X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=ccdbg-io.c;h=c69fc0d816751172b190393a96de95bbc047f83d;hp=e72ffbf08ca9a6a6be91270a17b76227a7e6a67e;hb=5df84df7cd6a31527dcfd11030f00ef9d8abf170;hpb=01cb2799875e086ee6096627c058ee235bbc33d5

diff --git a/ccdbg-io.c b/ccdbg-io.c
index e72ffbf0..c69fc0d8 100644
--- a/ccdbg-io.c
+++ b/ccdbg-io.c
@@ -24,6 +24,12 @@ ccdbg_quarter_clock(struct ccdbg *dbg)
 	usleep(CC_CLOCK_US / 4);
 }
 
+void
+ccdbg_half_clock(struct ccdbg *dbg)
+{
+	usleep(CC_CLOCK_US / 2);
+}
+
 struct ccdbg *
 ccdbg_open(char *file)
 {
@@ -34,6 +40,8 @@ ccdbg_open(char *file)
 		perror("calloc");
 		return NULL;
 	}
+	dbg->clock = 1;
+#ifdef USE_KERNEL
 	dbg->fd = open(file, 2);
 	if (dbg->fd < 0) {
 		perror(file);
@@ -41,103 +49,165 @@ ccdbg_open(char *file)
 		return NULL;
 	}
 	cccp_init(dbg);
+	cccp_write(dbg, CC_CLOCK, CC_CLOCK);
+#else
+	cp_usb_init(dbg);
+#endif
+	dbg->clock = 1;
 	return dbg;
 }
 
 void
 ccdbg_close(struct ccdbg *dbg)
 {
+#if USE_KERNEL
 	cccp_fini(dbg);
 	close (dbg->fd);
+#else
+	cp_usb_fini(dbg);
+#endif
 	free (dbg);
 }
 
-void
-ccdbg_clock_1_0(struct ccdbg *dbg)
+int
+ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
 {
-	ccdbg_quarter_clock(dbg);
-	assert(dbg->clock == 1);
-	cccp_write(dbg, CC_CLOCK, 0);
-	dbg->clock = 0;
-	ccdbg_quarter_clock(dbg);
+#if USE_KERNEL
+	return cccp_write(dbg, mask, value);
+#else
+	cp_usb_write(dbg, mask, value);
+	return 0;
+#endif
 }
 
+uint8_t
+ccdbg_read(struct ccdbg *dbg)
+{
+#if USE_KERNEL
+	return cccp_read_all(dbg);
+#else
+	return cp_usb_read(dbg);
+#endif
+}
+
+static char
+is_bit(uint8_t get, uint8_t mask, char on, uint8_t bit)
+{
+	if (mask&bit) {
+		if (get&bit)
+			return on;
+		else
+			return '.';
+	} else
+		return '-';
+}
 void
-ccdbg_clock_0_1(struct ccdbg *dbg)
+ccdbg_print(char *format, uint8_t mask, uint8_t set)
 {
-	ccdbg_quarter_clock(dbg);
-	assert(dbg->clock == 0);
-	cccp_write(dbg, CC_CLOCK, CC_CLOCK);
-	dbg->clock = 1;
-	ccdbg_quarter_clock(dbg);
+	ccdbg_debug (CC_DEBUG_BITBANG, format,
+		     is_bit(set, mask, 'C', CC_CLOCK),
+		     is_bit(set, mask, 'D', CC_DATA),
+		     is_bit(set, mask, 'R', CC_RESET_N));
 }
 
