Update readme

README.md

@@ -1,22 +1,18 @@
-# STM32 Programming with opencm3: Part 1
+# STM32 Programming with opencm3: Part 2
 
 This repository contains the complete companion code and EAGLE design files
 to accompany
-[this blog post](https://rhye.org/post/stm32-with-opencm3-1-usart-and-printf/)
-which details setting up a USART, and redirecting printf to it.
+[this blog post](https://rhye.org/post/stm32-with-opencm3-2-spi-and-dma)
+which works through using SPI and DMA on an STM32 series MCU.
 
-You can also check out
-[the previous post](https://rhye.org/post/stm32-with-opencm3-0-compiling-and-uploading/),
-which details the basics of compiling and flashing code.
+You can also check out the two previous posts in the series:
+
+- [Compiling and Uploading](https://rhye.org/post/stm32-with-opencm3-0-compiling-and-uploading/),
+- [Alternate Functions and USARTs](https://rhye.org/post/stm32-with-opencm3-1-usart-and-printf/)
 
 In this repo:
-- `main.cpp`: The main example code with USART.
+- `main.cpp`: The main example code
 - `stm32f0.ld`: Linker script for the `STM32F070CB` MCU
 - `Makefile`: Collection of rules to build and upload code to the MCU
 - `.gdbinit`: GDB resource file that automates conencting to an attached Black Magic Probe
 - `libopencm3`: Git submodule referencing our version of opencm3.
-
-## Pictures
-
-Console output with formatted timestamp
-![Timestamped console output](/img/timestamp_console.png?raw=true)