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can-calc-bittiming: add c_can 

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
pull/302/head
Kurt Van Dijck 2021-06-24 05:19:15 +02:00
parent e19b5abb5c
commit e9a298ec21
1 changed files with 34 additions and 0 deletions
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34
can-calc-bit-timing.c
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@ -289,6 +289,24 @@ static void printf_btr_bxcan(struct can_bittiming *bt, bool hdr)
}
}
static void printf_btr_c_can(struct can_bittiming *bt, bool hdr)
{
if (hdr) {
printf("%s", " BTR BRPEXT");
} else {
uint32_t btr;
uint32_t brpext;
btr = (((bt->brp -1) & 0x3f) << 0) |
(((bt->sjw -1) & 0x3) << 6) |
(((bt->prop_seg + bt->phase_seg1 -1) & 0xf) << 8) |
(((bt->phase_seg2 -1) & 0x7) << 12);
brpext = ((bt->brp -1) >> 6) & 0xf;
printf("0x%04x 0x%04x", btr, brpext);
}
}
static struct calc_bittiming_const can_calc_consts[] = {
{
.bittiming_const = {
@ -449,6 +467,22 @@ static struct calc_bittiming_const can_calc_consts[] = {
{ .clk = 48000000, },
},
.printf_btr = printf_btr_bxcan,
}, {
.bittiming_const = {
.name = "c_can",
.tseg1_min = 2,
.tseg1_max = 16,
.tseg2_min = 1,
.tseg2_max = 8,
.sjw_max = 4,
.brp_min = 1,
.brp_max = 1024,
.brp_inc = 1,
},
.ref_clk = {
{ .clk = 24000000, },
},
.printf_btr = printf_btr_c_can,
},
};