Using Libc's stdio to Send Formatted Strings

Overview

In this video:

• Provide good community tutorials to understand how to use printf( )
  1. Use Standard IO streams in AVR® GCC
  2. Use printf with an AVR® MCU
• Set up a 'file' and a 'stream', using FDEV_SETUP_STREAM
• Copy our existing IRQ-based void USART0_Transmit( unsigned char data ) function, then modify the parameter types to match what FDEV_SETUP_STREAM expects to create int USART0_Transmit_IO( char data, FILE *steam ), in the process extending the functionality of our USART_irq driver.
• Test our formatted string.
• Add a loop counter to our formatted string, using Stanford's AVR Programming Wiki to check syntax.

Learn More

• Using and Testing the ADC
• Sending "Hello World!" from the USART