From 365f04d61f54908013021be83450d38fff67964f Mon Sep 17 00:00:00 2001
From: lelazary <lelazary@yahoo.com>
Date: Tue, 8 Jan 2013 08:27:52 -0800
Subject: [PATCH] mso-19: Initial analog probe support (unfinished).

 - Added the analog probe (unfinished).

 - Reset trigger to state to 0 before capture, just incase the scope is in
   the middle of a capture.
---
 hardware/link-mso19/api.c      | 14 ++++++++++++--
 hardware/link-mso19/protocol.c |  5 +++--
 hardware/link-mso19/protocol.h |  2 +-
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/hardware/link-mso19/api.c b/hardware/link-mso19/api.c
index 93302655..94ef39fd 100644
--- a/hardware/link-mso19/api.c
+++ b/hardware/link-mso19/api.c
@@ -22,6 +22,7 @@
 #include "protocol.h"
 
 static const int hwcaps[] = {
+	SR_CONF_OSCILLOSCOPE,
 	SR_CONF_LOGIC_ANALYZER,
 	SR_CONF_SAMPLERATE,
 	SR_CONF_TRIGGER_SLOPE,
@@ -38,7 +39,8 @@ static const int hwcaps[] = {
  * See also: http://www.linkinstruments.com/images/mso19_1113.gif
  */
 SR_PRIV const char *mso19_probe_names[NUM_PROBES + 1] = {
-	"0", "1", "2", "3", "4", "5", "6", "7", NULL
+	/* Note: DSO needs to be first. */
+	"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
 };
 
 static const struct sr_samplerates samplerates = {
@@ -65,6 +67,7 @@ static GSList *hw_scan(GSList *options)
 	GSList *l;
 	struct sr_config *src;
 	struct udev *udev;
+	int ptype;
 
 	(void)options;
 
@@ -183,7 +186,8 @@ static GSList *hw_scan(GSList *options)
 
 		for (i = 0; i < NUM_PROBES; i++) {
 			struct sr_probe *probe;
-			if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE,
+			ptype = (i == 0) ? SR_PROBE_ANALOG : SR_PROBE_LOGIC;
+			if (!(probe = sr_probe_new(i, ptype, TRUE,
 						   mso19_probe_names[i])))
 				return 0;
 			sdi->probes = g_slist_append(sdi->probes, probe);
@@ -443,9 +447,15 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 	if (ret != SR_OK)
 		return ret;
 
+	/* Reset trigger state. */
+	devc->trigger_state = 0x00;
+
 	/* Send header packet to the session bus. */
 	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
 
+	/* Our first probe is analog, the other 8 are of type 'logic'. */
+	/* TODO. */
+
 	sr_source_add(devc->serial->fd, G_IO_IN, -1, mso_receive_data, cb_data);
 
 	return SR_OK;
diff --git a/hardware/link-mso19/protocol.c b/hardware/link-mso19/protocol.c
index d41a9e72..ab77a5a1 100644
--- a/hardware/link-mso19/protocol.c
+++ b/hardware/link-mso19/protocol.c
@@ -333,7 +333,7 @@ SR_PRIV int mso_configure_rate(const struct sr_dev_inst *sdi, uint32_t rate)
 	return ret;
 }
 
-SR_PRIV int mso_check_trigger(struct sr_serial_dev_inst *serial, uint8_t * info)
+SR_PRIV int mso_check_trigger(struct sr_serial_dev_inst *serial, uint8_t *info)
 {
 	uint16_t ops[] = { mso_trans(REG_TRIGGER, 0) };
 	int ret;
@@ -346,7 +346,8 @@ SR_PRIV int mso_check_trigger(struct sr_serial_dev_inst *serial, uint8_t * info)
 	uint8_t buf = 0;
 	if (serial_read(serial, &buf, 1) != 1)	/* FIXME: Need timeout */
 		ret = SR_ERR;
-	*info = buf;
+	if (!info)
+		*info = buf;
 
 	sr_dbg("Trigger state is: 0x%x.", *info);
 	return ret;
diff --git a/hardware/link-mso19/protocol.h b/hardware/link-mso19/protocol.h
index 687e5a09..bf9488dd 100644
--- a/hardware/link-mso19/protocol.h
+++ b/hardware/link-mso19/protocol.h
@@ -41,7 +41,7 @@
 #define USB_VENDOR		"3195"
 #define USB_PRODUCT		"f190"
 
-#define NUM_PROBES		8
+#define NUM_PROBES		(1 + 8)
 #define NUM_TRIGGER_STAGES	4
 #define TRIGGER_TYPE 		"01"	//the first r/f is used for the whole group
 #define SERIALCOMM		"460800/8n1/flow=2"