FreeCalypso > hg > fc-tourmaline
view bwsplash/pbm2c.c @ 281:a75eefbf8be4
Phone boot with PWON: weed out short button presses
Every standard end user phone has a design provision, most naturally
implemented in firmware, whereby the PWON button effects a boot only
if it is held down long enough - short presses of this PWON button
are detected, assumed to be spurious and cause the fw to power back off
instead of proceeding with boot. The present change introduces this
standard function in FreeCalypso.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 24 Sep 2021 02:03:08 +0000 |
parents | 4d9f24c501f3 |
children |
line wrap: on
line source
/* * This program compiles bwsplash.pbm into a C char array * for inclusion into phone UI firmware source. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> FILE *inf, *outf; char *infname, linebuf[128]; int lineno; void get_input_line() { char *cp; if (!fgets(linebuf, sizeof linebuf, inf)) { fprintf(stderr, "%s: premature EOF\n", infname); exit(1); } lineno++; cp = index(linebuf, '\n'); if (!cp) { fprintf(stderr, "%s line %d: too long or missing newline\n", infname, lineno); exit(1); } *cp = '\0'; } void parse_pixel_line(outbuf, npix) u_char *outbuf; unsigned npix; { char *cp; u_char *dp; unsigned n; cp = linebuf; dp = outbuf; for (n = 0; n < npix; n++) { if (*cp != '0' && *cp != '1') { inv: fprintf(stderr, "%s line %d: does not match expected line of %u 0/1 characters\n", infname, lineno, npix); exit(1); } *dp++ = *cp++ - '0'; } if (*cp) goto inv; } void pack_pixel_byte(bits) u_char *bits; { unsigned byte, mask, n; byte = 0; for (n = 0, mask = 0x80; n < 8; n++, mask >>= 1) if (bits[n]) byte |= mask; fprintf(outf, "0x%02X,", byte); } main(argc, argv) char **argv; { unsigned nrow, ncol; u_char rowbuf[80]; if (argc != 3) { fprintf(stderr, "usage: %s pbmfile outfile\n", argv[0]); exit(1); } infname = argv[1]; inf = fopen(infname, "r"); if (!inf) { perror(infname); exit(1); } get_input_line(); if (strcmp(linebuf, "P1")) { fprintf(stderr, "error in %s: first line is not the expected \"P1\"\n", infname); exit(1); } get_input_line(); if (strcmp(linebuf, "80 30")) { fprintf(stderr, "error in %s: second line is not the expected \"80 30\"\n", infname); exit(1); } outf = fopen(argv[2], "w"); if (!outf) { perror(argv[2]); exit(1); } for (nrow = 0; nrow < 30; nrow++) { get_input_line(); parse_pixel_line(rowbuf, 80); putc('\t', outf); for (ncol = 0; ncol < 80; ncol += 8) pack_pixel_byte(rowbuf + ncol); putc('\n', outf); } exit(0); }