACK = path to AVR-Dx_DFP atpack goes here
+PORT = /dev/ttyUSB1
+BAUD = 9600
+
+CFLAGS=-mmcu=$(MMCU) -Wall -Os -DF_CPU=$(F_CPU)
+
+$(PROJECT).hex: $(PROJECT).out
+	avr-objcopy -O ihex $(PROJECT).out $(PROJECT).hex;\
+	avr-size --mcu=$(MMCU) --format=avr $(PROJECT).out
+ 
+$(PROJECT).out: $(SOURCES)
+	avr-gcc $(CFLAGS) -I./ -I$(PACK)/include -B$(PACK)/gcc/dev/$(MMCU) -o $(PROJECT).out $(SOURCES)
+
+pyupdi: $(PROJECT).hex
+	pyupdi -d $(DEVICE) -c $(PORT) -b $(BAUD) -v -f $(PROJECT).hex
+

index.html

@@ -88,6 +88,13 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
 <td>November, 2020</td>
 </tr>
 
+<tr>
+<td>2.172</td>
+<td>AVR128DB32</td>
+<td><a href=GPIO/128DB32/ring.128DB32.c>VPORT</a> (<a href=GPIO/128DB32/ring.128DB32.make>Makefile</a>)</td>
+<td>December, 2021</td>
+</tr>
+
 <tr>
 <td>1.818</td>
 <td>ATtiny412</td>