cem-dt-885x: Send last measurement at normal rate in hold mode

[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 f3809fc27d37d53da25f20fb1f45375dc03d8d41..fa96d163fdfb0f21aa49395885c8b1e507df6287 100644 (file)
--- a/hardware/cem-dt-885x/protocol.h
+++ b/hardware/cem-dt-885x/protocol.h
@@ -35,6 +35,9 @@
 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
 
 #define BUF_SIZE 32
+/* 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
 
 enum {
        TOKEN_WEIGHT_TIME_FAST = 0x02,
@@ -80,6 +83,7 @@ struct dev_context {
        int buf_len;
        unsigned char buf[BUF_SIZE];
        float last_spl;
+       gint64 hold_last_sent;
 
 };