168 lines
4.4 KiB
C
168 lines
4.4 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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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 "ch.h"
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#include "hal.h"
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#include "tusb.h"
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/* Blink pattern
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* - 250 ms : device not mounted
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* - 1000 ms : device mounted
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* - 2500 ms : device is suspended
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*/
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enum {
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BLINK_NOT_MOUNTED = 250,
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BLINK_MOUNTED = 1000,
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BLINK_SUSPENDED = 2500,
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};
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static uint16_t blink_timer = TIME_MS2I(BLINK_NOT_MOUNTED);
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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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blink_timer = TIME_MS2I(BLINK_MOUNTED);
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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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blink_timer = TIME_MS2I(BLINK_NOT_MOUNTED);
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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_timer = TIME_MS2I(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_timer = TIME_MS2I(BLINK_MOUNTED);
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}
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static THD_WORKING_AREA(waUsbThread, 512);
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static THD_FUNCTION(UsbThread, arg) {
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(void) arg;
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tusb_init();
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// RTOS forever loop
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while (1)
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{
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// tinyusb device task
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tud_task();
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}
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}
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static THD_WORKING_AREA(waCdcThread, 256);
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static THD_FUNCTION(CdcThread, arg) {
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(void) arg;
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while (true) {
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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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// There are data available
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if ( tud_cdc_available() )
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{
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uint8_t buf[64];
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// read and echo back
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uint32_t count = tud_cdc_read(buf, sizeof(buf));
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for(uint32_t i=0; i<count; i++)
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{
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tud_cdc_write_char(buf[i]);
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if ( buf[i] == '\r' ) tud_cdc_write_char('\n');
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}
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tud_cdc_write_flush();
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}
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}
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chThdSleepMilliseconds(10);
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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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// connected
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if ( dtr )
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{
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// print initial message when connected
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tud_cdc_write_str("\r\nTinyUSB CDC MSC device with FreeRTOS example\r\n");
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tud_cdc_write_flush();
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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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/*
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* Application entry point.
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*/
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int main(void) {
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/*
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* System initializations.
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* - HAL initialization, this also initializes the configured device drivers
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* and performs the board-specific initializations.
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* - Kernel initialization, the main() function becomes a thread and the
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* RTOS is active.
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*/
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halInit();
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chSysInit();
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chThdCreateStatic(waUsbThread, sizeof(waUsbThread), HIGHPRIO-1, UsbThread, NULL);
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chThdCreateStatic(waCdcThread, sizeof(waCdcThread), HIGHPRIO-2, CdcThread, NULL);
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while (1)
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{
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chThdSleepMilliseconds(blink_timer);
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//palToggleLine(LINE_LED);
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}
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}
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