Controlling Delonghi Primadonna Elite through ST

Wiki Projects & Stories
41

Hey guys,

As mentioned earlier in this thread, here are the service and characteristic that you need to scan and read from:

const SERVICE = "00035b03-58e6-07dd-021a-08123a000300";
const CHARACTERISTIC = "00035b03-58e6-07dd-021a-08123a000301";

Note that you need to enable both notifications and indications for the characteristic, before writing to it.

Here are the commands I managed to intercept so far (I am using a JSON format as an example):

{
  "turn_on":                                ["0d 07 84 0f 02 01 55 12",
                                             "0d 07 84 0f 02 01 55 12",
                                             "0d 07 84 0f 02 01 55 12",
                                             "0d 07 84 0f 02 01 55 12",
                                             "0d 07 84 0f 02 01 55 12",
                                             "0d 07 84 0f 02 01 55 12"],
  "health_check":                           ["0d 05 75 0f da 25"],
  "machine_status":                         ["0d 08 95 0f 00 32 01 5d df", "0d 08 95 0f 00 3f 01 2b 83"],


  "settings_cup_lighting_on":               ["0d 0b 90 0f 00 3f 00 00 00 99 39 22"],
  "settings_cup_lighting_off":              ["0d 0b 90 0f 00 3f 00 00 00 91 b8 2a"],
  "settings_cup_warmer_on":                 ["0d 0b 90 0f 00 3f 00 00 00 b1 9c 48"],
  "settings_cup_warmer_off":                ["0d 0b 90 0f 00 3f 00 00 00 91 b8 2a"],
  "settings_energy_saving_on":              ["0d 0b 90 0f 00 3f 00 00 00 91 b8 2a"],
  "settings_energy_saving_off":             ["0d 0b 90 0f 00 3f 00 00 00 81 aa 1b"],
  "settings_beep_sound_on":                 ["0d 0b 90 0f 00 3f 00 00 00 91 b8 2a"],
  "settings_beep_sound_off":                ["0d 0b 90 0f 00 3f 00 00 00 95 f8 ae"],
  "settings_show_time":                     ["0d 08 95 0f 00 5f 03 00 eb"],
  "settings_water_hardness_1":              ["0d 0b 90 0f 00 32 00 00 00 00 0a c8"],
  "settings_water_hardness_2":              ["0d 0b 90 0f 00 32 00 00 00 02 2a 8a"],
  "settings_water_hardness_3":              ["0d 0b 90 0f 00 32 00 00 00 02 2a 8a"],
  "settings_water_hardness_4":              ["0d 0b 90 0f 00 32 00 00 00 03 3a ab"],

  "beverages_setting_a1_q20_t1":            ["0d 11 83 f0 01 00 01 00 14 02 01 08 00 00 00 05 bb fd"],
  "beverages_setting_a2_q20_t1":            ["0d 11 83 f0 01 00 01 00 14 02 02 08 00 00 00 05 75 1d"],
  "beverages_setting_a3_q20_t1":            ["0d 11 83 f0 01 00 01 00 14 02 03 08 00 00 00 05 30 bd"],
  "beverages_setting_a4_q20_t1":            ["0d 11 83 f0 01 00 01 00 14 02 04 08 00 00 00 05 f8 fc"],
  "beverages_setting_a5_q20_t1":            ["0d 11 83 f0 01 00 01 00 14 02 05 08 00 00 00 05 bd 5c"],
  
  "beverages_setting_a2_q40_t2":            ["0d 11 83 f0 01 00 01 00 28 02 02 08 00 00 00 05 22 76"],
  
  "beverage_espresso_1_a1_q20_t1":          ["0d 11 83 f0 01 01 01 00 14 02 01 08 00 00 00 06 53 d7",     "0d 08 83 f0 01 02 06 9d e1"],

  "beverage_espresso_1_a2_q40_t2":          ["0d 11 83 f0 01 01 01 00 28 02 02 08 00 00 00 06 ca 5c",     "0d 08 83 f0 01 02 06 9d e1"],
  "beverage_espresso_1_a3_q40_t2":          ["0d 11 83 f0 01 01 01 00 28 02 03 08 00 00 00 06 8f fc",     "0d 08 83 f0 01 02 06 9d e1"],
  "beverage_espresso_2":                    ["0d 11 83 f0 01 01 01 00 28 02 03 08 01 00 00 06 f9 48",     "0d 08 83 f0 01 02 06 9d e1"],
  "beverage_coffee":                        ["0d 0f 83 f0 02 01 01 00 67 02 02 00 00 06 77 ff",           "0d 08 83 f0 02 02 06 c4 b1"],
  "beverage_doppio_plus":                   ["0d 0d 83 f0 05 01 01 00 78 00 00 06 c4 7e",                 "0d 08 83 f0 05 02 06 41 21"],
  "beverage_steam":                         ["0d 0d 83 f0 11 01 09 03 84 1c 01 06 c0 7b",                 "0d 08 83 f0 11 02 06 de 82"],
  "beverage_hot_water":                     ["0d 0d 83 f0 10 01 0f 00 fa 1c 01 06 04 b4",                 "0d 08 83 f0 10 02 06 e9 b2"],
  "beverage_2_espressos":                   ["0d 0f 83 f0 04 01 01 00 28 02 02 00 00 06 ab 53",           "0d 08 83 f0 04 02 06 76 11"],
  "beverage_americano":                     ["0d 12 83 f0 06 01 01 00 28 02 03 0f 00 6e 00 00 06 47 8b",  "0d 08 83 f0 06 02 06 18 71"],
  "beverage_coffee_long":                   ["0d 0f 83 f0 03 01 01 00 a0 02 03 00 00 06 18 7f",           "0d 08 83 f0 03 02 06 f3 81"],
}

NOTES:
The packets are sent by chunks (each entry in the arrays above corresponds to one chunck). For example, the turn_on commands need to send 6 times the following packet: “0d 07 84 0f 02 01 55 12”.

For the machine_status, we need to send “0d 08 95 0f 00 32 01 5d df” followed by “0d 08 95 0f 00 3f 01 2b 83”.

Explanation about the arbitrary beverage naming I am using above (ie. beverage_espresso_1_a3_q40_t2):

  • a is for Aroma: 5 levels
  • q is for quantity: from 20 to 120ml
  • t is for temperature: 4 levels
  • espresso_1 is one cup of espresso
  • espresso_2 is two cups of espresso

I still need to figure all the other combinations! I am just short on time :sweat_smile:

Also, sending commands to the machine should be easy to do now. However, I am still figuring out the correct protocol that the machine is using. I am looking into decoding the responses coming from the machine. But it’s a little bit challenging, since De’longhi seems to be using a proprietary protocol. But I am working on it :slight_smile:

I will keep you updated here once I have more news!

Cheers.

2 Likes