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author | Jonas Gunz <himself@jonasgunz.de> | 2021-06-04 19:09:07 +0200 |
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committer | Jonas Gunz <himself@jonasgunz.de> | 2021-06-04 19:09:07 +0200 |
commit | 27321e05de35b494c2b282652e1c40a18435b68b (patch) | |
tree | 517ac03ec78902c608e6522ba1f58aebfff41d84 /src/uart.h | |
parent | 3ead2db8d979bab8fd8848d24de430979698b16f (diff) | |
download | analog_instruments-27321e05de35b494c2b282652e1c40a18435b68b.tar.gz |
implement uart
Diffstat (limited to 'src/uart.h')
-rw-r--r-- | src/uart.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/uart.h b/src/uart.h new file mode 100644 index 0000000..c709487 --- /dev/null +++ b/src/uart.h @@ -0,0 +1,36 @@ +/* + * src/uart.h + * (c) 2021 Jonas Gunz <himself@jonasgunz.de> + * License: All rights reserved. + */ + +/* + * Interrupt controlled UART + */ + +#ifndef _UART_H_ +#define _UART_H_ + +#include <avr/io.h> +#include <avr/interrupt.h> +#include <stdint.h> +#include <string.h> + +#ifndef BAUD +#warning BAUD "BAUD not defined. Dafaulting to 9600" +#define BAUD 9600 +#endif + +#ifndef F_CPU +#error "F_CPU not defined" +#endif + +#define UBRR F_CPU/16/BAUD-1 + +void uart_init(); + +uint8_t uart_putchar(char _c); + +uint8_t uart_getchar(char *_c); + +#endif |