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106 lines
2.1 KiB
C
106 lines
2.1 KiB
C
/*
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* fw/param.c - Parameter upload
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*
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* Written 2012 by Werner Almesberger
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* Copyright 2012 Werner Almesberger
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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; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include <avr/pgmspace.h>
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#include "hash.h"
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#include "sweep.h"
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#include "secret.h"
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#include "proto.h"
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#include "dispatch.h"
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struct sweep fwd_sweep = {
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.pixel_ticks = TP_FWD_PIX_DEFAULT,
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.left = PX_FWD_LEFT_DEFAULT,
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.right = PX_FWD_RIGHT_DEFAULT,
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.forward = 1,
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};
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struct sweep bwd_sweep = {
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.pixel_ticks = TP_BWD_PIX_DEFAULT,
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.left = PX_BWD_LEFT_DEFAULT,
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.right = PX_BWD_RIGHT_DEFAULT,
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.forward = 0,
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};
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uint16_t xa_high = XA_HIGH_DEFAULT;
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uint16_t xa_low = XA_LOW_DEFAULT;
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uint32_t fwd_start = TP_FWD_START_DEFAULT;
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uint32_t bwd_start = TP_BWD_START_DEFAULT;
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static struct params tmp;
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static bool failed;
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static void new_params(void)
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{
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xa_high = tmp.xa_high;
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xa_low = tmp.xa_low;
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fwd_sweep.left = tmp.px_fwd_left;
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fwd_sweep.right = tmp.px_fwd_right;
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bwd_sweep.left = tmp.px_bwd_left;
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bwd_sweep.right = tmp.px_bwd_right;
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fwd_start = tmp.tp_fwd_start;
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bwd_start = tmp.tp_bwd_start;
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fwd_sweep.pixel_ticks = tmp.tp_fwd_pix;
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bwd_sweep.pixel_ticks = tmp.tp_bwd_pix;
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}
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static bool param_more(uint8_t seq, uint8_t limit, const uint8_t *payload)
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{
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switch (limit-seq) {
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default:
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hash_merge(payload, PAYLOAD);
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break;
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case 1:
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hash_end();
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failed = !hash_eq(payload, PAYLOAD, 0);
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break;
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case 0:
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if (!hash_eq(payload, PAYLOAD, PAYLOAD))
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failed = 1;
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if (failed)
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return 0;
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new_params();
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break;
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}
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return 1;
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}
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static bool param_first(uint8_t limit, const uint8_t *payload)
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{
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hash_init();
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hash_merge_progmem(image_secret, sizeof(image_secret));
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hash_merge(payload, PAYLOAD);
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memcpy(&tmp, payload, sizeof(tmp));
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failed = 0;
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return 1;
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}
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struct handler param_handler = {
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.type = PARAM,
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.first = param_first,
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.more = param_more,
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};
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