X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fhardware%2Frdtech-dps%2Fapi.c;h=fad31d629434ef5ae99f166305fd6ba1e7a5e5ec;hb=bd5f0a143eb12b9d6c341afe28b7f25feab53046;hp=50025e6de3ca3eeb27e8a8948bd53f11df9a1267;hpb=cce6a8a1b74b736fdd8ff52d3b231b59f0a2662f;p=libsigrok.git

diff --git a/src/hardware/rdtech-dps/api.c b/src/hardware/rdtech-dps/api.c
index 50025e6d..fad31d62 100644
--- a/src/hardware/rdtech-dps/api.c
+++ b/src/hardware/rdtech-dps/api.c
@@ -298,11 +298,23 @@ static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 {
 	struct dev_context *devc;
 	struct sr_modbus_dev_inst *modbus;
+	uint16_t registers[3];
 	int ret;
 
 	modbus = sdi->conn;
 	devc = sdi->priv;
 
+	/* Prefill actual states */
+	g_mutex_lock(&devc->rw_mutex);
+	ret = rdtech_dps_read_holding_registers(modbus, REG_PROTECT, 3, registers);
+	g_mutex_unlock(&devc->rw_mutex);
+	if (ret != SR_OK)
+		return ret;
+	devc->actual_ovp_state = RB16(registers + 0) == STATE_OVP;
+	devc->actual_ocp_state = RB16(registers + 0) == STATE_OCP;
+	devc->actual_regulation_state = RB16(registers + 1);
+	devc->actual_output_state = RB16(registers + 2);
+
 	if ((ret = sr_modbus_source_add(sdi->session, modbus, G_IO_IN, 10,
 			rdtech_dps_receive_data, (void *)sdi)) != SR_OK)
 		return ret;