FreeCalypso > hg > freecalypso-tools

annotate loadtools/tpinterf3.c @ 619:f82551c77e58

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libserial-newlnx: ASYNC_LOW_LATENCY patch reverted Reports from Das Signal indicate that loadtools performance on Debian is about the same as on Slackware, and that including or omitting the ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the patch in question does not appear to be necessary, it is being reverted until and unless someone other than Serg reports an actual real-world system on which loadtools operation times are slowed compared to the Mother's Slackware reference and on which Slackware-like performance can be restored by setting the ASYNC_LOW_LATENCY flag.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 01:09:48 +0000
parents e7502631a0f9
children
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1 /*
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2 * The do_r16() and do_w16() functions implemented in this module
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3 * provide programmatic access to the r16 and w16 commands on the target.
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4 * They will be used to implement some flash operations.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <stdio.h>
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9 #include <stdint.h>
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10 #include <string.h>
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11 #include <strings.h>
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12 #include <stdlib.h>
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13
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14 extern char target_response_line[];
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15
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16 do_r16(addr, retptr)
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17 uint32_t addr;
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18 uint16_t *retptr;
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19 {
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20 char addr_arg[10], *argv[3];
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21 int stat;
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22 char *strtoul_endp;
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23
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24 sprintf(addr_arg, "%lx", (u_long) addr);
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25 argv[0] = "r16";
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26 argv[1] = addr_arg;
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27 argv[2] = 0;
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28 tpinterf_make_cmd(argv);
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29 if (tpinterf_send_cmd() < 0)
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30 return(-1);
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31 stat = tpinterf_capture_output_oneline(1);
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32 if (stat != 1) {
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33 errout: fprintf(stderr, "error: malformed response to r16 command\n");
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34 return(-1);
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35 }
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36 if (strlen(target_response_line) != 4)
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37 goto errout;
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38 *retptr = strtoul(target_response_line, &strtoul_endp, 16);
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39 if (strtoul_endp != target_response_line + 4)
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40 goto errout;
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41 return(0);
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42 }
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43
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44 do_w16(addr, data)
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45 uint32_t addr;
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46 uint16_t data;
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47 {
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48 char addr_arg[10], data_arg[10], *argv[4];
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49
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50 sprintf(addr_arg, "%lx", (u_long) addr);
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51 sprintf(data_arg, "%lx", (u_long) data);
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52 argv[0] = "w16";
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53 argv[1] = addr_arg;
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54 argv[2] = data_arg;
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55 argv[3] = 0;
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56 tpinterf_make_cmd(argv);
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57 if (tpinterf_send_cmd() < 0)
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58 return(-1);
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59 return tpinterf_pass_output(1);
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60 }