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https://github.com/zmactep/rickroll-wristband
T-Wristband watch app with secret rickroll function
https://github.com/zmactep/rickroll-wristband
esp32 lilygo micropython rickroll t-wristband wifi
Last synced: 9 days ago
JSON representation
T-Wristband watch app with secret rickroll function
- Host: GitHub
- URL: https://github.com/zmactep/rickroll-wristband
- Owner: zmactep
- Created: 2022-11-18T12:47:43.000Z (about 2 years ago)
- Default Branch: master
- Last Pushed: 2022-12-06T06:57:05.000Z (about 2 years ago)
- Last Synced: 2024-10-30T00:47:56.260Z (about 2 months ago)
- Topics: esp32, lilygo, micropython, rickroll, t-wristband, wifi
- Language: Python
- Homepage:
- Size: 1.01 MB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
RickRoll Wristband
==================
[](https://youtu.be/4qXFLblkhrk)
## What is it?
This is a project of a wearable watch with a secret
[rickroll spam](https://github.com/spacehuhn/esp8266_beaconSpam) Wi-Fi function based on a
[LilyGo T-Wristband](https://www.lilygo.cc/products/t-wristband) device.
The watch uses deepsleep mode to reduce power consuption and also has
debug mode, that loads webrepl via Wi-Fi (station or access point mode).
This repository contains:
- Custom MicroPython-1.19.1 [firmware](https://github.com/zmactep/rickroll-wristband/tree/master/firmware) for ESP32
- Instruction how to build your own for a different version
- A [code](https://github.com/zmactep/rickroll-wristband/tree/master/src) of watch app with rickroll function
## Special thanks
- MicroPython ([micropython/micropython](https://github.com/micropython/micropython))
- ST7789_mpy ([russhughes/st7789_mpy](https://github.com/russhughes/st7789_mpy))
## How to build
### Step 1
Download last MicroPython stable version (e.g. 1.9.1), st7789_mpy driver and esp-idf tool:
```bash
git clone -b v1.9.1 https://github.com/micropython/micropython.git
git clone https://github.com/russhughes/st7789_mpy.git
git clone -b v4.4.3 --recursive https://github.com/espressif/esp-idf.git
```
### Step 2
Install `esp-idf` and activate it. **Make sure that you use non-virtualenv python.**
```bash
cd esp-idf
./install.sh
. ./export.sh
cd ..
```
### Step 3
Build `mpy-cross` tool:
```bash
cd micropython/mpy-cross
make
cd ../..
```
### Step 4
Insert two additional functions into ESP32 `network.WLAN`: `esp_wifi_set_channel` and `esp_wifi_80211_tx`. The first one is used
to select specific channel and the second we can use to transfer some raw data package.
You can find a place to put them at `micropython/ports/esp32/network_wlan.c`.
If you use `1.19.1` version of MicroPython you can simple apply the [patch](https://github.com/zmactep/rickroll-wristband/blob/master/network_wlan.c.patch) in this repo. Otherwise you have to add two includes:
```c
#include "py/objarray.h"
#include "py/binary.h"
```
And two functions:
```c
STATIC mp_obj_t network_wlan_channel(mp_obj_t self_in, mp_obj_t channel) {
wifi_mode_t mode;
esp_exceptions(esp_wifi_get_mode(&mode));
if ((mode & WIFI_MODE_STA) == 0) {
mp_raise_msg(&mp_type_OSError, MP_ERROR_TEXT("STA must be active"));
}
mp_int_t wifi_channel = 0;
if (mp_obj_get_int_maybe(channel, &wifi_channel)) {
esp_exceptions(esp_wifi_set_channel(wifi_channel, WIFI_SECOND_CHAN_NONE));
} else {
mp_raise_msg(&mp_type_TypeError, MP_ERROR_TEXT("Channel must be integer value"));
}
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(network_wlan_channel_obj, network_wlan_channel);
```
```c
STATIC mp_obj_t network_wlan_sendraw(size_t n_args, const mp_obj_t *args) {
wifi_mode_t mode;
esp_exceptions(esp_wifi_get_mode(&mode));
bool en_sys_seq = 0;
if (n_args == 3) {
en_sys_seq = mp_obj_is_true(args[2]);
}
mp_obj_array_t* a_ptr = MP_OBJ_TO_PTR(args[1]);
if (a_ptr->typecode != BYTEARRAY_TYPECODE) {
mp_raise_msg(&mp_type_TypeError, MP_ERROR_TEXT("Package must be a bytestring"));
}
byte* packet = (byte*)a_ptr->items;
size_t packet_len = a_ptr->len;
int result = esp_wifi_80211_tx(mode & WIFI_MODE_STA ? ESP_IF_WIFI_STA : ESP_IF_WIFI_AP, packet, packet_len, en_sys_seq);
return mp_obj_new_int(result);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(network_wlan_sendraw_obj, 2, 3, network_wlan_sendraw);
```
You also have to add function objects into methods table:
```c
STATIC const mp_rom_map_elem_t wlan_if_locals_dict_table[] = {
...
{ MP_ROM_QSTR(MP_QSTR_channel), MP_ROM_PTR(&network_wlan_channel_obj) },
{ MP_ROM_QSTR(MP_QSTR_sendraw), MP_ROM_PTR(&network_wlan_sendraw_obj) },
};
```
### Step 5
Copy some fonts from [st7789 c-module](https://github.com/russhughes/st7789_mpy):
```bash
cp st7789_mpy/fonts/bitmap/vga2_*.py micropython/ports/esp32/modules/
```
And build the firmware:
```bash
make USER_C_MODULES=../../../../st7789_mpy/st7789/micropython.cmake FROZEN_MANIFEST="" FROZEN_MPY_DIR=./modules
```