cem-dt-885x: Support for retrieving stored samples

[libsigrok.git] / hardware / cem-dt-885x / protocol.h

diff --git a/hardware/cem-dt-885x/protocol.h b/hardware/cem-dt-885x/protocol.h
index fa9474d6b99e52f1b50de4f9e08e742b29aa9519..85a0ea770d5c04dc158b26f0c518d0327ea9959e 100644 (file)
--- a/hardware/cem-dt-885x/protocol.h
+++ b/hardware/cem-dt-885x/protocol.h
@@ -34,7 +34,13 @@
 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
 
-#define BUF_SIZE 32
+/* When retrieving samples from device memory, group this many
+ * together into a sigrok packet. */
+#define SAMPLES_PER_PACKET 50
+
+/* Various temporary storage, at least 8 bytes. */
+#define BUF_SIZE SAMPLES_PER_PACKET * 2
+
 /* When in hold mode, force the last measurement out at this interval.
  * We're using 50ms, which duplicates the non-hold 20Hz update rate. */
 #define HOLD_REPEAT_INTERVAL 50 * 1000
@@ -73,6 +79,14 @@ enum {
        CMD_TOGGLE_HOLD_MAX_MIN = 0x11,
        CMD_TOGGLE_MEAS_RANGE = 0x88,
        CMD_TOGGLE_POWER_OFF = 0x33,
+       CMD_TRANSFER_MEMORY = 0xac,
+};
+
+enum {
+       RECORD_DBA = 0xaa,
+       RECORD_DBC = 0xcc,
+       RECORD_DATA = 0xac,
+       RECORD_END = 0xdd,
 };
 
 enum {
@@ -94,6 +108,7 @@ struct dev_context {
        /* Operational state */
        int state;
        uint64_t num_samples;
+       gboolean enable_data_source_memory;
 
        /* Temporary state across callbacks */
        void *cb_data;
@@ -110,7 +125,9 @@ enum {
        ST_INIT,
        ST_GET_TOKEN,
        ST_GET_DATA,
-       ST_GET_LOG,
+       ST_GET_LOG_HEADER,
+       ST_GET_LOG_RECORD_META,
+       ST_GET_LOG_RECORD_DATA,
 };
 
 SR_PRIV int cem_dt_885x_receive_data(int fd, int revents, void *cb_data);