From: Marc Schink <redacted>
Date: Wed, 7 Feb 2024 15:15:31 +0000 (+0100)
Subject: Add SR_CONF_INVERTED
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=2bc696a80342a05fb6e976f258d02a3a43f655f0;p=libsigrok.git

Add SR_CONF_INVERTED

Many device such as oscilloscopes, signal and delay generators are
capable to invert signals or change their polarity.

Add a new configuration to implement such a feature. The term 'inverted'
is chosen in favor of 'polarity' because the former can be unambiguously
represented by a boolean value.

Signed-off-by: Marc Schink <redacted>
---

diff --git a/include/libsigrok/libsigrok.h b/include/libsigrok/libsigrok.h
index 6c5dea08..c27bc1dd 100644
--- a/include/libsigrok/libsigrok.h
+++ b/include/libsigrok/libsigrok.h
@@ -1137,6 +1137,15 @@ enum sr_configkey {
 	 */
 	SR_CONF_OVER_CURRENT_PROTECTION_DELAY,
 
+	/**
+	 * Signal inversion.
+	 * @arg type: boolean
+	 * @arg get: @b true if the signal is inverted or has negative polarity,
+	 *           @b false otherwise
+	 * @arg set: set @b true to invert the signal
+	 */
+	SR_CONF_INVERTED,
+
 	/* Update sr_key_info_config[] (hwdriver.c) upon changes! */
 
 	/*--- Special stuff -------------------------------------------------*/
diff --git a/src/hwdriver.c b/src/hwdriver.c
index 068a215a..984ca0d0 100644
--- a/src/hwdriver.c
+++ b/src/hwdriver.c
@@ -216,6 +216,8 @@ static struct sr_key_info sr_key_info_config[] = {
 		"Resistance Target", NULL},
 	{SR_CONF_OVER_CURRENT_PROTECTION_DELAY, SR_T_FLOAT, "ocp_delay",
 		"Over-current protection delay", NULL},
+	{SR_CONF_INVERTED, SR_T_BOOL, "inverted",
+		"Signal inverted", NULL},
 
 	/* Special stuff */
 	{SR_CONF_SESSIONFILE, SR_T_STRING, "sessionfile",