driver: tuyaMCU: introduce battery-powered device ack-delay

This introduces a delay for sending the ACKs on battery powered TuyaMCU
sensors.

Rationale is to allow users to delay the return to sleep state. This is
useful when e.g. changing settings on the device.

Currently the device is sent back to sleep after the status has been
read and commited to MQTT. This can be less than 5 seconds of uptime.

Set this value to a sane default, which allows the device to retain
online for enough time for a user to change configuration.

Signed-off-by: David Bauer <[email protected]>

src/driver/drv_tuyaMCU.c

@@ -211,6 +211,7 @@ static int wifi_state_timer = 0;
 static bool self_processing_mode = true;
 static bool state_updated = false;
 static int g_sendQueryStatePackets = 0;
+static int g_tuyaMCUBatteryAckDelay = 20;
 
 // wifistate to send when not online
 // See: https://imgur.com/a/mEfhfiA
@@ -1991,6 +1992,35 @@ commandResult_t TuyaMCU_FakePacket(const void* context, const char* cmd, const c
 	TuyaMCU_ProcessIncoming(packet, c);
 	return CMD_RES_OK;
 }
+
+commandResult_t Cmd_TuyaMCU_SetBatteryAckDelay(const void* context, const char* cmd, const char* args, int cmdFlags) {
+	int delay;
+
+	Tokenizer_TokenizeString(args, 0);
+	Tokenizer_CheckArgsCountAndPrintWarning(args, 1);
+
+	delay = Tokenizer_GetArgInteger(0);
+
+	if (!Tokenizer_IsArgInteger(0)) {
+		addLogAdv(LOG_INFO, LOG_FEATURE_TUYAMCU, "SetBatteryAckDelay: requires 1 argument [delay in seconds]\n");
+		return CMD_RES_NOT_ENOUGH_ARGUMENTS;
+	}
+
+	if (delay < 0) {
+		addLogAdv(LOG_INFO, LOG_FEATURE_TUYAMCU, "SetBatteryAckDelay: delay must be positive\n");
+		return CMD_RES_BAD_ARGUMENT;
+	}
+
+	if (delay > 60) {
+		addLogAdv(LOG_INFO, LOG_FEATURE_TUYAMCU, "SetBatteryAckDelay: delay too long, max 60 seconds\n");
+		return CMD_RES_BAD_ARGUMENT;
+	}
+
+	g_tuyaMCUBatteryAckDelay = delay;
+
+	return CMD_RES_OK;
+}
+
 void TuyaMCU_RunWiFiUpdateAndPackets() {
 	//addLogAdv(LOG_INFO, LOG_FEATURE_TUYAMCU,"WifiCheck %d ", wifi_state_timer);
 	/* Monitor WIFI and MQTT connection and apply Wifi state
@@ -2190,6 +2220,11 @@ void TuyaMCU_RunStateMachine_BatteryPowered() {
 		break;
 	case TM0_STATE_AWAITING_STATES:
 		if (g_tuyaNextRequestDelay <= 0) {
+			if (g_tuyaMCUBatteryAckDelay > 0) {
+				g_tuyaMCUBatteryAckDelay--;
+				break;
+			}
+
 			byte dat = 0x00;
 			if (g_tuyaMCUConfirmationsToSend_0x08 > 0) {
 				g_tuyaMCUConfirmationsToSend_0x08--;
@@ -2414,6 +2449,12 @@ void TuyaMCU_Init()
 	//cmddetail:"fn":"NULL);","file":"driver/drv_tuyaMCU.c","requires":"",
 	//cmddetail:"examples":""}
 	CMD_RegisterCommand("tuyaMcu_setupLED", Cmd_TuyaMCU_SetupLED, NULL);
+
+	//cmddetail:{"name":"Cmd_TuyaMCU_SetBatteryAckDelay","args":"[ackDelay]",
+	//cmddetail:"descr":"Defines the delay before the ACK is sent to TuyaMCU sending the device to sleep. Default value is 20 seconds.",
+	//cmddetail:"fn":"NULL);","file":"driver/drv_tuyaMCU.c","requires":"",
+	//cmddetail:"examples":""}
+	CMD_RegisterCommand("tuyaMcu_setBatteryAckDelay", Cmd_TuyaMCU_SetBatteryAckDelay, NULL);
 }