diff options
author | Birte Kristina Friesel <derf@finalrewind.org> | 2024-01-26 20:38:50 +0100 |
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committer | Birte Kristina Friesel <derf@finalrewind.org> | 2024-01-26 20:38:50 +0100 |
commit | 218166456b68ca2266c8e7c77c1085ad4fc16e86 (patch) | |
tree | d83ca341c6706dcbac806c960d8f8baaadfc0421 /src/arch/atmega2560/driver/stdin2.cc | |
parent | fc4a1906ff3fa4ce355c3a058b15ed243d8ce7a8 (diff) |
ATMega2560: Add stdin and stdout on UART1, UART2, UART3
Diffstat (limited to 'src/arch/atmega2560/driver/stdin2.cc')
-rw-r--r-- | src/arch/atmega2560/driver/stdin2.cc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/arch/atmega2560/driver/stdin2.cc b/src/arch/atmega2560/driver/stdin2.cc new file mode 100644 index 0000000..f807e26 --- /dev/null +++ b/src/arch/atmega2560/driver/stdin2.cc @@ -0,0 +1,35 @@ +/* + * Copyright 2020 Birte Kristina Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include "driver/stdin2.h" +#include <avr/io.h> +#include <avr/interrupt.h> + +void StandardInput2::setup() +{ + UCSR2B |= _BV(RXCIE2); +} + +bool StandardInput2::hasKey() +{ + if (write_pos != read_pos) { + return true; + } + return false; +} + +char StandardInput2::getKey() +{ + char ret = buffer[read_pos++]; + read_pos %= bufsize; + return ret; +} + +StandardInput2 kin2; + +ISR(USART2_RX_vect) +{ + kin2.addKey(UDR2); +} |