From a2cff11cb50dca70fb4869e6ed7188504a398e27 Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Mon, 9 Sep 2024 20:18:14 +0800
Subject: Linker script and a bunch of important fixes.

---
 Makefile | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index da8a267..846d463 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
-CC = avr-gcc
-MCU = atmega328p
-TARGET = inmp
+CC = arm-none-eabi-gcc
+CPU = cortex-m3
+TARGET = due
 
 SRC = main.c
 OBJ = $(SRC:.c=.o)
@@ -8,22 +8,15 @@ OBJ = $(SRC:.c=.o)
 CFLAGS = -std=gnu99
 CFLAGS += -Os
 CFLAGS += -Wall
-CFLAGS += -mmcu=$(MCU)
-CFLAGS += -DBAUD=115200
-CFLAGS += -DF_CPU=16000000UL
-CFLAGS += -ffunction-sections -fdata-sections
+CFLAGS += -mcpu=$(CPU)
+CFLAGS += -mthumb
 
-LDFLAGS = -mmcu=$(MCU)
+LDFLAGS = -mcpu=$(CPU)
 LDFLAGS += -Wl,--gc-sections
 
 HEX_FLAGS = -O ihex
 HEX_FLAGS += -j .text -j .data
 
-AVRDUDE_FLAGS = -p $(MCU)
-AVRDUDE_FLAGS += -c arduino
-AVRDUDE_FLAGS += -P /dev/cuaU0
-AVRDUDE_FLAGS += -D -U
-
 %.o: %.c
 	 $(CC) $(CFLAGS) -c -o $@ $<
 
@@ -31,10 +24,10 @@ elf: $(OBJ)
 	 $(CC) $(LDFLAGS) $(OBJ) -o $(TARGET).elf
 
 hex: elf
-	 avr-objcopy $(HEX_FLAGS) $(TARGET).elf $(TARGET).hex
+	 arm-none-eabi-objcopy $(HEX_FLAGS) $(TARGET).elf $(TARGET).hex
 
-upload: hex
-	 avrdude $(AVRDUDE_FLAGS) flash:w:$(TARGET).hex:i
+#upload: hex
+#     openocd -f openocd-due.cfg -c "program $(TARGET) verify reset exit"
 
 .PHONY: clean
 
-- 
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