Beginning of support for LCD1602
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5545 42af7a65-404d-4744-a932-0658087f49c3
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# define PMP_MODE_MODE_SLAVE (1 << PMP_MODE_MODE_SHIFT) /* Enhanced slave mode */
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# define PMP_MODE_MODE_MODE2 (2 << PMP_MODE_MODE_SHIFT) /* Master mode 2 */
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# define PMP_MODE_MODE_MODE1 (3 << PMP_MODE_MODE_SHIFT) /* Master mode 1 */
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#define PMP_MODE_MODE16 (1 << 10) /* Bit 10: 8/16-bit mode */
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#define PMP_MODE_MODE16 (1 << 10) /* Bit 10: 1=16-bit mode */
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#define PMP_MODE_MODE8 (0) /* 0=8-bit mode */
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#define PMP_MODE_INCM_SHIFT (11) /* Bits 11-12: Increment Mode */
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#define PMP_MODE_INCM_MASK (3 << PMP_MODE_INCM_SHIFT)
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# define PMP_MODE_INCM_NONE (0 << PMP_MODE_INCM_SHIFT) /* No incr or decr of addr */
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