103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/*
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* This file is part of DeskHop (https://github.com/hrvach/deskhop).
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* Copyright (c) 2024 Hrvoje Cavrak
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**================================================== *
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* ============= Initial Board Setup ============== *
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* ================================================== */
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#include "main.h"
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/* ================================================== *
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* Perform initial UART setup
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* ================================================== */
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void serial_init() {
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/* Set up our UART with a default baudrate. */
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uart_init(SERIAL_UART, SERIAL_BAUDRATE);
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/* Set UART flow control CTS/RTS. We don't have these - turn them off.*/
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uart_set_hw_flow(SERIAL_UART, false, false);
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/* Set our data format */
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uart_set_format(SERIAL_UART, SERIAL_DATA_BITS, SERIAL_STOP_BITS, SERIAL_PARITY);
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/* Turn of CRLF translation */
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uart_set_translate_crlf(SERIAL_UART, false);
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/* We do want FIFO, will help us have fewer interruptions */
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uart_set_fifo_enabled(SERIAL_UART, true);
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/* Set the RX/TX pins, they differ based on the device role (A or B, check
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/* schematics) */
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gpio_set_function(SERIAL_TX_PIN, GPIO_FUNC_UART);
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gpio_set_function(SERIAL_RX_PIN, GPIO_FUNC_UART);
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}
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/* ================================================== *
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* PIO USB configuration, D+ pin 14, D- pin 15
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* ================================================== */
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void pio_usb_host_config(void) {
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/* tuh_configure() must be called before tuh_init() */
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static pio_usb_configuration_t config = PIO_USB_DEFAULT_CONFIG;
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config.pin_dp = PIO_USB_DP_PIN_DEFAULT;
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tuh_configure(BOARD_TUH_RHPORT, TUH_CFGID_RPI_PIO_USB_CONFIGURATION, &config);
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/* Initialize and configure TinyUSB Host */
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tuh_init(1);
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}
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/* ================================================== *
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* Perform initial board/usb setup
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* ================================================== */
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void initial_setup(device_t *state) {
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/* PIO USB requires a clock multiple of 12 MHz, setting to 120 MHz */
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set_sys_clock_khz(120000, true);
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/* Search the persistent storage sector in flash for valid config or use defaults */
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load_config(state);
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/* Init and enable the on-board LED GPIO as output */
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gpio_init(GPIO_LED_PIN);
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gpio_set_dir(GPIO_LED_PIN, GPIO_OUT);
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/* Initialize and configure UART */
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serial_init();
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/* Initialize keyboard and mouse queues */
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queue_init(&state->kbd_queue, sizeof(hid_keyboard_report_t), KBD_QUEUE_LENGTH);
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queue_init(&state->mouse_queue, sizeof(mouse_abs_report_t), MOUSE_QUEUE_LENGTH);
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/* Setup RP2040 Core 1 */
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multicore_reset_core1();
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multicore_launch_core1(core1_main);
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/* Initialize and configure TinyUSB Device */
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tud_init(BOARD_TUD_RHPORT);
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/* Initialize and configure TinyUSB Host */
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pio_usb_host_config();
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/* Update the core1 initial pass timestamp before enabling the watchdog */
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state->core1_last_loop_pass = time_us_64();
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/* Setup the watchdog so we reboot and recover from a crash */
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watchdog_enable(WATCHDOG_TIMEOUT, WATCHDOG_PAUSE_ON_DEBUG);
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}
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/* ========== End of Initial Board Setup ========== */ |