Intro to Bare Metal Playlist: https://www.youtube.com/playlist?list=PLtQdQmNK_0DQ8KGcZ1BOPv-3RDPvtqJ1H In this AVR-DD bare metal video, we will create an SPI driver for both host and client devices. This is the last bare metal driver before we start building our final project, using all of the drivers we have written. Relevant Links: Overview of SPI: https://mchp.us/3vJFr3F Tech Brief TB3215 - Getting Started with SPI: https://mchp.us/3TLEm3g SPI Peripheral Page: https://mchp.us/4aBo4Rw AVR-DD Family Page: https://mchp.us/3POFZfz Timestamps: 00:00 - In the previous video 00:39 - In this video 01:16 - What is SPI? 01:57 - Create new project for SPI and import previously created libraries 02:15 - Set up main clock and USART 03:01 - Test Main Clock and USART 03:25 - TB3215 - Sending Data as Host Device 03:43 - Configure location of SPI pins 04:40 - Create SPI Host Driver Initialization function 05:08 - How to initialize the peripheral 06:06 - Configure direction of pins 06:50 - SPI Buffer Mode 08:20 - Write functions to select and deselect client devices 09:20 - Write functions to write, read and exchange a byte 14:02 - Write main function to test SPI Host driver 15:20 - Using Loopback to test Host driver 15:46 - SPI Client Driver - Create project and import libraries 16:31 - SPI Client Initialization function 17:04 - ISR (Interrupt Service Routine) for SPI Client 19:16 - Write main function to test SPI Client driver 19:35 - Modify SPI Host driver to work with SPI Client driver 20:21 - Connect SPI bus 20:46 - Test both Host and Client drivers together 21:25 - In the next videos