jtag-mpsse

JTAG tools for FTDI MPSSE transports
git clone http://frotz.net/git/jtag-mpsse.git
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wri2c.c (1061B)


      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 != 4) {
     26 		fprintf(stderr, "usage: wri2c <saddr> <addr> <value>\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 	val = strtoul(argv[3], 0, 16);
     35 
     36 	if (i2c_wr16(saddr, addr, val)) {
     37 		fprintf(stderr, "error\n");
     38 		return -1;
     39 	}
     40 	return 0;
     41 }