From a1f1065be89a39ceb0f9b2014be1e7fd3efc16b6 Mon Sep 17 00:00:00 2001
From: gururise <gururise@gmail.com>
Date: Wed, 8 Apr 2020 10:25:40 -0700
Subject: [PATCH] Add PMS5003 commands

---
 tasmota/xsns_18_pms5003.ino | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tasmota/xsns_18_pms5003.ino b/tasmota/xsns_18_pms5003.ino
index 2f02ff454..3e12bb1d0 100644
--- a/tasmota/xsns_18_pms5003.ino
+++ b/tasmota/xsns_18_pms5003.ino
@@ -37,6 +37,23 @@ TasmotaSerial *PmsSerial;
 uint8_t pms_type = 1;
 uint8_t pms_valid = 0;
 
+enum PmsCommands
+{
+  CMD_MODE_ACTIVE,
+  CMD_SLEEP,
+  CMD_WAKEUP,
+  CMD_MODE_PASSIVE,
+  CMD_READ_DATA
+};
+
+const uint8_t kPmsCommands[][7] PROGMEM = {
+    //  0     1    2    3     4     5     6
+    {0x42, 0x4D, 0xE1, 0x00, 0x01, 0x01, 0x71},  // pms_set_active_mode
+    {0x42, 0x4D, 0xE4, 0x00, 0x00, 0x01, 0x73},  // pms_sleep
+    {0x42, 0x4D, 0xE4, 0x00, 0x01, 0x01, 0x74},  // pms_wake
+    {0x42, 0x4D, 0xE1, 0x00, 0x00, 0x01, 0x70},  // pms_set_passive_mode
+    {0x42, 0x4D, 0xE2, 0x00, 0x00, 0x01, 0x71}}; // pms_passive_mode_read
+
 struct pmsX003data {
   uint16_t framelen;
   uint16_t pm10_standard, pm25_standard, pm100_standard;
@@ -52,6 +69,13 @@ struct pmsX003data {
 
 /*********************************************************************************************/
 
+size_t PmsSendCmd(uint8_t command_id)
+{
+  return MhzSerial->write(kPmsCommands[command_id], sizeof(kPmsCommands[command_id]));
+}
+
+/*********************************************************************************************/
+
 bool PmsReadData(void)
 {
   if (! PmsSerial->available()) {