knb
d2fd6cc1f9
Align raster protocol bytes and print-end sequencing by printer family, add safer status polling/retry behavior, and document the changes with regression coverage to prevent protocol regressions. Made-with: Cursor
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#include "libptouch_protocol.h"
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size_t ptouch_line_payload_bytes(unsigned head_dots)
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{
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return (size_t)((head_dots + 7u) / 8u);
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}
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void ptouch_fill_gf_header(uint8_t out[3], size_t line_payload_bytes)
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{
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out[0] = 0x47u;
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out[1] = (uint8_t)(line_payload_bytes & 0xFFu);
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out[2] = (uint8_t)((line_payload_bytes >> 8) & 0xFFu);
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}
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void ptouch_fill_esc_iz(uint8_t out[13], uint8_t media_kind, uint8_t media_width,
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uint32_t raster_lines)
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{
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out[0] = 0x1Bu;
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out[1] = 0x69u;
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out[2] = 0x7Au;
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/* PI flags: enable media/width/length with quality bit for broad compatibility. */
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out[3] = 0x8Eu;
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/* Use status media-kind byte directly (e.g., 0x01 laminated, 0x03 non-laminate). */
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out[4] = media_kind;
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out[5] = media_width;
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out[6] = 0x00u;
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out[7] = (uint8_t)(raster_lines & 0xFFu);
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out[8] = (uint8_t)((raster_lines >> 8) & 0xFFu);
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out[9] = (uint8_t)((raster_lines >> 16) & 0xFFu);
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out[10] = (uint8_t)((raster_lines >> 24) & 0xFFu);
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out[11] = 0x00u; /* first page */
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out[12] = 0x00u; /* fixed */
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}
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uint8_t ptouch_esc_ik_value(unsigned head_dots)
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{
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/* Preserve legacy 560-dot behaviour (0x0C), 128-dot uses 0x08. */
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return head_dots > 128u ? 0x0Cu : 0x08u;
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}
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