-/*
- * By convention, every macro function is entered with dbg->clock == 1
- */
+void
+ccdbg_send(struct ccdbg *dbg, uint8_t mask, uint8_t set)
+{
+	ccdbg_write(dbg, mask, set);
+	ccdbg_print("%c %c %c\n", mask, set);
+	ccdbg_half_clock(dbg);
+}
 
 void
-ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit)
+ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit)
 {
-	ccdbg_clock_1_0(dbg);
-	cccp_write(dbg, CC_DATA, bit ? CC_DATA : 0);
-	ccdbg_clock_0_1(dbg);
+	if (bit) bit = CC_DATA;
+	ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|bit|CC_RESET_N);
+	ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N,          bit|CC_RESET_N);
 }
 
 void
-ccdbg_write_byte(struct ccdbg *dbg, uint8_t byte)
+ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte)
 {
-	int	bit;
+	int bit;
+	ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Send Byte 0x%02x\n#\n", byte);
+	for (bit = 7; bit >= 0; bit--) {
+		ccdbg_send_bit(dbg, (byte >> bit) & 1);
+		if (bit == 3)
+			ccdbg_debug(CC_DEBUG_BITBANG, "\n");
+	}
+}
 
-	for (bit = 7; bit >= 0; bit--)
-		ccdbg_write_bit(dbg, (byte >> bit) & 1);
+void
+ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+	while (nbytes--)
+		ccdbg_send_byte(dbg, *bytes++);
 }
 
 uint8_t
-ccdbg_read_bit(struct ccdbg *dbg)
+ccdbg_recv_bit(struct ccdbg *dbg, int first)
 {
-	uint8_t	data;
+	uint8_t mask = first ? CC_DATA : 0;
+	uint8_t read;
 
-	ccdbg_clock_1_0(dbg);
-	data = cccp_read(dbg, CC_DATA);
-	ccdbg_clock_0_1(dbg);
-	return data ? 1 : 0;
+	ccdbg_send(dbg, CC_CLOCK|mask|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+	read = ccdbg_read(dbg);
+	ccdbg_send(dbg, CC_CLOCK|     CC_RESET_N,                  CC_RESET_N);
+	return (read & CC_DATA) ? 1 : 0;
 }
 
 uint8_t
-ccdbg_read_byte(struct ccdbg *dbg)
+ccdbg_recv_byte(struct ccdbg *dbg, int first)
 {
+	uint8_t byte = 0;
 	int	bit;
-	uint8_t	byte = 0;
 
-	for (bit = 7; bit >= 0; bit--)
-		byte |= ccdbg_read_bit(dbg) << bit;
+	ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv byte\n#\n");
+	for (bit = 0; bit < 8; bit++) {
+		byte = byte << 1;
+		byte |= ccdbg_recv_bit(dbg, first);
+		if (bit == 3)
+			ccdbg_debug(CC_DEBUG_BITBANG, "\n");
+		first = 0;
+	}
+	ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv 0x%02x\n#\n", byte);
 	return byte;
 }
 
+void
+ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+	int first = 1;
+	while (nbytes--) {
+		*bytes++ = ccdbg_recv_byte(dbg, first);
+		first = 0;
+	}
+}
+
 void
 ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
 {
 	int	i;
-	ccdbg_write_byte(dbg, cmd);
+	ccdbg_send_byte(dbg, cmd);
 	for (i = 0; i < len; i++)
-		ccdbg_write_byte(dbg, data[i]);
+		ccdbg_send_byte(dbg, data[i]);
 }
 
 uint8_t
 ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
 {
+	uint8_t	byte[1];
 	ccdbg_cmd_write(dbg, cmd, data, len);
-	return ccdbg_read_byte(dbg);
+	ccdbg_recv_bytes(dbg, byte, 1);
+	return byte[0];
 }
 
 uint16_t
 ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
 {
-	uint8_t	byte1, byte0;
+	uint8_t	byte[2];
 	ccdbg_cmd_write(dbg, cmd, data, len);
-	byte1 = ccdbg_read_byte(dbg); 
-	byte0 = ccdbg_read_byte(dbg);
-	return (byte1 << 8) | byte0;
+	ccdbg_recv_bytes(dbg, byte, 2);
+	return (byte[0] << 8) | byte[1];
 }
-