108 lines
2.7 KiB
C
Executable File
108 lines
2.7 KiB
C
Executable File
// Copyright (C) 2014 Michael McMaster <michael@codesrc.com>
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//
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// This file is part of SCSI2SD.
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//
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// SCSI2SD 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 3 of the License, or
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// (at your option) any later version.
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//
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// SCSI2SD is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU 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 SCSI2SD. If not, see <http://www.gnu.org/licenses/>.
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#pragma GCC push_options
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#pragma GCC optimize("-flto")
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#include "device.h"
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#include "scsi.h"
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#include "scsiPhy.h"
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#include "config.h"
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#include "disk.h"
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#include "led.h"
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#include "time.h"
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#include "trace.h"
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const char* Notice = "Copyright (C) 2015 Michael McMaster <michael@codesrc.com>";
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int main()
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{
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timeInit();
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ledInit();
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traceInit();
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// Enable global interrupts.
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// Needed for RST and ATN interrupt handlers.
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CyGlobalIntEnable;
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// Set interrupt handlers.
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scsiPhyInit();
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configInit(&scsiDev.boardCfg);
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debugInit();
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scsiInit();
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scsiDiskInit();
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// Optional bootup delay
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int delaySeconds = 0;
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while (delaySeconds < scsiDev.boardCfg.startupDelay) {
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// Keep the USB connection working, otherwise it's very hard to revert
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// silly extra-long startup delay settings.
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int i;
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for (i = 0; i < 200; i++) {
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CyDelay(5);
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scsiDev.watchdogTick++;
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configPoll();
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}
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++delaySeconds;
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}
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uint32_t lastSDPoll = getTime_ms();
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sdCheckPresent();
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while (1)
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{
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scsiDev.watchdogTick++;
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scsiPoll();
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scsiDiskPoll();
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configPoll();
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sdPoll();
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if (unlikely(scsiDev.phase == BUS_FREE))
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{
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if (unlikely(elapsedTime_ms(lastSDPoll) > 200))
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{
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lastSDPoll = getTime_ms();
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sdCheckPresent();
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}
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else
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{
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// Wait for our 1ms timer to save some power.
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// There's an interrupt on the SEL signal to ensure we respond
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// quickly to any SCSI commands. The selection abort time is
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// only 250us, and new SCSI-3 controllers time-out very
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// not long after that, so we need to ensure we wake up quickly.
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uint8_t interruptState = CyEnterCriticalSection();
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if (!SCSI_ReadFilt(SCSI_Filt_SEL))
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{
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__WFI(); // Will wake on interrupt, regardless of mask
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}
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CyExitCriticalSection(interruptState);
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}
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}
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else if (scsiDev.phase >= 0)
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{
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// don't waste time scanning SD cards while we're doing disk IO
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lastSDPoll = getTime_ms();
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}
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}
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return 0;
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}
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#pragma GCC pop_options
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