AN6077
// PINFLAGSxx | EPxFIFOIRQ | |
// EPxFIFOIE | GPIFIRQ | |
// | GPIFIE | GPIFADRH:L |
// | UDMACRCH:L | EPxGPIFTRIG |
// GPIFTRIG |
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SYNCDELAY; | // | activate |
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FIFORESET = 0x80; |
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SYNCDELAY; | // | see TRM section 15.14 |
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FIFORESET = 0x82; | // | reset, FIFO 2 |
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SYNCDELAY; | // | reset, FIFO 4 |
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FIFORESET = 0x84; | // |
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SYNCDELAY; | // | reset, FIFO 6 |
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FIFORESET = 0x86; | // |
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SYNCDELAY; | // | reset, FIFO 8 |
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FIFORESET = 0x88; | // |
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SYNCDELAY; | // | deactivate |
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FIFORESET = 0x00; | // |
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SYNCDELAY; | // | FLAGA - fixed EP8FF, FLAGB - fixed EP6FF |
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PINFLAGSAB = 0xEF; |
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SYNCDELAY; | // | FLAGC - fixed EP2EF, FLAGD - fixed EP4EF |
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PINFLAGSCD = 0x98; |
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SYNCDELAY; | // | FLAGD, set alt. func. of PA7 pin |
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PORTACFG = 0x80; |
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SYNCDELAY; | // | all signals active low |
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FIFOPINPOLAR = 0x00; |
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SYNCDELAY; |
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EP2CFG = 0xA0; |
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SYNCDELAY; |
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EP6CFG = 0xE0; |
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// EP4 and EP8 are not used in this implementation |
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SYNCDELAY; | // | clear valid bit |
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EP4CFG = 0x20; | // |
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SYNCDELAY; | // | clear valid bit |
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EP8CFG = 0x60; | // |
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// handle the case where we were | already in AUTO mode |
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EP2FIFOCFG = 0x00; | // | AUTOOUT=0, WORDWIDE=0 |
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SYNCDELAY; |
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SYNCDELAY; | // | arm first buffer |
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EP2BCL = 0x00; | // |
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SYNCDELAY; | // | arm second buffer |
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EP2BCL = 0x00; | // |
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SYNCDELAY; | // | arm third buffer |
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EP2BCL = 0x00; | // |
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SYNCDELAY; | // | arm fourth buffer |
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EP2BCL = 0x00; | // |
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SYNCDELAY; | // |
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SYNCDELAY; |
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OUTPKTEND = 0x02; |
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SYNCDELAY; |
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OUTPKTEND = 0x02; |
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SYNCDELAY; |
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OUTPKTEND = 0x02; |
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SYNCDELAY; |
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OUTPKTEND = 0x02; |
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SYNCDELAY; |
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February 19, 2008 | Document No. | 18 | |
