Update README.md

m3y54m · web-flow · commit 11b4c8e6384d · 2023-08-03T15:31:18.000+03:30
diff --git a/README.md b/README.md
@@ -211,6 +211,8 @@ Becoming an embedded engineer requires a broad understanding of both software an
 
 ### Microcontrollers
 
+- [Mastering STM32](https://leanpub.com/mastering-stm32)
+
 #### GPIO
 
 #### ADC
