#ifndef LIBSIGROK_HARDWARE_SYSCLK_LWLA_PROTOCOL_H
#define LIBSIGROK_HARDWARE_SYSCLK_LWLA_PROTOCOL_H
-/* Message logging helpers with subsystem-specific prefix string. */
#define LOG_PREFIX "sysclk-lwla"
#include "lwla.h"
#define USB_INTERFACE 0
#define USB_TIMEOUT 3000 /* ms */
-#define NUM_PROBES 34
+#define NUM_CHANNELS 34
#define TRIGGER_TYPES "01fr"
+/* Bit mask covering all 34 channels.
+ */
+#define ALL_CHANNELS_MASK (((uint64_t)1 << NUM_CHANNELS) - 1)
+
/** Unit and packet size for the sigrok logic datafeed.
*/
-#define UNIT_SIZE ((NUM_PROBES + 7) / 8)
-#define PACKET_SIZE (10000 * UNIT_SIZE) /* bytes */
+#define UNIT_SIZE ((NUM_CHANNELS + 7) / 8)
+#define PACKET_LENGTH 10000 /* units */
/** Size of the acquisition buffer in device memory units.
*/
*/
#define READ_CHUNK_LEN (28 * 8)
-/** Calculate the required buffer size in 16-bit units for reading a given
+/** Calculate the required buffer size in 32-bit units for reading a given
* number of device memory words. Rounded to a multiple of 8 device words.
*/
-#define LWLA1034_MEMBUF_LEN(count) (((count) + 7) / 8 * 18)
+#define LWLA1034_MEMBUF_LEN(count) (((count) + 7) / 8 * 9)
/** Maximum number of 16-bit words sent at a time during acquisition.
* Used for allocating the libusb transfer buffer.
*/
#define MAX_ACQ_SEND_WORDS 8 /* 5 for memory read request plus stuffing */
-/** Maximum number of 16-bit words received at a time during acquisition.
+/** Maximum number of 32-bit words received at a time during acquisition.
* Round to the next multiple of the endpoint buffer size to avoid nasty
* transfer overflow conditions on hiccups.
*/
-#define MAX_ACQ_RECV_WORDS ((READ_CHUNK_LEN / 4 * 9 + 255) / 256 * 256)
+#define MAX_ACQ_RECV_LEN ((READ_CHUNK_LEN / 8 * 9 + 127) / 128 * 128)
/** Maximum length of a register write sequence.
*/
*/
#define DEFAULT_SAMPLERATE SR_MHZ(125)
-/** LWLA clock sources.
+/** Maximum configurable sample count limit.
+ */
+#define MAX_LIMIT_SAMPLES (UINT64_C(1) << 48)
+
+/** Maximum configurable capture duration in milliseconds.
+ */
+#define MAX_LIMIT_MSEC (UINT64_C(1) << 32)
+
+/** LWLA1034 FPGA clock configurations.
+ */
+enum clock_config {
+ CONF_CLOCK_NONE,
+ CONF_CLOCK_INT,
+ CONF_CLOCK_EXT_RISE,
+ CONF_CLOCK_EXT_FALL,
+};
+
+/** Available clock sources.
*/
enum clock_source {
- CLOCK_SOURCE_NONE,
- CLOCK_SOURCE_INT,
- CLOCK_SOURCE_EXT_RISE,
- CLOCK_SOURCE_EXT_FALL,
+ CLOCK_INTERNAL,
+ CLOCK_EXT_CLK,
+};
+
+/** Available trigger sources.
+ */
+enum trigger_source {
+ TRIGGER_CHANNELS = 0,
+ TRIGGER_EXT_TRG,
+};
+
+/** Available edge choices for the external clock and trigger inputs.
+ */
+enum signal_edge {
+ EDGE_POSITIVE = 0,
+ EDGE_NEGATIVE,
};
/** LWLA device states.
uint64_t sample;
uint64_t run_len;
- /** Number of samples acquired so far. */
- uint64_t captured_samples;
+ /** Maximum number of samples to process. */
+ uint64_t samples_max;
/** Number of samples sent to the session bus. */
- uint64_t transferred_samples;
+ uint64_t samples_done;
+
+ /** Maximum duration of capture, in milliseconds. */
+ uint64_t duration_max;
+ /** Running capture duration since trigger event. */
+ uint64_t duration_now;
/** Capture memory fill level. */
size_t mem_addr_fill;
size_t mem_addr_next;
size_t mem_addr_stop;
- size_t out_offset;
+ size_t out_index;
struct libusb_transfer *xfer_in;
struct libusb_transfer *xfer_out;
enum rle_state rle;
- /* Payload data buffers for outgoing and incoming transfers. */
+ /** Whether to bypass the clock divider. */
+ gboolean bypass_clockdiv;
+
+ /* Payload data buffers for incoming and outgoing transfers. */
+ uint32_t xfer_buf_in[MAX_ACQ_RECV_LEN];
uint16_t xfer_buf_out[MAX_ACQ_SEND_WORDS];
- uint16_t xfer_buf_in[MAX_ACQ_RECV_WORDS];
/* Payload buffer for sigrok logic packets. */
- uint8_t out_packet[PACKET_SIZE];
+ uint8_t out_packet[PACKET_LENGTH * UNIT_SIZE];
};
/** Private, per-device-instance driver context.
/** The samplerate selected by the user. */
uint64_t samplerate;
+ /** The maximimum sampling duration, in milliseconds. */
+ uint64_t limit_msec;
+
/** The maximimum number of samples to acquire. */
uint64_t limit_samples;
enum device_state state;
- /** The currently configured clock source of the device. */
- enum clock_source cur_clock_source;
- /** The clock source selected by the user. */
- enum clock_source selected_clock_source;
+ /** The currently active clock configuration of the device. */
+ enum clock_config cur_clock_config;
+
+ /** Clock source configuration setting. */
+ enum clock_source cfg_clock_source;
+ /** Clock edge configuration setting. */
+ enum signal_edge cfg_clock_edge;
+
+ /** Trigger source configuration setting. */
+ enum trigger_source cfg_trigger_source;
+ /** Trigger slope configuration setting. */
+ enum signal_edge cfg_trigger_slope;
/* Indicates that stopping the acquisition is currently in progress. */
gboolean stopping_in_progress;
SR_PRIV void lwla_free_acquisition_state(struct acquisition_state *acq);
SR_PRIV int lwla_init_device(const struct sr_dev_inst *sdi);
-SR_PRIV int lwla_set_clock_source(const struct sr_dev_inst *sdi);
+SR_PRIV int lwla_set_clock_config(const struct sr_dev_inst *sdi);
SR_PRIV int lwla_setup_acquisition(const struct sr_dev_inst *sdi);
SR_PRIV int lwla_start_acquisition(const struct sr_dev_inst *sdi);
SR_PRIV int lwla_abort_acquisition(const struct sr_dev_inst *sdi);
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