demo: Strictly round up the number of samples to send

[libsigrok.git] / src / hardware / demo / demo.c

diff --git a/src/hardware/demo/demo.c b/src/hardware/demo/demo.c
index ce8249183f5a0fb244800b665be99a63f6ed3e00..f0edbcab1c8c3f7ca2f246f9f38230fa76692513 100644 (file)
--- a/src/hardware/demo/demo.c
+++ b/src/hardware/demo/demo.c
@@ -770,7 +770,7 @@ static int prepare_data(int fd, int revents, void *cb_data)
                todo_us = MAX(0, elapsed_us - devc->spent_us);
 
        /* How many samples are outstanding since the last round? */
-       samples_todo = (todo_us * devc->cur_samplerate + G_USEC_PER_SEC / 2)
+       samples_todo = (todo_us * devc->cur_samplerate + G_USEC_PER_SEC - 1)
                        / G_USEC_PER_SEC;
        if (devc->limit_samples > 0) {
                if (devc->limit_samples < devc->sent_samples)
@@ -865,7 +865,8 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
        while (g_hash_table_iter_next(&iter, NULL, &value))
                generate_analog_pattern(value, devc->cur_samplerate);
 
-       sr_session_source_add(sdi->session, -1, 0, 40, prepare_data, (void *)sdi);
+       sr_session_source_add(sdi->session, -1, 0, 100,
+                       prepare_data, (struct sr_dev_inst *)sdi);
 
        /* Send header packet to the session bus. */
        std_session_send_df_header(sdi, LOG_PREFIX);