mirror of
https://github.com/aotta/PicoPAC
synced 2024-12-04 13:02:16 -05:00
154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/*
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// PicoPAC MultiCART by Andrea Ottaviani 2024
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//
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// VIDEOPAC multicart based on Raspberry Pico board -
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//
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// More info on https://github.com/aotta/
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//
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// parts of code are directly from the A8PicoCart project by Robin Edwards 2023
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//
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// Needs to be a release NOT debug build for the cartridge emulation to work
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//
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// Edit myboard.h depending on the type of flash memory on the pico clone//
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//
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// v. 1.0 2024-08-05 : Initial version for Pi Pico
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//
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*/
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#include <stdio.h>
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#include <string.h>
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#include "pico/stdlib.h"
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#include "pico/time.h"
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#include "tusb.h"
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#include "picopac_cart.h"
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#include "fatfs_disk.h"
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//void cdc_task(void);
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//--------------------------------------------------------------------+
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// USB CDC
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//--------------------------------------------------------------------+
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void cdc_task(void)
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{
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// connected() check for DTR bit
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// Most but not all terminal client set this when making connection
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// if ( tud_cdc_connected() )
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{
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// connected and there are data available
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if ( tud_cdc_available() )
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{
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// read data
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char buf[64];
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uint32_t count = tud_cdc_read(buf, sizeof(buf));
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(void) count;
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// Echo back
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// Note: Skip echo by commenting out write() and write_flush()
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// for throughput test e.g
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// $ dd if=/dev/zero of=/dev/ttyACM0 count=10000
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tud_cdc_write(buf, count);
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tud_cdc_write_flush();
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}
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}
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}
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// Invoked when cdc when line state changed e.g connected/disconnected
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void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
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{
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(void) itf;
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(void) rts;
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// TODO set some indicator
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if ( dtr )
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{
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// Terminal connected
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}else
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{
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// Terminal disconnected
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}
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}
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// Invoked when CDC interface received data from host
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void tud_cdc_rx_cb(uint8_t itf)
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{
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(void) itf;
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}
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int main(void)
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{
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tusb_init();
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stdio_init_all(); // for serial output, via printf()
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tud_init(BOARD_TUD_RHPORT);
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gpio_init_mask(FLAG_MASK);
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gpio_set_dir_in_masked(FLAG_MASK);
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gpio_init(PICO_DEFAULT_LED_PIN);
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gpio_set_dir(PICO_DEFAULT_LED_PIN,true);
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gpio_put(PICO_DEFAULT_LED_PIN,true);
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while(1) {
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while (to_ms_since_boot(get_absolute_time()) < 200)
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{
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if (gpio_get(PSEN_PIN)==1)
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picopac_cart_main();
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}
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// init device stack on configured roothub port
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// we are presumably powered from USB
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// enter USB mass storage mode
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// tud_init(BOARD_TUD_RHPORT);
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// stdio_init_all(); // for serial output, via printf()
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// printf("Start\n");
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while (1) {
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tud_task(); // tinyusb device task
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cdc_task();
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}
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}
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return 0;
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}
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//--------------------------------------------------------------------+
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// Device callbacks
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//--------------------------------------------------------------------+
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// Invoked when device is mounted
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void tud_mount_cb(void)
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{
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printf("Device mounted\n");
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if (!mount_fatfs_disk())
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create_fatfs_disk();
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}
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// Invoked when device is unmounted
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void tud_umount_cb(void)
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{
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printf("Device unmounted\n");
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}
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// Invoked when usb bus is suspended
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// remote_wakeup_en : if host allow us to perform remote wakeup
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// Within 7ms, device must draw an average of current less than 2.5 mA from bus
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void tud_suspend_cb(bool remote_wakeup_en)
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{
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(void) remote_wakeup_en;
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// blink_interval_ms = BLINK_SUSPENDED;
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}
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// Invoked when usb bus is resumed
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void tud_resume_cb(void)
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{
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// blink_interval_ms = BLINK_MOUNTED;
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}
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