Essential functionality: read / write / initialize

Makefile

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+SOURCES=$(wildcard *.c)
+OBJECTS=$(SOURCES:.c=.o)
+PROGNAME=minipro
+TESTS=$(wildcard tests/test_*.c);
+OBJCOPY=objcopy
+
+CFLAGS = `pkg-config --cflags libusb-1.0` -g -O0
+LIBS = `pkg-config --libs libusb-1.0`
+
+all: $(OBJECTS)
+	$(CC) $(LIBS) $(OBJECTS) -o $(PROGNAME)
+
+clean:
+	rm -f $(OBJECTS) $(PROGNAME)
+
+test: $(TESTS:.c=.stamp)
+	$(CC) -c -I. $< $(CFLAGS) -DTEST -o $(<:.c=.o)
+	$(OBJCOPY) --weaken $(<:.c=.o)
+	$(CC) $(LIBS) $(OBJECTS) $(<:.c=.o) -o $(<:.c=)

byte_utils.c

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+#include "byte_utils.h"
+
+void format_int(unsigned char *out, unsigned int in, unsigned char length, unsigned char endianess) {
+	int i, idx;
+	for(i = 0; i < length; i++) {
+		idx = endianess == MP_LITTLE_ENDIAN ? i : length - 1 - i;
+		out[i] = (in & 0xFF << idx*8) >> idx*8;
+	}
+}
+
+int load_int(unsigned char *buf, unsigned char length, unsigned char endianess) {
+	int i, idx, result = 0;
+	for(i = 0; i < length; i++) {
+		idx = endianess == MP_LITTLE_ENDIAN ? i : length - 1 - i;
+		result |= (buf[i] << idx*8);
+	}
+	return(result);
+}

byte_utils.h

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+#ifndef __BYTE_UTILS_H
+#define __BYTE_UTILS_H
+
+#define MP_LITTLE_ENDIAN 0
+#define MP_BIG_ENDIAN 1
+
+void format_int(unsigned char *out, unsigned int in, unsigned char length, unsigned char endianess);
+int load_int(unsigned char *buf, unsigned char length, unsigned char endianess);
+
+#endif

database.c

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+#include "database.h"
+#include <string.h>
+
+device_t devices[] = {
+	#include "devices.h"
+	{ .name = NULL },
+};
+
+device_t *get_device_by_name(const char *name) {
+	device_t *device;
+	for(device = &(devices[0]); device[0].name; device = &(device[1])) {
+		if(!strcmp(name, device->name))
+			return(device);
+	}
+}

database.h

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+#ifndef __DATABASE_H
+#define __DATABASE_H
+
+typedef struct device {
+	const char *name;
+	unsigned int protocol_id;
+	unsigned int variant;
+	unsigned int addressing_mode;
+	unsigned int read_buffer_size;
+	unsigned int write_buffer_size;
+	enum { BYTE, WORD, BIT } word_size;
+
+	unsigned int code_memory_size; // Presenting for every device	
+	unsigned int data_memory_size; // Usually MCU's EEPROM
+	unsigned int data_memory2_size;
+	unsigned int chip_id; // A vendor-specific chip ID (i.e. 0x1E9502 for ATMEGA48)
+	unsigned int chip_id_bytes_count : 3;
+	unsigned int opts1;
+	unsigned int opts2;
+	unsigned int opts3;
+	unsigned int opts4;
+	unsigned int package_details; // pins count or image ID for some devices
+	unsigned int write_unlock;
+	void *config;
+} device_t;
+
+extern device_t devices[];
+
+device_t *get_device_by_name(const char *name);
+
+#endif