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cdbc9e01e7
Definition of a function as weak symbol for reset in bootloader which prints an error message if no real implementation is compiled in and the module `riotboot_reset` is not used. This is required if the module `usb_board_reset` is used to restart the board with an application via an USB CDC ACM interface, but the board's bootloader does not support a reset in the bootloader.
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Copyright (C) 2020 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup sys
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* @{
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* @file
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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* @}
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*/
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#define USB_H_USER_IS_RIOT_INTERNAL
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#include "log.h"
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#include "usb/usbus/cdc/acm.h"
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#include "usb_board_reset.h"
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#include "periph/pm.h"
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#ifndef RESET_IN_BOOTLOADER_TRIGGER_BAUDRATE
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#define RESET_IN_BOOTLOADER_TRIGGER_BAUDRATE (1200U)
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#endif
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#ifndef RESET_IN_APPLICATION_TRIGGER_BAUDRATE
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#define RESET_IN_APPLICATION_TRIGGER_BAUDRATE (600U)
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#endif
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int usb_board_reset_coding_cb(usbus_cdcacm_device_t *cdcacm,
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uint32_t baud, uint8_t bits,
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uint8_t parity, uint8_t stop)
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{
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/* Note: This function is also used by tinyUSB if module `usb_board_reset`
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* is used. In this case no USBUS CDC ACM device is defined and parameter
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* `cdcacm` is NULL. Please keep this in mind if `cdcacm` is to be used
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* in future versions. */
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(void)cdcacm;
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(void)bits;
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(void)parity;
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(void)stop;
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switch (baud) {
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case RESET_IN_BOOTLOADER_TRIGGER_BAUDRATE:
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LOG_DEBUG("[cdc-acm] reset in bootloader\n");
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usb_board_reset_in_bootloader();
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break;
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case RESET_IN_APPLICATION_TRIGGER_BAUDRATE:
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LOG_DEBUG("[cdc-acm] reset in application\n");
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usb_board_reset_in_application();
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break;
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default:
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(void)baud;
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break;
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}
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return 0;
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}
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#ifndef MODULE_RIOTBOOT_RESET
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/*
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* Definition of a function as weak symbol for reset in bootloader which
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* prints an error message if no real implementation is compiled in and
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* the `riotboot_reset` module is not used. This is required if the module
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* `usb_board_reset` is used to restart the board with an application via
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* an USB CDC ACM interface, but the board's bootloader does not support
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* a reset in the bootloader.
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*/
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__attribute__((weak))
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void usb_board_reset_in_bootloader(void)
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{
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LOG_ERROR("[cdc-acm] reset in bootloader is not supported\n");
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}
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#endif
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void usb_board_reset_in_application(void)
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{
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pm_reboot();
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while (1) {}
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}
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