mirror of
https://github.com/dschmenk/apple2pi.git
synced 2024-11-24 12:31:30 +00:00
6951ff78d7
The Raspberry Pi Pico is connected to the Linux computer via its USB port, so every Linux computer with USB 1.1 ACM CDC virtual serial port (usually exposed as /dev/ttyACM0) support can be used. For the Apple2Pi card v6.x see https://youtu.be/WHq4d5E-5p8?t=1083
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
|
|
|
|
MIT License
|
|
|
|
Copyright (c) 2022 Oliver Schmidt (https://a2retro.de/)
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "pico/printf.h"
|
|
#include "pico/stdlib.h"
|
|
#include "pico/multicore.h"
|
|
|
|
#include "bus.pio.h"
|
|
|
|
void board();
|
|
|
|
#ifdef TRACE
|
|
void uart_printf(uart_inst_t *uart, const char *format, ...) {
|
|
static char buffer[0x100];
|
|
|
|
va_list va;
|
|
va_start(va, format);
|
|
vsnprintf(buffer, sizeof(buffer), format, va);
|
|
va_end(va);
|
|
|
|
buffer[0xFF] = '\0';
|
|
uart_puts(uart, buffer);
|
|
}
|
|
#endif
|
|
|
|
int main() {
|
|
stdio_init_all();
|
|
stdio_set_translate_crlf(&stdio_usb, false);
|
|
|
|
#ifdef TRACE
|
|
uart_init(uart0, 115200);
|
|
uart_set_translate_crlf(uart0, true);
|
|
gpio_set_function(0, GPIO_FUNC_UART);
|
|
gpio_set_function(1, GPIO_FUNC_UART);
|
|
#endif
|
|
|
|
for (uint gpio = gpio_addr; gpio < gpio_addr + size_addr; gpio++) {
|
|
gpio_init(gpio);
|
|
gpio_set_pulls(gpio, false, false); // floating
|
|
}
|
|
|
|
for (uint gpio = gpio_data; gpio < gpio_data + size_data; gpio++) {
|
|
pio_gpio_init(pio0, gpio);
|
|
gpio_set_pulls(gpio, false, false); // floating
|
|
}
|
|
|
|
gpio_init(gpio_enbl);
|
|
gpio_set_pulls(gpio_enbl, false, false); // floating
|
|
|
|
gpio_init(gpio_irq);
|
|
gpio_pull_up(gpio_irq);
|
|
|
|
gpio_init(gpio_rdy);
|
|
gpio_pull_up(gpio_rdy);
|
|
|
|
gpio_init(gpio_led);
|
|
gpio_set_dir(gpio_led, GPIO_OUT);
|
|
|
|
uint offset;
|
|
|
|
offset = pio_add_program(pio0, &enbl_program);
|
|
enbl_program_init(offset);
|
|
|
|
offset = pio_add_program(pio0, &write_program);
|
|
write_program_init(offset);
|
|
|
|
offset = pio_add_program(pio0, &read_program);
|
|
read_program_init(offset);
|
|
|
|
multicore_launch_core1(board);
|
|
|
|
while (true) {
|
|
if (multicore_fifo_rvalid()) {
|
|
uint32_t data = multicore_fifo_pop_blocking();
|
|
putchar(data);
|
|
#ifdef TRACE
|
|
uart_printf(uart0, "> %02X\n", data);
|
|
#endif
|
|
}
|
|
|
|
if (multicore_fifo_wready()) {
|
|
int data = getchar_timeout_us(0);
|
|
if (data != PICO_ERROR_TIMEOUT) {
|
|
multicore_fifo_push_blocking(data);
|
|
#ifdef TRACE
|
|
uart_printf(uart0, "< %02X\n", data);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|