lpc111x-isp/: Ben-based in-system programmer (ISP) for NXP LPC111x chips (WIP)

Uses SWUART. This is just a "first contact" skeleton.

lpc111x-isp/Makefile

@@ -0,0 +1,19 @@
+CC = mipsel-openwrt-linux-gcc
+CFLAGS = -g -Wall -O9 -I../libubb/include
+LDFLAGS = -static
+LDLIBS = -L../libubb -lubb
+
+MAIN = lpc111x
+OBJS = lpc111x.o
+
+.PHONY:		all clean spotless
+
+all:		$(MAIN)
+
+$(MAIN):	$(OBJS)
+
+clean:
+		rm -f $(OBJS)
+
+spotless:	clean
+		rm -f $(MAIN)

lpc111x-isp/lpc111x.c

@@ -0,0 +1,105 @@
+/*
+ * lpc111x-isp/lpc111x.c - LPC111x/LPC11Cxx ISP programmer
+ *
+ * Written 2012 by Werner Almesberger
+ * Copyright 2012 Werner Almesberger
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <ubb/ubb.h>
+#include <ubb/swuart.h>
+
+
+#define	TGT_nRESET	UBB_CMD
+#define	TGT_nISP	UBB_DAT1
+#define	TGT_TX		UBB_DAT3
+#define	TGT_RX		UBB_DAT2
+
+#define	HOST_RX		TGT_TX
+#define	HOST_TX		TGT_RX
+
+
+static void dump(uint8_t *s, int len)
+{
+	const uint8_t *end = s+len;
+
+	for (end = s+len; s != end; s++) {
+		if (*s >= ' ' && *s <= '~')
+			printf("%c", *s);
+		else if (*s == 10)
+			printf(s+1 == end ? "\n" : "\\n");
+		else if (*s == 13)
+			;
+		else
+			printf("\\%02o", *s);
+	}
+	if (len && end[-1] != '\n')
+		printf("...\n");
+}
+
+
+static void at_exit(void)
+{
+	ubb_close(0);
+}
+
+
+int main(int argc, char **argv)
+{
+	uint8_t reply[1000];
+	int got;
+
+	if (ubb_open(0) < 0) {
+		perror("ubb_open");
+		exit(1);
+	}
+	atexit(at_exit);
+
+	ubb_power(1);
+
+	usleep(100*1000);
+
+	SET(TGT_nRESET);
+	OUT(TGT_nRESET);
+
+	CLR(TGT_nISP);
+	OUT(TGT_nISP);
+
+	swuart_open(HOST_TX, HOST_RX, 115200);
+
+	CLR(TGT_nRESET);
+	usleep(10);	/* DS Table 9 pg 29 says min 50 ns */
+	SET(TGT_nRESET);
+
+	usleep(5*1000);	/* UM 26.3.1 pg 408 says max 3 ms */
+
+	got = swuart_trx("?", 1, reply, sizeof(reply), 1000, 100);
+	dump(reply, got);
+
+	got = swuart_trx("Synchronized\r\n", 14,
+	    reply, sizeof(reply), 1000, 100);
+	dump(reply, got);
+
+	got = swuart_trx("12000\r\n", 7,
+	    reply, sizeof(reply), 1000, 100);
+	dump(reply, got);
+
+	got = swuart_trx("J\r\n", 7,
+	    reply, sizeof(reply), 1000, 100);
+	dump(reply, got);
+
+	return 0;
+}