rdi2c.c (1046B)
1 /* Copyright 2014 Brian Swetland <swetland@frotz.net> 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <unistd.h> 19 20 #include "i2c.h" 21 22 int main(int argc, char **argv) { 23 unsigned saddr, addr, val; 24 25 if (argc != 3) { 26 fprintf(stderr, "usage: rdi2c <saddr> <addr>\n"); 27 return -1; 28 } 29 30 i2c_init(); 31 32 saddr = strtoul(argv[1], 0, 16); 33 addr = strtoul(argv[2], 0, 16); 34 35 if (i2c_rd16(saddr, addr, &val)) { 36 fprintf(stderr, "error\n"); 37 return -1; 38 } 39 printf("%04x\n", val); 40 return 0; 41 }