X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Fdemo%2Fprotocol.h;h=d21d0d6a359c9a26f2cd92d42e7a63650afdd94b;hb=53ea24610e5eb0750f98ed7fccccba4de0b4b5ba;hp=d747d9c20f9736b18e9cd5c7c3d86292d5fbb3f6;hpb=2ea1fdf12113311cbe1a4316e9e2efe4d8ac40f0;p=libsigrok.git

diff --git a/src/hardware/demo/protocol.h b/src/hardware/demo/protocol.h
index d747d9c2..d21d0d6a 100644
--- a/src/hardware/demo/protocol.h
+++ b/src/hardware/demo/protocol.h
@@ -33,31 +33,12 @@
 #define LOGIC_BUFSIZE			4096
 /* Size of the analog pattern space per channel. */
 #define ANALOG_BUFSIZE			4096
-
-/* Private, per-device-instance driver context. */
-struct dev_context {
-	uint64_t cur_samplerate;
-	uint64_t limit_samples;
-	uint64_t limit_msec;
-	uint64_t sent_samples;
-	int64_t start_us;
-	int64_t spent_us;
-	uint64_t step;
-	/* Logic */
-	int32_t num_logic_channels;
-	unsigned int logic_unitsize;
-	/* There is only ever one logic channel group, so its pattern goes here. */
-	uint8_t logic_pattern;
-	unsigned char logic_data[LOGIC_BUFSIZE];
-	/* Analog */
-	int32_t num_analog_channels;
-	GHashTable *ch_ag;
-	gboolean avg; /* True if averaging is enabled */
-	uint64_t avg_samples;
-};
+/* This is a development feature: it starts a new frame every n samples. */
+#define SAMPLES_PER_FRAME		1000UL
+#define DEFAULT_LIMIT_FRAMES		0
 
 /* Logic patterns we can generate. */
-enum {
+enum logic_pattern_type {
 	/**
 	 * Spells "sigrok" across 8 channels using '0's (with '1's as
 	 * "background") when displayed using the 'bits' output format.
@@ -75,24 +56,69 @@ enum {
 	 */
 	PATTERN_INC,
 
+	/**
+	 * Single bit "walking" across all logic channels by being
+	 * shifted across data lines, restarting after the last line
+	 * was used. An all-zero (all-one) state is inserted to prevent
+	 * repetitive patterns (e.g. with 8 data lines, every 8th state
+	 * would show the same line state)
+	 */
+	PATTERN_WALKING_ONE,
+	PATTERN_WALKING_ZERO,
+
 	/** All channels have a low logic state. */
 	PATTERN_ALL_LOW,
 
 	/** All channels have a high logic state. */
 	PATTERN_ALL_HIGH,
-};
 
-/* Analog patterns we can generate. */
-enum {
 	/**
-	 * Square wave.
+	 * Mimics a cable squid. Derived from the "works with" logo
+	 * to occupy a larger number of channels yet "painting"
+	 * something that can get recognized.
 	 */
+	PATTERN_SQUID,
+
+	/** Gray encoded data, like rotary encoder signals. */
+	PATTERN_GRAYCODE,
+};
+
+/* Analog patterns we can generate. */
+enum analog_pattern_type {
 	PATTERN_SQUARE,
 	PATTERN_SINE,
 	PATTERN_TRIANGLE,
 	PATTERN_SAWTOOTH,
 };
 
+struct dev_context {
+	uint64_t cur_samplerate;
+	uint64_t limit_samples;
+	uint64_t limit_msec;
+	uint64_t limit_frames;
+	uint64_t sent_samples;
+	uint64_t sent_frame_samples; /* Number of samples that were sent for current frame. */
+	int64_t start_us;
+	int64_t spent_us;
+	uint64_t step;
+	/* Logic */
+	int32_t num_logic_channels;
+	size_t logic_unitsize;
+	uint64_t all_logic_channels_mask;
+	/* There is only ever one logic channel group, so its pattern goes here. */
+	enum logic_pattern_type logic_pattern;
+	uint8_t logic_data[LOGIC_BUFSIZE];
+	/* Analog */
+	int32_t num_analog_channels;
+	GHashTable *ch_ag;
+	gboolean avg; /* True if averaging is enabled */
+	uint64_t avg_samples;
+	size_t enabled_logic_channels;
+	size_t enabled_analog_channels;
+	size_t first_partial_logic_index;
+	uint8_t first_partial_logic_mask;
+};
+
 static const char *analog_pattern_str[] = {
 	"square",
 	"sine",
@@ -101,7 +127,8 @@ static const char *analog_pattern_str[] = {
 };
 
 struct analog_gen {
-	int pattern;
+	struct sr_channel *ch;
+	enum analog_pattern_type pattern;
 	float amplitude;
 	float pattern_data[ANALOG_BUFSIZE];
 	unsigned int num_samples;
@@ -110,7 +137,7 @@ struct analog_gen {
 	struct sr_analog_meaning meaning;
 	struct sr_analog_spec spec;
 	float avg_val; /* Average value */
-	unsigned num_avgs; /* Number of samples averaged */
+	unsigned int num_avgs; /* Number of samples averaged */
 };
 
 SR_PRIV void demo_generate_analog_pattern(struct analog_gen *ag, uint64_t sample_rate);