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can-calc-bit-timing: add option to specify explicit data bit timing

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This commit is contained in:
Marc Kleine-Budde
2022-01-19 07:21:38 +01:00
parent 36d76ba07a
commit 046d9f88ee
1 changed files with 17 additions and 3 deletions
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can-calc-bit-timing.c
+17 -3
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@@ -140,6 +140,7 @@ struct calc_data {
const struct calc_ref_clk *opt_ref_clk; const struct calc_ref_clk *opt_ref_clk;
const unsigned int *opt_bitrates; const unsigned int *opt_bitrates;
const unsigned int *opt_data_bitrates;
const struct can_bittiming *opt_bt; const struct can_bittiming *opt_bt;
bool quiet; bool quiet;
@@ -168,7 +169,8 @@ static void print_usage(char *cmd)
"Options:\n" "Options:\n"
"\t-q don't print header line\n" "\t-q don't print header line\n"
"\t-l list all support CAN controller names\n" "\t-l list all support CAN controller names\n"
"\t-b <bitrate> bit-rate in bits/sec\n" "\t-b <bitrate> arbitration bit-rate in bits/sec\n"
"\t-d <bitrate> data bit-rate in bits/sec\n"
"\t-s <samp_pt> sample-point in one-tenth of a percent\n" "\t-s <samp_pt> sample-point in one-tenth of a percent\n"
"\t or 0 for CIA recommended sample points\n" "\t or 0 for CIA recommended sample points\n"
"\t-c <clock> real CAN system clock in Hz\n" "\t-c <clock> real CAN system clock in Hz\n"
@@ -956,7 +958,9 @@ static void do_calc(struct calc_data *data)
else else
data->ref_clks = btc->ref_clk; data->ref_clks = btc->ref_clk;
if (data->opt_bitrates) if (data->opt_data_bitrates)
data->bitrates = data->opt_data_bitrates;
else if (data->opt_bitrates)
data->bitrates = data->opt_bitrates; data->bitrates = data->opt_bitrates;
else else
data->bitrates = common_data_bitrates; data->bitrates = common_data_bitrates;
@@ -983,6 +987,10 @@ int main(int argc, char *argv[])
0, 0,
0 /* sentinel */ 0 /* sentinel */
}; };
unsigned int opt_data_bitrate[] = {
0,
0 /* sentinel */
};
struct calc_data data[1] = { }; struct calc_data data[1] = { };
bool list = false; bool list = false;
int opt; int opt;
@@ -999,7 +1007,7 @@ int main(int argc, char *argv[])
{ 0, 0, 0, 0 }, { 0, 0, 0, 0 },
}; };
while ((opt = getopt_long(argc, argv, "b:c:lqs:?", long_options, NULL)) != -1) { while ((opt = getopt_long(argc, argv, "b:c:d:lqs:?", long_options, NULL)) != -1) {
switch (opt) { switch (opt) {
case 'b': case 'b':
opt_bitrate[0] = strtoul(optarg, NULL, 10); opt_bitrate[0] = strtoul(optarg, NULL, 10);
@@ -1009,6 +1017,10 @@ int main(int argc, char *argv[])
opt_ref_clk->clk = strtoul(optarg, NULL, 10); opt_ref_clk->clk = strtoul(optarg, NULL, 10);
break; break;
case 'd':
opt_data_bitrate[0] = strtoul(optarg, NULL, 10);
break;
case 'l': case 'l':
list = true; list = true;
break; break;
@@ -1090,6 +1102,8 @@ int main(int argc, char *argv[])
data->opt_ref_clk = opt_ref_clk; data->opt_ref_clk = opt_ref_clk;
if (opt_bitrate[0]) if (opt_bitrate[0])
data->opt_bitrates = opt_bitrate; data->opt_bitrates = opt_bitrate;
if (opt_data_bitrate[0])
data->opt_data_bitrates = opt_data_bitrate;
if (opt_bt->prop_seg) if (opt_bt->prop_seg)
data->opt_bt = opt_bt; data->opt_bt = opt_bt;