Completed platformio blog

blog/content/nvim-platformio-lua.md

@@ -35,3 +35,47 @@ return {
 
 And that's you have `nvim-platformio.lua` and `PlatformIO` ready to be used 🥳.
 
+# Usage
+
+### Setup a project
+1. Create a new directory for the project and cd into it, in my case ill be using a ESP32.
+```
+mkdir esp_project
+cd esp_project
+```
+2. Open neovim and run `:Pioinit`, this will open a telescope picker where you can fuzzy find and select the board you want to use. Then press enter.
+
+{{ image(src="/img/pioinit.gif", position="left") }}
+
+3. After selecting the board, you'll have option to select the desired framework such as `Arduino`, `ESP-IDF`, `STM32 Cube` etc. And press enter.
+4. Now a toggleterm window will pop up which will run the `pio` project setup command and install any missing tools or dependencies.
+5. Now you should have a `PlatformIO` project setup with `.ccls` file which will let your `LSP` make aware of the include path for the libraries.
+6. Open the `src/main.c` file and write the code. In my case I wrote a simple `ESP-IDF` code which blink led and print to Serial line.
+```c
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "driver/gpio.h"
+#include "esp_log.h"
+
+#define BLINK_GPIO 12
+
+void app_main() {
+    gpio_pad_select_gpio(BLINK_GPIO);
+    gpio_set_direction(BLINK_GPIO, GPIO_MODE_OUTPUT);
+    while(1) {
+        gpio_set_level(BLINK_GPIO, 1);
+        ESP_LOGI("LED", "LED ON");
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+        gpio_set_level(BLINK_GPIO, 0);
+        ESP_LOGI("LED", "LED OFF");
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+    }
+}
+```
+7. Compile and flash the code by running `:Piorun`.
+8. Open the serial monitor to see the output by running `:Piomon`
+
+This was a brief introduction to `PlatformIO` and `nvim-platformio.lua`. 
+>+ **Run `:help PlatformIO`** to see the detailed usage and option for each command.
+>+ Checkout [platformio.ini](https://docs.platformio.org/en/latest/projectconf/sections/env/index.html) docs for project configuration.
+>+ [PlatformIO cli](https://docs.platformio.org/en/latest/core/userguide/index.html) to extend usage.