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https://opencores.org/ocsvn/openrisc/openrisc/trunk
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[/] [openrisc/] [trunk/] [bootloaders/] [orpmon/] [cmds/] [touch.c] - Rev 708
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#include "common.h" #include "support.h" #include "spi.h" int touch_cmd(int argc, char *argv[]) { unsigned long x, y, z1, z2; float res; if (argc == 0) { printf("usage: -r read coordinates\n"); printf (" -c read coordinates in a loop (press any key to exit)\n"); } else if (argc == 1) { if (!strcmp(argv[0], "-r")) { spi_init(0, 1000000, 21, 0, 1, 0); printf("X = %.3lx\n", spi_xmit(0xd3l << 13) & 0xfff); printf("Y = %.3lx\n", spi_xmit(0x93l << 13) & 0xfff); } else if (!strcmp(argv[0], "-c")) { spi_init(0, 1000000, 21, 0, 1, 0); while (1) { x = spi_xmit(0xd3l << 13) & 0xfff; z1 = spi_xmit(0xb3l << 13) & 0xfff; z2 = spi_xmit(0xc3l << 13) & 0xfff; res = (z2 / z1) - 1; res = ((float)x * res) / 4096; if ((int)res < 20) { y = spi_xmit(0x93l << 13) & 0xfff; printf("X = %.3lx\n", x); printf("Y = %.3lx\n\n", y); } if (testc()) break; } } } else { printf("usage: -r read coordinates\n"); printf (" -c read coordinates in a loop (press any key to exit)\n"); } return 0; } void module_touch_init(void) { register_command("touch", "", "touch screen utility", touch_cmd); }
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