X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=cctools%2Flib%2Fcccp.c;fp=cctools%2Flib%2Fcccp.c;h=0000000000000000000000000000000000000000;hb=a5782398d968e7cb11f7203afada7c216f233b3b;hp=34e866e89c4cda97c248702a55ad63bb1061b3ac;hpb=7cba411de0780c65e3490ab67186a514f0ea42ec;p=fw%2Faltos diff --git a/cctools/lib/cccp.c b/cctools/lib/cccp.c deleted file mode 100644 index 34e866e8..00000000 --- a/cctools/lib/cccp.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright © 2008 Keith Packard - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - */ - -#include "ccdbg.h" - -static void -say(char *name, uint8_t bits) -{ - printf("%s: ", name); - if (bits & CC_RESET_N) - printf ("R "); - else - printf (". "); - if (bits & CC_CLOCK) - printf ("C "); - else - printf (". "); - if (bits & CC_DATA) - printf ("D\n"); - else - printf (".\n"); -} - -static void -_cccp_write(struct ccdbg *dbg, uint8_t mask, uint8_t value) -{ - uint16_t set; - int ret; - - set = (mask) | (value << 8); - dbg->debug_data = (dbg->debug_data & ~mask) | (value & mask); - ret = ioctl(dbg->fd, CP2101_IOCTL_GPIOSET, &set); - if (ret < 0) - perror("CP2101_IOCTL_GPIOSET"); -} - -void -cccp_write(struct ccdbg *dbg, uint8_t mask, uint8_t value) -{ - _cccp_write(dbg, mask, value); -// say("w", dbg->debug_data); -} - -uint8_t -cccp_read_all(struct ccdbg *dbg) -{ - int ret; - uint8_t get; - ret = ioctl(dbg->fd, CP2101_IOCTL_GPIOGET, &get); - if (ret < 0) { - perror("CP2101_IOCTL_GPIOGET"); - get = 0; - } - return get; -} - -uint8_t -cccp_read(struct ccdbg *dbg, uint8_t mask) -{ - uint8_t pull_up; - uint8_t get; - - /* tri-state the bits of interest */ - pull_up = (~dbg->debug_data) & mask; - if (pull_up) - _cccp_write(dbg, pull_up, pull_up); - get = cccp_read_all(dbg); - say("\t\tr", get); - return get & mask; -} - -void -cccp_init(struct ccdbg *dbg) -{ - /* set all of the GPIOs to a known state */ - cccp_write(dbg, 0xf, 0xf); -} - -void -cccp_fini(struct ccdbg *dbg) -{ - /* set all of the GPIOs to a known state */ - cccp_write(dbg, 0xf, 0xf); - dbg->clock = 1; -} - -cccp_open() -{ - dbg->fd = open("/dev/ttyUSB0", 2); - if (dbg->fd < 0) { - perror(file); - free(dbg); - return NULL; - } - cccp_init(dbg); - cccp_write(dbg, CC_CLOCK, CC_CLOCK); -}