IEEE 802.15.4 subsystem
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| Source at commit ea23c905d32bfd2478915021476f9ede2ee014b8 created 6 years 3 months ago. By Josef Filzmaier, atusb/fw: Introduction of a new board named HULUSB | |
|---|---|
| 1 | /* |
| 2 | * boot/dfu_common.c - DFU protocol engine parts common to App/DFU |
| 3 | * |
| 4 | * Written 2008-2011, 2013-2014 by Werner Almesberger |
| 5 | * Copyright 2008-2011, 2013-2014 Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * http://www.usb.org/developers/devclass_docs/DFU_1.1.pdf |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * A few, erm, shortcuts: |
| 19 | * |
| 20 | * - we don't bother with the app* states since DFU is all this firmware does |
| 21 | * - after DFU_DNLOAD, we just block until things are written, so we never |
| 22 | * enter dfuDNLOAD_SYNC or dfuDNBUSY |
| 23 | * - no dfuMANIFEST_SYNC, dfuMANIFEST, or dfuMANIFEST_WAIT_RESET |
| 24 | * - to keep our buffers small, we only accept EP0-sized blocks |
| 25 | */ |
| 26 | |
| 27 | |
| 28 | #include <stdbool.h> |
| 29 | #include <stdint.h> |
| 30 | |
| 31 | #include "usb.h" |
| 32 | #include "dfu.h" |
| 33 | |
| 34 | #include "board.h" |
| 35 | #include "../sernum.h" |
| 36 | |
| 37 | |
| 38 | #ifndef NULL |
| 39 | #define NULL 0 |
| 40 | #endif |
| 41 | |
| 42 | #define debug(...) |
| 43 | #define error(...) |
| 44 | |
| 45 | |
| 46 | static const uint8_t functional_descriptor[] = { |
| 47 | 9, /* bLength */ |
| 48 | DFU_DT_FUNCTIONAL, /* bDescriptorType */ |
| 49 | 0xf, /* bmAttributes (claim omnipotence :-) */ |
| 50 | LE(0xffff), /* wDetachTimeOut (we're very patient) */ |
| 51 | LE(EP0_SIZE), /* wTransferSize */ |
| 52 | LE(0x101), /* bcdDFUVersion */ |
| 53 | }; |
| 54 | |
| 55 | |
| 56 | /* |
| 57 | * The worst-case activity would be flashing a one page and erasing another |
| 58 | * one, would should take less than 10 ms. A 100 ms timeout ought to be plenty. |
| 59 | */ |
| 60 | |
| 61 | struct dfu dfu = { |
| 62 | OK, /* bStatus */ |
| 63 | LE(100), 0, /* bwPollTimeout, 100 ms */ |
| 64 | dfuIDLE, /* bState */ |
| 65 | 0, /* iString */ |
| 66 | }; |
| 67 | |
| 68 | |
| 69 | bool dfu_setup_common(const struct setup_request *setup) |
| 70 | { |
| 71 | switch (setup->bmRequestType | setup->bRequest << 8) { |
| 72 | case DFU_FROM_DEV(DFU_GETSTATUS): |
| 73 | debug("DFU_GETSTATUS\n"); |
| 74 | usb_send(&eps[0], (uint8_t *) &dfu, sizeof(dfu), NULL, NULL); |
| 75 | return 1; |
| 76 | case DFU_TO_DEV(DFU_CLRSTATUS): |
| 77 | debug("DFU_CLRSTATUS\n"); |
| 78 | dfu.state = dfuIDLE; |
| 79 | dfu.status = OK; |
| 80 | return 1; |
| 81 | case DFU_FROM_DEV(DFU_GETSTATE): |
| 82 | debug("DFU_GETSTATE\n"); |
| 83 | usb_send(&eps[0], &dfu.state, 1, NULL, NULL); |
| 84 | return 1; |
| 85 | default: |
| 86 | error("DFU rt %x, rq%x ?\n", |
| 87 | setup->bmRequestType, setup->bRequest); |
| 88 | return 0; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | |
| 93 | bool dfu_my_descr(uint8_t type, uint8_t index, const uint8_t **reply, |
| 94 | uint8_t *size) |
| 95 | { |
| 96 | if (type != DFU_DT_FUNCTIONAL) |
| 97 | return sernum_get_descr(type, index, reply, size); |
| 98 | *reply = functional_descriptor; |
| 99 | *size = sizeof(functional_descriptor); |
| 100 | return 1; |
| 101 | } |
| 102 | |
